模擬400m氦氧飽和潛水對大鼠抗氧化能力的影響
[Abstract]:[objective] to observe the effect of simulated 400 m helium oxygen saturation diving on anti-oxidation ability of rats. [methods] the rats were saturated for 24 hours in a pressure chamber of 4.1 MPa helium-oxygen environment. The rats were exposed to atmospheric pressure and 4.1 MPa normoxic high-helium environment as control. The activity of superoxide dismutase (SOD),) glutathione peroxidase (GSH-px) and the contents of glutathione (GSH), malondialdehyde (MDA) and 8-hydroxydeoxyguanosine (8-OhdG) in rat liver, brain and lung were measured. [results] the activities of SOD and GSH-Px in liver, brain and lung were decreased after exposure to helium-oxygen saturation for 4.1 MPa in rats (P0.05). The contents of GSH in brain and lung were decreased (P0.05). There was no significant change in all indexes after exposure to normoxic high helium for 4.1 MPa (P0.05). There was no significant difference in the content of MDA and 8-OhdG in each group (P0.05). [conclusion] simulated 400 m helium-oxygen saturation diving for 24 h resulted in oxidative stress reaction and decreased antioxidant capacity in rats, which may be related to the high partial pressure oxygen in the environment.
【作者單位】: 海軍醫(yī)學研究所;同濟大學體育部;
【基金】:全軍后勤科研項目(編號:AHJ08J003,AHJ11J004,CWS11J186)
【分類號】:R84
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