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Acamprosate formulations, methods of using the same, and combinations comprising the same

a technology of acamprosate and a compound, applied in the field of acamprosate formulations, methods of using the same, and combinations comprising the same, can solve the problems of low bioavailability of bcs class iii compounds, low bindability of compounds, and reduced response of voltage-operated calcium channels to high levels of glutamate stimulation, etc., to achieve greater relief of anxiety and agitation, lower risk of tardive dyskinesia, and benefi

Inactive Publication Date: 2013-06-06
SYNCHRONEURON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes improved formulations of acamprosate, a drug used to treat neuropsychiatric disorders, that can provide better efficacy and tolerability with lower dosages and reduced side effects. The improved formulations can be used in fixed dose combinations with other medications, such as neuroleptic drugs, to treat various disorders with greater effectiveness and reduced risk of side effects. The fixed dose combinations can offer greater relief of symptoms and improve cognition in patients with pre-existing tardive dyskinesia. Overall, the patent text provides technical effects for improved treatment of neuropsychiatric disorders using acamprosate formulations.

Problems solved by technology

In particular, it reduces the response of the voltage-operated calcium channel to high levels of stimulation by glutamate.
The bioavailability of BCS Class III compounds tends to be low because the absorption of such compounds occurs either via diffusion—which is slow and inefficient because of the low permeability—or via specialized transporters in the membranes of intestinal mucosal cells—which may not exist, may poorly bind the compound, or may be easily saturated, implying zero-order kinetics.
Furthermore, even in embodiments where the GR system does not offer greater bioavailability—i.e., a larger area under the time-concentration curve (AUC) for a given oral dose—it can increase the efficacy of an oral dose by increasing the target site residence time at which the concentration exceeds a minimal threshold for efficacy.
In contrast with second-generation neuroleptics of equal therapeutic efficacy, these combinations can carry a lesser risk of significant metabolic disturbances including weight gain, glucose intolerance, and increased risk of atherosclerotic cardiovascular disease.
However, those drugs are no less efficacious in treating psychosis than the second-generation drugs (with the sole exception of clozapine), which usually are more expensive, and which have serious metabolic effects with potentially life-threatening consequences.

Method used

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  • Acamprosate formulations, methods of using the same, and combinations comprising the same
  • Acamprosate formulations, methods of using the same, and combinations comprising the same
  • Acamprosate formulations, methods of using the same, and combinations comprising the same

Examples

Experimental program
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Effect test

example 1

[0127]Case 1: A 56-year old woman had long-standing tardive dyskinesia induced by treatment of schizoaffective disorder with a variety of neuroleptics and mood stabilizers. Her TD was characterized by side to side movements of the jaw, grimacing movements, rocking of the trunk, and continual involuntary kicking, leg-crossing, and twisting movements of her legs and feet. At the time she presented for treatment of her TD she was treated for her mental illness with lamotrigine and quetiapine, a second-generation neuroleptic. She was started on acamprosate 666 mg three times a day, with partial relief of symptoms. When acamprosate was increased to 999 mg three times a day she had complete relief of her TD. After two months free of symptoms of TD she switched from quetiapine to perphenazine, a first-generation neuroleptic; her TD symptoms did not return.

[0128]After additional weeks free of TD symptoms she discontinued the acamprosate. Her TD symptoms returned, as did feelings of anxiety ...

example 2

[0132]CASE 2: A 34-year old man had been treated with acamprosate for several years for TD due to exposure to several neuroleptics for schizoaffective disorder. He was currently treated with lamotrigine and quetiapine for his mental illness, and was taking acamprosate 1032 mg+999 mg+1032 mg on a three times daily basis. This dose of acamprosate completely relieved his involuntary movements of TD—the latter including involuntary movements of the cheeks and mouth, rocking movements of the trunk, and twisting movements of the both upper and lower extremities. 999 mg three times a day did not give full relief from his involuntary movements. To test the therapeutic threshold hypothesis the patient was asked to try 1032 mg of acamprosate once a day in the morning. On this dose he was free of movements in the morning and early afternoon but movements returned in the evening. When he added a second dose of 1032 mg in the late afternoon—8 to 10 hours after his first dose—he obtained complete...

example 3

[0135]A pharmacokinetic study was conducted in four dogs. Dogs were given immediate-release (IR) acamprosate capsules orally. On one day they were given a single capsule containing 325 mg of acamprosate. On another day one week later the dogs were given 325 mg of acamprosate divided into smaller doses administered every 30 minutes, as shown in Table 1 below.

[0136]This mode of delivering acamprosate mimics the delivery of acamprosate into the stomach by a controlled-release GR system. FIGS. 1-4 are time-concentration curves for each of the dogs that compare IR acamprosate with simulated GR controlled-release acamprosate.

[0137]Table 2 shows pharmacokinetic parameters of the two delivery versions of acamprosate in each of the four dogs and displays ratios of interest between the two versions for several parameters of interest. In the table the residence time above two arbitrarily selected thresholds—2000 ng / mL and 3000 ng / mL was calculated by measuring the graphs; an asterisk next to t...

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Abstract

Embodiments disclosed herein generally relate to acamprosate formulations, methods of use of the formulations, to methods of using the formulations in combination with at least one other medication, and to combination products and compositions comprising the formulations and at least one other medication, such as neuroleptic (antipsychotic) and / or antidepressant drugs.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims is a continuation of PCT Application No. PCT / US2012 / 067507, filed on Dec. 2, 2012, entitled “ACAMPROSATE FORMULATIONS, METHODS OF USING THE SAME, AND COMBINATIONS COMPRISING THE SAME,” which claimed the benefit of priority under 35 U.S.C. §119(e) of U.S. Provisional Application No. 61 / 566,550 filed on Dec. 2, 2011, and U.S. Provisional Application No. 61 / 649,137, filed on May 18, 2012, both entitled “METHODS OF USING ACAMPROSATE FORMULATIONS AND COMPOSITIONS COMBINING ACAMPROSATE FORMULATIONS WITH NEUROLEPTIC DRUGS,” each of which is hereby incorporated herein by reference in its entirety and is to be considered a part of this specification.BACKGROUND[0002]1. Field[0003]Embodiments disclosed herein generally relate to methods of use of improved formulations of acamprosate (calcium N-acetylhomotaurinate) and to compositions and use of compositions comprising medications, such as neuroleptic (antipsychotic) and / or an...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K31/185A61K45/06
CPCA61K31/185A61K45/06A61K31/385A61K9/2027A61K31/164A61K9/2054A61K9/0065A61K2300/00A61K31/135A61K31/137A61K31/138A61K31/15A61K31/165A61K31/166A61K31/343A61K31/381A61K31/4515A61K31/4525A61K31/454A61K31/496A61K31/519A61K31/5377A61K31/5415A61K31/55A61K31/551A61K31/553A61K31/554A61K47/22A61K47/32A61K47/38
Inventor FOGEL, BARRY S.KERNS, WILLIAM D.FONG, KEI-LAI
Owner SYNCHRONEURON
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