PMID- 1498667 OWN - NLM STAT- MEDLINE DCOM- 19920915 LR - 20190613 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 581 IP - 1 DP - 1992 May 22 TI - An analogue of Joro spider toxin selectively suppresses hippocampal epileptic discharges induced by quisqualate. PG - 161-4 AB - The anticonvulsant effect of 1-naphthylacetyl spermine, an analogue of Joro spider toxin (JSTX), was studied against seizures induced by quisqualate (QUIS), a non-NMDA agonist, as assessed electrophysiologically and behaviorally in freely moving rats. Electrodes were implanted into right dorsal hippocampus and an injection cannula for drugs into right ventricle. The pretreatment with JSTX analogue significantly inhibited both of QUIS-induced hippocampal discharges (80-11%) and generalized tonic clonic seizures (100-33%) in a dose-dependent manner, whereas JSTX had no effect on seizures induced by quinolinate, a NMDA agonist. The paper provides the first direct evidence that the JSTX analogue exerts a potent and selective suppression of hippocampal epileptic discharges mediated by non-N-methyl-D-aspartate (non-NMDA) receptors. FAU - Kanai, H AU - Kanai H AD - Department of Psychiatry, Shiga University of Medical Science, Otsu, Japan. FAU - Ishida, N AU - Ishida N FAU - Nakajima, T AU - Nakajima T FAU - Kato, N AU - Kato N LA - eng PT - Comparative Study PT - Journal Article PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 122306-11-0 (1-naphthylacetylspermine) RN - 2FZ7Y3VOQX (Spermine) RN - 8OC22C1B99 (Quisqualic Acid) SB - IM MH - Animals MH - Electroencephalography/drug effects MH - Epilepsy/chemically induced/*prevention & control MH - Hippocampus/*drug effects MH - Male MH - Quisqualic Acid/*antagonists & inhibitors MH - Rats MH - Rats, Inbred Strains MH - Spermine/*analogs & derivatives/pharmacology EDAT- 1992/05/22 00:00 MHDA- 1992/05/22 00:01 CRDT- 1992/05/22 00:00 PHST- 1992/05/22 00:00 [pubmed] PHST- 1992/05/22 00:01 [medline] PHST- 1992/05/22 00:00 [entrez] AID - 0006-8993(92)90357-F [pii] AID - 10.1016/0006-8993(92)90357-f [doi] PST - ppublish SO - Brain Res. 1992 May 22;581(1):161-4. doi: 10.1016/0006-8993(92)90357-f.