首页> 外文期刊>Life sciences >The lymphocytic cholinergic system and its biological function.
【24h】

The lymphocytic cholinergic system and its biological function.

机译:淋巴细胞胆碱能系统及其生物学功能。

获取原文
获取原文并翻译 | 示例
           

摘要

Lymphocytes are now known to possess the essential components for a non-neuronal cholinergic system. These include acetylcholine (ACh); choline acetyltransferase (ChAT), its synthesizing enzyme; and both muscarinic and nicotinic ACh receptors (mAChRs and nAChRs, respectively). Stimulating lymphocytes with phytohemagglutinin, a T-cell activator; Staphylococcus aureus Cowan I, a B-cell activator; or cell surface molecules enhances the synthesis and release of ACh and up-regulates expression of ChAT and M(5) mAChR mRNAs. Activation of mAChRs and nAChRs on lymphocytes elicits increases in the intracellular Ca(2+) concentration and stimulates c-fos gene expression and nitric oxide synthesis. On the other hand, long-term exposure to nicotine down-regulates expression of nAChR mRNA. Abnormalities in the lymphocytic cholinergic system have been detected in spontaneously hypertensive rats and MRL-lpr mice, two animal models of immune disorders. Taken together, these data present a compelling picture in which immune function is, at least in part, under the control of an independent non-neuronal lymphocytic cholinergic system.
机译:现在已知淋巴细胞具有非神经胆碱能系统的必需成分。这些包括乙酰胆碱(ACh);胆碱乙酰基转移酶(ChAT),其合成酶;以及毒蕈碱型和烟碱型ACh受体(分别为mAChRs和nAChRs)。用植物血凝素(一种T细胞激活剂)刺激淋巴细胞;金黄色葡萄球菌Cowan I,一种B细胞激活剂;或细胞表面分子增强ACh的合成和释放,并上调ChAT和M(5)mAChR mRNA的表达。淋巴细胞上的mAChRs和nAChRs的激活引起细胞内Ca(2+)浓度增加,并刺激c-fos基因表达和一氧化氮合成。另一方面,长期暴露于尼古丁会下调nAChR mRNA的表达。在自发性高血压大鼠和MRL-lpr小鼠这两种免疫失调的动物模型中,已经检测到了淋巴细胞胆碱能系统的异常。综上,这些数据提供了令人信服的图景,其中免疫功能至少部分在独立的非神经元淋巴细胞胆碱能系统的控制下。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号