Use and composition for treating dementia.
Abstract
There is described a method for increasing the maximal tolerated dose and thus the efficacy of an acetyl choline esterase inhibitor (AChEI) in a patient suffering from an Alzheimer type dementia by decreasing concomitant adverse effects by administration of said AChEI in combination with a non-selective, peripheral anticholinergic agent, whereby an enhanced acetyl choline esterase inhibition in the CNS of said patient is achieved and alleviation of the symptoms of Alzheimer type dementia in said patient is thereby improved to a greater extent. The use of a non-selective, peripheral anticholinergic agent (nsPAChA) for the preparation of a pharmaceutical composition for increasing the maximal tolerated dose and thus the efficacy of an acetyl choline esterase inhibitor (AChEI) in a patient suffering from an Alzheimer type dementia and pharmaceutical compositions comprising a non-selective peripheral anticholinergic agent of formula II as illustrated in the description and an acetylcholine esterase inhibitor are also described.

Term
2.5 yearsleft in the term
Expires 17 March 2029.
- Priority
- Filed
- Granted
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10 claims: 5 independent, 5 dependent
- 1CLAIMS REIVINDICACIONES 1. A pharmaceutical unit form, characterized in that it comprises:1. Una forma unitaria farmacéutica, caracterizada porque comprende: (a) an nsPAChA selected from the group consisting of • quaternary ammonium nsPAChAs or sulfonium nsPAChAs represented by formula (II) R1 (a) un nsPAChA seleccionado del grupo que consiste de • nsPAChAs de amonio cuaternario o nsPAChAs de sulfonio representados por la fórmula (II) R1 R2--C— (COO) -— (X) —R (II) R2--C—(COO)-—(X)—R (II) R3 en donde - R es un radical seleccionado del grupo que consiste de aquellos de las fórmulas (a)-(e) R3 where - R is a radical selected from the group consisting of those of formulas (a) - (e) (a) Φ) (c) (d) (e) (a) Φ) (c) (d) (e) A es metilo y A' es un grupo alquilo de 1 a 4 átomos de carbono o 2-fluoroetilo o A y A' forman una cadena de 1,4butileno o 1,5-pentileno, L es hidrógeno o metoxi, Alq y Alq' son cada uno alquilo de 1 a 4 átomos de carbono e Y es un radical bivalente seleccionado del grupo que consiste de 1,2-etileno, 1,3-propileno, 1,4-butileno y 2-oxa-l,3propileno;el contraión correspondiente es un anión farmacéuticamente aceptable, - n y m son, independientemente, cero o 1, - X es un grupo alquileno de A is methyl and A 'is an alkyl group of 1 to 4 carbon atoms or 2-fluoroethyl or A and A' form a 1,4-butylene or 1,5-pentylene chain, L is hydrogen or methoxy, Alk and Alk ' they are each alkyl of 1 to 4 carbon atoms and Y is a bivalent radical selected from the group consisting of 1,2-ethylene, 1,3-propylene, 1,4-butylene and 2-oxa-1,3-propylene;the corresponding counterion is a pharmaceutically acceptable anion, - n and m are independently zero or 1, - X is an alkylene group of
- 22 to 3 carbon atoms, 2 a 3 átomos de carbono, Ri and R2 they are each phenyl, Ri y R2 son cada uno fenilo, IMPI IMPI INSTITUTO MEXICANO DE LA PROMBDAL »INDUSTRIAL cyclopentyl, cyclohexyl, 1-cyclohexenyl, 2-thienyl and, when R is a radical (a), they also each represent alkyl of 1 to 4 carbon atoms, - R3 is H or OH or, only when R is a radical (a), also a group COOAlq, Alq is an alkyl group of 1 to 4 carbon atoms, • solifenacin and its pharmaceutically acceptable salts, • propiverine and its pharmaceutically acceptable salts, • oxyphencyclimine and its pharmaceutically acceptable salts, and • tolterodine and its pharmaceutically acceptable salts;and (b) a selected AChEI. from the group consisting of donepezil, pharmaceutically acceptable salts of donepezil, rivastigmine, pharmaceutically acceptable salts of rivastigmine, galantamine and pharmaceutically acceptable salts of galantamine, at a dose level of 1.5 times to 4 times higher than the maximum tolerated dose of said AChEI ;in a mixture with at least one pharmaceutically acceptable carrier. INSTITUTO MEXICANO DE LA PROMBDAL» INDUSTRIAL ciclopentilo, ciclohexilo, 1-ciclohexenilo, 2-tienilo y, cuando R es un radical (a) , también representan cada uno alquilo de 1 a 4 átomos de carbono, - R3 es H u OH o, únicamente cuando R es un radical (a) , también un grupo COOAlq, Alq es un grupo alquilo de 1 a 4 átomos de carbono, • solifenacina y sus sales farmacéuticamente aceptables, • propiverina y sus sales farmacéuticamente aceptables, • oxifenciclimina y sus sales farmacéuticamente aceptables, y • tolterodina y sus sales farmacéuticamente aceptables;y (b) un AChEI seleccionado . del grupo que consiste de donepezilo, sales farmacéuticamente aceptables de donepezilo, rivastigmina, sales farmacéuticamente aceptables de rivastigmina, galantamina y sales farmacéuticamente aceptables de galantamina, a un nivel de dosis de 1.5 veces a 4 veces más alta que la dosis máxima tolerada de dicho AChEI;en una mezcla con por lo menos un portador farmacéuticamente aceptable. 2. The unit form according to claim 1, characterized in that the component (a) of nsPAChA is selected from the group consisting of solifenacin and pharmaceutically acceptable salts thereof, propiverine and pharmaceutically acceptable salts thereof, oxyphencyclimine and pharmaceutically acceptable salts of it, tolterodine and pharmaceutically acceptable salts thereof, and pharmaceutically acceptable quaternary salts of homatropin, trospium, anisotropin, clidinium, benzylonium and 5-glycopyrronium. 2. La forma unitaria de conformidad con la reivindicación 1, caracterizada porque el componente (a) de nsPAChA se selecciona del grupo que consiste de solifenacina y sales farmacéuticamente aceptables de la misma, propiverina y sales farmacéuticamente aceptables de la misma, oxifenciclimina y sales farmacéuticamente aceptables de la misma, tolterodina y sales farmacéuticamente aceptables de la misma, y sales cuaternarias farmacéuticamente aceptables de homatropina, trospio, anisotropina, clidinio, bencilonio y 5 glicopirronio.
- 5The unit form in accordance with the 5. La forma unitaria de conformidad con la 20 reivindicación 1, caracterizada porque el componente (b) de AChEI se selecciona del grupo que consiste de clorhidrato de donepezilo y rivastigmina como hidrógeno-(2R,3R)tartrato. twenty Claim 1, characterized in that AChEI component (b) is selected from the group consisting of donepezil hydrochloride and rivastigmine as hydrogen- (2R, 3R) tartrate.
- 6The unit form in accordance with the 6. La forma unitaria de conformidad con la 25 claim 1, characterized in that component (a) of 71 25 reivindicación 1, caracterizada porque el componente (a) de 71 INSTITUTO MEXICANO MEXICAN INSTITUTE DE LA MONEDAD -W* OF THE CURRENCY -W * INDUSTRIAL nsPAChA es cloruro de trospio en una cantidad de 2 0 mg, y dicho componente (b) de AChEI es clorhidrato de donepezilo en una cantidad de 15 mg, o rivastigmina como tartrato de hidrógeno en una cantidad de 9 mg (en base de rivastigmina). INDUSTRIAL nsPAChA is trospium chloride in an amount of 20 mg, and said component (b) of AChEI is donepezil hydrochloride in an amount of 15 mg, or rivastigmine as hydrogen tartrate in an amount of 9 mg (based on rivastigmine ).
- 9A pharmaceutical unit form, characterized in that it comprises a non-selective, peripheral anticholinergic agent (nsPAChA) in combination with donepezil or a pharmaceutically acceptable salt thereof in an amount of 15 mg to 60 mg. 9. Una forma unitaria farmacéutica, caracterizada porque comprende un agente anticolinérgico, periférico, no selectivo (nsPAChA) en combinación con donepezilo o una sal farmacéuticamente aceptable del mismo en una cantidad de 15 mg a 60 mg.
Independent claims5
419 paragraphs in 95 sections, as filed
(54) Title: USE AND COMPOSITION TO TREAT DEMENTIA.
(54) Title: USE AND COMPOSITION FOR TREATING DEMENTIA.
(57) Summary
A method is described to increase the maximum tolerated dose and thus the efficacy of an acetylcholine esterase (AChEl) inhibitor in a patient suffering from dementia of the Alzheimer's type by reducing concomitant adverse effects by means of the administration of AChEl in combination. with an anticholinergic, peripheral, non-selective agent, whereby an improved inhibition of acetylcholine esterase is achieved in the CNS of the patient and the relief of the symptoms of Alzheimer's type dementia in the patient is thereby improved to a greater degree. The use of a non-selective, peripheral anticholinergic agent (nsPAChA) for the preparation of a pharmaceutical composition to increase the maximum tolerated dose and thus the efficacy of an acetylcholine esterase (AChEl) inhibitor in a patient suffering from dementia of the Alzheimer's type and pharmaceutical compositions comprising a peripheral anticholinergic agent, non-selective of formula II as illustrated in the description and an acetylcholine esterase inhibitor.
(57) Abstract
There is described a method for increasing the maximal tolerated dose and thus the efficacy of an acetyl choline esterase inhibitor (AChEl) in a patient suffering from an Alzheimer type dementia by decreasing concomitant adverse effects by administration of said AChEl in combination with a non-selective , peripheral anticholinergic agent, whereby an enhanced acetyl choline esterase inhibition in the CNS of said patient is achieved and alleviation of the symptoms of Alzheimer type dementia in said patient is thereby improved to a greater extent. The use of a non-selective, peripheral anticholinergic agent (nsPAChA) for the preparation of a pharmaceutical composition for increasing the maximal tolerated dose and thus the efficacy of an acetyl choline esterase inhibitor (AChEl) in a patient suffering from an Alzheimer type dementia and pharmaceutical compositions comprising a non-selective peripheral anticholinergic agent of formula II as illustrated in the description and an acetylcholine esterase inhibitor are also described.
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PATENT TITLE No. 347901
Holders): CHASE PHARMACEUTICALS CORPORATION
Address: 1825 K Street NW, Suite 520, Washington, District of Columbia, 20006-1236, USA
Name: USE AND COMPOSITION TO TREAT DEMENTIA
<td>Classification:</td><td>CIP:</td><td>A61K31 / 27; A61K31 / 46; A61K31 / 55;</td><td>A61K31 / 325;</td><td>A61K31 / 445;</td>
<td></td><td></td><td colspan="2">A61K31 / 473; A61K31 / 4747; A61K45 / 06; A61P25 / 28</td><td></td>
<td></td><td>CPC:</td><td>A61K31 / 27; Α6ΊΚ31 / 46; A61K31 / 55;</td><td>A61K31 / 325;</td><td>A61K31 / 445;</td>
<td></td><td></td><td>A61K31 / 473; A61K31 / 4747; A61K45 / 06</td><td></td><td></td>
<td></td><td>CSetl:</td><td>A61K31 / 27; A61K2300 / 00 *</td><td></td><td></td>
Inventor (s):
THOMAS N. CHASE; KATHLEHN ^. CLARENCB-SMITH. REQUEST
Number :, MX / a / 2014/004035 International on:
. March 7, 2009
IW the Ifúm ^ ró ^
PRIORITY
Country;
EP! '-<sup>x</sup>- Date: <sub>;</sub> March 2008
Number:
08005750.8
Validity: Twenty years,
Expiration Date: March 17, 2029.
Issue Date: May 18, 2017 '' / ». '' '··>' - · x
The reference patent is granted based on articles 1 », 2nd section V, 6th section III, and 59 of the Industrial Property Law.
In accordance with article 23 of the Industrial Property Law, this patent has a validity of twenty years, non-extendable, counted from the date of presentation of the application and will be subject to the payment of the fee to keep it in force. 'rights' '' XsJ 4S & ··<sup>3</sup>'
Whoever signs this title does so confused <3 am®ito in »what was provided by articles 6<sup>or</sup> fractions TIL and 7<sup>or</sup> bis 2 of the Industrial Property Law (Official Gazette of the Federation (DOF) 06/27/1991, amended on 08/02/1994, 10/25/1996, -26/12/1999, 05/17/1999 , 01/26/2004, 06/16/2005, 01/25/2006, 05/06/2009, 06/01/2010, 06/18/2010, 06/28/2010, 01/27/20 «and 09/0/1/2012): articles 1 «, 3» section V clause a), 4 'and 12 «sections I and III of the Regulations of the Mexican Institute of Industrial Property (0.0 F 12/14/1999. 07/01/2002, 07/15/2004, 07/28/2004 and 09/07/2007); Articles 1, 3, 4<sup>or</sup>. 5th fraction V part a). 16 sections I and III and 30 of the Organic Statute of the Mexican Institute of Industrial Property (DOF 12/27/1999, amended on 10/10/2002, 07/29/2004, 08/04/2004 and 09/13/2007 ); 1st, 3rd and 5<sup>or</sup> Subsection a) of the Agreement that delegates powers to the Deputy General Directors. Coordinator, Divisional Directors, Heads of Regional Offices, Divisional Deputy Directors, Departmental Coordinators and other subordinates of the Mexican Institute of Industrial Property. (DOF 12/15/1999, amended on 02/04/2000, 07/29/2004, 08/04/2004 and 09/13/2007).
