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  • Title: Clinical evaluation of gamma-vinyl-gamma-aminobutyric acid for control of epilepsy in dogs.
    Author: Speciale J, Dayrell-Hart B, Steinberg SA.
    Journal: J Am Vet Med Assoc; 1991 Mar 15; 198(6):995-1000. PubMed ID: 2032927.
    Abstract:
    Gamma-vinyl-gamma-aminobutyric acid is a novel antiepileptic drug that exerts its effects by increasing the concentration of gamma-aminobutyric acid in the brain. The mechanism of action involves irreversible inhibition of the metabolic pathway of gamma-aminobutyric acid. The drug was administered to 14 dogs in conjunction with other anticonvulsants, in an attempt to control refractory epilepsy. Four of these dogs had clinically relevant evidence of decreased seizure frequency. In 4 dogs, response to the drug was no better than response to phenobarbital alone. In 2 dogs, seizure control improved, but gamma-vinyl-gamma-aminobutyric acid was withdrawn because of development of hemolytic anemia. For various reasons, the therapeutic effect in the remaining 4 dogs could not be evaluated. This study of only 14 dogs illustrates some of the problems that confound our ability to judge the efficacy of anticonvulsant treatment.
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