有一种胰岛素依赖型糖尿病是由于患者体内某种T细胞过度激活为效应T细胞后，选择性地与胰岛B细胞密切接触，导致胰岛B细胞死亡而发病，下列叙述正确的是( )。
- A.这种胰岛素依赖型糖尿病属于自身免疫病
- B.患者血液中胰岛素水平高于正常生理水平
- C.效应T细胞将抗原传递给胰岛B细胞致其死亡
- D.促进T细胞增殖的免疫增强剂可用于治疗该病
正确答案及解析
正确答案
解析
患者由于体内某种T细胞过度激活为效应T细胞后，选择性地与胰岛B细胞密切接触，导致自身的胰岛B细胞死亡而发病，所以属于自身免疫病，A项正确。患者的胰岛B细胞受损死亡会导致胰岛素合成分泌减少，胰岛素水平下降，B项错误。效应T细胞通过与靶细胞的密切接触，使靶细胞裂解发挥免疫效应，不具有传递抗原的作用，C项错误。患者由于T细胞过度激活，免疫功能异常增强导致胰岛B细胞受损，所以不能使用免疫增强剂治疗该病，D项错误。
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