This document is signed with an advanced electronic signature (FIEL), based on articles 7 BIS 2 of the Industrial Property Law; 3 of its Regulations, and 1 section III, 2 section V, 26 BIS and 26 TER of the Agreement establishing the guidelines for the use of the Payment and Electronic Services Portal (PASE) of the Mexican Institute of Industrial Property, in the procedures indicated
THE DIVISIONAL DIRECTOR OF PATENTS
NAHANNY CANAL REYES
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Π7ΟΙ
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ΙΜΓΤΠνΤΟ MÜUCANÜ m la nomwAD INDUSTRIAL USE AND COMPOSITION TO TREAT DEMENTIA
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FIELD OF THE INVENTION
This invention relates to a method for improving the maximum efficacy and maximum tolerated dose of an acetylcholine esterase inhibitor in a patient suffering from Alzheimer's dementia by combining the acetylcholine esterase inhibitor with a non-selective, peripheral anticholinergic agent. or the use of an anticholinergic agent, peripheral, non-selective (nsPAChA) for the preparation of pharmaceutical compositions for the treatment of dementias of the Alzheimer's type in combination with an acetylcholine esterase inhibitor (AChEI). The invention also relates to pharmaceutical compositions comprising a non-selective, peripheral anticholinergic agent consisting of a quaternary ammonium compound or a sulfonium compound or of a non-quaternary ammonium compound selected from the group consisting of solifenacin, propiverine, oxyphencyclimine and tolterodine in association with an acetylcholine esterase inhibitor to increase and prolong the efficacy and decrease the toxicity of conventional cholinomimetic treatments such as treatments for dementias in Alzheimer's diseases.
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IMPI
MEXICAN INSTITUTE OF INDUSTRIAL CURRENCY
DEFINITIONS
AChEI (s): Acetylcholine Esterase Inhibitor (s).
NsPAChA (s): Anticholinergic agent (s), peripheral (s), non-selective (s).
Non-selective: referred to nsPAChAs, it has application to anticholinergic agents that exhibit broad inhibitory activity through the various muscarinic M-receptor subtypes, specifically M1-M5 receptors, as currently identified.
Peripheral: referred to nsPAChAs, it has application to anticholinergic agents that are largely incapable (have limited ability) to enter the central nervous system after systemic administration and thus do not affect brain function to a clinically appreciable degree. These drugs can include both quaternary and tertiary ammonium anticholinergic agents, especially those that have low lipid solubility.
CNS: Central Nervous System.
CSF: Cerebrospinal Fluid.
PNS: Peripheral Nervous System.
IR: Immediate Release of the active ingredient from a composition.
ER: Extended Release of the active ingredient of a composition.
IMPI INSTITUTO MEXICANO MLAHIOfUDAD INBUSTUAL
BACKGROUND OF THE INVENTION
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Dementias of the Alzheimer's type include, but are not limited to, Alzheimer's disease, Parkinson's disease dementia, and related conditions in humans involving cognitive and behavioral dysfunction such as Lewy body dementia. Most are chronic, neurodegenerative disorders of the human central nervous system (CNS) characterized by progressive cognitive decline, a variety of neurobehavioral and / or neuropsychiatric disturbances, and restrictions in activities of daily living.
Alzheimer's disease is the most common form of dementia. Prevalence studies indicated that in 2000 there were approximately 25 million people with Alzheimer's disease worldwide and this number is expected to increase to 114 million by 2050 unless effective preventive or neuroprotective therapy emerges. Onset usually occurs in those over 65 years of age. Clinical signs include progressive cognitive loss and other associated neurobehavioral disabilities along with a declining ability to perform activities of daily living.
The underlying cause of sporadic Alzheimer's disease is not known, probably because the disease is heterogeneous and involves related changes.
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INSTITUTO MEXICANO M LA MtOFIEDAD INDUSTRIAL with age together with a complex interaction of genetic and environmental risk factors. Current hypotheses advanced to explain the pathophysiology of the Alzheimer's disease center on the putative deleterious effects of the two misfolded and aggregated proteins, extracellular beta-amyloid and intracellular tau. Presumably, as a consequence of the selective neurodegenerative process, the synthesis of the neurotransmitter acetylcholine decreases. This reduction undoubtedly interferes with normal synaptic transmission in the brain. Drugs that act to correct acetylcholine deficiency thus constitute the mainstay of current therapy.
Dementias of the Alzheimer's type also include cognitive impairments that are associated with Parkinson's disease. An example is Parkinson's disease dementia, also a chronic, progressive, degenerative CNS disorder with a relatively late onset in life. Parkinson's disease itself primarily affects motor function. But secondary symptoms include cognitive impairment, especially deficits in executive function.
Another dementia of the Alzheimer's type that is commonly linked to Parkinson's disease is known as Lewy body dementia or dementia due to
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INSTITUTO MEXICANO BE LA FFOFIEBAD INPUSTUAL Lewy bodies. Although Lewy body dementia is now generally considered a separate disease, differentiating Alzheimer's disease and dementia from Parkinson's disease can be clinically challenging. In this way, Lewy body dementia tends to be misdiagnosed or misdiagnosed as Alzheimer's disease or Parkinson's disease dementia. The clinical presentation of Lewy body dementia is typically one of cortical and subcortical cognitive impairment, with more pronounced visuospatial and executive dysfunction than in Alzheimer's disease. The fundamental clinical features of Lewy body dementia, in addition to parkinsonism, are cognitive decline plus fluctuations in attention and recurrent visual hallucinations.
Both Parkinson's disease dementia and Lewy body dementia are neuropathologically characterized by the presence of cortical Lewy body pathology and synuclein protein deposition. Genetic factors appear to play a role in pathogenesis. As expected, the pathology of Parkinson's disease dementia and Lewy body dementia is heterogeneous and overlapping, frequently intermingled with changes in types
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MEXICAN INSTITUTE
M THE INBUSTMAL PROPERTY
Alzheimer's and vascular. A reduction in acetylcholine-mediated neurotransmission in the brain has been linked to the primary clinical abnormalities found in these disorders, and drugs that act to stimulate cholinergic transmission now constitute the primary approach to therapy.
In addition to the disorders mentioned above, off-label administration of drug that increases CNS cholinergic transmission for various other cognitive disorders is widespread. Some of this use involves cognitive disorders for which there is currently relatively little clear evidence of cholinergic dysfunction. However, a growing number of clinical studies now support a rational extension of AChEI treatment for several additional disorders of cognitive function, including but not limited to, vascular dementia, Down syndrome, traumatic brain injury, and mild cognitive impairment.
As mentioned above, reduced levels of neurotransmitters including acetylcholine have been reported in dementias of the Alzheimer's type and related disorders. In particular, a deficit in acetylcholine-mediated transmission is thought to contribute to cognitive abnormalities and certain of the
INSTITUTO MEXICANO J
OF THE PROPERTY
INDUSTRIAL neurobehavioral abnormalities associated with these disorders. Therefore, drugs known to increase cholinergic transmission in the CNS are widely used in therapy.
AChEIs are now part of the standard of care for patients suffering from dementia of the Alzheimer's type and are widely used off-label for various other progressive, chronic disorders of cognitive function. AChEIs have acetylcholine-mediated neurotransmission enhancement as a general mechanism of action. All act on the human CNS to increase and prolong the availability of acetylcholine by inhibiting its degrading enzyme acetylcholine esterase. Four AChEIs have been approved by the US FDA for the treatment of Alzheimer's disease and for the dementia of Parkinson's disease: tacrine, donepezil [Aricept<sup>MR</sup>], rivastigmine [Exelon<sup>MR</sup>] and galantamine [Razadyne<sup>MR</sup>]. AChEIs are available in various formulations including immediate release forms such as tablets, capsules, and solutions as well as rapid dissolution and extended release forms for oral administration as well as those for parenteral (eg, transdermal) administration.
For example, tacrine comes in capsules containing 10, 20, 30, 40 mg / capsule and was used in <sup>8 </sup>INSTITUTO MEXICANO Ot THE INDUSTRIAL PROPERTY recommended daily dosages of 40 to 160 mg (divided into 4 doses); donepezil comes, as hydrochloride, in orally disintegrating tablets containing 5, 10 mg / tablet and is used in recommended daily dosages of 5 to 10 mg; Rivastigmine is available as capsules containing the tartrate in amounts corresponding to 1.5, 3, 4.5 and 6 mg of rivastigmine base, as an oral solution containing the tartrate corresponding to 2 mg of rivastigmine base and in the form of a patch transdermal release that releases rivastigmine at 4.6 mg / 24 hours or 9.5 mg / 24 hours, the recommended daily dosage for IR forms is 6 to 12 mg, divided into 2 doses and the maximum recommended patch dose is 9.5 mg / 24 hours; and galantamine is available in 8 mg, 16 mg and 24 mg ER capsules containing 5,126, 10,253 and 15,379 mg of galantamine bromohydride, respectively, corresponding to 4 mg, 8 mg and 12 mg, respectively, of the base of galantamine and as an oral solution of 4 mg / mL, the recommended daily dosage is from 16 mg to 32 mg, in the United States of America the maximum recommended daily dose has been reduced to 24 mg divided into 2 doses.
A brief review of the efficacy of the AChEIs rivastigmine, donepezil, and galantamine for the treatment of dementia diseases, by Angelescu. Et al.,
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MEXICAN INSTITUTE
OF THE INDUSTRIAL nontPAD has been published in MMW-Fortschr.
Med. Sonderheit, 2007,
149, 76-78 (Angelescu 2007).
Other AChEIs, in particular tacrine analogs, such as ipidacrine; phenserin and its analogues; icopezil; and carrpezil are under evaluation.
AChEIs vary in their pharmacological profiles and in their affinities for acetylcholine esterase and butyrylcholinesterase. Donepezil and galantamine are 1000 and 50 times, respectively, more selective for acetylcholine esterase than for butyrylcholinesterase, while rivastigmine inhibits both enzymes with similar affinity (Thomsen et al., Life Scie. 1990, 46, 1553-58) and certain phenserin analogs are more selective for butyrylcholinesterase (see for example Qian-sheng Yu et al. J Med Chem, 1997, 40 (18), 2895-2898 and US 6,683,105).
The increase in cholinergic transmission in the CNS by means of currently available AChEIs confers a therapeutic benefit to patients with dementias of the Alzheimer type. Therapeutic efficacy can be measured by the degree of improvement in cognitive dysfunction and other neurobehavioral abnormalities associated with these disorders using standardized scales.
Unfortunately, however, none of the currently available medications offer more than one
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INSTITUTO MEXICANO DE LA F »OW AGE industrial modest clinical benefit for some patients suffering from any of the aforementioned dementia disorders, even when these medications are administered at their maximum safe and tolerated doses. This is the first problem limiting the success of current AChEI therapy of dementias of the Alzheimer type.
Carefully conducted clinical trials of donepezil (Rogers et al., Neurology 1998, 50, 136-45; Winblad et al., Neurology. 2001 Aug 14, -57 (3): 489-95), rivastigimine (Rosier et al., Brit. Med. J. 1999, 318, 633-38; Farlow et al., Eur. Neurol., 2000, 44, 236-41) and galantamine (Raskind et al., Neurology, 2000, 54, 2261-68; Tariot et al., Neurology, 2000, 54, 2269-76) in patients with dementias of the Alzheimer's type demonstrated small, but statistically significant, benefits on global and cognitive measures relevant to dementia. The magnitude of effect on the pivotal clinical tests was on the order of a 2.8-point improvement on the 70-point cognitive subscale of the Alzheimer's Disease Rating Scale (ADASCog), or a 1-1.5-point improvement on the 3 0 Point Mini-Mental State Exam (MMSE) compared to placebo over six months. Differences in global measurements assessed by Based Printing
IMPI
MEXICAN INSTITUTE
Clinical Interviews on the 7-point Scale of Change (CIBIC) were on the order of 0.3-0.5 points in patients who received an AChEI compared to those who received placebo. The efficacy was similar for the three commonly used AChEIs. AChEIs also appear to have a beneficial effect on neuropsychiatric behavior and symptoms in patients with dementias of the Alzheimer's type.
