PMID- 25843933 OWN - NLM STAT- MEDLINE DCOM- 20160209 LR - 20150513 IS - 1872-6240 (Electronic) IS - 0006-8993 (Linking) VI - 1610 DP - 2015 Jun 12 TI - Calorie restriction attenuates cerebral ischemic injury via increasing SIRT1 synthesis in the rat. PG - 61-8 LID - S0006-8993(15)00278-4 [pii] LID - 10.1016/j.brainres.2015.03.043 [doi] AB - Caloric restriction (CR) has been shown to have several health benefits and provides protection against type 2 diabetes, neurodegenerative and cerebral vascular diseases. It reduces the brain infarct size and promotes neurological functional recovery after cerebral ischemia. Sirtuin 1 (SIRT1) plays an important role in the biological effects induced by CR. This study investigated the role of SIRT1 in ischemic tolerance in the brain induced by CR. Sprague drawly rats were divided into two groups based on food intake. Ad libitum (AL) group was fed with normal diet while the CR group received 60% calories compared to AL. All animals were subjected to a middle cerebral artery occlusion for 90 min. Results showed the neurological function score of CR group was higher and the brain infarct volume was markedly reduced in CR group compared to AL group at 24h after reperfusion (p < 0.05). CR increased the synthesis of SIRT1 significantly (p < 0.05), and ameliorated the down regulation of SIRT1 expression at 6 and 12h after middle cerebral artery occlusion (p < 0.05, p < 0 .01, respectively). Knockdown of SIRT1 by siRNA in vivo reversed the neuroprotective effect of CR. From this study, we deduce that CR induces brain ischemic tolerance on rats via increasing the synthesis of SIRT1. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Ran, Mingzi AU - Ran M AD - Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an 710032, Shaanxi, China. Electronic address: Ranmingzi1989@foxmail.com. FAU - Li, Zhaoju AU - Li Z AD - Department of Anesthesiology, General Hospital of Guangzhou Military Command of PLA, 111 Liuhua Road, Guangzhou 510010, Guangdong, China. Electronic address: hellenanna@163.com. FAU - Yang, Lujia AU - Yang L AD - Department of Anesthesiology, Chinese PLA General Hospital, 28 Fuxing Road, Beijing 100853, China. Electronic address: Lukehome@me.com. FAU - Tong, Li AU - Tong L AD - Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an 710032, Shaanxi, China. Electronic address: tongli@fmmu.edu.cn. FAU - Zhang, Lina AU - Zhang L AD - Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an 710032, Shaanxi, China. Electronic address: 15891755136@163.com. FAU - Dong, Hailong AU - Dong H AD - Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an 710032, Shaanxi, China. Electronic address: hldong6@hotmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150403 PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Blood Glucose) RN - 0 (RNA, Small Interfering) RN - EC 3.5.1.- (Sirt1 protein, rat) RN - EC 3.5.1.- (Sirtuin 1) SB - IM MH - Animals MH - Blood Glucose MH - Blotting, Western MH - Body Weight MH - Brain/metabolism/pathology MH - Brain Ischemia/*diet therapy/*metabolism/pathology MH - *Caloric Restriction MH - Disease Models, Animal MH - Fluorescent Antibody Technique MH - Gene Knockdown Techniques MH - Infarction, Middle Cerebral Artery MH - Male MH - RNA, Small Interfering MH - Rats, Sprague-Dawley MH - Real-Time Polymerase Chain Reaction MH - Reperfusion Injury/diet therapy/metabolism/pathology MH - Severity of Illness Index MH - Sirtuin 1/genetics/*metabolism OTO - NOTNLM OT - Brain ischemic tolerance OT - Calorie restriction OT - Neuroprotection OT - SIRT1 EDAT- 2015/04/07 06:00 MHDA- 2016/02/10 06:00 CRDT- 2015/04/07 06:00 PHST- 2014/06/29 00:00 [received] PHST- 2014/11/10 00:00 [revised] PHST- 2015/03/23 00:00 [accepted] PHST- 2015/04/07 06:00 [entrez] PHST- 2015/04/07 06:00 [pubmed] PHST- 2016/02/10 06:00 [medline] AID - S0006-8993(15)00278-4 [pii] AID - 10.1016/j.brainres.2015.03.043 [doi] PST - ppublish SO - Brain Res. 2015 Jun 12;1610:61-8. doi: 10.1016/j.brainres.2015.03.043. Epub 2015 Apr 3.