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M9620878.TXT
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1996-02-26
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Document 0878
DOCN M9620878
TI Release of hydrogen peroxide from human T cell lines and normal
lymphocytes co-infected with HIV-1 and mycoplasma.
DT 9602
AU Chochola J; Strosberg AD; Stanislawski M; Departement des Maladies
Infectieuses, Parasitaires et; Tropicales, INSERM U313, CHU
Pitie-Salpetriere, Paris, France.
SO Free Radic Res. 1995 Sep;23(3):197-212. Unique Identifier : AIDSLINE
MED/96002901
AB Human T-cell lines and normal lymphocytes persistently or acutely
co-infected with the human immunodeficiency virus type 1 (HIV-1) and
mycoplasmas were found to release hydrogen peroxide (H2O2), a likely
cause of oxidative stress in these cells. The spectrofluorometric
measurement of H2O2 release from these cells, using the scopoletin
fluorescence quenching technique, gave values of 16-84 p moles/10(6)
cells/min. In CEM cells, H2O2 was released only when acutely co-infected
with HIV-1 and mycoplasmas, and not when infected with either organism
alone. Anti-mycoplasmal antibiotics strongly reduced H2O2 release, and
improved cell viability without blocking virus replication. These
results suggest that the simultaneous infection by HIV-1 and mycoplasma
leads to the release of H2O2, a toxic and potentially lethal metabolite,
which in vivo may contribute to HIV-1 pathogenicity.
DE Cell Line Fluorescence Human Hydrogen Peroxide/*METABOLISM HIV
Infections/*METABOLISM *HIV-1 *Mycoplasma Mycoplasma
Infections/*METABOLISM Oxidative Stress Support, Non-U.S. Gov't
T-Lymphocytes/*METABOLISM/MICROBIOLOGY/VIROLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).