A second problem limiting the success of current AChEI therapy for Alzheimer's-type dementias is that, even in recommended amounts, all of these drugs produce dose-limiting adverse reactions, mainly due to overstimulation of muscarinic-type peripheral cholinergic receptors. . As a result, signs and symptoms of detrimental dysfunction occur in the gastrointestinal, pulmonary, cardiovascular, urinary, and other systems. These side effects commonly include, for the AChEIs mentioned above, tacrine, donepezil, rivastigmine, and galantamine: anorexia, nausea, vomiting, diarrhea, abdominal pain, weight loss; increased bronchial secretions, dyspnea, bronchoconstriction and bronchospasm; bradycardia, supraventricular cardiac conduction abnormalities, vasodilation, hypotension, dizziness, and syncope; urinary bladder spasm, urinary frequency
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IMPI Mexican iNSTmrro
OF INCREASED INDIRMUAL n «MEDAD and incontinence; flushing and diaphoresis; fatigue, headache, lacrimation, miosis and loss of binocular vision (Physicians Desk Reference 2008, Thomson PDR, Montvale,
NJ).
The most frequently reported adverse effects of rivastigmine, for example, are gastrointestinal, especially nausea. About half of patients who take this drug in the recommended oral, therapeutic dose range of 6-12 mg / day have nausea and about a third vomit at least once. Vomiting was severe in 2% of patients treated with rivastigmine and was mild or moderate in 14%. Five percent of patients discontinued rivastigmine due to vomiting, compared with less than 1% for placebo. A loss of appetite was reported by 17% of patients and weight decreased by 25% during rivastigmine therapy (averaging 3.18 to 4.54 kilograms (7 to 10 pounds)). Presumably, drug-induced anorexia, nausea, and vomiting contribute to the observed weight loss. These harmful gastrointestinal effects, as well as others that occur with AChEI treatment, make it difficult to increase the dosage of rivastigmine above 6 mg per day in most patients.
Adverse events related to the use of AChEIs
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MEXICAN INSTITUTE
INDUSTRIAL MLAPUOfUDAD
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they seem to reflect mainly the excessive stimulation of peripheral cholinergic receptors, especially those of the muscarinic type (mAChRs). Five muscarinic receptor subtypes, MI through M5, have now been identified.
Ongoing research has begun to map the distribution and physiological role of these receptors as well as to determine the binding affinity of drugs to them. For example, MI receptors are found on sympathetic postganglionic neurons (autonomic ganglia) in gastric tissue and in the myenteric plexus; they are involved in secretions of the salivary glands and the gastrointestinal tract. M2 receptors are present in cardiac and smooth muscle and have been implicated in the regulation of contractile forces of the atrial cardiac muscle and the conduction velocity of the atrioventricular node and thus the heart rate. M2 receptors are also present in gastrointestinal smooth muscle as well as detrusor smooth muscle cells and other structures within the bladder wall. M3 receptors are the predominant subtype of muscarinic receptors that mediate contraction of the fundus of the stomach, urinary bladder, and trachea. They are also expressed in glandular cells including gastric parietal cells and vascular smooth muscle as well as detrusor smooth muscle and<sup>14</sup>
INSTITUTO MEXICANO pe industrial property other structures within the wall of the bladder. M3 receptors are involved in exocrine gland secretion, smooth muscle contractility, emesis, pupil dilation, food absorption, and weight gain.
The characterization of muscarinic receptor subtypes remains incomplete, especially in relation to the more recently identified M4 and M5 receptors, and now appears much more complex than originally envisioned. The precise relationship between a particular muscarinic receptor subtype and a specific bodily function, or a particular symptom of overstimulation, is not yet fully understood. Similarly, many drugs remain incompletely characterized with respect to their muscarinic receptor binding profiles. However, the available evidence indicates that many of the adverse events that occur in association with the administration of recommended dose levels of any of the currently used AChEIs can be linked to stimulation of the currently recognized peripheral muscarinic receptor subtypes. Consequently, muscarinic antagonists that bind with the highest affinity to those muscarinic receptor subtypes that give rise to the most severe AChEI-induced adverse effects in
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INDUSTRIAL any particular human subject could be optimal for that individual. But as a practical matter, since acetylcholine interacts with all muscarinic receptor subtypes, subtype non-selective muscarinic antagonists are generally preferred as the best approach to clinical therapy.
Adverse events significantly reduce the safety and tolerability of AChEI therapy. Attempts to limit them in clinical practice now depend on starting treatment with a low dose and then increasing the dose slowly. However, in current clinical practice, AChEI dosing is guided primarily by side effects and not by therapeutic effects in contrast to most drugs in the treatment of neuropsychiatric disease. Administration of doses higher than the recommended doses tends to increase the frequency and severity of these side effects as well as introduce additional classes of adverse reactions. These include those generally found with high-dose administration of cholinomimetics. In view of the frequency and potential severity of these high-dose adverse effects, maximum recommended oral doses of AChEIs are infrequently intentionally exceeded in clinical practice.
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The degree to which AChEIs can attenuate the activity of this enzyme in the CNS can be estimated by assays of AChE activity and related protein levels in CSF. Recommended maximum dose levels of these drugs are reported to typically achieve only about 45% AChEI inhibition (without a concomitant increase in AChE protein levels) in the CNS of Alzheimer's disease patients (Brannan S et al. ACNP 4 6<sup>th</sup> Annual Meeting, Program No. 4. Boca Raton FL, December 10, 2007 - Brannan 2007; Farlow M et al. AAN Poster 2008; Davidsson P et al. Neurosci Lett 2001; 300: 157-60; Amici S et al. Mech Aging Dev 2001; 122: 2057-62) and that inhibition of AChEI activity and cognitive improvement are significantly correlated (Giacobini et al. J Neural Transm. July 2002; 109 (7-8): 1053-65, - Darreh-Shori T et al., J Neural Trans 2006; 113: 1791-801) and that ordinarily a higher degree of enzyme blocking can be achieved for maximum functional effect (Jann et al., Clin Pharmacokinet. 2002; 41 (10): 719-39 - Jann 2002).
On the other hand, doubling the dose of rivastigmine, which became clinically practical when the administration of AChEI by means of immediate-release tablets was replaced by skin patches,
<img file="MX347901B_D0015.tif" />
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INSTITUTO MEXICANO »E LA PROPERTY which decreased collateral effects by mitigating peak blood levels, significantly increased the amount of cognitive improvement in Alzheimer's disease patients without increasing collateral effects.
By virtue of being dose-limiting, these adverse effects also limit the efficacy of AChEI therapy. Studies in animal models of cognitive dysfunction in humans indicate a direct dose-response relationship between the amount of acetylcholine esterase inhibition and the degree of cognitive enhancement (Bennett bm et al., Neuropsychopharmacology. 2007 Mar; 32 (3): 505-13). Similar conclusions have been drawn regarding the effects of AChEI on cognitive and behavioral symptoms in human patients with Alzheimer's disease (Jann 2002; Winblad B, Cummings J, Andreasen N, Grossberg G, Onofrj M, Sadowsky C, Zechner S, Nagel J, Lañe R. Int J Geriatr Psychiatry. 2007 May; 22 (5): 456-67).
PREVIOUS TECHNIQUE
A benefit of relieving the side effects of an AChEI was described in a report of four patients in whom treatment of Alzheimer's disease with AChEI tacrine was complicated by
<img file="MX347901B_D0016.tif" />
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INDUSTRIAL gastrointestinal, cholinergic, peripheral side effects, especially cramps, nausea, vomiting and diarrhea (Faber et al. Am J Psychiatry 156: 1, 1999, page 156 - Faber 1999). These adverse events 5 were ameliorated through the complementary use of the anticholinergic drug propantheline (Pro-Banthine<sup>MR</sup>) at 7.5 to 15 mg taken four times a day. Based on these results, the authors recommended the complementary use of propantheline in patients with harmful gastrointestinal cholinergic effects of cholinesterase inhibitors.
However, the aforementioned application of the general concept for improving the treatment of dementias of the Alzheimer's type provides only limited benefit to patients suffering from these disorders. Propantheline has disadvantages that preclude general clinical utility in this application. This anticholinergic drug and others of its type, such as methanthelin bromide, do not improve in this way the updating of the therapeutic potential of this approach. There are four main problems with the anticholinergic drug selected for use by Faber et al: (1) the spectrum of effective muscarinic receptor blockade was limited to only those that alleviated the effects<sup>19</sup> IMPI ^^ iNsrmrromexicano
OF THE PROPERTY -Γν
INDUSTRIAL —μ *<sup>1</sup> gastrointestinal collaterals; (2) the duration of action of the anticholinergic drug was too short for current practical use in highly disobedient dementia patients; (3) the anticholinergic drug administered in maximum recommended doses may itself produce adverse effects which appear in addition to those of AChEl; and (4) this report does not disclose or suggest that, by reducing adverse events, it might be possible to increase the dose of AChEl and thus improve efficacy.
In particular, with respect to problem (1) above, to the extent that propanthelin targets gastrointestinal secretory and motility function and / or rather selectively blocks MI receptors in the gastrointestinal tract, it would lack efficacy in mitigating many of the side effects of cholinesterase inhibitor therapies, by virtue of its limited ability to inhibit the effects of AChEl-induced stimulation of other muscarinic receptor subtypes, especially those of the M2 and M3 subtypes, located at various sites outside the CNS.
Hyperstimulation of peripheral muscarinic receptors of the M2 subtype, as occurs during treatment with AChEl, contributes to frequently occurring cardiovascular side effects such as
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INSTITUÍ · MEXICANO DE LA PROPIEDAD INDUSTRIAL Bradycardia, hypotension, palpitations, atrial fibrillation and other supraventricular cardiac conduction conditions. Any of these conditions could contribute to the development of dizziness and syncope with AChEIs. Similarly, hyperstimulation of peripheral muscarinic receptors of the M3 subtype as occurs during treatment with AChEl may also contribute to frequently occurring side effects of AChEIs such as hypotension, dizziness and syncope (due to vasodilation) as well as dyspnea (due to pulmonary bronchoconstriction), anorexia, dyspepsia, weight loss and abdominal cramps (due to increased intestinal motility); urinary incontinence (due to dilation of the sphincter); and diaphoresis (due to hypersecretion of exocrine glands). As noted by the previously cited article by Faber 1999, who used the maximum recommended dose, the adverse effects of propantheline can commonly include rapid heartbeat, constipation, blurred vision, dry mouth, and urinary retention. Each of these raise safety and tolerability problems and impair the quality of life of elderly human beings who ordinarily manifest Alzheimer's-type dementia.
Unfortunately, in addition to the problem of some drugs of this type that have a duration of <sup>21</sup>
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K LA MOHEDA »QmmJUf
INDUSTRIAL ~~ short acting, drugs that act to block cholinergic transmission could generally mitigate cholinergic side effects, but at the same time would reduce the therapeutic benefit of AChEI therapy by virtue of its ability to block central cholinergic receptors. In fact, anticholinergic drugs that enter the CNS are generally contraindicated in patients with dementia of the Alzheimer's type in view of their potential to exacerbate cognitive dysfunction. In addition, they can cause, among various adverse effects observed especially in elderly patients, dry mouth, dilated pupils with visual disturbances and risk of acute angle closure glaucoma, reduced bronchial secretions with an increased risk of lung infection, gastric secretions decreased with impaired food absorption, reduced gastric motility with paralytic ileus, pseudo-obstruction and constipation, urinary retention, disorientation, agitation, hallucinations and delirium, cardiac conduction disturbances and supraventricular tachyarrhythmias, exacerbation of angina and congestive heart failure, and thermoregulatory deterioration.
United States Patent No. 5,837,724 discloses a method for enhancing cognition that comprises the administration of the anticholinergic drug darifenacin,
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chemically
2- [1- [2- (2,3-dihydrobenzofuran-5-yl) ethyl] pyrrolidin-3-yl] -2,2-diphenyl-acetamide and also discloses compositions comprising darifenacin and an AChEI, thereby which the use of an AChEI in combination therapy may be particularly beneficial and may have a synergistic effect. However, only a comparison of darifenacin with oxybutynin (without an AChEI) in urge incontinence patients is provided by this document. Furthermore, darifenacin is a selective M3 antimuscarinic agent (C. R Chapple et al. Expert Opin Investig Drugs. 2004 Nov; 13 (11): 1493-500), such that the alleviation of the cholinergic side effects of AChEIs it must be only partial by virtue of its limited ability to inhibit the gastrointestinal and cardiac effects of stimulation of receptors for MI and, respectively, M2 subtypes located outside the CNS.
