PMID- 10899924 OWN - NLM STAT- MEDLINE DCOM- 20000817 LR - 20190630 IS - 0022-3042 (Print) IS - 0022-3042 (Linking) VI - 75 IP - 2 DP - 2000 Aug TI - Brain-derived neurotrophic factor accelerates nitric oxide donor-induced apoptosis of cultured cortical neurons. PG - 494-502 AB - Brain-derived neurotrophic factor (BDNF) is known to have important functions in neuronal survival, differentiation, and plasticity. In addition to its role as a survival-promoting factor, BDNF reportedly can enhance neuronal cell death in some cases, for example, the death caused by excitotoxicity or glucose deprivation. The cellular mechanism of the death-enhancing effect of BDNF remains unknown, in contrast to that of its survival-promoting effect. In this work, we found that BDNF markedly accelerated the nitric oxide (NO) donor-induced death of cultured embryonic cortical neurons. BDNF increased the number of cells with nuclear condensation and DNA fragmentation 24 h after treatment with the NO donor, but it did not change the number of those cells 36 h after the treatment. The BDNF-accelerated death of cortical neurons was inhibited by the addition of actinomycin D or cycloheximide. These results suggest that BDNF can accelerate apoptotic cell death elicited by NO donor. TrkB-IgG and K252a blocked the BDNF-induced acceleration of the death, indicating that the death-accelerating effect by BDNF is mediated by TrkB. In addition, the BDNF-accelerated apoptosis was inhibited by the addition of SB202190 and SB203580, specific inhibitors of p38 mitogen-activated protein kinase (MAPK), and U0126, a specific inhibitor of MAPK/ERK kinase 1, indicating that the activation of both p38 MAPK and ERK is involved in the signaling cascade of the BDNF-accelerated, NO donor-induced apoptosis. FAU - Ishikawa, Y AU - Ishikawa Y AD - Division of Protein Biosynthesis, Institute for Protein Research, Osaka University, Osaka, Japan. FAU - Ikeuchi, T AU - Ikeuchi T FAU - Hatanaka, H AU - Hatanaka H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Neurochem JT - Journal of neurochemistry JID - 2985190R RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Butadienes) RN - 0 (Carbazoles) RN - 0 (Enzyme Inhibitors) RN - 0 (Imidazoles) RN - 0 (Immunoglobulin G) RN - 0 (Indole Alkaloids) RN - 0 (Nitric Oxide Donors) RN - 0 (Nitriles) RN - 0 (Pyridines) RN - 0 (U 0126) RN - 169D1260KM (Nitroprusside) RN - 1CC1JFE158 (Dactinomycin) RN - 97161-97-2 (staurosporine aglycone) RN - 98600C0908 (Cycloheximide) RN - EC 2.7.10.1 (Receptor, trkB) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - OU13V1EYWQ (SB 203580) RN - PVX798P8GI (4-(4-fluorophenyl)-2-(4-hydroxyphenyl)-5-(4-pyridyl)imidazole) SB - IM MH - Animals MH - Apoptosis/*drug effects MH - Brain-Derived Neurotrophic Factor/*pharmacology MH - Butadienes/pharmacology MH - Carbazoles/pharmacology MH - Cell Nucleus/drug effects MH - Cell Survival/drug effects MH - Cells, Cultured MH - Cerebral Cortex/*cytology MH - Cycloheximide/pharmacology MH - DNA Fragmentation/drug effects MH - Dactinomycin/pharmacology MH - Drug Synergism MH - Embryo, Mammalian MH - Enzyme Inhibitors/pharmacology MH - Female MH - Imidazoles/pharmacology MH - Immunoglobulin G/pharmacology MH - Indole Alkaloids MH - Kinetics MH - Male MH - Mitogen-Activated Protein Kinase 3 MH - Mitogen-Activated Protein Kinases/antagonists & inhibitors MH - Neurons/cytology/*drug effects/physiology MH - Nitric Oxide Donors/*pharmacology MH - Nitriles/pharmacology MH - Nitroprusside/*pharmacology MH - Pyridines/pharmacology MH - Rats MH - Rats, Wistar MH - Receptor, trkB/antagonists & inhibitors MH - Signal Transduction/drug effects/physiology MH - p38 Mitogen-Activated Protein Kinases EDAT- 2000/07/19 11:00 MHDA- 2000/08/19 11:00 CRDT- 2000/07/19 11:00 PHST- 2000/07/19 11:00 [pubmed] PHST- 2000/08/19 11:00 [medline] PHST- 2000/07/19 11:00 [entrez] AID - 10.1046/j.1471-4159.2000.0750494.x [doi] PST - ppublish SO - J Neurochem. 2000 Aug;75(2):494-502. doi: 10.1046/j.1471-4159.2000.0750494.x.