title: Inhibition of natural killer (NK) cell activity against varicella-zoster virus (VZV)-infected fibroblasts and lymphocyte activation in response to VZV antigen by nitric oxide-releasing agents.
abstract: The addition of nitric oxide (NO)-releasing agents, S-nitroso-N-acetyl-DL-penicillamine (SNAP), 1-hydroxy-2-oxo-2,3-bis(2-aminoethyl)-1-triazene (NOC18), 30{(+/-)-(E)-ethyl-2'-[(E)-hydroxyimino]-5-nitro-3-hexenecarbam oyl} -pyridine (NOR4) significantly inhibited NK cell activity against VZV-infected cells, while antibody-dependent cell-mediated cytotoxicity (ADCC) against VZV-infected cells was unaffected. Interferon-alpha (IFN-alpha) production by non-adherent peripheral blood mononuclear cells (NPBMC) cultured with VZV-infected cells was decreased by the addition of NO-releasing agents. Lymphocyte proliferation and the expression IL-2 receptor (CD25) in response to VZV antigen were also inhibited by the addition of NO-releasing agents. These results suggest that the production of NO by an inflammatory process may lead to inhibition of NK cell- and T cell-mediated immunity to VZV infection.
authors.affiliation: Department of Paediatrics, Mie University School of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ito
authors.forename: M
authors.initials: M
authors.lastname: Watanabe
authors.forename: H
authors.initials: H
authors.lastname: Kamiya
authors.forename: M
authors.initials: M
authors.lastname: Sakurai
mesh_terms: D000328:Adult; D000920:Antibody-Dependent Cell Cytotoxicity / Q000187:drug effects*; D000956:Antigens, Viral / Q000276:immunology*; D005347:Fibroblasts / Q000187:drug effects / Q000276:immunology* / Q000821:virology*; D014645:Herpesvirus 3, Human / Q000187:drug effects / Q000276:immunology*; D006801:Humans; D007694:Killer Cells, Natural / Q000187:drug effects* / Q000276:immunology; D008213:Lymphocyte Activation / Q000187:drug effects*; D009569:Nitric Oxide / Q000378:metabolism*; D009603:Nitroso Compounds / Q000494:pharmacology; D010396:Penicillamine / Q000031:analogs & derivatives / Q000494:pharmacology; D026423:S-Nitroso-N-Acetylpenicillamine; D000254:Sodium-Potassium-Exchanging ATPase / Q000037:antagonists & inhibitors
chemical_list: D000956:Antigens, Viral; C093285:NOC 18; D009603:Nitroso Compounds; D009569:Nitric Oxide; D026423:S-Nitroso-N-Acetylpenicillamine; D000254:Sodium-Potassium-Exchanging ATPase; D010396:Penicillamine