THE EFFECTS OF PIRACETAM ON LIPOFUSCIN OF THE RAT CEREBELLAR AND HIPPOCAMPAL-NEURONS AFTER LONG-TERM ALCOHOL TREATMENT AND WITHDRAWAL - A QUANTITATIVE STUDY

• Tipo: Artigo em Revista Científica Internacional
• Data: 1991

Autores

PAULABARBOSA, MM (Autor) Outra; BRANDAO, F (Autor) Outra; PINHO, MC (Autor) Outra; ANDRADE, JP (Autor) FMUP; MADEIRA, MD (Autor) FMUP; CADETELEITE, A (Autor) Outra

Revista

Título: Alcoholism: Clinical and Experimental Research

Vol. 15

Páginas: 834-838

ISSN: 0145-6008

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 19 Citações

Scopus - 25 Citações

Classificação Científica

FOS: Ciências médicas e da saúde > Ciências da saúde

Outras Informações

ID Authenticus: P-001-QDG

DOI: 10.1111/j.1530-0277.1991.tb00610.x

Abstract (EN): There is a growing body of evidence indicating that chronic alcohol consumption induces morphological changes in the central nervous system (CNS) similar to those observed during brain senescence, including an increased formation of lipofuscin. In addition, it was also found that alcohol withdrawal does not reverse these changes. On the contrary, most of the alterations observed during alcohol consumption worsen as happens with the increased lipofuscin formation. Thus, using our model of alcohol feeding and withdrawal, we decided to examine the effects of different drugs said to offer neuronal protection during CNS degenerative processes. The action of piracetam, a cyclic derivate of GABA and commonly used as a nootropic agent, was tested by studying the lipofuscin accumulation on the cerebellar Purkinje and hippocampal CA3 pyramidal cells in alcohol-treated and withdrawn rats. Piracetam was found to markedly decrease the formation of neuronal lipofuscin. Whatever the functional implications of this pigment, its reduction in piracetam-treated animals might be related either to a protective effect on the intraneuronal membranous system or to an antioxidant property of this molecule.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5