The central pyrogenic action of interleukin-6 is related to nuclear translocation of STAT3 in the anteroventral preoptic area of the rat brain

被引:12
作者
Hübschle, T [1 ]
Harré, EM [1 ]
Meyerhof, W [1 ]
Pehl, U [1 ]
Roth, J [1 ]
Gerstberger, R [1 ]
机构
[1] Univ Giessen, Inst Vet Physiol, D-35392 Giessen, Germany
关键词
fever; ventromedial preoptic area (VMPO); vascular organ of the lamina terminalis (OVLT); cytokines; signal transducer and activator of transcription (STAT3); immunohistochemistry;
D O I
10.1016/S0306-4565(01)00034-1
中图分类号
Q [生物科学];
学科分类号
07 [理学]; 0710 [生物学]; 09 [农学];
摘要
(1) In animals treated with i.c.v. pyrogen free saline Constitutive STAT3-expression was low and predominantly detected within the cytoplasm of large cells in the medio-caudal hypothalamus. (2) Wistar rats treated with i.c.v. IL-6 (100 200 ng) developed a clear febrile response 90-120 min post treatment and showed a strong STAT3-upregulation and -translocation into cell nuclei at various fore- and hindbrain sites that was already observed 15-30 min after the treatment. (3) The most intense IL-6-induced STAT3-activation pattern was found within the vascular organ of the lamina terminalis and the adjacent ventromedial preoptic area. (4) STAT3-immunohistochemistry therefore represents a novel tool to functionally map IL-6 actions on the brain. The results further support the importance of the anteroventral preoptic area as main central IL-6 target involved in the mediation of fever responses. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:299 / 305
页数:7
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