PMID- 18493705 OWN - NLM STAT- MEDLINE DCOM- 20090106 LR - 20211020 IS - 0300-9564 (Print) IS - 0300-9564 (Linking) VI - 115 IP - 11 DP - 2008 Nov TI - Role of melatonin receptors in the effects of melatonin on BDNF and neuroprotection in mouse cerebellar neurons. PG - 1495-9 LID - 10.1007/s00702-008-0066-z [doi] AB - Although melatonin affects developing neurons and is neuroprotective, a role of melatonin receptors termed MT1 and MT2 in these actions is unclear. We investigated the effects of melatonin on the levels of the brain derived neurotrophic factor (BDNF) in the developing cerebellum and cerebellar granule cells (CGC) of wild-type (WT), MT1- and MT2-knockout mice. A model of low-potassium CGC toxicity was used to evaluate neuroprotection. A 14-day-old pups and CGC cultures were treated with melatonin; 0.01 mg/kg intraperitoneally and 1 nM in vitro, respectively. Treatment of WT pups and CGC with melatonin did not alter BDNF levels. The absence of MT2 but not MT1 receptors enabled melatonin to increase cerebellar and CGC BDNF content. Nanomolar melatonin was neuroprotective in MT2-knockout but not WT CGC. We propose that CGC from MT2-knockout mice could serve as a model for studying the influence of melatonin on human CGC, which express MT1 but not MT2 receptors. FAU - Imbesi, Marta AU - Imbesi M AD - Department of Psychiatry, The Psychiatric Institute, University of Illinois at Chicago, 1601 West Taylor Street, MC912, Chicago, IL 60612, USA. FAU - Uz, Tolga AU - Uz T FAU - Manev, Hari AU - Manev H LA - eng GR - R01MH61572/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20080521 PL - Austria TA - J Neural Transm (Vienna) JT - Journal of neural transmission (Vienna, Austria : 1996) JID - 9702341 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Neuroprotective Agents) RN - 0 (RNA, Messenger) RN - 0 (Receptor, Melatonin, MT1) RN - 0 (Receptor, Melatonin, MT2) RN - 0 (Receptors, Melatonin) RN - 0 (Tetrazolium Salts) RN - 0 (Thiazoles) RN - EUY85H477I (thiazolyl blue) RN - JL5DK93RCL (Melatonin) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*pharmacology MH - Cells, Cultured MH - Cerebellum/*cytology/drug effects MH - Melatonin/*pharmacology MH - Mice MH - Mice, Inbred C3H MH - Mice, Knockout MH - Neurons/*drug effects MH - Neuroprotective Agents/*pharmacology MH - RNA, Messenger/biosynthesis/genetics MH - Receptor, Melatonin, MT1/drug effects/genetics MH - Receptor, Melatonin, MT2/drug effects/genetics MH - Receptors, Melatonin/*drug effects MH - Tetrazolium Salts MH - Thiazoles EDAT- 2008/05/22 09:00 MHDA- 2009/01/07 09:00 CRDT- 2008/05/22 09:00 PHST- 2008/03/06 00:00 [received] PHST- 2008/05/05 00:00 [accepted] PHST- 2008/05/22 09:00 [pubmed] PHST- 2009/01/07 09:00 [medline] PHST- 2008/05/22 09:00 [entrez] AID - 10.1007/s00702-008-0066-z [doi] PST - ppublish SO - J Neural Transm (Vienna). 2008 Nov;115(11):1495-9. doi: 10.1007/s00702-008-0066-z. Epub 2008 May 21.