Abstract
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-1 expression 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-1 expression. But EGB had more effect on the antioxidation, while SI did better on regulating ICAM-1 expression.
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Tian, Xx., Wang, Bl., Cao, Yz. et al. Comparison of protective effects of safflor injection and extract of Ginkgo biloba on lung ischemia/reperfusion injury in rabbits. Chin. J. Integr. Med. 21, 229–233 (2015). https://doi.org/10.1007/s11655-013-1513-8
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DOI: https://doi.org/10.1007/s11655-013-1513-8