PMID- 12960768 OWN - NLM STAT- MEDLINE DCOM- 20031120 LR - 20190718 IS - 0959-4965 (Print) IS - 0959-4965 (Linking) VI - 14 IP - 11 DP - 2003 Aug 6 TI - Sustained intracellular Ca2+ elevation induced by a brief BDNF application in rat visual cortex neurons. PG - 1481-3 AB - A 1-2 min application of brain-derived neurotrophic factor (BDNF; 20 ng/ml) induced sustained elevation of intracellular Ca2+ lasting > 90 min, using the fura-2 imaging of intracellular Ca2+ mobilization, in visual cortical pyramidal neurons isolated from rats. BDNF increased intracellular Ca2+ through the PLC-gamma phosphorylation after the TrkB receptor tyrosine kinase activation. Either K252a or U73122 suppressed intracellular Ca2+ in the absence of BDNF. We suggest that sustained activation of Trk B receptor tyrosine kinase and PLC-gamma occurs after a brief BDNF application and contributes to the short-term maintenance (< 30 min) of the sustained intracellular Ca2+ elevation. FAU - Mizoguchi, Yoshito AU - Mizoguchi Y AD - Cellular and Systems Physiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan. FAU - Nabekura, Junichi AU - Nabekura J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Neuroreport JT - Neuroreport JID - 9100935 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Carbazoles) RN - 0 (Enzyme Inhibitors) RN - 0 (Estrenes) RN - 0 (Fluorescent Dyes) RN - 0 (Indole Alkaloids) RN - 0 (Pyrrolidinones) RN - 112648-68-7 (1-(6-((3-methoxyestra-1,3,5(10)-trien-17-yl)amino)hexyl)-1H-pyrrole-2,5-dione) RN - 97161-97-2 (staurosporine aglycone) RN - EC 2.7.10.1 (Receptor, trkB) RN - EC 3.1.4.- (Type C Phospholipases) RN - EC 3.1.4.3 (Phospholipase C gamma) RN - SY7Q814VUP (Calcium) RN - TSN3DL106G (Fura-2) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*pharmacology MH - Calcium/*metabolism MH - Carbazoles/pharmacology MH - Enzyme Inhibitors/pharmacology MH - Estrenes/pharmacology MH - Fluorescent Dyes MH - Fura-2 MH - In Vitro Techniques MH - Indole Alkaloids MH - Phospholipase C gamma MH - Phosphorylation MH - Pyramidal Cells/drug effects/*metabolism MH - Pyrrolidinones/pharmacology MH - Rats MH - Rats, Wistar MH - Receptor, trkB/antagonists & inhibitors/drug effects/metabolism MH - Stimulation, Chemical MH - Type C Phospholipases/antagonists & inhibitors/metabolism MH - Visual Cortex/cytology/drug effects/*metabolism EDAT- 2003/09/10 05:00 MHDA- 2003/12/03 05:00 CRDT- 2003/09/10 05:00 PHST- 2003/09/10 05:00 [pubmed] PHST- 2003/12/03 05:00 [medline] PHST- 2003/09/10 05:00 [entrez] AID - 10.1097/00001756-200308060-00015 [doi] PST - ppublish SO - Neuroreport. 2003 Aug 6;14(11):1481-3. doi: 10.1097/00001756-200308060-00015.