Cytokine-treated human neutrophils contain inducible nitric oxide synthase that produces nitration of ingested bacteria

Evans, T.J. , Buttery, L.D.K., Carpenter, A., Springall, D.R., Polak, J.M. and Cohen, J. (1996) Cytokine-treated human neutrophils contain inducible nitric oxide synthase that produces nitration of ingested bacteria. Proceedings of the National Academy of Sciences of the United States of America, 93(18), pp. 9553-9558.

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Abstract

Although the production of NO within rodent phagocytes is well-characterized, its production and function within human phagocytes are less clear. We show here that neutrophils within human buffy coat preparations stimulated with a mixture of interleukin 1, tumor necrosis factor alpha, and interferon gamma contain inducible NO synthase mRNA and protein, one of the enzymes responsible for NO production. The protein colocalizes with myeloperoxidase within neutrophil primary granules. Using an inhibitor of NO synthase, L-N-monomethyl arginine, we show that activity of this enzyme is required for the formation of nitrotyrosine around phagocytosed bacteria, most likely through the intermediate production of peroxynitrite, a reaction product of NO and superoxide anions.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Evans, Professor Tom
Authors: Evans, T.J., Buttery, L.D.K., Carpenter, A., Springall, D.R., Polak, J.M., and Cohen, J.
College/School:College of Medical Veterinary and Life Sciences > Institute of Infection Immunity and Inflammation
Journal Name:Proceedings of the National Academy of Sciences of the United States of America
Publisher:National Academy of Sciences
ISSN:0027-8424
ISSN (Online):1091-6490

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