Role of Hereditary T Lymphocyte Immune Deficiency in Pulmonary Fibrosis Induced by Paraquat
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摘要:
目的 研究T淋巴细胞免疫缺陷在百草枯所致肺纤维化中的作用。 方法 选择BALB/C(nu/nu)裸鼠与BALB/C(nu/+)小鼠作为实验动物模型,按照20 mg/kg的百草枯一次性灌胃,灌胃1 h后用GC-MS检测血浆中百草枯的药物浓度,在小鼠中毒第7天和第28天取肺组织做病理切片,H&E,MASSON染色。 结果 2个品系的小鼠在染毒1 h后血浆中的百草枯药物浓度,差异无统计学意义(P > 0.05)。第28天的病理切片H&E、MASSON染色显示出2个品系的小鼠在肺纤维化程度方面,差异有统计学意义(P < 0.05)。 结论 T淋巴细胞参与了百草枯所致的肺纤维化的过程,但是T淋巴细胞的缺失没有完全避免百草枯诱导的肺纤维化。T淋巴细胞免疫缺陷不是百草枯所致肺纤维化的决定性因素。 -
关键词:
- 百草枯 /
- BALB/C(nu/nu)裸鼠 /
- T淋巴细胞免疫缺陷 /
- 气相色谱-质谱联用仪 /
- 肺纤维化
Abstract:Objective To study the role of T lymphocyte immune deficiency in pulmonary fibrosis induced by paraquat. Methods BALB/C (nu/nu) nude mice and BALB/C (nu/+) mice were selected as experimental animal models. Paraquat was given 20 mg/kg by intragastric administration and paraquat concentration in plasma was determined by GC-MS 1 hour after administration. Lung tissues were obtained for pathological sections on the 7th and 28th day after administration by H&E and MASSON staining. Results There was no significant difference in plasma paraquat concentration of 2 strains of mice after 1 hour of exposure (P > 0.05) . H&E and MASSON staining of pathological sections on day 28th showed that there was statistical difference in the degree of fibrosis between the two strains (P < 0.05). Conclusion T lymphocyte is involved in the pulmonary fibrosis caused by paraquat, but the loss of T lymphocytes does not completely avoid pulmonary fibrosis induced by paraquat. T lymphocyte immune deficiency is not the decisive factor of pulmonary fibrosis induced by paraquat. -
Key words:
- Paraquat /
- BALB/C (nu/nu) nude mice /
- T lymphocyte immune deficiency /
- GC-MS /
- Pulmonary-fibrosis
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