...
首页> 外文期刊>Cytokine >Expression of interleukin 1 alpha and beta, and interleukin 1 receptor antagonist mRNA in the rat central nervous system after peripheral administration of lipopolysaccharides.
【24h】

Expression of interleukin 1 alpha and beta, and interleukin 1 receptor antagonist mRNA in the rat central nervous system after peripheral administration of lipopolysaccharides.

机译:外周给予脂多糖后,大鼠中枢神经系统中白介素1α和β以及白介素1受体拮抗剂mRNA的表达。

获取原文
获取原文并翻译 | 示例
           

摘要

Interleukin 1alpha (IL-1alpha) and IL-1beta, and the endogenous IL-1 receptor antagonist (IL-1ra) are known members of the IL-1 family. Using in situ hybridization histochemistry we demonstrated that following endotoxin injection (lipopolysaccharides, LPS, 2.0 mg/kg, i.p.) a time dependent expression and partly different expression patterns of the cytokines occurred within the rat brain and pituitary gland. All cytokines were observed in the choroid plexus. In addition, IL-1ra mRNA expressing cells were observed scattered in the brain parenchyma, whereas scattered IL-1beta mRNA expressing cells were restricted to central thalamic nuclei, the dorsal hypothalamus, and cortical regions, such as the parietal and frontal cortex. A strong IL-1beta mRNA expression was found in the circumventricular organs. In the pituitary gland, a low IL-1alpha and a high IL-1beta mRNA expression was observed, with the highest density of cytokine-expressing cells seen in the posterior pituitary. The cell types expressing the mRNA's of IL-1alpha, IL-1beta and IL-1ra were identified as monocytes in the circumventricular organs and the pituitary gland, and as microglia in the brain parenchyma. In conclusion, the present findings revealed that cytokine production in response to a peripheral endotoxin challenge mainly occurs in peripherally derived monocytes in the circumventricular organs and the pituitary gland. IL-1beta is the predominant form expressed, whereas the expression of IL-1alpha mRNA and IL-1ra mRNA is lower. Our observations support the view that peripherally derived IL-1 may play a role in the induction of centrally mediated illness symptoms.
机译:白介素1alpha(IL-1alpha)和IL-1beta,以及内源性IL-1受体拮抗剂(IL-1ra)是IL-1家族的已知成员。使用原位杂交组织化学,我们证明了在注射内毒素(脂多糖,LPS,2.0 mg / kg,腹腔注射)后,大鼠脑和垂体内细胞因子发生了时间依赖性表达和部分不同的表达方式。在脉络丛中观察到所有细胞因子。此外,观察到IL-1ra mRNA表达细胞散布在脑实质中,而散布的IL-1beta mRNA表达细胞则局限于丘脑中央核,下丘脑背侧和皮质区域,如顶叶和额叶皮层。在室室器官中发现了强烈的IL-1βmRNA表达。在垂体中观察到低的IL-1alpha和高的IL-1beta mRNA表达,在垂体后叶中观察到最高的细胞因子表达细胞密度。表达IL-1alpha,IL-1beta和IL-1ra mRNA的细胞类型被确定为在室室器官和垂体中的单核细胞,在脑实质中为小胶质细胞。总之,本发明发现揭示了响应外周内毒素挑战的细胞因子产生主要发生在脑室和垂体的外周单核细胞中。 IL-1beta是主要表达形式,而IL-1alpha mRNA和IL-1ra mRNA的表达较低。我们的观察结果支持以下观点:外周来源的IL-1可能在诱导中枢介导的疾病症状中起作用。

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