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The Effect of Chronic Treatment of Deprenyl in Animal Models of Parkinson's Disease Hiroyuki Nakashima 1 , Shoji Asari 1 , Akira Nishimoto 1 , Menek Goldstein 2 1Department of Neurological Surgery, Okayama University Medical School 2Neurochemistry Research Unit, New York University Medical Center Keyword: deprenyl , Parkinson's disease , MPTP pp.357-361
Published Date 1991/4/1
DOI https://doi.org/10.11477/mf.1406900185
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Recent studies have demonstrated that deprenyl can delay the progression of parkinsonian syn-drome. Deprenyl selectively and irreversibly inhibits the activity of monoamine oxidase-type B (MAO-B), and subsequent enzyme activity requires de novo synthesis of MAO-B. In this study we investigated (1) ; the effects of deprenyl on striatal dopamine (DA) levels in MPTP-lesioned and un-damaged mice and (2) ; the effect of deprenyl on L -DOPA induced rotational movements in a hemipar-kinsonian model monkey. In MPTP-lesioned mice, deprenyl increased the striatal DA levels by 123%, 78% immediately and one week after termination of deprenyl treatment respectively, while by 31%, 24% in MPTP-undamaged mice, respectively. Four weeks after termination of deprenyl the increase in striatal DA was not significant. It shows that de-prenyl is effective in elevation of striatal DA at least one week after termination of treatment, and the degree of increase of striatal DA following deprenyl treatment is greater in MPTP-treated mice than in undamaged mice. Deprenyl seemed to be effective longer in a hemiparkinsonian monkey than in rodents. The result suggests that less frequent admisistration of deprenyl may be effective in controlling side effects of L-DOPA without reduc-ing therapeutic efficacy.


Copyright © 1991, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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