Document WO 2004/069246 discloses pharmaceutical compositions comprising AChEIs and anticholinergic muscarinic receptor blocking agents which cannot cross the blood-brain barrier, the compositions are capable of reducing gastrointestinal side effects without reducing treatment in senile dementia, expanding in this way the use of AChEIs to treat senile dementia. This document
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ΙΝΓΓΠυΤΟ MEXICANO DC LA MWIEDAD INDUSTRIAL cites, as anticholinergic drugs, propantheline bromide, scopolamine methyl bromide, isopropamide iodide, valetamate, scopolamine methobromide and metonitrate, atropine metonitrate, diponium bromide, brompenzole bromide methopenzole bromide bromide benactizine and dibutoline sulfate, but all specifically described compositions are made with propantheline bromide as an anticholinergic agent, which, Due to its short duration of action, it is taken four times a day compared to the administration once or twice a day of the anticholinergic agents used in accordance with the present invention and necessary for disobedient elderly individuals suffering from dementias of the Alzheimer's type. In particular, the document cited does not disclose or suggest that certain anticholinergic drugs can improve the treatment of dementia of the Alzheimer's type, not only in terms of reducing side effects but also in terms of increasing the efficacy of symptoms of dementia.
Finally, in a series of documents AK Gunnar Aberg discloses the use of the anticholinergic drug trospium to treat urinary incontinence (US 2005/0043342, now US Patent
United States No. 6,974,820), smooth muscle disorders
<img file="MX347901B_D0020.tif" />
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INSTTTUTO M U1CANO Dt LA FROHEDAT industiual in patients suffering from cardiac contractility disorders (US 2007/0004766) and smooth muscle disorders in patients suffering from memory disorders (US 2006/0293356). According to the latter document, smooth muscle disorders in patients suffering from a memory disorder can be treated with trospium while drug-induced memory disorders or drug-induced worsening of existing memory disorders are avoided. Although this document states that AChEIs have opposite effects to those of common anticholinergic drugs, it does not mention or suggest the possibility of improving the symptoms of Alzheimer-type dementia by combining an AChEI and trospium.
After the publication of Faber in 1999, other studies concerning the safety and penetration capacity of the Blood Brain Barrier of anticholinergic agents have been published.
For example, in an overview of bladder dysfunction in subjects with dementia and Alzheimer's disease, Schultz-Lampel, Urologe (A), 2003, 42, 15791587, illustrates the rationale for diagnosis and the possibilities for therapy. Among other possible classes of drugs, the Author cites oxybutynin, propiverine, tolterodine and trospium chloride, the latter being capable
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to avoid complications in the CNS. An AChEI is not cited in this document.
In a prospective randomized study, Takeda et al, 33rd Annu. Meet. Int. Continence Soc, 2003, October 5-9, Abstract 166 (Takeda 2003), report the effects of the anticholinergic drugs propiverine hydrochloride and oxybutynin hydrochloride on cognitive functions, urinary symptoms, urinary functions and impact of the health professional in patients elderly with dementia with urinary incontinence. AChEIs are not cited in this study. The Authors conclude that propiverine hydrochloride and oxybutynin hydrochloride had beneficial effects on both cognitive function and urinary incontinence as well as on the burden and quality of life of healthcare professionals. An AChEI is not cited in this document.
Scheifer et al., Clinical Therapeutics, 2004, 27 (2), 144-153, describe the adverse effects on the CNS of anticholinergic drugs used for the treatment of overactive bladder in elderly patients. An AChEI is not cited in this document.
In an overview of anticholinergic drugs currently prescribed in patients with overactive bladder (Der Urologe, 2006, 7, 830-833), H.
Madersbacher paid particular attention to the influence of pharmacokinetics / pharmacodynamics on the profile of adverse events that include possible CNS side effects. In particular, according to this Author, tolterodine in combination with AChEIs has dramatically worsened the cognitive situation in geriatric patients by inducing delusional conditions which diminished after the suspension of treatment.
In a pharmacological study in mice using oral tolterodine, Cappon et al., Eur. J. Pharmacol. , 2008, 579, 225-228, observed that the tested drug had no effect on memory in the mouse passive avoidance model and concluded that tolterodine did not alter cognitive function under the conditions tested. An AChEI is not cited in this document.
Siegler et al., Clin Parmacol Ther 2004;
75, 484-488 (Siegler et al. 2004) studied the treatment of urinary incontinence with anticholinergic drugs in patients taking cholinesterase inhibitors for dementia. The Authors concluded that it may be appropriate to prescribe anticholinergic drugs and cholinesterase inhibitors together for patients with dementia who are concerned about the effects of detrusor muscle instability and that the combination is
<img file="MX347901B_D0022.tif" />
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INSTITUTO MEXICANO OF IA MONEDAD 'NDUmUAL an imperfect but often effective means of site-directed therapy in the absence of truly organ-specific medications.
In summary, the literature does not disclose or suggest what advantage can be taken from the mitigation of side effects discovered by Paber 1999, achieved with propantheline and confirmed through additional studies, to improve the magnitude and / or duration of the response. otherwise marginally therapeutic to an AChEl, by allowing AChEl doses to be increased and concurrently improving neurobehavioral function and quality of life. Until now, no attempt was made in this direction.
However, there was and continues to be an urgent need to improve the dosing regimen of an AChEl in order to allow considerable improvement in the symptoms of Alzheimer's-type dementias.
SUMMARY OF THE INVENTION
Considering the results of previously cited previously published studies in animal models of human cognitive function that indicate a dose-response relationship between the amount of AChEIs and the degree of cognitive improvement achieved in the clinically relevant dose range, It has been
<img file="MX347901B_D0023.tif" />
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K INDUSTRIAL PROPERTY assumed that if the dose-limiting side effects of AChEIs could be reduced or eliminated, then higher doses could provide a much-needed increase in the size of the therapeutic effect and prolong the duration of drug action , while at the same time not having a significant harmful effect on safety or tolerability.
The therapeutic approach according to the present invention reverses the approach taught by the prior art, in the sense that it provides an increase in the therapeutic effect of AChEI (i.e., an increase in efficacy) by concurrently globally counteracting its side effects. contrary to combating its collateral effects without appreciably decreasing the central activity of AChEIs, but without increasing its efficiency as taught by the prior art, in particular by WO 2004/069246.
In this way, it has been discovered that it is actually possible to maximize the effects of an AChEI in ameliorating the symptoms of dementia of the Alzheimer's type in a patient suffering from the symptoms by administering the patient AChEI in combination with an nsPAChA. as defined above, i.e. with an anticholinergic agent that is largely excluded, if
<img file="MX347901B_D0024.tif" />
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INSTITUTO MEXICANO DE LA MOHEDA »'NDUST1UA1 not completely, of the CNS, which will act with high affinity as a direct pharmacological antagonist at all muscarinic acetylcholine receptors, in doses that are not likely to introduce additional side effects.
It has also been surprisingly discovered that by means of a combination treatment with nsPAChA / AChEI, maximization of cholinomimetic efficacy is achieved with doses of AChEI higher than the currently tolerated maximum doses and with doses of nsPAChA equal to or even lower than those. currently used for anticholinergic therapy, without the onset of clinically significant peripheral cholinergic adverse effects.
In accordance with the present invention, pharmaceutical compositions comprising a pharmacologically active amount of an AChEI and a pharmacologically active amount of an nsPAChA, in a mixture with pharmaceutical carriers, ameliorate the symptoms of dementia of the Alzheimer type in patients suffering from the symptoms, even in the case of patients who have been withdrawn or are no longer responding to AChEI therapy due to serious side effects, ensuring in this way not only an improvement in the quality of life of patients, but also an objective improvement and previously not achieved in their symptoms.
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DETAILED DESCRIPTION OF THE INVENTION
The present invention proposes an improved method of increasing the efficacy of conventional cholinergic therapies for Alzheimer's-type dementias by mitigating the common adverse events of cholinomimetic agent treatments of Alzheimer's-type dementias that arise as a result of concomitant stimulation of cholinergic receptors in the PNS. Drugs that act to selectively inhibit the activation of all muscarinic receptors in the PNS, but not the CNS, resulting from therapy with cholinomimetic agents have the potential to reduce adverse effects, such that cholinomimetic doses can be administered. higher, leading to higher and longer antidementia efficacy with fewer peripherally mediated side effects. By combining an extended release cholinomimetic drug with a peripheral anticholinergic drug having an advantageous duration of pharmacological action, in a single dosage form, the patient benefits of an even longer duration of action are also achieved.
Thus, an objective of the present invention is to provide a method for increasing the maximum tolerated dose of an acetylcholine inhibitor. <sup>31 </sup>ι Nsrmrro μ exjcano Of LA n MMAD INDUSTRIAL esterase in a patient suffering from dementia of the Alzheimer's type without any appreciable concurrent adverse effects, which includes administering AChEI in combination with a non-selective, peripheral anticholinergic agent (nsPAChA) , whereby an improved inhibition of acetylcholine esterase is achieved in the patient's CNS and the symptoms of dementia of the Alzheimer's type are improved in the patient.
The invention also provides the use of a non-selective, peripheral anticholinergic agent (nsPAChA) for the preparation of pharmaceutical compositions for the treatment of dementias of the Alzheimer's type in combination with an AChEI, whereby the maximum tolerated dose of AChEI is increased, a higher degree of acetylcholine esterase inhibition is achieved in the CNS and the symptoms of Alzheimer's dementia are improved to a greater degree without noticeable adverse effects, concurrent.
The efficacy of nsPAChAs in improving the symptoms of Alzheimer's type dementia is due to the fact that nsPAChAs allow the increase in therapeutic doses of all AChEIs up to a factor of 4.
Advantageous AChEIs are those currently in use or being tested for this <sup>32</sup> IMPI
INSTITUTO MEXICANO de la pxomDAn INDUSTRIAL indication, such as 1,2,3,4-tetrahydro-9-acridinamine (tacrine), 9-amino-2,3,5,6,7,8-hexahydro-ΙΗ-cyclopenta [b ] quinoline (ipidacrine); (+) - 2,3-dihydro-5,6-dimethoxy-2 - [[1 (phenylmethyl) -4-piperidinyl] methyl] -IH-inden-1-one (donepezil) and its pharmaceutically acceptable salts, in particular hydrochloride, 3- [2- (l-benzyl-4-piperidyl) ethyl] -5,7, -dihydro6H-pyrrolo [3,2-f] -1,2-benzisoxazol-6-one (icopezil) and its pharmaceutically acceptable salts, in particular maleate, 3- [1-benzylpiperidin-4-yl] -1- (2,3,4,5-tetrahydrolH-l-benzazepin-8-yl) propan-l-one (carrpezil) and its pharmaceutically acceptable salts, in particular fumarate, (S) -N-Ethyl-N-methyl-3- [1- (dimethylamino) ethyl] -phenyl-carbamate (rivastigmine) and its pharmaceutically acceptable salts, in particular (2R, 3R) -hydrogen tartrate, 4aS, 6R, 8aS-3methoxy-ll-methyl-4a, 5,9,10,11,12-hexahydroxy-6H-benzofuro [3a, 3,2-e, f] benzazepin-6-ol (galantamine); (IR, 9S, 13E) -1-amino-13-ethylidene-ll-methyl-6-azatricyclo [7.3.1. OR<sup>2,7</sup>] trideca2 (7), 3,10-trien-5-one (huperzine A) and phenserine and their analogues included by the general formula I
<img file="MX347901B_D0025.tif" />
E where Q is a phenyl group optionally substituted by alkyl of 1 to 4 carbon atoms or by a methoxy group, Z
<img file="MX347901B_D0026.tif" />
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INSTITUTO MEXICANO PE LA non AGE INDUSTRIAL is an oxygen or sulfur atom or a radical N-E ', E and E', independently, are hydrogen or a methyl group optionally substituted by a phenyl or benzyl group.
Exemplary AChEIs of formula (I), described in U.S. Patent No.
