title: Resveratrol attenuates oxidative damage and ameliorates cognitive impairment in the brain of senescence-accelerated mice.
abstract: OBJECTIVE
  Resveratrol (Res) which is a polyphenolic phytoalexin, has various biological properties. In the present study, we investigated whether Res extracted from Polygonum cuspidatum can reduce oxidative damage and cognitive impairment in senescence-accelerated mouse (SAM).
  
  
  METHODS
  Senescence-accelerated mice were administered with Res (25, 50, 100mg·kg(-1)·d(-1)) for 8weeks. The activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and the content of malondialdehyde (MDA) in mice brain were determined. The gene expression of SOD in mice brain was investigated by real time reverse transcriptase-polymerase chain reaction (RT-PCR).
  
  
  RESULTS
  The results showed that resveratrol significantly improved learning and memory ability in Morris water maze test and neuromuscular coordination and sensorimotor capacity in tightrope test. Meanwhile, Res increased the activities of antioxidant enzymes with a reduction in lipid peroxidation. And real time RT-PCR analysis also indicated that the change of SOD mRNA was the same as the modification of SOD activity in mice brain. Furthermore, Res could prevent cerebral mitochondrial DNA deletions which might be one of the causes resulting in learning and memory impairment.
  
  
  CONCLUSIONS
  These results suggest that the pharmacological action of Res may offer a novel therapeutic strategy for the treatment of age-related conditions.
authors.affiliation: Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science & Technology, Tianjin 300457, People's Republic of China.
authors.forename: Gui-Shan
authors.initials: GS
authors.lastname: Liu
authors.forename: Ze-Sheng
authors.initials: ZS
authors.lastname: Zhang
authors.forename: Bo
authors.initials: B
authors.lastname: Yang
authors.forename: Wei
authors.initials: W
authors.lastname: He
mesh_terms: D000375:Aging / Q000187:drug effects*; D000818:Animals; D000975:Antioxidants / Q000302:isolation & purification / Q000494:pharmacology* / Q000627:therapeutic use; D001921:Brain / Q000187:drug effects* / Q000378:metabolism; D003072:Cognition Disorders / Q000517:prevention & control*; D004272:DNA, Mitochondrial / Q000235:genetics; D045468:Fallopia japonica / Q000737:chemistry; D017353:Gene Deletion; D005979:Glutathione Peroxidase / Q000378:metabolism; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism; D018782:Maze Learning / Q000187:drug effects; D008568:Memory / Q000187:drug effects; D051379:Mice; D018384:Oxidative Stress / Q000187:drug effects*; D012333:RNA, Messenger / Q000235:genetics; D000077185:Resveratrol; D013267:Stilbenes / Q000302:isolation & purification / Q000494:pharmacology* / Q000627:therapeutic use; D013482:Superoxide Dismutase / Q000235:genetics / Q000378:metabolism
chemical_list: D000975:Antioxidants; D004272:DNA, Mitochondrial; D012333:RNA, Messenger; D013267:Stilbenes; D008315:Malondialdehyde; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D000077185:Resveratrol