PMID- 24397751 OWN - NLM STAT- MEDLINE DCOM- 20140908 LR - 20220331 IS - 1755-5949 (Electronic) IS - 1755-5930 (Print) IS - 1755-5930 (Linking) VI - 20 IP - 2 DP - 2014 Feb TI - Endothelial nitric oxide synthase protects neurons against ischemic injury through regulation of brain-derived neurotrophic factor expression. PG - 154-64 LID - 10.1111/cns.12182 [doi] AB - AIMS: Several lines of evidence demonstrated that endothelial nitric oxide synthase (eNOS) confers protective effects during cerebral ischemia. In this study, we explored the underlying cellular and molecular mechanisms of neuroprotection by eNOS. METHODS: A series of in vivo and in vitro ischemic models were employed to study the role of eNOS in maintaining neuronal survival and to identify the downstream factors. RESULTS: The current data showed that pretreatment with a specific eNOS inhibitor, L-N5-(1-iminoethyl) ornithine (L-NIO), aggravated the neuronal loss in the rat cerebral ischemic model, accompanied by reduction in brain-derived neurotrophic factor (BDNF) level, which was consistent with the findings in an oxygen-glucose deprivation model (OGD) with two neuronal cells: primary rat cortical neurons and human neuroblastoma SH-SY5Y cells. Furthermore, the extensive neuronal loss induced by L-NIO was totally abolished by exogenous BDNF in both in vitro and in vivo models. On the other hand, eNOS overexpression through an adenoviral vector exerted a prominent protective effect on the neuronal cells subject to OGD, and the protective effect was totally abrogated by a neutralizing anti-BDNF antibody. CONCLUSION: Collectively, our results indicate that the neuroprotection of neuron-derived eNOS against the cerebral ischemia was mediated through the regulation of BDNF secretion. In conclusion, our discovery provides a novel explanation for the neuroprotective effect of eNOS under pathological ischemic conditions such as stroke. CI - (c) 2014 John Wiley & Sons Ltd. FAU - Li, Shi-Ting AU - Li ST AD - Department of Neurosurgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China. FAU - Pan, Jing AU - Pan J FAU - Hua, Xu-Ming AU - Hua XM FAU - Liu, Hong AU - Liu H FAU - Shen, Sa AU - Shen S FAU - Liu, Jia-Fu AU - Liu JF FAU - Li, Bin AU - Li B FAU - Tao, Bang-Bao AU - Tao BB FAU - Ge, Xiao-Li AU - Ge XL FAU - Wang, Xu-Hui AU - Wang XH FAU - Shi, Juan-Hong AU - Shi JH FAU - Wang, Xiao-Qiang AU - Wang XQ LA - eng PT - Journal Article DEP - 20140108 PL - England TA - CNS Neurosci Ther JT - CNS neuroscience & therapeutics JID - 101473265 RN - 0 (Antibodies) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Enzyme Inhibitors) RN - 36889-13-1 (N(G)-iminoethylornithine) RN - E524N2IXA3 (Ornithine) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type III) RN - EC 3.4.22.- (Caspase 3) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Animals MH - Antibodies/pharmacology/therapeutic use MH - Brain/drug effects/*pathology MH - Brain-Derived Neurotrophic Factor/immunology/*metabolism MH - Caspase 3/metabolism MH - Cells, Cultured MH - Cerebral Cortex MH - Disease Models, Animal MH - Enzyme Inhibitors/pharmacology MH - Gene Expression Regulation/drug effects/*physiology MH - Glucose/deficiency MH - Humans MH - Hypoxia/pathology/prevention & control MH - Ischemic Attack, Transient/*pathology/*prevention & control MH - Male MH - Neurons/drug effects/*physiology MH - Nitric Oxide Synthase Type III/immunology/*metabolism MH - Ornithine/analogs & derivatives/pharmacology MH - Rats MH - Rats, Sprague-Dawley PMC - PMC6493204 OTO - NOTNLM OT - Brain-derived neurotrophic factor OT - Endothelial nitric oxide synthase OT - Ischemia/reperfusion OT - Nitric oxide COIS- The authors declare no conflict of interest. EDAT- 2014/01/09 06:00 MHDA- 2014/09/10 06:00 PMCR- 2014/01/08 CRDT- 2014/01/09 06:00 PHST- 2013/03/22 00:00 [received] PHST- 2013/09/05 00:00 [revised] PHST- 2013/09/06 00:00 [accepted] PHST- 2014/01/09 06:00 [entrez] PHST- 2014/01/09 06:00 [pubmed] PHST- 2014/09/10 06:00 [medline] PHST- 2014/01/08 00:00 [pmc-release] AID - CNS12182 [pii] AID - 10.1111/cns.12182 [doi] PST - ppublish SO - CNS Neurosci Ther. 2014 Feb;20(2):154-64. doi: 10.1111/cns.12182. Epub 2014 Jan 8.