...
首页> 外文期刊>Cytokine >Role of CD23 in astrocytes inflammatory reaction during HIV-1 related encephalitis.
【24h】

Role of CD23 in astrocytes inflammatory reaction during HIV-1 related encephalitis.

机译:CD23在HIV-1相关性脑炎期间星形胶质细胞炎症反应中的作用。

获取原文
获取原文并翻译 | 示例
           

摘要

Soluble factors released by intra-cerebral activated cells are implicated in neuronal alterations during central nervous system inflammatory diseases. In this study, the role of the CD23 pathway in astrocyte activation and its participation in human immunodeficiency virus-1 (HIV-1)-induced neuropathology were evaluated. In human primary astrocytes, CD23 protein membrane expression was dose-dependently upregulated by gp120. It was also upregulated by gamma-interferon (gamma-IFN) and modulated by interleukin-1-beta (IL-1beta) whereas microglial cells in these stimulation conditions did not express CD23. Cell surface stimulation of CD23 expressed by astrocytes induced production of nitric oxide (NO) and IL-1beta which was inhibited by a specific inducible NO-synthase (iNOS) inhibitor (aminoguanidine), indicating the implication of this receptor in the astrocyte inflammatory reaction. On brain tissues from five out of five patients with HIV-1-related encephalitis, CD23 was expressed by astrocytes and by some microglial cells, whereas it was not detectable on brain tissue from five of five HIV-1-infected patients without central nervous system (CNS) disease or from two of two control subjects. In addition, CD23 antigen was co-localized with iNOS and nitrotyrosine on brain tissue from patients with HIV1-related encephalitis, suggesting that CD23 participates in iNOS activation of astrocytes in vivo. In conclusion, CD23 ligation is an alternative pathway in the induction of inflammatory product synthesis by astrocytes and participates in CNS inflammation.
机译:在中枢神经系统炎症性疾病期间,大脑内活化细胞释放的可溶性因子与神经元改变有关。在这项研究中,评估了CD23通路在星形胶质细胞活化中的作用及其在人免疫缺陷病毒1(HIV-1)诱导的神经病理学中的参与。在人类原代星形胶质细胞中,gp120剂量依赖性上调了CD23蛋白膜的表达。它也被γ-干扰素(γ-IFN)上调,并被白介素1-β(IL-1beta)调节,而在这些刺激条件下的小胶质细胞不表达CD23。星形胶质细胞表达的CD23的细胞表面刺激可诱导一氧化氮(NO)和IL-1β的产生,而该生成被特异性诱导型一氧化氮合酶(iNOS)抑制剂(氨基胍)抑制,表明该受体参与星形胶质细胞炎症反应。在五分之五的HIV-1相关性脑炎患者中,五分之二的脑组织上CD23由星形胶质细胞和一些小胶质细胞表达,而五分之五的无中枢神经系统的HIV-1感染患者的脑组织中均未检测到CD23。 (CNS)疾病或来自两个对照受试者中的两个。此外,CD23抗原与iNOS和硝基酪氨酸共定位在HIV1相关性脑炎患者的脑组织上,这表明CD23参与了体内星形胶质细胞的iNOS激活。总之,CD23连接是星形胶质细胞诱导炎症产物合成的另一种途径,并参与中枢神经系统炎症。

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