Interaction of nitric oxide synthase inhibitors and their D-enantiomers with rat neutrophil luminol dependent chemiluminescence response

被引:14
作者
Dikshit, M
Chari, SS
Seth, P
Kumari, R
机构
[1] Pharmacology Division, Central Drug Research Institute
关键词
L-arginine analogues; polymorphonuclear leukocytes; Luminol- and lucigenin-dependent chemiluminescence; cytochrome c reduction; myeloperoxidase; oxygen consumption;
D O I
10.1111/j.1476-5381.1996.tb15711.x
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
1 Formyl-methionyl-leucyl-phenylalanine (FMLP) or arachidonic acid (AA) induced luminol dependent chemiluminescence (LCL) response of rat polymorphonuclear leukocytes (PMNLs) was found to be inhibited by nitric oxide synthease inhibitors and their D-enantiomers. 2 Rat PMNLs LCL response was inhibited by N-G-nitro-L-arginine methyl ester (L-NAME), D-NAME, N-G-monomethyl-L-arginine (L-NMMA) or D-NMMA, in a concentration- and time-dependent manner. 3 It was observed that both L- and D-enantiomers of the arginine analogues (1000 mu M) did not inhibit AA induced lucigenin-dependent chemiluminescence (LUCDCL) response and cytochrome c reduction, used for estimating the NADPH-oxidase activity in the cells and in the cell free system, respectively. 4 None of the L- and D-enantiomers had any effect on either rat basal PMNLs or AA-induced oxygen consumption. 5 In addition, neither the L nor D-enantiomers of NAME altered either AA-induced release or the activity of myeloperoxidase from rat PMNLs azurophilic granules. 6 The results obtained indicate that the attenuation of the LCL response by L- and D-enantiomers of arginine analogues, is a non-specific effect as there was no inhibition of NADPH-oxidase and MPO activity, MPO release or oxygen consumption. Therefore, the data obtained indicate that these agents should be used with caution to analyse the role of nitric oxide in rat PMNLs LCL response.
引用
收藏
页码:578 / 582
页数:5
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