PMID- 10882847 OWN - NLM STAT- MEDLINE DCOM- 20000906 LR - 20220408 IS - 0893-133X (Print) IS - 0893-133X (Linking) VI - 23 IP - 2 DP - 2000 Aug TI - Long-term repetitive transcranial magnetic stimulation increases the expression of brain-derived neurotrophic factor and cholecystokinin mRNA, but not neuropeptide tyrosine mRNA in specific areas of rat brain. PG - 205-15 AB - Repetitive transcranial magnetic stimulation (rTMS) is increasingly used as a therapeutic tool in various neurological and psychiatric disorders, and we recently found that it has a neuroprotective effect both in vitro and in vivo. However, the neurochemical mechanisms underlying the therapeutic effects are still unknown. We investigated the effects of long-term rTMS on the expression of brain-derived neurotrophic factor (BDNF), cholecystokinin (CCK), and neuropeptide tyrosine (NPY) mRNA in rat brain. In situ hybridization revealed a significant increase in BDNF mRNA in the hippocampal areas CA3 and CA3c, the granule cell layer, as well as in the parietal and the piriform cortex after rTMS. BDNF-like immunoreactivity was markedly increased in the same areas. A significant increase in CCK mRNA was observed in all brain regions examined. NPY mRNA expression, in contrast, was not altered. The present results suggest that BDNF may contribute to the neuroprotective effects of rTMS. Furthermore, the rTMS-induced changes in BDNF and CCK expression are similar to those reported after antidepressant drug treatment and electroconvulsive seizures, suggesting that a common molecular mechanism may underlie different antidepressant treatment strategies. FAU - Muller, M B AU - Muller MB AD - Max Planck Institute of Psychiatry, Munich, Germany. FAU - Toschi, N AU - Toschi N FAU - Kresse, A E AU - Kresse AE FAU - Post, A AU - Post A FAU - Keck, M E AU - Keck ME LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Neuropsychopharmacology JT - Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology JID - 8904907 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Neuropeptide Y) RN - 0 (RNA, Messenger) RN - 9011-97-6 (Cholecystokinin) SB - IM MH - Animals MH - Brain/*metabolism MH - Brain-Derived Neurotrophic Factor/biosynthesis/genetics MH - Cerebral Cortex/metabolism MH - Cholecystokinin/biosynthesis/*genetics MH - Dentate Gyrus/metabolism MH - Electric Stimulation/instrumentation MH - Hippocampus/metabolism MH - Male MH - Neuropeptide Y/biosynthesis/*genetics MH - Olfactory Pathways/metabolism MH - Parietal Lobe/metabolism MH - RNA, Messenger/*biosynthesis MH - Rats MH - Rats, Wistar MH - Time MH - Transcranial Magnetic Stimulation/*therapeutic use EDAT- 2000/07/07 11:00 MHDA- 2000/09/09 11:01 CRDT- 2000/07/07 11:00 PHST- 2000/07/07 11:00 [pubmed] PHST- 2000/09/09 11:01 [medline] PHST- 2000/07/07 11:00 [entrez] AID - S0893-133X(00)00099-3 [pii] AID - 10.1016/S0893-133X(00)00099-3 [doi] PST - ppublish SO - Neuropsychopharmacology. 2000 Aug;23(2):205-15. doi: 10.1016/S0893-133X(00)00099-3.