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1996-02-27
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Document 0104
DOCN M9630104
TI Relationship between tumor necrosis factor alpha and feline
immunodeficiency virus expressions.
DT 9603
AU Kraus LA; Bradley WG; Engelman RW; Brown KM; Good RA; Day NK; Department
of Medical Microbiology and Immunology, University of; South Florida,
Tampa 33612, USA.
SO J Virol. 1996 Jan;70(1):566-9. Unique Identifier : AIDSLINE MED/96099471
AB The presence of feline immunodeficiency virus (FIV) proviral DNA,
expression of FIV p26 core protein, and production of tumor necrosis
factor alpha (TNF-alpha) were assessed in sequential biopsies of spleen
and lymph node sections, of mononuclear cells of the peripheral blood,
and of the serum of specific-pathogen-free cats during the acute phase
of FIV infection. A temporal relationship between TNF-alpha production
and FIV p26 expression was noted. Two months following FIV infection,
and preceding the detection of FIV viremia, levels of TNF-alpha in serum
increased significantly (P = 0.04), and they remained elevated during
FIV viremia in the third month postinfection. Immunoprecipitates
representing expression of TNF-alpha and of FIV p26 were localized in
common foci of lymph nodes of FIV-infected cats during this period of
active viremia. With the advent of anti-FIV antibodies, circulating
levels of TNF-alpha and p26 antigen and expression of TNF-alpha and p26
in the lymph nodes decreased during the fifth month postinfection, and
p26 production became undetectable. With clearance of viremia, burden of
proviral DNA in peripheral blood mononuclear cells became reduced (P =
0.041), with provirus remaining integrated principally within lymph
nodes (P = 0.046). During aviremia, p26 expression was undetectable in
any tissue but remained inducible in vitro. During acute FIV infection,
TNF-alpha production and p26 expression are intimately linked.
DE Animal Antibodies, Viral/BLOOD Base Sequence Cats DNA, Viral Feline
Acquired Immunodeficiency Syndrome/*IMMUNOLOGY Immunodeficiency Virus,
Feline/*IMMUNOLOGY Lymph Nodes/CYTOLOGY/IMMUNOLOGY Molecular Sequence
Data Proviruses/IMMUNOLOGY Spleen/CYTOLOGY/IMMUNOLOGY Support,
Non-U.S. Gov't Support, U.S. Gov't, P.H.S. Tumor Necrosis
Factor/*BIOSYNTHESIS Viral Core Proteins/BIOSYNTHESIS/IMMUNOLOGY
JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).