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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2009, Vol. 14 ›› Issue (11): 1242-1246.

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Effect of SB203580 on cell apoptosis during lung ischemic/reperfusion injury in rats

ZHENG Yan-rong1, SHI Lu2, HONG Jia-lin3, JIA Xu-guang2, WANG Wan-tie2   

  1. 1Centers for Disease Prevention and Control of Wenzhou, Wenzhou 325000, Zhejiang, China;
    2Department of Pathophysiology, Wenzhou Medical College, Wenzhou 325035, Zhejiang, China;
    3The People's Hospital of Yongjia,Wenzhou 325100, Zhejiang, China
  • Received:2009-07-23 Revised:2009-11-02 Published:2020-10-26

Abstract: AIM: To explore the effect of SB203580, P38 mitogen activated protein kinase specific inhibitor(p38MAPK), on apoptosis during lung ischemic/reperfusion injury in rats. METHODS: 30 rats were randomly divided into three groups, group control (Group C ), group lung ischemia/reperfusion injury (Group I/R) and group SB203580 (Group S).The changes of arteriae pulmonalis apoptosis were detected with TdT-mediated dUTP nick end labeling (TUNEL). The content of Bcl-2 and Bax in cytoplasm were determined with immunohistochemistry and meanwhile the ultrastruction changes of lung were observed under electron microscope. RESULTS: Compared with Group C, the expressions of Bcl-2, Bax protein were increased and the ratio of Bcl-2/Bax were decreased in Group I/R (all P <0.01), and the apoptosis index(AI) was increased, the abnormal changes of the lung tissue in morphologically were significant in Group I/R.After using SB203580, the expression of Bcl-2 protein was increased and the expression of Bax protein was decreased, the ratio of Bcl-2/Bax was increased(all P < 0.01), the values of AI was decreased in Group I/R, and the abnormal changes of the lung tissue in morphologically were lessen at different degree (all P < 0.01). CONCLUSION: SB203580 produces notable protective effects on lung ischemic/reperfusion injury in rats by up-regulating Bcl-2 protein expression, downregulating Bax protein expression in lung tissue and regulating the balance of Bcl-2 protein and Bax protein, decreasing apoptosis.

Key words: lung, reperfusion injury, SB203580, p38 mitogen activated protein kinase, apoptosisun

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