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. 1988 Mar;93(3):679–683. doi: 10.1111/j.1476-5381.1988.tb10326.x

Effects of diuretics on GABA-gated chloride current in frog isolated sensory neurones.

N Inomata 1, T Ishihara 1, N Akaike 1
PMCID: PMC1853826  PMID: 2453244

Abstract

1. Effects of three diuretics (furosemide, amiloride and alpha-human atrial natriuretic polypeptide (alpha-hANP] on GABA-activated chloride current (ICl) were investigated in frog isolated sensory neurones, following suppression of Na+, K+ and Ca2+ currents, by use of a 'concentration-clamp' technique. 2. Furosemide inhibited the GABA-activated ICl in a non-competitive manner and facilitated the inactivation phase, while amiloride inhibited the GABA response in a competitive manner, both inhibitions being concentration-dependent. Alpha-hANP had no effects on the GABA-induced ICl. 3. The reversal potential of GABA-activated ICl (EGABA) was not shifted in the presence of amiloride or furosemide. 4. The results suggest that amiloride may act at the GABA binding site while furosemide may act on the GABA-gated chloride channel.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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