Résumé
@#Objective To study the anti-fatigue effect of Cynomorium songaricum flavone(CSF)on old rats.Methods50 old male Wistar rats were randomly divided into the control group(no swimming,no drugs),single swimming group(swimming,given saline by gavage),and three swimming plus CSF groups(swimming,given CSF 20 g/kg weight,10 g/kg weight and 5 g/kg weight respectively),total five groups with 10 animals in each group.Animals swam with free swimming in endless cycles water 30 minutes once every day for 10 days.The level of monoamine oxidase(MAO) and glutathione peroxidase(GSH-px) in blood of animals were examined by MAO kit,GSH-px kit and ultraviolet spectrophotometer at 11th day.ResultsCompared with single swimming group,the body weights of swimming plus CSF groups increased significantly by 12.9%,80.6% and 200% respectively(P<0.01);swimming times before sinking increased by 19.4%,29% and 48.4%;sinking times of each rat(time/10 min) decreased by 17.8%,43.2% and 72.9%;total swimming times increased by 2.8%,7% and 29.6% respectively(P<0.01);MAO decreased by 60%,69.8% and 80.5%,GSH-px increased by 465.3%,563.8% and 635% respectively(P<0.01).ConclusionCSF shows anti-oxidative and anti-fatigue properties and can be given as prophylactic/therapeutic supplements for increasing antioxidant enzyme activities and preventing lipid peroxidation during strenuous exercise.
Résumé
@#Objective To study the anti-fatigue effect of Cynomorium songaricum flavone(CSF)on old rats.Methods50 old male Wistar rats were randomly divided into the control group(no swimming,no drugs),single swimming group(swimming,given saline by gavage),and three swimming plus CSF groups(swimming,given CSF 20 g/kg weight,10 g/kg weight and 5 g/kg weight respectively),total five groups with 10 animals in each group.Animals swam with free swimming in endless cycles water 30 minutes once every day for 10 days.The level of monoamine oxidase(MAO) and glutathione peroxidase(GSH-px) in blood of animals were examined by MAO kit,GSH-px kit and ultraviolet spectrophotometer at 11th day.ResultsCompared with single swimming group,the body weights of swimming plus CSF groups increased significantly by 12.9%,80.6% and 200% respectively(P<0.01);swimming times before sinking increased by 19.4%,29% and 48.4%;sinking times of each rat(time/10 min) decreased by 17.8%,43.2% and 72.9%;total swimming times increased by 2.8%,7% and 29.6% respectively(P<0.01);MAO decreased by 60%,69.8% and 80.5%,GSH-px increased by 465.3%,563.8% and 635% respectively(P<0.01).ConclusionCSF shows anti-oxidative and anti-fatigue properties and can be given as prophylactic/therapeutic supplements for increasing antioxidant enzyme activities and preventing lipid peroxidation during strenuous exercise.
Résumé
Objective The proliferation and differentiation of neural stem cells in the subventricular zone(SVZ) and subgranular zone(SGZ) have been observed in normal old rats or treated by middle cerebral artery occluded(MCAO) and sham operation respectively. Methods Old rats were used to make models of middle cerebral artery occluded(MCAO).By BrdU pulse labeling and immunohistochemical single staining,the change of the number of BrdU positive cells was observed in SVZ and SGZ of normal rats or cerebral ischemia rats after MCAO 3d,7d,14d,21d,28d and sham operation respectively.By BrdU accumulating label and immunohistochemical double staining,BrdU/NeuN and BrdU/GFAP positive cells were determined in SVZ and SGZ of aged rats after MCAO 14d. Results BrdU positive cells were found in bilateral SVZ and SGZ of all groups above mentioned.Compared with normal and sham groups,BrdU positive cells of SVZ and SGZ in cerebral ischemia rats were strikingly increased.BrdU positive cells reached the peaks in SVZ at 7d and in SGZ at 14d after MCAO.At 14d after MCAO,BrdU/NeuN(0.98%) or BrdU/GFAP(12.56%) double labled cells were observed in SVZ,but no double labled cell was observed in SGZ.Conclusion The focal cerebral ischemia markedly stimulated proliferation of neural stem cells in SVZ and SGZ in old rats,and some proliferative cells in SVZ can differentiate into neurons or glial cells.