电磁脉冲对犬淋巴细胞损伤及其机制的实验研究

来源 :中华医学杂志 | 被引量 : 0次 | 上传用户:zhaoxin1987212
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目的研究电磁脉冲(EMP)对犬淋巴细胞的损伤效应,并探讨其作用机理。方法用酸性磷酸酯酶细胞化学方法检测T、TH和Ts淋巴细胞,用原位末端标记和免疫细胞化学技术分析淋巴细胞凋亡和Bcl-2、Bax蛋白的改变。结果 (2-12)×104 V/m的场强能使外周血T细胞及其亚群出现明显降低;凋亡淋巴细胞随照射剂量的增加而明显升高;不同剂量照射后10天,淋巴细胞Bax蛋白的表达明显增强,与淋巴细胞凋亡呈现出比较好的相关性,而Bcl-2蛋白显著降低。结论首次证实一定场强的EMP确实能损伤淋巴细胞,并呈现出较好的剂量效应关系。淋巴细胞凋亡是EMP引起淋巴细胞死亡和机体免疫功能降低的主要原因,Bax和Bcl-2在上述凋亡调控中起着重要作用。
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