PMID- 31421130 OWN - NLM STAT- MEDLINE DCOM- 20201027 LR - 20211204 IS - 1872-6240 (Electronic) IS - 0006-8993 (Linking) VI - 1723 DP - 2019 Nov 15 TI - Neuroprotection by nicotinamide mononucleotide adenylyltransferase 1 with involvement of autophagy in an aged rat model of transient cerebral ischemia and reperfusion. PG - 146391 LID - S0006-8993(19)30445-7 [pii] LID - 10.1016/j.brainres.2019.146391 [doi] AB - Recent researches suggest that autophagic degradation declines with age, and this leads to an accumulation of damage that contributes to age-related cellular dysfunction. Nicotinamide mononucleotide adenylyltransferase 1 (NMNAT1) shows therapeutic potential for cerebral ischemia in young-adult animals. This study investigated the role of NMNAT1 in focal cerebral ischemia in aged rats with a focus on neuronal autophagy. Focal cerebral ischemia was induced in aged rats by middle cerebral artery occlusion (MCAO). NMNAT1 levels in the peri-infarct penumbra increased at 12 and 24 h after ischemia in aged rats. Knockdown of NMNAT1 significantly increased infarct volume, whereas overexpression of NMNAT1 reduced ischemia-induced cerebral injuries in aged rats with acute ischemic stroke. Meanwhile, lentiviral overexpression of NMNAT1 increased autophagy, reduced the phosphorylation of mammalian target of rapamycin (mTOR), and enhanced the sirtuin 1 (SIRT1) protein level. In cultured cortical neurons, SIRT1 regulated the mTOR-mediated autophagy upon oxygen-glucose deprivation (OGD) stress and the effect of NMNAT1 on autophagy was blocked in cultured SIRT1-knockout neurons. Furthermore, autophagy inhibitor 3-methyladenine (3-MA) partly abolished the neuroprotection induced by NMNAT1 overexpression. The results suggest NMNAT1 protects against acute ischemic stroke in aged rats by inducing autophagy via regulating the SIRT1/mTOR pathway. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Wang, Peng AU - Wang P AD - Liaoning Key Laboratory of Neurodegenerative Diseases and Department of Neurobiology, Jinzhou Medical University, Jinzhou, Liaoning, China. FAU - Lu, Yijun AU - Lu Y AD - Department of Anesthesiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China. FAU - Han, Donghe AU - Han D AD - Liaoning Key Laboratory of Neurodegenerative Diseases and Department of Neurobiology, Jinzhou Medical University, Jinzhou, Liaoning, China. FAU - Wang, Pan AU - Wang P AD - Liaoning Key Laboratory of Neurodegenerative Diseases and Department of Neurobiology, Jinzhou Medical University, Jinzhou, Liaoning, China. FAU - Ren, Lili AU - Ren L AD - Liaoning Key Laboratory of Neurodegenerative Diseases and Department of Neurobiology, Jinzhou Medical University, Jinzhou, Liaoning, China. FAU - Bi, Jing AU - Bi J AD - Liaoning Key Laboratory of Neurodegenerative Diseases and Department of Neurobiology, Jinzhou Medical University, Jinzhou, Liaoning, China. FAU - Liang, Jia AU - Liang J AD - Institute of Life Science, Jinzhou Medical University, Jinzhou, Liaoning, China. Electronic address: liangjia8123@126.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190814 PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Neuroprotective Agents) RN - 5142-23-4 (3-methyladenine) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 2.7.7.1 (NMNAT1 protein, rat) RN - EC 2.7.7.1 (Nicotinamide-Nucleotide Adenylyltransferase) RN - EC 3.5.1.- (Sirtuin 1) RN - IY9XDZ35W2 (Glucose) RN - JAC85A2161 (Adenine) RN - S88TT14065 (Oxygen) SB - IM MH - Adenine/analogs & derivatives/metabolism MH - Animals MH - Autophagy/*drug effects MH - Brain Ischemia/*drug therapy MH - Glucose/metabolism MH - Infarction, Middle Cerebral Artery/drug therapy MH - Ischemic Attack, Transient/metabolism MH - Male MH - Neurons/metabolism MH - Neuroprotection/drug effects MH - Neuroprotective Agents/pharmacology MH - Nicotinamide-Nucleotide Adenylyltransferase/genetics/*metabolism/pharmacology MH - Oxygen/metabolism MH - Rats MH - Reperfusion MH - Reperfusion Injury/metabolism MH - Signal Transduction/drug effects MH - Sirtuin 1/metabolism MH - Stroke/drug therapy/metabolism MH - TOR Serine-Threonine Kinases/metabolism OTO - NOTNLM OT - Autophagy OT - Ischemic stroke OT - NMNAT1 OT - Neuroprotection EDAT- 2019/08/20 06:00 MHDA- 2020/10/28 06:00 CRDT- 2019/08/18 06:00 PHST- 2019/05/16 00:00 [received] PHST- 2019/07/20 00:00 [revised] PHST- 2019/08/13 00:00 [accepted] PHST- 2019/08/20 06:00 [pubmed] PHST- 2020/10/28 06:00 [medline] PHST- 2019/08/18 06:00 [entrez] AID - S0006-8993(19)30445-7 [pii] AID - 10.1016/j.brainres.2019.146391 [doi] PST - ppublish SO - Brain Res. 2019 Nov 15;1723:146391. doi: 10.1016/j.brainres.2019.146391. Epub 2019 Aug 14.