• 1. Department of Cardio-Thoracic Surgery, Second Affiliated Hospital, Xi'an Medical College, Xi'an, 710038, P.R.China;
  • 2. Department of Thoracic Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, P.R.China;
  • 3. Department of Thoracic Surgery, Tianjin First Central Hospital of Nankai University, Tianjin, 300192, P.R.China;
YANG Bo, Email: yangbochest@nankai.edu.cn
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Objective  To analyze the role of lienal polypeptide injection in acute lung injury induced by lipopolysaccharide (LPS) in rats. Methods  Eighty male SD rats were randomly allocated into 4 groups: a LPS group, a control group, a lienal polypeptide group and a LPS+ lienal polypeptide group (20 rats in each group). Lienal polypeptide or normal saline was given with an intramuscular injection 30 min after an intraperitoneal injection of LPS (5 mg/kg). The severity of pulmonary injury was evaluated 4 h after LPS challenge by enzyme-linked immunosorbent assay (ELISA), wet-to-dry weight ratio, hematoxylin and eosin (HE) staining, TUNEL and Western blotting. Results  Lienal polypeptide injection treatment significantly attenuated LPS-induced pulmonary histopathologic changes, alveolar hemorrhage, and neutrophil infiltration. Moreover lienal polypeptide injection significantly suppressed LPS-induced activation of metastasis-associated protein-1 (MTA1). Conclusion  Lienal polypeptide injection is demonstrated to protect rats from LPS-induced acute lung injury by the expression of MTA1.

Citation: GE Peng, LI Hanjie, CHEN Xin, JING Ruijun, YAO Yuejuan, LI Jianzhong, ZHANG Weidong, YANG Bo. Lienal polypeptide injection attenuates lipopolysaccharide-induced acute lung injury in rats by metastasis-associated protein 1. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2019, 26(3): 264-268. doi: 10.7507/1007-4848.201803045 Copy

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