PMID- 12362050 OWN - NLM STAT- MEDLINE DCOM- 20030304 LR - 20131121 IS - 0289-0003 (Print) IS - 0289-0003 (Linking) VI - 19 IP - 9 DP - 2002 Sep TI - Distribution of NO-induced cGMP-like immunoreactive neurones in the abdominal nervous system of the crayfish, Procambarus clarkii. PG - 969-79 AB - Nitric oxide (NO) acts as a signalling molecule by activating soluble guanylate cyclase and causing accumulation of the second messenger cyclic guanosine 3',5'-monophosphate (cGMP) in target cells. In order to detect the presence of NO-cGMP signalling pathway in the crayfish abdominal nervous system, accumulation of NO-induced cGMP was investigated by anti-cGMP immunochemistry. Some preparations were incubated in a high-K(+) saline containing an inhibitor of cGMP-degrading phosphodiesterase, 3-isobutyl-1-methyxanthine (IBMX), to activate NO generating neurones, which could release NO in the ganglion, and then immunohistochemistry using an anti-cGMP antibody was performed. The other preparations were incubated in NO donor, sodium nitroprusside (SNP) saline containing IBMX before anti-cGMP immunohistochemistry was performed. The distribution of cGMP-like immunoreactive neurones in high-K(+) treated preparations was similar to that of cGMP-like immunoreactive neurones in NO donor treated preparations. About 70-80 cell bodies and many neuronal branches in the neuropilar area of the ganglion were stained, although no neurones showed immunoreactivity unless preparations were activated by either high-K(+) or the NO donor. Some of them were identical neurones, and they were intersegmental ascending interneurones and motor neurones. Sensory afferents that innervates hind gut showed strong cGMP-like immunoreactivity, although no mechanosensory afferents showed any immunoreactivity. These results strongly suggest the presence of an NO-cGMP signalling pathway that regulates neuronal events in the abdominal nervous system of the crayfish. FAU - Aonuma, Hitoshi AU - Aonuma H AD - Laboratory of Neuro-Cybernetics, Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan. aon@ncp8.es.hokudai.ac.jp LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - Zoolog Sci JT - Zoological science JID - 8702287 RN - 31C4KY9ESH (Nitric Oxide) RN - H2D2X058MU (Cyclic GMP) RN - RWP5GA015D (Potassium) RN - TBT296U68M (1-Methyl-3-isobutylxanthine) SB - IM MH - 1-Methyl-3-isobutylxanthine/pharmacology MH - Abdomen/*innervation MH - Animals MH - *Astacoidea/cytology/drug effects/immunology MH - Cyclic GMP/immunology/*metabolism MH - Female MH - Ganglia/cytology/drug effects/metabolism MH - Immunohistochemistry MH - Male MH - Nervous System/*cytology/drug effects/*metabolism MH - Neurons/drug effects/immunology/*metabolism MH - Nitric Oxide/*metabolism MH - Potassium/pharmacology MH - Signal Transduction/drug effects EDAT- 2002/10/04 04:00 MHDA- 2003/03/05 04:00 CRDT- 2002/10/04 04:00 PHST- 2002/10/04 04:00 [pubmed] PHST- 2003/03/05 04:00 [medline] PHST- 2002/10/04 04:00 [entrez] AID - 10.2108/zsj.19.969 [doi] PST - ppublish SO - Zoolog Sci. 2002 Sep;19(9):969-79. doi: 10.2108/zsj.19.969.