Acetylcholinesterase release from crude mitochondrial fractions and superfused synaptosomes of rat hypothalamus / Liberatión de acetilcolinesterarasa de la fracción mitocondrial cruda y de sinaptosomas superfundidos de hipotalamo de rata
Acta cient. venez
;
44(3): 151-6, 1993. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-185506
ABSTRACT
Crude mitochondrial fractions of rat hypothalamus, incubated in oxygenated Krebs solution (37ºC), released acetylcholinesterase (AChE) (increased of enzyme activity) into the medium, upon depolarization by 50 mM K+;this effect was absent in Ca²+ free medium. Superfused-synaptosomes obtained from subfractionated crude mitochondrial fractions of rat hypothalamus also released AChE, in a calcium-dependent fashion, when dependent fashion, when depolarized by 50 mM K+ or 50 µM veratridine. The veratridine-releasing effect was antagonized by 2 mM tetrodotoxin. Lactic dehydrogenase activity did not change in the medium with the introduction of depolarizing substances
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Índice:
LILACS (Américas)
Assunto principal:
Acetilcolinesterase
/
Ratos
/
Sinaptossomos
/
Hipotálamo
Limite:
Animais
Idioma:
Inglês
Revista:
Acta cient. venez
Assunto da revista:
Ciência
Ano de publicação:
1993
Tipo de documento:
Artigo
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