Title : Effect of gamma-aminobutyric acid on intracellular pH in the crayfish stretch-receptor neurone.

Pub. Date : 1991 Mar

PMID : 1711091






5 Functional Relationships(s)
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1 The effect of gamma-aminobutyric acid (GABA) on intracellular pH (pHi) was examined in the crayfish stretch-receptor neurone using H(+)-selective microelectrodes and a two-microelectrode voltage clamp. gamma-Aminobutyric Acid glucose-6-phosphate isomerase Homo sapiens
2 The effect of gamma-aminobutyric acid (GABA) on intracellular pH (pHi) was examined in the crayfish stretch-receptor neurone using H(+)-selective microelectrodes and a two-microelectrode voltage clamp. gamma-Aminobutyric Acid glucose-6-phosphate isomerase Homo sapiens
3 In the presence of 30 mmol l-1 HCO3- (pH 7.4), application of GABA (0.5 mmol l-1) produced a mean fall in pHi of 0.26 units. gamma-Aminobutyric Acid glucose-6-phosphate isomerase Homo sapiens
4 Acetazolamide (0.1 mmol l-1) decreased the rate of fall of pHi caused by a step increase in CO2 partial pressure as well as by GABA, which indicates that the neurone contains carbonic anhydrase. gamma-Aminobutyric Acid glucose-6-phosphate isomerase Homo sapiens
5 All these observations support the conclusion that the GABA-induced fall in pHi is due to a net efflux of HCO3- through the inhibitory anion channels. gamma-Aminobutyric Acid glucose-6-phosphate isomerase Homo sapiens