Pivovarov AS, Egido-Villareal W. NO synthase and guanylate cyclase inhibitors block modulation of the plasticity of common snail cholinoreceptors by 15-hydroxy-eicosatetraenoic acid.
NEUROSCIENCE AND BEHAVIORAL PHYSIOLOGY 1996;
26:428-34. [PMID:
9000214 DOI:
10.1007/bf02359403]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The probable role of two second messengers, nitrogen oxide (NO) and cyclic guanosine monophosphate (cGMP) in the short- and long-latency effects of the acyclic eicosanoid 15(S)-hydroxy-5Z,8Z,11Z,13E-eicosatetraenoic acid (15-HETE) on the plasticity of somatic cholinoreceptors of identified RPa3 and LPa3 neurons of Helix lucorum, was investigated using the two-electrode voltage clamp technique on the membrane. It was demonstrated that N omega-methyl-L-arginine (an inhibitor of NO synthase), LY-83,583 [sic], and the dye methylene blue (inhibitors of soluble guanylate cyclase), when applied extracellularly, disrupt the short- and long-latency modulatory influences of 15-HETE on the depression of the inward current induced by acetylcholine during its rhythmic application to the soma. The participation of NO and cGMP in the modulatory effects of 15-HETE on the plasticity of cholinoreceptors is hypothesized.
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