• 1. Department of Radiology, Affiliated Hospital of Yan’an University, Yan’an, Shanxi 716000, P. R. China;
  • 2. Department of pulmonary diseases, Yan’an People’s Hospital, Yan’an, Shaanxi, 716000, P. R. China;
GAO Yuan, Email: 10272006@qq.com
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Objective  To investigate the effect of imatinib mesylate on radiation-induced lung injury mice and its influence on the oxidative stress and transforming growth factor-β1 (TGF-β1) expression in mice. Methods  Forty-five C57BL/6 mice were divided into a treatment group, a control group and a model group. The treatment group and model group were given radiation of 18 Gy delivered in the thorax. After 4 h daily of the radiation, the treatment group received imatinib mesylate of 0.081 g/kg, while the other groups were given normal saline solution. The experiments were continued for 30 days. After the experiments, the lungs of mice were divided into 4 parts. The haematoxylin and eosin and immunohistochemical stain were prepared to observe the situation of pathology and TGF-β1. The lung homogenate was prepared and the levels of superoxide dismutase (SOD), malondialdehyde (MDA), total antioxidant capacity (T-Aoc) and glutathione peroxidase (GSH-PX) were detected. Results  The levels of GSH-PX, T-Aoc and SOD were (173.15±12.21) U, (119.33±11.06) U/mgprot and (1.73±0.33) nmol/mgprot in the treatment group, significantly higher than the control group, while the levels of MDA was (0.68±0.08) nmol/mgprot, significantly lower than the control group (P<0.05). The HE and immunohistochemical stain showed that there were mild alveolar inflammatory changes in the treatment group while such changes were serious in the model group. The scores of HE and immunohistochemical were 1.26±0.12 and 0.31±0.12 in the treatment group, significantly lower than those in the control group (P<0.05). Conclusion  The imatinib mesylate can effectively ameliorate the oxidative stress and inhibite TGF-β1 expression in radiation-induced lung injury mice.

Citation: LIU Wenxiu, YANG Juan, CAO Bo, GAO Yuan. Preventive and therapeutic effect of imatinib mesylate on radiation-induced lung injury mice and its influence on the oxidative stress and transforming growth factor-β1 expression in mice. Chinese Journal of Respiratory and Critical Care Medicine, 2017, 16(5): 446-450. doi: 10.7507/1671-6205.201703027 Copy

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