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M9490757.TXT
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1994-09-24
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Document 0757
DOCN M9490757
TI Impaired alveolar macrophage accessory cell function and reduced
incidence of lymphocytic alveolitis in HIV-infected patients who smoke.
DT 9411
AU Twigg HL 3rd; Soliman DM; Spain BA; Department of Medicine, Indiana
University Medical Center,; Indianapolis 46202.
SO AIDS. 1994 May;8(5):611-8. Unique Identifier : AIDSLINE MED/94338596
AB OBJECTIVE: To determine the effects of smoking on alveolar macrophage
(AM) accessory cell (AC) function and the incidence of lymphocytic
alveolitis in asymptomatic HIV-infected individuals. METHODS: AM AC
function in smoking and nonsmoking HIV-positive volunteers was measured
in concanavalin A and pokeweed mitogen assays. Mitogen-induced AM-T-cell
adherence was determined. AM cytokine secretion was analyzed by
interleukin (IL)-6 bioassay and IL-1 enzyme-linked immunosorbent assay
(ELISA). The incidence of lymphocytic alveolitis in both groups was
determined. RESULTS: AM from smokers were significantly poorer AC than
AM from nonsmokers. Though AM-T-cell adherence was unaffected by
smoking, IL-1 and IL-6 secretion was significantly impaired. Lymphocytic
alveolitis was significantly less common in HIV-infected smokers.
CONCLUSION: Smoking reduces AM AC function in HIV-infected individuals,
probably by impairing secretion of cytokines important in T-cell
proliferation. This may explain the decreased incidence of lymphocytic
alveolitis in HIV-infected people who smoke.
DE Adult Antigen-Presenting Cells/*IMMUNOLOGY/PATHOLOGY Bronchoalveolar
Lavage Fluid Cell Adhesion Cytokines/DEFICIENCY Female Human HIV
Infections/*COMPLICATIONS/IMMUNOLOGY Incidence Lung Diseases/*ETIOLOGY
Lymphocyte Transformation Macrophages, Alveolar/*IMMUNOLOGY/PATHOLOGY
Male Smoking/*IMMUNOLOGY Support, Non-U.S. Gov't Support, U.S. Gov't,
P.H.S. T-Lymphocytes, Cytotoxic/IMMUNOLOGY/PATHOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).