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机构地区:[1]浙江大学生命科学与医学工程学系 [2]浙江大学生命科学与技术系,杭州310027
出 处:《生理学报》1999年第4期435-438,共4页Acta Physiologica Sinica
基 金:国家自然科学基金
摘 要:大鼠侧脑室注射(icv)100 ng 精氨酸加压素(AVP) , 用ELISA 法检测血中对鸡卵白蛋白抗原产生的IgG抗体水平。结果显示,IgG 水平高于对照, 而AVP 的V1 受体阻断剂DPAVP(1deaminopenicillamine 2omethyltyrosineAVP) 则可阻断此作用;icv 800 ng AVP, 大鼠的SRBC溶血素水平高于对照;icv 100 ng、800 ng AVP2 h 后, 脾淋巴细胞对MTT产生的颜色反应均比对照增加, 而DPAVP 可阻断之;icv 800 ng AVP 后, 血清去甲肾上腺素(NE) 水平明显低于对照,icv 100 ng 和800 ng AVP, 血清皮质酮水平下降。因此, 本研究提示,AVP 在脑内通过V1 受体可增强大鼠部分免疫指标的功能。结合以前AVP 对下丘脑促肾上腺皮质激素释放激素(CRF)有抑制作用的实验结果, 推论这种增强作用的机制可能是AVP 抑制下丘脑处CRF释放, 从而减弱了下丘脑垂体肾上腺皮质轴的功能,The effects of arginine vasopressin (AVP) on some immune parameters of rats were studied by using icv of AVP. The hemolysin to sheep red blood cell and IgG production were enhanced by icv of 100, 800 ng AVP. Both the actions were partly blocked by icv preinjection of the V 1 receptor antagonist DPAVP. It was also found that the NE and corticosterone levels in the serum of rats were significantly reduced after icv of AVP. The above results suggest that AVP executes immunofunctions through V 1 receptors in the paraventricular nucleus of the brain. Considering our previous results, the AVP enhanced immunofunction may be related to its inhibition of corticotropin releasing factor release or the excitatory activity of sympathetic nerves.
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