Objective：To observe the protective effects of safflor Injection（SI） and extract of Ginkgo biloba（EGB） on lung ischemia-reperfusion injury（LIRI） and investigate its mechanism.Methods：In vivo rabbit model of LI...Objective：To observe the protective effects of safflor Injection（SI） and extract of Ginkgo biloba（EGB） on lung ischemia-reperfusion injury（LIRI） and investigate its mechanism.Methods：In vivo rabbit model of LIRI was reconstructed.Forty rabbits were randomly and equally divided into four groups：sham-operation group（sham group）,ischemia-reperfusion group（model group）,ischemia-reperfusion plus SI group（safflor group） and ischemia-reperfusion plus EGB injection group（EGB group）.Malondialdehyde（MDA） content,superoxide dismutase（SOD） and xanthine oxidase（XO） activity in serum were measured.The wet/dry weight ratio（W/D） of the lung tissue and activity of myeloperoxidase（MPO） were also tested.Ultrastructure change of the lung tissue was observed by the electron microscope.The expression of intercellular adhesion molecule-1（ICAM-1） was measured by immunohistochemistry（IHC）.Results：In the model group,MDA and XO increased and SOD decreased in serum compared with the sham group（P〈0.01）.The values of W/D,MPO and ICAM-1 of the model group were higher than those of the sham group（P〈0.01）,but those of the safflor group and EGB group were significantly lower than those of the model group（P〈0.01）.The IHC demonstrated that ICAM-1 expression in lung tissue of the model group was significantly higher than those of the safflor group（P〈0.01）.Compared with safflor group,in the EGB group MDA,XO,MPO decreased,SOD and ICAM-1expression increased（P〈0.05）,but the change of W/D was not statistically significant（P〉0.05）.Conclusions：SI and EGB may attenuate LIRI through antioxidation,inhibition of neutrophil aggregation and down-regulation of ICAM-1expression.But EGB had more effect on the antioxidation,while SI did better on regulating ICAM-1 expression.展开更多
文摘Objective：To observe the protective effects of safflor Injection（SI） and extract of Ginkgo biloba（EGB） on lung ischemia-reperfusion injury（LIRI） and investigate its mechanism.Methods：In vivo rabbit model of LIRI was reconstructed.Forty rabbits were randomly and equally divided into four groups：sham-operation group（sham group）,ischemia-reperfusion group（model group）,ischemia-reperfusion plus SI group（safflor group） and ischemia-reperfusion plus EGB injection group（EGB group）.Malondialdehyde（MDA） content,superoxide dismutase（SOD） and xanthine oxidase（XO） activity in serum were measured.The wet/dry weight ratio（W/D） of the lung tissue and activity of myeloperoxidase（MPO） were also tested.Ultrastructure change of the lung tissue was observed by the electron microscope.The expression of intercellular adhesion molecule-1（ICAM-1） was measured by immunohistochemistry（IHC）.Results：In the model group,MDA and XO increased and SOD decreased in serum compared with the sham group（P〈0.01）.The values of W/D,MPO and ICAM-1 of the model group were higher than those of the sham group（P〈0.01）,but those of the safflor group and EGB group were significantly lower than those of the model group（P〈0.01）.The IHC demonstrated that ICAM-1 expression in lung tissue of the model group was significantly higher than those of the safflor group（P〈0.01）.Compared with safflor group,in the EGB group MDA,XO,MPO decreased,SOD and ICAM-1expression increased（P〈0.05）,but the change of W/D was not statistically significant（P〉0.05）.Conclusions：SI and EGB may attenuate LIRI through antioxidation,inhibition of neutrophil aggregation and down-regulation of ICAM-1expression.But EGB had more effect on the antioxidation,while SI did better on regulating ICAM-1 expression.
