Dextran sulfate attenuates ischemia-reperfusion injury after lung transplantation in rats
10.3760/cma.j.issn.0254-1785.2014.10.011
- VernacularTitle:硫酸葡聚糖减轻大鼠移植肺缺血再灌注损伤的作用及其机理
- Author:
Lijie ZHOU
;
Xianlei WANG
;
Jinfeng TAN
;
Zhifang LU
;
Chunyu SONG
;
Xiaoguang CUI
- Publication Type:Journal Article
- Keywords:
Rats;
Lung transplantation;
Reperfusion injury;
Dextran sulfate;
Lcomplement
- From:
Chinese Journal of Organ Transplantation
2014;35(10):621-625
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of dextran sulfate on lung ischemia-reperfusion injury after lung transplantation in rats.Method A total of 32 male Wistar rats were subjected to unilateral left lung orthotopic transplantation.They were randomly divided two groups (n =16 each):DXS group [DXS (10 mg/kg) was given prior to the reperfusion],and the control group (the same volume of normal saline was given).After animals were sacrificed,the lung graft was harvested 2 h after reperfusion.Oxygenation indexes,wet/dry ratio (W/D),myeloperoxidase (MPO) activity,malondialdehyde (MDA) and endothelin 1 (ET-1) in the transplanted lung,and tumor necrosis factor a (TNF-α) and interleukin 8 (IL-8) in serum were measured.The lung injury scores were evaluated and complement deposition was observed.Result After 2-h reperfusion,compared to the control group,oxygenation indexes were improved significantly in DXS group (P＜0.05),but there were no significant differences in W/D between two groups.In DXS group,the activity of MPO was significantly reduced,and the contents of MDA and ET-1 in the lung tissue were significantly reduced as compared with the control group.DXS reduced the level of TNF-α and IL-8 markedly in serum (P ＜0.05).There was no significant difference in lung injury score between two groups (4.53 ± 0.46 vs.5.28 ±0.49,P＞0.05).Compared to the control group,DXS reduced the deposition of C3c (0.8 ±0.2vs1.5±0.3) andC6 (1.2±0.4vs.2.4±0.5) (P＜0.05).Conclusion Administration of DXS attenuated ischemia-reperfusion injury after lung transplantation by inhibiting complement deposition,and improved the oxygenation of the transplanted lung.This protection was associated with inhibition of inflammation and oxidation and endothelial cytoprotection.
