PMID- 25588463 OWN - NLM STAT- MEDLINE DCOM- 20151120 LR - 20220408 IS - 1878-3627 (Electronic) IS - 0922-6028 (Linking) VI - 33 IP - 2 DP - 2015 TI - Quercetin ameliorates hypobaric hypoxia-induced memory impairment through mitochondrial and neuron function adaptation via the PGC-1alpha pathway. PG - 143-57 LID - 10.3233/RNN-140446 [doi] AB - PURPOSE: Acute hypobaric hypoxia (HH) causes persistent cognitive impairment, affecting memory function specifically. Mitochondrial dysfunction and synaptic morphological change were the prominent pathological features of HH exposure on brain. Quercetin, a flavonoid found in fruits, vegetables, leaves and grains, is reported to prevent ischemia induced by neuronal injury. This study investigated the efficacy of quercetin to ameliorate HH-induced memory deficit. METHODS: Rats were exposed to HH equivalent to 5000 m for 7 days in a decompression chamber and received quercetin daily (50, 75 or 100 mg/kg.bw) via gavage during the period of exposure. Cognitive performance was assessed by the Morris water maze test. In vitro, the effect of quercetin was tested in hippocampus tissue. RESULTS: Quercetin, especially at 100 mg/kg.bw, significantly reduced HH-induced memory decline. Meanwhile, HH-induced hippocampus mitochondrial and synaptic lesions were ameliorated by quercetin. Furthermore, quercetin regulated the expression of sirtuin 1(Sirt1), PGC-1alpha, and the proteins related with mitochondrial biogenesis and dynamics. Moreover, quercetin increased expression of fibronectin type III domain-containing protein 5 (FNDC5) and brain-derived neurotrophic factor (BDNF), showing the PGC-1alpha/FNDC5/BNDF pathways might be involved in neuronal adaptation. CONCLUSIONS: The results suggest quercetin has prophylactic potential for amelioration of HH-induced memory impairment, which is associated with the mitochondrial and neuronal adaptation in hippocampus. FAU - Liu, Peng AU - Liu P AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Zou, Dan AU - Zou D AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Yi, Long AU - Yi L AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Chen, Mingliang AU - Chen M AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Gao, Yanxiang AU - Gao Y AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Zhou, Rui AU - Zhou R AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Zhang, Qianyong AU - Zhang Q AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Zhou, Yong AU - Zhou Y AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Zhu, Jundong AU - Zhu J AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Chen, Ka AU - Chen K AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. FAU - Mi, Mantian AU - Mi M AD - Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing, PR China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Restor Neurol Neurosci JT - Restorative neurology and neuroscience JID - 9005499 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (FNDC5 protein, rat) RN - 0 (Fibronectins) RN - 0 (Nootropic Agents) RN - 0 (Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha) RN - 0 (Ppargc1a protein, rat) RN - 0 (Transcription Factors) RN - 9IKM0I5T1E (Quercetin) RN - EC 3.5.1.- (Sirt1 protein, rat) RN - EC 3.5.1.- (Sirtuin 1) SB - IM MH - Adaptation, Physiological/drug effects/physiology MH - Animals MH - Brain-Derived Neurotrophic Factor/metabolism MH - Disease Models, Animal MH - Dose-Response Relationship, Drug MH - Fibronectins/metabolism MH - Hippocampus/drug effects/pathology/physiopathology MH - Hypoxia/*drug therapy/pathology/physiopathology MH - Male MH - Maze Learning/drug effects/physiology MH - Memory Disorders/*drug therapy/pathology/physiopathology MH - Mitochondria/*drug effects/physiology MH - Neurons/*drug effects/pathology/physiology MH - Nootropic Agents/*pharmacology MH - Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha MH - Pressure/adverse effects MH - Quercetin/*pharmacology MH - Random Allocation MH - Rats, Sprague-Dawley MH - Sirtuin 1/metabolism MH - Synapses/drug effects/pathology/physiology MH - Transcription Factors/metabolism OTO - NOTNLM OT - Hypobaric hypoxia OT - PGC-1alpha OT - memory impairment OT - mitochondria OT - neuroprotection OT - quercetin EDAT- 2015/01/16 06:00 MHDA- 2015/12/15 06:00 CRDT- 2015/01/16 06:00 PHST- 2015/01/16 06:00 [entrez] PHST- 2015/01/16 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] AID - V015X47710VRH8H1 [pii] AID - 10.3233/RNN-140446 [doi] PST - ppublish SO - Restor Neurol Neurosci. 2015;33(2):143-57. doi: 10.3233/RNN-140446.