PMID- 2245800 OWN - NLM STAT- MEDLINE DCOM- 19910109 LR - 20190813 IS - 0013-9580 (Print) IS - 0013-9580 (Linking) VI - 31 IP - 6 DP - 1990 Nov-Dec TI - Neonatal monosodium glutamate abolishes corticotropin-releasing factor-induced epileptogenic activity in rats. PG - 708-12 AB - Intracerebroventricular (i.c.v.) injection of rat corticotropin-releasing factor (rCRF) at doses of 5-20 micrograms in rats induces epileptogenic activity characterized by pacemaker-like spikes localized in the hippocampal leads. Such an effect was still present in rats neonatally treated with saline but was absent in those neonatally treated with monosodium glutamate (MSG), a treatment that caused marked changes in the concentration of several brain neurotransmitters and neuropeptides in hypothalamic nuclei where CRF is highly concentrated and is believed to induce endocrinologic and behavioral effects. The present results suggest the rCRF-induced spiking activity is mediated by activation of neuronal pathways sensitive to MSG neurotoxic effect. FAU - Marrosu, F AU - Marrosu F AD - Institute of Neurology, University of Cagliari, Italy. FAU - Argiolas, A AU - Argiolas A FAU - Carcangiu, P AU - Carcangiu P FAU - Giagheddu, M AU - Giagheddu M FAU - Fratta, W AU - Fratta W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Epilepsia JT - Epilepsia JID - 2983306R RN - 9015-71-8 (Corticotropin-Releasing Hormone) RN - W81N5U6R6U (Sodium Glutamate) SB - IM MH - Animals MH - Animals, Newborn/*growth & development MH - Body Weight MH - *Corticotropin-Releasing Hormone/administration & dosage MH - Dose-Response Relationship, Drug MH - Electroencephalography MH - Epilepsy/*chemically induced/metabolism/prevention & control MH - Female MH - Frontal Lobe/drug effects/metabolism MH - Hypothalamus/drug effects/metabolism MH - Injections, Intraventricular MH - Male MH - Rats MH - Rats, Inbred Strains MH - Sodium Glutamate/administration & dosage/*pharmacology EDAT- 1990/11/01 00:00 MHDA- 1990/11/01 00:01 CRDT- 1990/11/01 00:00 PHST- 1990/11/01 00:00 [pubmed] PHST- 1990/11/01 00:01 [medline] PHST- 1990/11/01 00:00 [entrez] AID - 10.1111/j.1528-1157.1990.tb05510.x [doi] PST - ppublish SO - Epilepsia. 1990 Nov-Dec;31(6):708-12. doi: 10.1111/j.1528-1157.1990.tb05510.x.