6,683,105, are phenserine (Q = phenyl; E = CH<sub>3</sub>; Z = N-CH<sub>3</sub>); (-) - N<sup>1</sup>, N<sup>8</sup>-bisnorfenserin (Q = phenyl; E = Η; Z = NH); 4'-methoxyphenserine (Q = 4'-methoxyphenyl; E = CH3; Z = N-CH3); (-) - N<sup>1</sup>, N<sup>8</sup>-bisbenzylnorphenserin (Q = phenyl; E = CH2C<sub>6</sub>H<sub>5</sub>; Z =
N-CH<sub>2</sub>C<sub>6</sub>H<sub>5</sub>); tolserine (Q = o-tolyl; E = CH<sub>3</sub>; Z = N-CH<sub>3</sub>); N<sup>1</sup>benzylnortolserine (Q = o-tolyl; E = CH3; Z = N-CH2-C6H5); N ^ phenethylnortolserine (Q = o-tolyl; E = CH3; Z = N-CH2CH2-CSH5); N ^ nortolserine (Q = o-tolyl; E = CH3; Z = NH); N<sup>to</sup>-benzylnortolserine (Q = o-tolyl; E = N-CH2-C<sub>6</sub>H<sub>5</sub>; Z = N15 CH<sub>3</sub>); N<sup>8</sup>-phenethylnortolserine (Q = o-tolyl; E = N-CH2-CH2C6H5; Z = N-CH3); N<sup>8</sup>-nortolserine (Q = o-tolyl; E = Η; Z = N-CH3); N<sup>1</sup>, N<sup>8</sup>-bisnortolserine (Q = o-tolyl; E = Η; Z = NH); (-) -N<sup>1</sup>, N<sup>8</sup>-bisbenzylnortolserine (Q = o-tolyl; E =
CH<sub>2</sub>C<sub>6</sub>H<sub>5</sub>; Z = N-CH<sub>2</sub>C<sub>6</sub>H<sub>5</sub>); cymserine (Q = p-isopropylphenyl; E = CH<sub>3</sub>; Z = N-CH<sub>3</sub>); N<sup>1</sup>-benzylnorcymserine (Q = pisopropylphenyl; E = CH3; Z = N-CH2-C6H5); N<sup>1</sup>f-ethylnorcymerine (Q = p-isopropylphenyl, - E = CH3; Z = NCH<sub>2</sub>-CH<sub>2</sub>-C<sub>6</sub>H<sub>5</sub>); N ^ norcirnserin (Q = p-isopropylphenyl; E = CH<sub>3</sub>; Z = NH); N<sup>8</sup>-benzyInoreimserine (Q = p-isopropylphenyl;
E = N-CH<sub>2</sub>-C<sub>6</sub>H<sub>5</sub>; Z = N-CH<sub>3</sub>); N<sup>8</sup>-phenethylnorcymerine (Q = pNCH<sub>3</sub>)
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INSTITUTO MEXICANO DE LA rWHEDAS INDVSTUA1.
<img file="MX347901B_D0027.tif" />
or,
N -norcymerine .8 isopropylphenyl; E = N-CH<sub>2</sub>CH<sub>2</sub>C<sub>and</sub>H<sub>s</sub>; (Q = p-isopropylphenyl; E = bisnorcymerine (Q = p-isopropylphenyl; E = Η; Z = NH); (-JN<sup>1</sup>, ^ - bisbenzylnorcymerine (Q = p-isopropylphenyl; E = CH<sub>2</sub>C<sub>6</sub>H<sub>5</sub>; Z = N-CH<sub>2</sub>C<sub>6</sub>H<sub>5</sub>); thiazimserine (Q = p-isopropylphenyl; E = CH<sub>3</sub>; Z = S); thiatolserine (Q = o-tolyl; E = CH<sub>3</sub>; Z = S).
Donepezil hydrochloride, (2R, 3R) -Rivastigmine acid tartrate and galantamine are the preferred AIChEIs.
Advantageously, the nsPAChAs used are quaternary ammonium nsPAChAs, sulfonium nsPAChAs, 3,4-dihydro-l-phenyl-2 (1H) -iso-quinolinecarboxylate of (IS) - (3R) 1-azabicyclo [2.2.2] oct-3 -yl (solifenacin) and its pharmaceutically acceptable salts, l-methylpiperidin-4-yl (propiverine) 2,2-di (phenyl) -2-propoxyacetate and its pharmaceutically acceptable salts, 1,4,5,6-tetrahydro-1-methylpyrimidin-2-ylmethyl (oxyphencyclimine) α-cyclohexyl-hydroxy-α-phenylacetate and its pharmaceutically acceptable salts, (R) -N, N-diisopropyl-3- (2-hydroxy-5 -methylphenyl) -3-phenylpropanamine (tolterodine) and its pharmaceutically acceptable salts. Preferably, the nsPAChAs are compounds with a duration of action of at least 6 hours, advantageously 8 to 24 hours, more advantageously 10 to 24 hours, preferably 12 to 24 hours, although they can be used successfully.
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<img file="MX347901B_D0028.tif" />
nsPAChAs having an appropriate duration of action corresponding to the duration of action of the concomitantly administered AChEI.
Particularly advantageous quaternary ammonium nsPAChAs or sulfonium nsPAChAs are the compounds of formula II <sup>Rl</sup>
R<sub>2</sub> C— (COO) - (X) -R (II) r<sub>3</sub> where
- R is a radical selected from the group consisting of those formulas (a) - (e)
<img file="MX347901B_D0029.tif" />
(a B C D E)
A is methyl and A 'is an alkyl group of 1 to 4 carbon atoms or 2-fluoroethyl or A and A' form a 1,4-butylene or 1,5-pentylene chain, L is hydrogen or methoxy, Alk and Alk 'are each alkyl of 1 to 4 carbon atoms and Y is a bivalent radical selected from the group consisting of 1,2-ethylene, 1,3-propylene, 1,4-butylene, and 2-oxa-1,3-propylene ; the corresponding counterion is a pharmaceutically acceptable anion, such as chlorine, bromine, iodine, tartrate, tartrate anion
<img file="MX347901B_D0030.tif" />
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INSTITUTO MEXICANO DE LA MONEDA · INDUSTRIAL of hydrogen, sucoinate, maleate, fumarate, sulfate, hydrogen sulfate or methylsulfate;
- n and m are, independently, zero or 1;
- X is an alkylene group of 2 to 3 carbon atoms;
- R<sub>x</sub> and R<sub>2</sub> are each phenyl, cyclopentyl, cyclohexyl,
1-cyclohexenyl, 2-thienyl and, when R is a radical (a), they also each represent alkyl of 1 to 4 carbon atoms;
- R<sub>3</sub> is H or OH or, only when R is a radical (a), also a group COOAlq, Alq is an alkyl group of 1 to 4 carbon atoms.
Exemplary nsPAChAs of formula II used above to prepare medicaments for the treatment of dementia of the Alzheimer's type in combination with AchEIs are - anisotropin methyl bromide [R = (a), A = A '= CH<sub>3</sub>, L =
Η; n = 1; m = 0; Ri = R<sub>2</sub> = nC<sub>3</sub>H<sub>7</sub>; R<sub>3</sub> = H; ];
- cyclotropium bromide [R = (a), A = CH<sub>3</sub>, TO<sup>z</sup>= isopropyl, L = Η; n = 1; m = 0; R<sub>3</sub> = phenyl; R<sub>2</sub> = cyclopentyl; R<sub>3</sub> = H];
- flutropium bromide [R = (a), A = CH<sub>3</sub>, A '= 2-fluoroethyl, L = Η; n = 1; m = 0; Ri = R<sub>2</sub>= phenyl; R
OH];
- homatropin methyl bromide [R = (a), A = A '= CH<sub>3</sub>, L = Η; n = 1; m = 0; R<sub>3</sub> = phenyl; R<sub>2</sub> = R<sub>3</sub> = H];
<sup>37</sup> IMPI
MEXICAN INSTITUTE
OF INDUSTRIAL PROPERTY
- syntropium bromide; [R = (a), A = CH<sub>3</sub>, A '= isopropyl,
L = Η; n = 1; m = 0; Ri = R<sub>2</sub> = nC<sub>3</sub>H<sub>7</sub>; R<sub>3</sub> = H];
- tematropium methylsulfate [R = (a), A = A '= CH<sub>3</sub>, L = H;
n = 1; m = 0; R1 = phenUO; R<sub>2</sub> = COOC<sub>2</sub>H<sub>5</sub>; R<sub>3</sub> = H];
- tropenziline bromide [R = (a), A = A '= CH<sub>3</sub>, L = methoxy; n = 1; m = 0; Ri = R<sub>2</sub> = phenyl, R<sub>3</sub> = OH];
- trospium chloride [R = (a), A + A '= 1,4-butylene, L =
Η; n = 1; m = 0; Rx = R<sub>2</sub> = phenyl; R<sub>3</sub> = OH];
- clidinium bromide [R = (b) -3-, Alk = methyl; n = 1; m = 0; Ri = R<sub>2</sub> = phenyl; R<sub>3</sub> = OH];
- droclidinium bromide [R = (b) -3-, Alk = methyl; n = 1;
m = 0; Ri = phenyl; R<sub>2</sub> = cyclopentyl; R<sub>3</sub> = OH];
- benzylonium bromide [R = (c) -3-, both Alk and Alk '= ethyl; n = 1; m = 0; R<sub>x</sub> = R<sub>2</sub> = phenyl; R<sub>3</sub> = OH];
- benzopyrronium bromide [R = (c) -3-, both Alk and
Alk '= methyl; n = 1; m = 0; Ri = R<sub>2</sub> = phenyl; R<sub>3</sub> = OH];
- cyclopyrronium bromide [R = (c) -3-, Alq = methyl and
Alq '= ethyl; n = 1; m = 0; Ri = phenyl; R<sub>2</sub> = cyclopentyl; R<sub>3</sub> = H];
- glycopyrronium bromide (glycopyrrolate) [R = (c) -3-, both Alk and Alk '= methyl; n = 1; m = 0; R<sub>x</sub> = phenyl;
R<sub>2</sub> = cyclopentyl, R<sub>3</sub> = H];
- heteronium bromide [R = (c) -3-, both Alk and Alk '= methyl; n = 1; m = 0; Ri = phenyl; R<sub>2</sub> = 2-thienyl; R<sub>3</sub> =
IMPI
MEXICAN INSTITUTE OF PROPERTY
- hexopyrronium bromide [R = (c) -3-, both Alk and Alk '= methyl; n = 1; m = 0; Ri = phenyl; R<sub>2</sub> = cyclohexyl; R<sub>3</sub> = H];
- oxypyrronium bromide [R = (c) -2-, both Alk and Alk '= methyl; n = 1; m = 1; X = 1,2-ethylene; R<sub>x</sub> = phenyl; R<sub>2</sub> = cyclohexyl; R<sub>3</sub> = OH];
- ritropyrronium bromide [R = (c) -3-, both Alk and Alk '= methyl; n = 1; m = 0; Ri = phenyl; R<sub>2</sub> = cyclopentyl; R<sub>3</sub> = OH];
- ethipyrium iodide [R = (d), Alk = methyl, Y = 1,2-ethylene; n = 1; m = 1; X = 1,2-ethylene; Ri = R<sub>2</sub> = phenyl; R<sub>3</sub> = OH];
- phenclexonium methylsulfate [R = (d), Alk = CH<sub>3</sub>, Y = 1,3-propylene; n = 0; m = 1; X = 1,2-ethylene; Ri = phenyl; R<sub>2 </sub>= 1-cyclohexenyl; R<sub>3</sub> = H];
- tricyclamol chloride (procyclidine methochloride) [R = (d), Alk = methyl, Y = 1,2-ethylene; n = 0; m = 1; X = 1,2-ethylene; Ri = phenyl; R<sub>2</sub> = cyclohexyl; R<sub>3</sub> = OH];
- thimmonium iodide [R = (d), Alk = methyl, Y = 2-oxa1,3-propylene; n = 0; m = 1; X = 1,2-ethylene; Ri = phenyl; R<sub>2</sub> = 2-thienyl; R<sub>3</sub> = OH];
- hexasonium iodide [R = (e); n = 1; m = 1; X = 1,2ethylene; Ri = phenyl; R<sub>2</sub> = cyclohexyl; R<sub>3</sub> = H], - and
- oxisonium iodide [R = (e); n = 1; m = 1; X = 1,2ethylene; Ri = phenyl; R<sub>2</sub> = cyclohexyl; R<sub>3</sub> = OH.
Azonia spiro [3p-benzyloyloxyIMPI
INSTITUTO MEXICANO de la nomoAD
INDUSTRIAL (Ια, 5α) -no rtropane-8,1'-pyrrolidine] (formula II, A + A '= 1,4-butylene) described in United States Patent No. 3,480,626, known under its Non-Patented Name , International trospium chloride, the tartrate, maleate, fumarate and succinate salts of trospium, solifenacin, described in US Patent No. 6,017,927 and the compound thereof with succinic acid, propiverine, described in DD 106643 and the hydrochloride thereof, oxypheneiclimine, described in GB 795758 and the hydrochloride thereof, tolterodine, described in US Patent No. 5,382,600 and hydrogen tartrate thereof are the preferred nsPAChAs. Other acceptable, pharmaceutical salts of trospium, in particular those with succinic and tartaric acid, are cited in US 2006/0293356. Trospium is a long-acting nsPAChA whose absorbed amount has a mean half-life in plasma of approximately 18 hours.
The fact is that nsPAChAs allow an increase in the therapeutic, maximum tolerated doses of AChEIs from a randomized, controlled safety, tolerability, pharmacokinetic and pharmacodynamic study of an AChEI agent alone, such as rivastigmine, and with a nsPAChA, such as trospium chloride, in normal volunteers.
