) was used as an index of the production of nitric oxide by human and rat polymorphonuclear leukocytes (PMN) and rat peritoneal macrophages. Human peripheral blood PMN did not produce significant levels of NO2−. Attempts to induce NO2− generation in human PMN by incubation with GM–CSF (1 nM), TNFα (0.3 nM), endotoxin (1 μg/ml) or formyl-Met-Leu-Phe (100 nM) for up to 16 h were not successful. Addition of human PMN primed by GM–CSF (1 nM) to rabbit aortic ring preparations precontracted with phenylephrine had no effect on tone. In contrast to these observations, PMN, isolated from the peritoneum of oyster glycogen treated rats, generated NO2− via a pathway sensitive to inhibition by the nitric oxide synthase inhibitor, NG-monomethyl L-arginine. However, peripheral blood rat PMN obtained from the same animals did not produce NO2−, even during prolonged incubation for periods of up to 16 h. It is suggested that detectable NO production by PMN requires NO synthase activity to be induced either by the process of PMN migration or by exposure to certain cytokines produced locally at the site of inflammation.">
a·g·斯图尔特,1g . j .除尘,2r . g . Giarracca,2t·哈里斯,1y Lim,2和c·g·索贝3
收到了1993年5月27日
接受05年7月1993年
文摘
亚硝酸盐的生成(
N
O
2
−)是用作生产指数一氧化氮的人类和老鼠多形核白细胞(中性粒细胞)和大鼠腹膜巨噬细胞。人类外周血中性粒细胞没有产生显著的水平
N
O
2
−。试图诱导
N
O
2
−代在人类中性粒细胞通过与gm - csf(1纳米)孵化,TNFα(0.3海里)、内毒素(1μg /毫升)或formyl-Met-Leu-Phe(100海里)16 h并不成功。除了人类中性粒细胞影射的gm - csf(1纳米)兔主动脉环准备订婚与去甲肾上腺素对语气没有影响。这些观察相比,中性粒细胞,孤立的牡蛎糖原治疗大鼠腹膜的,生成的
N
O
2
−通过路径敏感的抑制一氧化氮合酶抑制剂,NG单甲精氨酸。然而,老鼠外周血中性粒细胞从相同的动物没有产生
N
O
2
−,即使在长时间的孵化期16 h。建议检测没有生产中性粒细胞不需要合酶活性诱导通过中性粒细胞迁移的过程或接触某些细胞因子产生局部的炎症。