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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Pharmacological and immunohistochemical evidence for a functional nitric oxide synthase system in rat peritoneal eosinophils
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Pharmacological and immunohistochemical evidence for a functional nitric oxide synthase system in rat peritoneal eosinophils

机译:在大鼠腹膜嗜酸性粒细胞中功能性一氧化氮合酶系统的药理和免疫组化证据

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摘要

Eosinophil migration in vivo is markedly at- tenuated in rats treated chronically with the NO synthase (NOS) inhibitor N-nitro-L-arginine methyl ester (L-NAME). In this study, we investigated the existence of a NOS system in eosino- phils. Our results demonstrated that rat peritoneal eosinophils strongly express both type II (30.2 + - 11.6/100 of counted cells) and type III (24.7 + - 7.4/100 of counted cells) NOS, as detected by immunohistochemistry using affinity purified mouse mAbs. Eosinophil migration in vitro was evaluated by using 48-well microchemotaxis chambers and the chemotactic agents used were N-formyl-methionyl-leucyl-phenylalanine (fMLP, 5 * 10~-8 M) and leukotriene B4 (LTB4, 108 M).
机译:长期用NO合酶(NOS)抑制剂N-硝基-L-精氨酸甲酯(L-NAME)治疗的大鼠体内的嗜酸性粒细胞迁移明显减弱。在这项研究中,我们调查了嗜酸性粒细胞中NOS系统的存在。我们的研究结果表明,大鼠腹膜嗜酸性粒细胞强烈表达II型(计数细胞的30​​.2 +-11.6 / 100)和III型(计数细胞的24.7 +-7.4 / 100)NOS,这是使用亲和纯化的小鼠mAb通过免疫组织化学检测到的。嗜酸性粒细胞在体外的迁移是通过48孔微趋化室评估的,趋化剂为N-甲酰基-甲硫酰基-亮氨酰-苯丙氨酸(fMLP,5 * 10〜-8 M)和白三烯B4(LTB4,108 M)。

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