Oral dosage forms were used,
<img file="MX347901B_D0031.tif" />
IMPI
INSTITUTO MEXICANO I HEARD THE INDUSTRIAL CURRENCY approved, standard for both rivastigmine [as hydrogen (2R, 3R) -tartrate] and trospium chloride (named simply trospium in the study). Trospium placebo tablets are essentially identical in appearance to standard trospium tablets. All drugs were administered by the oral route, once a day in the morning.
The primary objective of the study is to determine the maximum tolerated dose (MTD) of representative AChEI rivastigmine as a monotherapy, that is, when rivastigmine is administered alone by the oral route in daily doses ranging from 3 mg to 36 mg mg, and as a combination therapy, that is when rivastigmine is administered orally together with the representative nsPAChA trospium in daily doses of 20 or 40 mg.
The secondary objective of the study is to determine the ability of trospium to affect EEG activity when administered with the rivastigmine MTD.
This is a randomized, blinded, placebo-controlled, crossover and parallel, escalating dose, non-therapeutic study conducted in 36 subjects at a single center for up to 14 days. Medical procedures including medical history, physical examination, vital signs and laboratory tests are performed under screening, at pre-specified intervals
IMPI
INSTITUTO MSXICANO DfLZNUJTIiOAD INDUSTRIAL
<img file="MX347901B_D0032.tif" />
regular throughout the study and at a follow-up visit 7 days after the last drug administration. An EEG is obtained 5 hours after the administration of the first and last doses of trospium. During the study, individual daily doses of rivastigmine. or rivastigmine placebo and trospium or trospium placebo are both administered by the oral route at 8 AM. All subjects are given nothing orally (NPO) for 8 hours prior to and up to 4 hours after drug administration. Daily doses of rivastigmine acid tartrate start at 3 mg and can range up to 36 mg (rivastigmine basis) in small increments, as clinically appropriate; daily doses of trospium start at 20 mg and can be increased to 40 mg, as clinically appropriate.
Subjects are ages 18 to 80, inclusive, who are considered to be in good general health. Concomitant medications are not allowed, except those known not to enter the central nervous system or affect cholinergic function peripherally and are administered in stable doses throughout the study.
Safety and tolerability are evaluated based on adverse clinical experiences (AEs), vital signs (pressure settling
IMPI ^^
MEXICAN INSTITUTE
FROM AGE
INDUSTRIAL systolic and diastolic blood; radial pulse rate), 12-lead ECG, laboratory tests including urinalysis and physical examination. Specifically in relation to rivastigmine ESAs, the following are always evaluated: anorexia, nausea, vomiting. In relation to Trospian ESAs, the following are always evaluated: dry mouth, constipation, dyspepsia, abdominal pain, blurred vision, headache, dizziness, drowsiness, and confusion.
For pharmacokinetic evaluation, venous blood samples are drawn on Study Days when rivastigmine is given in your MTD as monotherapy and when rivastigmine is given in your MTD with trospium (nominally on Study Days 5 and 11) to measure serum concentrations of both drugs 75 minutes after oral administration.
Analysis of primary and secondary endpoints is performed on both the intent-to-treat (ITT) population and the study integrators. The ITT population includes all randomized subjects who have received all baseline assessments and at least one post-randomization assessment.
For its intended use, nsPAChA is pharmaceutical compositions comprising, formulated as an active ingredient thereof, nsPAChA in a mixture.
I ΝΓΤΤΓυΤΟ Μ UICANο Μ LA ΜΟΙΙΒΑΒ (NBUSTIUAL with a pharmaceutical carrier.
NsPAChA is present in an amount that reduces the peripherally mediated adverse effects that would be caused by administration of a dose of AChEl sufficient to maximize disease-associated dementia and other neurobehavioral symptoms.
Thus, according to another of its aspects, the present invention provides a pharmaceutical composition to induce a higher inhibition of acetylcholine esterase in the CNS of a patient suffering from dementia of the Alzheimer type, the patient takes a dose of inhibitor of acetylcholine esterase (AChEl) higher than the maximum tolerated dose, comprising, as active ingredient, an anticholinergic agent, peripheral, non-selective (nsPAChA) in a mixture with a pharmaceutical carrier. By means of this induction of higher acetylcholine esterase inhibition, which cannot otherwise be achieved when AChEIs are taken alone, the symptoms of dementia of the Alzheimer type in patients are further improved in this way.
Advantageously, these pharmaceutical compositions comprise the active ingredient of nsPAChA in an amount of 20% to 200% of the dosage used in the compositions currently used for the treatment of disorders such as gastrointestinal cramp, spasms
<img file="MX347901B_D0033.tif" />
IMPI INSTITUTO MEXICANA MLAPt HEDAD inpustiuai of bladder, asthma, motion sickness, muscle spasms and contractive smooth muscle disorders. The compositions prepared using the nsPAChAs according to the present invention allow the administration of 1.5 to 4 times the maximum tolerated dose of AChEI to patients suffering from dementia of the Alzheimer type without clinically significant symptoms of overstimulation of the peripheral cholinergic system.
The compositions are preferably formulated in dosage unit forms for oral or parenteral, particularly transdermal, administration, wherein the active ingredient is mixed with a pharmaceutical carrier.
The pharmaceutical compositions prepared using the nsPAChAs according to the present invention are indicated in the treatment of the symptoms of dementias of the Alzheimer's type in order to improve the symptoms to a greater degree by allowing an increase in the currently used doses of a concurrent AChEI or sequentially administered with them, without the collateral effects that would hinder the increase in therapeutic doses.
Preferred pharmaceutical compositions for oral administration using trospium chloride as the preferred active ingredient may contain 4 to 40 mg, preferably 10 to 40 mg, of the active ingredient.
IMPI
INSTITUTO MEXICANO DE LA FttMEDAD INDUSTRIA!
preferably 30
The compositions are administered in IR formulations or from 15 to 120 mg, to 120 mg, in ER formulations.
Preferred pharmaceuticals allow concurrent or sequential of, for example, 5 to 40 mg of donepezil hydrochloride, 3 to 20 mg of rivastigmine tartrate or 8 to 40 mg of galantamine without appreciable side effects.
According to an advantageous embodiment, the pharmaceutical compositions that are prepared by using the nsPAChAs according to the present invention are present in unit forms that also contain other active ingredients, in particular an AChEI which acts as a cholinergic agent in the CNS to improve the symptoms of dementia of the Alzheimer type, in an amount sufficient to alleviate the neurobehavioral symptoms associated with the disease as much as possible, with minimal adverse effects associated with treatment.
Thus, another objective of the present invention is to provide a pharmaceutical unit form which comprises (a) an nsPAChA selected from the group consisting of solifenacin, pharmaceutically acceptable salts of solifenacin, propiverine, pharmaceutically acceptable salts of propiverine, oxyphencyclimine, pharmaceutically acceptable salts acceptable oxyphencyclimine,
<img file="MX347901B_D0034.tif" />
tolterodine, pharmaceutically acceptable salts of
IMPI
INSTITUTO MEXICANO K LA FROHÍDAD INDUSTRIAL tolterodine and quaternary ammonium or sulfonium compounds of formula II <sup>Rl</sup> \
R<sub>2</sub>--c— (COO) - (X) -R r<sub>3</sub> (II) where
- R is a radical selected from the group consisting of those of formulas (a) - (e)
<img file="MX347901B_D0035.tif" />
A is methyl and A 'is an alkyl group of 1 to 4 carbon atoms or 2-fluorine or A and A' form a 1,4-butylene or 1,5-pentylene chain, L is hydrogen or Methoxy, Alk and Alk 'are each alkyl of 1 to 4 carbon atoms and Y is a bivalent radical selected from the group consisting of 1,2-ethylene, 1,3-propylene, 1,4-butylene, and 2-oxa1 , 3-propylene; the corresponding counterion is a pharmaceutically acceptable anion;
- n and m are, independently, zero or 1;
- X is an alkylene group of 2 to 3 carbon atoms;
<sup>47</sup> IMPIé ^
MEXICAN INSTITUTE
OF THE CURRENCY
INDUSTRIAL
- Ri and R<sub>2</sub> they are each phenyl, cyclopentyl, cyclohexyl, 1-cyclohexenyl, 2-thienyl and, when R is a radical (a), they also each represent alkyl of 1 to 4 carbon atoms;
- R<sub>3</sub> is H or OH or, only when R is a radical (a), also a group COOAlq, Alq is an alkyl group of 1 to 4 carbon atoms; and (b) an AChEI;
in a mixture with at least one pharmaceutical carrier.
The pharmaceutical composition for improving the treatment of human dementias of the Alzheimer type according to the present invention may comprise a mixture of an nsPAChA [component (a)] and an AChEI [component (b)], wherein component (b) is present in an amount sufficient to alleviate the neurobehavioral symptoms associated with the disease as much as possible and where component (a), which does not appreciably penetrate blood-brain barriers, it is present in a second amount which reduces peripherally mediated adverse effects that would be caused by AChEI if administered without the accompanying nsPAChA.
Advantageous nsPAChAs are solifenacin and its salts, propiverine and its salts, oxyphencyclimine and its salts and quaternary ammonium salts or sulfonium salts of formula II above, such as quaternary salts of <sup>48</sup>
INSTITUTO MÜXJCANO DE LA HKIMEDAD ^ i ^ UV INDUSTRIAL homatropine, quaternary salts of anisotropin, quaternary salts of trospium, quaternary salts of clidinium, quaternary salts of benzylonium and quaternary salts of glycopyrronium.
The preferred component (a) is a pharmaceutically acceptable salt of trospium, especially trospium chloride, succinate, maleate, fumarate or tartrate, a pharmaceutically acceptable salt of solifenacin, especially its compound with succinic acid 1: 1, a pharmaceutically acceptable salt of propiverine , especially its hydrochloride, a pharmaceutically acceptable salt of oxyphencyclimine, especially its hydrochloride or a pharmaceutically acceptable salt of tolterodine, especially its Lhydrogen tartrate.
Advantageous components (b) are 1,2,3,4tetrahydro-9-acridinamine (tacrine), 9-amino-2,3,5,6,7,8 hexahydro-lH-cyclopenta [b] quinoline (ipidacrine); (+) - 2,3-dihydro-5,6-dimethoxy-2 - [[1- (phenylmethyl) -4-piperidinyl] methyl] -IH-inden-1-one (donepezil) and its pharmaceutically acceptable salts, carbamate of ( S) -N-Ethyl-Nmethyl-3- [1- (dimethylamino) ethyl] -phenyl (rivastigmine) and its pharmaceutically acceptable salts, 4aS, 6R, 8aS-3-methoxy-llmethyl-4a, 5,9,10, 11,12-hexahydroxy-6H-benzofuro [3a, 3,2-e, f] benzazepin-6-ol (galantamine); (IR, 9S, 13E) -l-amino-1349
<img file="MX347901B_D0036.tif" />
IMPI
INSTITUTO MEXICANO DE LA PROPERTY INDUSTRIAL ethylidene-ll-methyl-6-azatricyclo [7.3.1. OR<sup>2,7</sup>] trideca
2 (7), 3,10-trien-5-one (huperzine A) and phenserine and their analogues included by the general formula I.
Advantageous AChEIs include those that are now part of the standard care for patients suffering from dementia of the Alzheimer's type and that are also widely used off-label for various other chronic progressive disorders of cognitive function. AChEIs have as a general mechanism of action the improvement of neurotransmission mediated by acetylcholine. All act in the human CNS to increase and prolong the availability of acetylcholine by inhibiting its degrading enzyme acetylcholinesterase, such as donepezil; pharmaceutically acceptable salts of donepezil, especially the hydrochloride thereof; icopezil, pharmaceutically acceptable salts of icopezil, especially the maleate thereof, carrpezil, pharmaceutically acceptable salts of carrpezil, especially the fumarate thereof, rivastigmine; pharmaceutically acceptable salts of rivastigmine, especially hydrogen tartrate thereof; galantamine; pharmaceutically acceptable salts of galantamine; Huperzine A.
The preferred component (b) is an AChEI selected from the group consisting of tacrine; Huperzine A, Donepezil Hydrochloride; hydrogen- (2R, 3R) -tartrate
<img file="MX347901B_D0037.tif" />
IMPI
INSTITUTO MEXICANO DE LA FROMBDA »INDUSTRIAL of rivastigmine (rivastigmine tartrate); galantamine, the latter three compounds being particularly preferred. As previously discussed, AChEIs vary in their pharmacological profiles and in their affinities for AChE and butyrylcholinesterase.
