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Enhancement of nitric oxide synthesis by macrophages represents an additional mechanism of action for amphotericin B
Author(s) -
Neelufar Mozaffarian,
Joan W. Berman,
A. Casadevall
Publication year - 1997
Publication title -
antimicrobial agents and chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.07
H-Index - 259
eISSN - 1070-6283
pISSN - 0066-4804
DOI - 10.1128/aac.41.8.1825
Subject(s) - cryptococcus neoformans , amphotericin b , nitrite , nitric oxide , microbiology and biotechnology , virulence factor , macrophage , mechanism of action , virulence , polysaccharide , phagocytosis , antibiotics , chemistry , interferon gamma , cytokine , biology , immunology , antifungal , biochemistry , in vitro , nitrate , organic chemistry , gene
Amphotericin B (AmB) enhanced nitrite synthesis by murine macrophage-like J774.16 cells in a dose-dependent fashion. This effect was retained in the presence of Cryptococcus neoformans capsular polysaccharide, a known virulence factor. AmB and anticapsular antibody increased nitrite synergistically. In all cases, AmB required gamma interferon; C. neoformans cells were unable to elicit nitrite, with or without AmB.

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