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中国临床药理学与治疗学 ›› 2005, Vol. 10 ›› Issue (12): 1354-1357.

• 研究原著 • 上一篇    下一篇

低温时蛙皮素对 IL-1β致热大鼠下丘脑和血浆 cAMP含量的影响

张量, 佟雷1, 杨宇, 赵书芬1   

  1. 沈阳医学院生理教研室, 沈阳 110034, 辽宁;
    1中国医科大学基础医学院生理教研室, 沈阳 110001, 辽宁
  • 收稿日期:2005-02-23 修回日期:2005-04-05 出版日期:2005-12-26 发布日期:2020-11-11
  • 通讯作者: 赵书芬,女,教授,硕士生导师,研究方向:体温调节。Tel:024-23256666-5301
  • 基金资助:
    辽宁省自然科学基金资助课题(No972229)

Effects of bombesin on cAMPcontent of hypothalamus and plasma in IL-1β-induced feverrats underlowertemperature

ZHANG Liang, TONG Lei1, ZHAO Shu-fen1   

  1. Department of Physiology,Shenyang Medical College,Shenyang 110034,Liaoning,China;
    1Department of Physiology,China Medical University,Shenyang 110001,Liaoning,China
  • Received:2005-02-23 Revised:2005-04-05 Online:2005-12-26 Published:2020-11-11

摘要: 目的: 以大鼠为实验对象建立发热动物模型,研究 4 ℃时蛙皮素的降温作用及其与 cAMP的关系。方法: 选择 SD雄性大鼠,4 ℃下侧脑室微量注射蛙皮素、白细胞介素-1β,观察大鼠体温变化情况,并测定下丘脑和血浆中 cAMP含量。结果: 在 IL-1β诱导发热大鼠中,下丘脑及血浆中 cAMP含量与对照组相比升高(P<0.01);蛙皮素可以降低大鼠正常体温,下丘脑 cAMP含量与对照组相比亦随之降低(P<0.01);预先侧脑室注射蛙皮素能翻转大鼠IL-1β性发热,且下丘脑 cAMP含量与 IL-1β组相比明显下降(P<0.01) 。结论: 4 ℃时蛙皮素能抑制IL-1β发热,其机制有可能是通过抑制 cAMP合成或释放实现的。

关键词: 蛙皮素, 白细胞介素-1β, cAMP, 发热, 下丘脑, 体温调节

Abstract: AIM: To study the effectsof bombesin on thermoregulation and its relationshiPwith camPcontent at 4 ℃.METHODS: Bombesin and IL-1βwere microin-jected into the lateral ventricles (LV) of male SD rats.Changes in colonic temperature and content of cAMPin hypothalamus and plasma were measured.RESULTS: (1) In the febrile rats induced by i.c.v.injection of IL-1β,content of cAMPin hypothalamus and plasma in-creased (P<0.01).(2) Bombesin could lowernormal body temperature in rats.Content of cAMPin hypothala-mus was lowerthan that in the control grouP(P<0.01).(3) Feverinduced by IL-1βwas reversed by pretreatment with bombesin,and content of cAMPin hypothalamuswas decreased compared with that in control grouP(P<0.01).CONCLUSION: Bombesin can inhibit IL-1β-in-duced feverat 4 ℃,and the mechanism may be related to the inhibition the synthesis and release of cAMP.

Key words: bombesin, interlukin-1β, cAMP, fe-ver, hypothalamus, thermoregulation

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