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M9650122.TXT
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1996-03-09
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Document 0122
DOCN M9650122
TI Human immunodeficiency virus type 1 (HIV-1)-seronegative injection drug
users at risk for HIV exposure have antibodies to HLA class I antigens
and T cells specific for HIV envelope.
DT 9605
AU Beretta A; Weiss SH; Rappocciolo G; Mayur R; De Santis C; Quirinale J;
Cosma A; Robbioni P; Shearer GM; Berzofsky JA; Villa ML; Siccardi AG;
Clerici M; Department of Biology and Technology, S. Raffaele Scientific;
Institute, Milan, Italy.
SO J Infect Dis. 1996 Feb;173(2):472-6. Unique Identifier : AIDSLINE
MED/96162112
AB The question of whether persistently seronegative persons at high risk
for human immunodeficiency virus type 1 (HIV-1) infection exhibit
HIV-1-specific T cell responses and antibodies to HIV-1 envelope
epitopes shared with selected HLAs was assessed. These antibodies are
not detectable by conventional serologic methods. Envelope-specific
helper T (Env-Th) cell responses and antibodies specific for the HIV/HLA
epitopes were studied in 21 HIV-1-negative injection drug users (IDUs).
HIV/HLA antibodies were detected in 7 (33.3%) of 21 IDUs and 4 (4.3%) of
94 low-risk controls. Env-Th cell responses were detected in 16 (76.2%)
of 21 IDUs and in 2 (3.1%) of 65 low-risk controls. All HIV/HLA
antibody-positive IDUs also had Env-Th cell responses. These findings
confirm the presence of HIV-1-specific immunity in conventionally
seronegative individuals. Further characterization of these responses
could provide the basis for new preventive strategies.
DE Histocompatibility Antigens Class I/*IMMUNOLOGY Human HIV
Antibodies/*ANALYSIS HIV Antigens/IMMUNOLOGY HIV
Infections/*IMMUNOLOGY HIV Seronegativity/*IMMUNOLOGY
HIV-1/*IMMUNOLOGY Interleukin-2/BIOSYNTHESIS Lymphocyte
Transformation/IMMUNOLOGY Risk Factors Substance Abuse,
Intravenous/*IMMUNOLOGY Support, Non-U.S. Gov't T-Lymphocytes,
Cytotoxic/IMMUNOLOGY T-Lymphocytes, Helper-Inducer/*IMMUNOLOGY Viral
Envelope Proteins/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).