The dose of component (b) may vary according to the intrinsic inhibitory potency of acetylcholine esterase of the compound. Advantageously, the dose is 1.5 times to 4 times higher than the maximum tolerated dose currently used when the same AChEI is administered alone.
In the unit forms of the present invention, for immediate release or extended release, the nsPAChA component (a) is present in an amount from 20% to 600% of the amount of the nsPAChA contained in the administered IR dosage unit forms. currently for the treatment of disorders such as gastrointestinal cramps, urinary bladder spasm, asthma, motion sickness, muscle spasms and the AChEI component (b) is present in an amount from 100% to 600% of the amount of the AChEI contained in the IR dosage unit forms currently administered for the treatment of dementia of the Alzheimer's type.
More particularly, nsPAChA is present, in
<img file="MX347901B_D0038.tif" />
a unitary form of IR,
IMPI
INSTITUTO MEXICANO DE LA PRjOWBBAX »INDUSTRIAL in an amount ranging from 20% to 200% of the amount of nsPAChA contained in the IR dosage unit forms currently administered for the treatment of the disorders listed above or, in an ER unit form, in an amount ranging from 75% to 600% of the amount of the nsPAChA contained in IR unit dosage forms currently administered for the treatment of the above-cited disorders. For example, trospium chloride, which is a preferred anticholinergic agent used as component (a), is present in an amount from 4 mg to 120 mg per dosage unit, in particular from about 4 to about 40 mg. , preferably 10 to 40 mg, per dosage unit in IR unit form or in an amount of 15 to 120 mg, preferably 30 to 120 mg, in ER unit form, that is, in an amount of 20% to 600% of the amount of trospium chloride which is present in IR unit forms for the treatment of overactive bladder.
In unit form for immediate release or extended release, the AChEI component (b) is present in an amount from about 100% to about 600% of the amount of AChEI contained in IR dosage unit forms currently administered for treatment. dementia of the type
<img file="MX347901B_D0039.tif" />
IMPI
MEXICAN INSTITUTE
M LA MOPIEHaD
INDUSTRIAL
Alzheimer's.
More particularly, the AChEI component (b) is present in IR unit form, in an amount ranging from about 100% to about 400%, preferably from 150% to 400%, of the amount of the AChEI contained in the unit forms. IR dosage doses currently administered for the palliative treatment of dementia of the Alzheimer's type or, in ER unit form, in an amount ranging from 150% to 600%, preferably from 200% to 600%, of the amount of AChEI contained in IR unit dosage forms currently administered for the treatment of dementia of the Alzheimer type. For example, among the preferred components (b), donepezil hydrochloride is present in an amount of 5 mg to 60 mg, preferably 7.5 to 60 mg, per dosage unit, rivastigmine, as hydrogen tartrate thereof , is present in an amount of 1.5 mg to 36 mg, preferably 2.25 mg to 36 mg per dose unit, galantamine is present in an amount of 4 to 72 mg per dose unit. Huperzine A is present in an amount of 100 gg to 1.2 mg, preferably 150 gg to 1.2 mg per dose unit.
Advantageously, AChEI can be administered in a dose that is higher than the maximum tolerated dose of the same AChEI when administered alone and will be
<img file="MX347901B_D0040.tif" />
IMPI
INSTITUTO MACANO OE LA PROMBDAD indüstiual times higher than the doses of the dementia treatment of the invention preferably from 1.5 to 4 currently recommended in Alzheimer's type.
The unit form will be a tablet, a capsule, a pre-measured volume of a liquid solution or suspension for oral administration or a patch for transdermal application. In unit form, nsPAChA and AChEI can be mixed together or separately according to known technologies in admixture with a pharmaceutical carrier in a pharmaceutical composition.
Component (a) and component (b) are formulated with conventional pharmaceutical carriers in known formulations for oral use where the components are mixed together or separately, for example in two tablets filled in a capsule or in a two-compartment capsule. or in a multilayer (bi-layer) tablet where the two components are both in IR form or in ER form or one of the two components is in IR form and the other is in ER form, according to known technologies.
Pharmaceutical carriers and vehicles are those commonly used for the preparation of compositions for oral, buccal, and parenteral administration, particularly transdermal. The forms
<img file="MX347901B_D0041.tif" />
Appropriate unit units comprise the
IMPI
MEXICAN INSTITUTE
M INDUSTRIAL PROPERTY oral forms such as tablets, soft or hard gelatin capsules, powders or granules in sachets, and appropriately measured oral solutions or suspensions as well as patches for transdermal administration.
Component (a) and component (b) may also be present in the form of one of their complexes with a cyclodextrin, for example a-cyclodextrin, β-cyclodextrin, γ-cyclodextrin, 2-hydroxypropyl-pcyclodextrin or methyl-p-cyclodextrin .
Component (a) and component (b) can also be formulated in the form of microcapsules, optionally with one or more carriers or additives.
For oral administration, component (a) and component (b), together or separately, are formulated by mixing the active ingredient with conventional, pharmaceutically acceptable carriers that make it possible for the active ingredients to be formulated into tablets, lozenges, tablets. oral disintegration agents, capsules, liquid solutions or suspensions, syrups and the like.
Carriers for IR tablets include for example starches, cellulose and derivatives thereof; lubricants such as talc, stearic acid, or magnesium stearate; diluents such as talc, cellulose in
IMPI »^
INSTITUTO MEXICANO M LA MOFISDAD INDUSTRIAL powder, lactose, starches such as corn starch, mannitol, sorbitol; disintegrating agents such as microcrystalline cellulose or crospovidone; lubricants such as polyethylene glycol or magnesium stearate; ligands such as methyl cellulose, sodium carboxymethyl cellulose, alginic acid, alginates; sweeteners, such as sucrose, dextrose, mannitol, saccharin; or flavoring agents such as natural or synthetic oils.
Carriers for orally disintegrating tablets include for example lubricants, aggregating agents, sweetening, flavoring or disintegrating agents as well as agents that enhance the absorption into the oral mucosa of components (a) and (b) such as sorbitol, mannitol, lactose and cellulose.
Carriers for suspensions or liquid solutions, usually aqueous, include for example antioxidants, such as sodium metabisulfite or sodium sulfite, thickening agents, such as microcrystalline cellulose, hydroxypropyl cellulose, carboxymethyl cellulose or polyvinylpyrrolidone, preservatives such as methyl paraben, ethyl parabeniamine tetraetra, sodium, sodium benzoate, or an alkaline salt of sorbic acid, as well as flavoring and sweetening agents.
The sweeteners contained in the tablets of <sup>baby</sup>
INSTITUTO MEXICANO A • E LA PROPERTY
INDUSTRIAL <sup>M</sup> Oral disintegration and liquid solutions or suspensions can be optional natural reduced sugars such as sucrose, dextrose, xylitol, mannitol or sorbitol, or a synthetic product such as saccharin sodium or aspartame.
Flavoring agents are pharmaceutically acceptable flavors and essences of synthetic and natural oils, the latter extracted from plants, leaves, flowers, fruits and their combinations, such as cinnamon, mint, anise and citrus leaves, bitter almond, citrus fruits, in particular orange and / or lemon, linden and grape oils. Chocolate, vanilla or eucalyptus flavor and fruit essences, in particular apple, pear, peach, strawberry, cherry, apricot, orange, lemon and grapes can also be used advantageously.
The composition according to the present invention may be in the form of a capsule containing two tablets as described earlier herein, one of which comprises component (a) and the other one comprising component (b).
The nsPAChA / AChEI association can be formulated into tablets in which one or both components are in a controlled release formulation, for example as a dispersion of the component in hydroxypropyl methylcellulose or in a film-coated microgranule.
<img file="MX347901B_D0042.tif" />
IMPI
MEXICAN INSTITUTE OF INDUSTRIAL FEOFIEDAD
Advantageously, AChEI, in an ER formulation is in the core and nsPAChA, in IR formulation, is in the outer layer in multi-layer tablets in which, for example, both the core and the outer layer are coated with a movie. Similarly, capsules made of two separate parts, one containing component (a), in an IR or ER formulation and the other containing component (b), can be used in the IR or ER formulation.
Carriers and vehicles for ER tablets include retardant materials such as acrylic and methacrylic acid polymers and copolymers; cellulose derivatives such as hydroxypropylmethylcellulose, hydroxyethylcellulose, hydroxypropylethylcellulose, hydroxypropylcelluloses, methylcellulose, ethylcellulose or sodium carboxymethylcellulose; rubbers; waxes; glycerides or aliphatic alcohols or a mixture thereof.
In particular, the unit forms of the present invention comprise a pharmaceutically acceptable salt of trospium as an nsPAChA and a member selected from the group consisting of tacrine, in an amount of 10 mg to 160 mg, donepezil and its pharmaceutically acceptable salts, in a amount from 5 mg to 40 mg, rivastigmine and its pharmaceutically acceptable salts, in an amount from 1.5 to 36 mg, galantamine, in a
<img file="MX347901B_D0043.tif" />
IMPI
INSTITUTO MEXICANO pe the INDUSTRIAL currency amount from 4 to 48 mg, and huperzine A, in an amount of
100 μg to 1.2 mg as an AChEl.
According to one embodiment, the compositions of the present invention are formulated by mixing component (a) and component (b) together, in admixture with a pharmaceutical carrier for immediate or extended release. An advantageous composition according to this embodiment comprises from 4 to 40 mg of trospium chloride, as component (a); and
- 5 to 50 mg of donepezil (as hydrochloride); or
- from 1.5 to 30 mg of rivastigmine (as hydrogen tartrate); or
- from 4 to 60 mg of galantamine, as component (b) where components (a) and (b) are mixed together and with a pharmaceutical carrier in an IR formulation, the composition is intended to be administered once or twice up to date.
According to another embodiment, the compositions of the present invention are formulated by mixing component (a) with a pharmaceutical carrier for immediate or extended release in tablets (Tablet A) and component (b), separately, with a carrier. pharmacist for immediate or extended release tablets (Tablet B) and insert Tablet A and Tablet
B in a capsule for oral administration as described
IMPI
ΙΝΓΓΠυΤΟ MEXICAN
OUR PROPERTY
INDUSTRIAL
<img file="MX347901B_D0044.tif" />
described for example in GB 1204580 or US 2007/0224259. An advantageous composition according to this embodiment consists of soft or hard gelatin capsules each containing Tablet A comprising 4 to 40 mg of trospium chloride, as component (a), in a mixture with a pharmaceutical carrier in an IR formulation; and Tablet B, comprising
- 5 to 50 mg of donepezil (as hydrochloride); or
- from 1.5 to 30 mg of rivastigmine (as hydrogen tartrate); or
- 4 to 50 mg of galantamine, as component (b), with a pharmaceutical carrier in an IR formulation, the composition is intended to be administered once or twice a day.
According to a further embodiment, the compositions according to the present invention are formulated in a bilayer tablet which releases two doses of drug, in which the release of a drug from a drug-containing layer does not interfere with the release of a drug. drug from the other drug-containing layer as described for example in WO 2006/089493. An advantageous composition according to this embodiment consists of
<img file="MX347901B_D0045.tif" />
IMPI
ΙΝΤΤΓΠΙΤΟ MEXICAN OF THE INVUST1UAL PROPERTY Layer A, which. comprises 4 to 40 mg of trospium chloride, as component (a), with a pharmaceutical carrier in an IR formulation and Layer B, comprising 4 to 60 mg of galantamine, as component (b), in a mixed with a pharmaceutical carrier in an IR formulation, the composition is intended to be administered once or twice a day.
In accordance with another embodiment, the compositions of the present invention are formulated into oral disintegrable tablets. Particularly advantageous compositions according to this embodiment are oral disintegrable tablets comprising
- from 4 to 40 mg of trospium chloride, as component (a); and
- 5 to 50 mg of donepezil hydrochloride, as component (b), in a mixture with a pharmaceutical carrier in an IR formulation for absorption through the buccal mucosa, the composition is intended to be administered once or twice a day .
According to another embodiment, the compositions of the present invention are formulated in solutions for oral administration wherein component (a) and component (b) are dissolved or suspended in water in a mixture with a conventional carrier or vehicles. The
<img file="MX347901B_D0046.tif" />
MEXICAN INSTITUTE
OF PROHEOAD
INDUSTRIAL or oral suspensions that trospio, as the component compositions particularly this modality are solutions comprising - from 4 to 40 mg of chloride of (a); and - 4 to 50 mg of galantamine, as component (b), in a mixture with a pharmaceutical carrier in a liquid IR formulation for oral administration, the composition is intended to be administered once or twice a day.
According to another embodiment, the compositions of the present invention are formulated in a patch for transdermal administration. Particularly advantageous compositions according to this embodiment are transdermal patch formulations comprising - 4 mg / 24 hours to 120 mg / 24 hours of trospium chloride, as component (a); and
- from 4.6 mg / 24 hours to 30 mg / 24 hours of rivastigmine (as hydrogen tartrate), as component (b), with a pharmaceutically acceptable carrier or diluent which is suitable for transdermal, systemic administration.
