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瘦蛋白(Leptin):免疫治疗的新靶点 被引量:2

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摘要 瘦蛋白是脂肪细胞分泌的一种激素 ,在结构上属于长链螺旋细胞因子家族 ,其信号通过I型细胞因子受体 (Ob R)。瘦蛋白是脂肪、能量平衡和生殖机能之间的调节环节。缺乏瘦蛋白肥胖的ob ob小鼠会出现体温过低、饮食过多、不育、免疫缺陷、淋巴样器官萎缩及细胞数减少等症状。正常小鼠急性饥饿伴有瘦蛋白水平下降时和ob ob小鼠类似 ,也会引起胸腺萎缩和对抗原的DTH反应降低。给予瘦蛋白可以逆转正常小鼠在急性饥饿时的上述免疫抑制反应。因此 ,瘦蛋白对于诱发和维持炎症性Th1免疫反应在维持营养状况和T细胞的机能方面起着关键性的作用 ,有可能在某些病理生理情况下成为免疫治疗的一个新靶点。
出处 《国外医学(免疫学分册)》 2004年第3期125-129,共5页 Foreign Medical Sciences(Section of Immunology Foreign Medical Sciences)
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