| Literature DB >> 7520537 |
Abstract
The effects of nitric oxide (NO) synthase inhibitors on the electrically evoked release of [3H]acetylcholine were studied in guinea-pig myenteric plexus preparations preincubated with [3H]choline. NG-monomethyl-L-arginine (EC50 5.3 mumol l-1) and NG-nitro-L-arginine (EC50 1.3 mumol l-1) concentration-dependently increased the evoked release of [3H]acetylcholine without affecting the basal outflow. The facilitatory effect of NG-mono-methyl-L-arginine was prevented by L-arginine but not by D-arginine. The results suggest that endogenous NO inhibits the depolarisation-evoked release of acetylcholine.Entities:
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Year: 1994 PMID: 7520537 DOI: 10.1007/bf00169145
Source DB: PubMed Journal: Naunyn Schmiedebergs Arch Pharmacol ISSN: 0028-1298 Impact factor: 3.000