Another embodiment of the present invention provides unit forms consisting of tablets which advantageously according to comprise <sup>62</sup> IMPI ^ T
MU1CAN INSTITUTE
M la frorump 'Oaaa ^ Pb
INDUSTRIAL
- 5 to 15 mg of solif enacin succinate, as component (a); and
- 4 to 50 mg of galantamine, as component (b), in a mixture with a pharmaceutical carrier in an IR formulation for oral administration, the composition is intended to be administered once or twice a day.
Compared to known drugs of the acetylcholine esterase inhibitor type now used alone in the treatment of dementias of the Alzheimer type, the above combined pharmaceutical composition shows greater and longer efficacy and fewer adverse effects by allowing the safe and tolerable administration of larger and thus more therapeutically effective amounts of the acetylcholine esterase inhibitor. In particular, the acetylcholine esterase inhibitor of the pharmaceutical compositions of the present invention is safe and effective, alone or in combination with other pharmaceutical products, in the treatment of patients in need of acetylcholine esterase inhibition, in particular dementias of the Alzheimer's type in a base once or twice a day.
Pathological conditions treated with the composition of the present invention include, but are not limited to, Alzheimer's disease, Parkinson's disease dementia, and other disorders of function.
<img file="MX347901B_D0047.tif" />
IMPI
INSTITUTO MEXICANO DE LA MONEDAD INDUSTRIAL human cognitive and neurobehavioral that are treated, in part, by means of pharmaceuticals intended to increase acetylcholine-mediated neurotransmission in the brain.
Therapeutic efficacy is measured by the degree to which the cognitive abilities and other neurobehavioral disabilities associated with dementias of the Alzheimer type, documented through the use of normal scales, are reduced.
The following examples illustrate the invention.
EXAMPLE 1
Orally disintegrating tablets containing 15 mg of donepezil hydrochloride and 20 mg of trospium chloride
One and a half kilograms of donepezil hydrochloride and 1.8 kg of cornstarch are fully mixed until complete homogenization of the mixture which, after passing through a 35 mesh sieve, is added with a previously prepared 2 kg mixture. of trospium chloride, thoroughly stirred together with 2.4 kg of cornstarch and sieved on 35 mesh. The mixture obtained in this way is added to 0.6 kg of strawberry flavor powder, 0.2 kg of sodium saccharin, 13.8 kg of lactose, 4.4 kg of microcrystalline cellulose and 2.9 kg of sorbitol. The mixture is combined until complete homogenization, then it is added to 0.1 kg of magnesium stearate, mixed again and
<img file="MX347901B_D0048.tif" />
IMPI
INSTITUTO MEXICANO Of LA PROPERTY INDUSTRIAL compressed with 7mm dies for ιη ^ ηηΛ disintegration tablets composition
Donepezil hydrochloride
Trospium Chloride
Cornstarch
Strawberry powder flavor
Sodium sacharine
Lactose
Microcrystalline cellulose
Oral sorbitol that have the following
15.00 mg
20.00 mg
42.00 mg
6.00 mg
2.00 mg
130.00 mg
44.00 mg
29.00 mg
Magnesium stearate 1.00 mg
EXAMPLE 2
Capsules for oral administration are prepared by mixing the following ingredients: Ingredients Parts by weight
Rivastigmine (as hydrogen tartrate) 900
Trospium chloride 2,000
Lactose USP7.350
Colloidal Silicon Dioxide (Aerosil<sup>MR</sup>)50
After combining, the mixture is sieved through a 40 mesh screen and filled into a No. 3 two-piece hard gelatin capsule containing 9 mg of rivastigmine and 20 mg of trospium chloride.
EXAMPLE 3
<img file="MX347901B_D0049.tif" />
Immediate-release tablets for
IMPI
ΙΗΤΠΤυΤΟ MEXICAN
OR INDUSTRIAL PROPERTY oral administration is prepared by mixing 1.8 kg of galantamine and 2.0 kg of trospium chloride, 0.25 kg of gelatin, 0.25 kg of magnesium stearate and 10 kg of cornstarch and forming the mixture into tablets containing 18 mg of galantamine and 20 mg of trospium chloride by means of a conventional tableting machine.
EXAMPLE 4
An oral liquid composition is prepared in a mixer equipped with a blade stirrer, where 18 0 0 g of galantamine and 5 kg of deionized water are added. The temperature is kept at 40 ° C and the mixture is vigorously stirred until complete solution. The temperature is brought to 25 ° C, then 20.22 g of potassium sorbate, 44.11 g of sodium metabisulfite and 147 g of commercial strawberry flavoring agent are added. Stirring continues at room temperature until a clear solution is obtained. The temperature of the solution obtained is brought to 20 ° C and added with a previously prepared solution containing 2757 g of xylitol, 2000 g of trospium chloride and 18.38 g of microcrystalline cellulose in 4.41 kg of deionized water. After gentle stirring to obtain a complete dispersion, the solution obtained in this way is passed through a 1.5 mesh of a<sup>66</sup> IMPI
INSTHVTOXUAICANO of the ntontiMti t ~ V ΛΛ fNDWfflUAl sieve. In this way, approximately 15 kg of a solution are obtained, to be introduced in 1500 unit doses of the following composition
<td>Galantamine</td><td>18.00 mg</td>
<td>Trospium Chloride</td><td>20.00 mg</td>
<td>Sodium metabisuphite</td><td>4.40 mg</td>
<td>Potassium sorbate</td><td>2.02 mg</td>
<td>Xylitol C</td><td>27.57 mg</td>
<td>Strawberry flavoring agent</td><td>80.00 mg</td>
<td>Microcrystalline cellulose</td><td>10.00 mg</td>
<td>Deionized water for</td><td>10,000.00 mg</td>
EXAMPLE 5
Tablets containing 4 mg of galantamine formulated with a pharmaceutical carrier, tablets containing 12 mg of galantamine formulated with a pharmaceutical carrier, and tablets containing 20 mg of trospium chloride formulated with a pharmaceutical carrier are dispensed in capsules as described. in GB 1,204,580, such that unit dosage forms are prepared containing 16 mg of galantamine and 20 mg of trospium. In the same way, unit dosage forms containing 8 mg of galantamine formulated with a pharmaceutical carrier, tablets containing 20 mg of galantamine formulated with a pharmaceutical carrier, and tablets containing 20 mg are prepared.
IMPI
<img file="MX347901B_D0050.tif" />
INSTITUTO MEXICANO DE LA PROPIEDAD INDUSTRIAL of trospium chloride formulated with a pharmaceutical carrier.
EXAMPLE 6
By operating as described in Example 1, but using 1.5 Kg of propiverine hydrochloride instead of 2 Kg of trospium chloride, the orally disintegrating tablets are obtained having the following composition Donepezil hydrochloride 15.00 mg
Propyrine Hydrochloride 15.00mg
Corn starch 42.00mg
Strawberry powder flavor 6.00mg
Saccharin sodium 2.00mg
Lactose 130.00mg
Microcrystalline cellulose 44.00mg
Sorbitol 29.00mg
Magnesium stearate 1.00mg
<img file="MX347901B_D0051.tif" />
ΙΜΡΙ (
MEXICAN INÜTTTUTO OF INDUSTRIAL PROPERTY
Contents95
54 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5 Sheet 6 Sheet 7 Sheet 8 Sheet 9 Sheet 10 Sheet 11 Sheet 12 Sheet 13 Sheet 14 Sheet 15 Sheet 16 Sheet 17 Sheet 18 Sheet 19 Sheet 20 Sheet 21 Sheet 22 Sheet 23 Sheet 24 Sheet 25 Sheet 26 Sheet 27 Sheet 28 Sheet 29 Sheet 30 Sheet 31 Sheet 32 Sheet 33 Sheet 34 Sheet 35 Sheet 36 Sheet 37 Sheet 38 Sheet 39 Sheet 40 Sheet 41 Sheet 42 Sheet 43 Sheet 44 Sheet 45 Sheet 46 Sheet 47 Sheet 48 Sheet 49 Sheet 50 Sheet 51 Sheet 52 Sheet 53 Sheet 54
62 members in 11 offices
Priority claims7
| Document | Office | Kind | Date |
|---|---|---|---|
| 08005750 | European Patent Office (EPO) | A | |
| 080057508 | European Patent Office (EPO) | – | |
| 2009001662 | United States of America | W | |
| 080057508 | – | – | – |
| EP20080005750 | – | – | – |
| PCTUS2009001662 | – | – | – |
| WO2009US01662 | – | – | – |
Members62
| Document | Office | Kind | |
|---|---|---|---|
| AU2009229372A1 | Australia | A1 | |
| CA2718411A1 | Canada | A1 | |
| WO2009120277A1 | World Intellectual Property Organization (WIPO) | A1 | |
| MX2010010460A | Mexico | A | |
| EP2271218A1 | European Patent Office (EPO) | A1 | |
| US2011021503A1 | United States of America | A1 | |
| CA2773592A1 | Canada | A1 | |
| US2011071135A1 | United States of America | A1 | |
| WO2011034568A1 | World Intellectual Property Organization (WIPO) | A1 | |
| EP2271218A4 | European Patent Office (EPO) | A4 | |
| JP2011518776A | Japan | A | |
| US2011201597A1 | United States of America | A1 | |
| AU2010296044A1 | Australia | A1 | |
| MX2012003207A | Mexico | A | |
| EP2478099A1 | European Patent Office (EPO) | A1 | |
| EP2478099A4 | European Patent Office (EPO) | A4 | |
| JP2013505235A | Japan | A | |
| US8404701B2 | United States of America | B2 | |
| US2013158012A1 | United States of America | A1 | |
| JP2014114295A | Japan | A | |
| US2014275036A1 | United States of America | A1 | |
| AU2009229372B2 | Australia | B2 | |
| US2014288057A1 | United States of America | A1 | |
| US8877768B2 | United States of America | B2 | |
| JP5647099B2 | Japan | B2 | |
| US2015005292A1 | United States of America | A1 | |
| AU2010296044B2 | Australia | B2 | |
| US9044472B2 | United States of America | B2 | |
| US2015224096A1 | United States of America | A1 | |
| IN2122DEN2012A | India | A | |
| AU2015213396A1 | Australia | A1 | |
| US9192591B2 | United States of America | B2 | |
| CA2718411C | Canada | C | |
| US9278092B2 | United States of America | B2 | |
| US2016143890A1 | United States of America | A1 | |
| JP2016179980A | Japan | A | |
| MX344177B | Mexico | B | |
| JP6050115B2 | Japan | B2 | |
| MX345236B | Mexico | B | |
| AU2009229372C1 | Australia | C1 | |
| JP2017036312A | Japan | A | |
| MX347901BThis record | Mexico | B | |
| EP2271218B1 | European Patent Office (EPO) | B1 | |
| EP3178477A1 | European Patent Office (EPO) | A1 | |
| US9744161B2 | United States of America | B2 | |
| DK2271218T3 | Denmark | T3 | |
| ES2634421T3 | Spain | T3 | |
| PL2271218T3 | Poland | T3 | |
| US2017312259A1 | United States of America | A1 | |
| AU2015213396B2 | Australia | B2 | |
| AU2018201519A1 | Australia | A1 | |
| US9943508B2 | United States of America | B2 | |
| US2018296540A1 | United States of America | A1 | |
| CA2773592C | Canada | C | |
| JP6427522B2 | Japan | B2 | |
| US2019091214A1 | United States of America | A1 | |
| EP2478099B1 | European Patent Office (EPO) | B1 | |
| ES2746480T3 | Spain | T3 | |
| US2020121656A1 | United States of America | A1 | |
| AU2020203741A1 | Australia | A1 | |
| AU2022246374A1 | Australia | A1 | |
| EP4088717A1 | European Patent Office (EPO) | A1 |
Numbers
- Publication
- 347901
- Publication, DOCDB
- 347901
- Publication, EPODOC
- MX347901
- Application
- 2014004035
- Application, DOCDB
- 2014004035
- Application, EPODOC
- MX20140004035
Titles2
- Spanish
- USO Y COMPOSICION PARA TRATAR LA DEMENCIA.
- English
- USE AND COMPOSITION TO TREAT DEMENTIA.
Classification
- CPC, 12
- A61K31/46
- A61K31/27
- A61K31/445
- A61K31/4747
- A61K45/06
- A61K31/325
- A61K31/473
- A61K31/55
- A61P25/00
- A61P25/02
- A61P25/28
- A61P43/00
- IPC, 9
- A61K31 27
- A61K31 46
- A61K31 55
- A61K31 325
- A61K31 445
- A61K31 473
- A61K31 4747
- A61K45 06
- A61P25 28