PMID- 8635431 OWN - NLM STAT- MEDLINE DCOM- 19960709 LR - 20190813 IS - 0013-9580 (Print) IS - 0013-9580 (Linking) VI - 37 IP - 2 DP - 1996 Feb TI - Change in neurotrophins and their receptor mRNAs in the rat forebrain after status epilepticus induced by pilocarpine. PG - 198-207 AB - We studied the effects of status epilepticus (SE) induced by lithium chloride/pilocarpine treatment on gene expression of neurotrophins of the nerve growth factor (NGF) family and of their high-affinity receptors of the tyrosine protein kinase (trk) family in the forebrain. Using in situ hybridization (ISH), we demonstrated an early (3 h after treatment) increase in brain-derived neurotrophic factor (BDNF) and trkB mRNA expression in the dentate gyrus, amygdala, and piriform cortex, as well as widespread increases in the cerebral cortex. NGF mRNA, but not the mRNA of its receptor trkA, was increased in the dentate gyrus. In contrast, 12 h after treatment, neurotrophin-3 (NT-3) decreased, and its receptor trkC mRNA increased. There was no change in NT-4 mRNA levels. All changes were blocked by pretreatment with scopolamine, a muscarinic antagonist. The noncompetitive N-methyl-D-aspartate (NMDA) antagonist ketamine blocked NGF, BDNF, and trkB mRNA increases in the hippocampus and cerebral cortex, but not in the amygdala and piriform cortex. In contrast, ketamine did not affect NT-3 and trkC changes. These results provide a complete description of changes in mRNA levels of neurotrophins and their receptors in the forebrain after SE and supply additional data supporting the view that neurotrophin gene expression is related to abnormal neuronal activity. FAU - Mudo, G AU - Mudo G AD - Institute of Human Physiology, University of Catania, Italy. FAU - Jiang, X H AU - Jiang XH FAU - Timmusk, T AU - Timmusk T FAU - Bindoni, M AU - Bindoni M FAU - Belluardo, N AU - Belluardo N LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Epilepsia JT - Epilepsia JID - 2983306R RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Nerve Growth Factors) RN - 0 (Nerve Tissue Proteins) RN - 0 (Neurotrophin 3) RN - 0 (RNA, Messenger) RN - 01MI4Q9DI3 (Pilocarpine) RN - 690G0D6V8H (Ketamine) RN - DL48G20X8X (Scopolamine) RN - EC 2.7.10.1 (Protein-Tyrosine Kinases) RN - G4962QA067 (Lithium Chloride) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor MH - Cerebral Cortex/chemistry/drug effects MH - Gene Expression MH - Hippocampus/chemistry/drug effects MH - In Situ Hybridization MH - Ketamine/pharmacology MH - Lithium Chloride MH - Male MH - Nerve Growth Factors/*analysis/genetics MH - Nerve Tissue Proteins/*analysis/genetics MH - Neurotrophin 3 MH - *Pilocarpine MH - Prosencephalon/*chemistry/metabolism MH - Protein-Tyrosine Kinases/genetics/metabolism MH - RNA, Messenger/*analysis MH - Rats MH - Rats, Wistar MH - Scopolamine/pharmacology MH - Status Epilepticus/*chemically induced/genetics/metabolism MH - Tissue Distribution EDAT- 1996/02/01 00:00 MHDA- 1996/02/01 00:01 CRDT- 1996/02/01 00:00 PHST- 1996/02/01 00:00 [pubmed] PHST- 1996/02/01 00:01 [medline] PHST- 1996/02/01 00:00 [entrez] AID - 10.1111/j.1528-1157.1996.tb00012.x [doi] PST - ppublish SO - Epilepsia. 1996 Feb;37(2):198-207. doi: 10.1111/j.1528-1157.1996.tb00012.x.