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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Severe reduction in leukocyte adhesion and monocyte extravasation in mice deficient in CC chemokine receptor 2
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Severe reduction in leukocyte adhesion and monocyte extravasation in mice deficient in CC chemokine receptor 2

机译:CC趋化因子受体2缺乏症小鼠的白细胞粘附和单核细胞外渗严重减少

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摘要

CC chemokine receptor 2 (CCR2) is a prom- inent receptor for the monocyte chemoattractant protein (MCP) group of CC chemokines. Mice generated by gene targeting to lack CCR2 exhibit normal leukocyte rolling but have a pronounced defect in MCP-1-induced leukocyte firm adhesion to microvascular endothelium and reduced leuko- cyte extravasation. Constitutive macrophage trafficking into the peritoneal cavity was not significantly different between CCR2-deficient and wild-type mice. However, after intraperi- toneal thioglycollate injection, the number of peritoneal mac- rophages in CCR2-deficient mice did not rise above basal levels, whereas in wild-type mice the number of macrophages at 36 h was ≈3.5 times the basal level.
机译:CC趋化因子受体2(CCR2)是CC趋化因子的单核细胞趋化蛋白(MCP)组的重要受体。基因靶向产生的缺乏CCR2的小鼠表现出正常的白细胞滚动,但MCP-1诱导的白细胞牢固粘附于微血管内皮并减少白细胞外渗具有明显缺陷。组成型巨噬细胞向腹膜腔的运输在CCR2缺陷型和野生型小鼠之间没有显着差异。然而,腹膜内注射巯基乙酸盐后,CCR2缺陷型小鼠腹膜巨噬细胞的数量没有超过基础水平,而在野生型小鼠中,在36 h时,巨噬细胞的数量约为基础水平的3.5倍。

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