Glomerular nitrite synthesis in in situ immune complex glomerulonephritis in the rat.

Glomerular nitrite synthesis in in situ immune complex glomerulonephritis in the rat.
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大鼠原位免疫复合物肾小球肾炎中肾小球亚硝酸盐的合成。

DOI:
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发表时间:
1991
影响因子:
6
通讯作者:
Richard Sullivan
Richard Sullivan
中科院分区:
医学2区
文献类型:
--
作者:
H. Cook;Richard Sullivan

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亚硝酸盐(NO2-)是细胞培养中产生一氧化氮(NO)的主要终产物。作者在大鼠原位免疫复合物肾小球肾炎中检测了肾小球的亚硝酸盐产生。在预先免疫的大鼠中,通过单侧肾脏灌注阳离子化的人γ G免疫球蛋白(IgG)诱导肾小球肾炎。48小时后测定肾小球培养上清中NO2-含量。诱导肾小球肾炎后4天,肾炎肾小球产生最多NO2-(24.4 +/- 11.4 pmol/肾小球/48小时)。脂多糖(LPS; 1微克/毫升)可增加产量(54 +/- 4.9 pmol/肾小球; P <0.001)。一氧化氮合酶抑制剂NG-单甲基-L-精氨酸可抑制NO2-的产生,表明NO通过合成。地塞米松(10(-7)mol/l [摩尔])可减少腹腔巨噬细胞和肾炎肾小球的LPS刺激产生(P <0.01)。从肾炎肾小球分离的巨噬细胞产生NO2-(4.9 +/- 0.6 nmol/10(5)个细胞)。肾炎肾小球NO的产生与肾小球损伤和肾小球血流动力学机制有关。地塞米松的作用可以部分解释类固醇对肾小球肾炎的改善作用。
Nitrite (NO2-) is the major end product of nitric oxide (NO) production in cell culture. The authors have examined nitrite production by glomeruli in in situ immune complex glomerulonephritis in the rat. Glomerulonephritis was induced by unilateral renal perfusion of cationized human gamma G immunoglobulin (IgG) in preimmunized rats. NO2- was measured in culture supernatants of isolated glomeruli after 48 hours. NO2- was produced by nephritic glomeruli with a maximum 4 days after induction of glomerulonephritis (24.4 +/- 11.4 pmol/glomerulus/48 hours). Production was increased by lipopolysaccharide (LPS; 1 micrograms/ml) (54 +/- 4.9 pmol/glomerulus; P less than 0.001). NO2- production was inhibited by the nitric oxide synthase inhibitor NG-monomethyl-L-arginine demonstrating synthesis through NO. Dexamethasone (10(-7) mol/l [molar]) reduced LPS-stimulated production by peritoneal macrophages and nephritic glomeruli (P less than 0.01). Macrophages isolated from nephritic glomeruli produced NO2- (4.9 +/- 0.6 nmols/10(5) cells). The production of NO by nephritic glomeruli has implications for mechanisms of glomerular injury and glomerular hemodynamics. The effect of dexamethasone may explain in part the ameliorative effect of steroids in glomerulonephritis.
DOI: 10.1073/pnas.84.18.6369
发表时间: 1987-09-01
影响因子: 11.1
作者:
IYENGAR, R;STUEHR, DJ;MARLETTA, MA
通讯作者: MARLETTA, MA
DOI: 10.1152/ajprenal.1989.257.1.f60
发表时间: 1989-07-01
影响因子: --
作者:
GARG, UC;HASSID, A
通讯作者: HASSID, A
皮质类固醇抑制小鼠巨噬细胞 Ia 表达和白细胞介素 1 产生。
DOI: --
发表时间: 1982
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Snyder,DS;Unanue,ER
通讯作者: Unanue,ER
DOI: 10.1021/bi00424a003
发表时间: 1988-11-29
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
MARLETTA, MA;YOON, PS;WISHNOK, JS
通讯作者: WISHNOK, JS
DOI: 10.1073/pnas.82.22.7738
发表时间: 1985-01-01
影响因子: 11.1
作者:
STUEHR, DJ;MARLETTA, MA
通讯作者: MARLETTA, MA