NDLI: Lymphoid organs function as major reservoirs for human immunodeficiency virus.

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Lymphoid organs function as major reservoirs for human immunodeficiency virus.

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Lymphoid organs function as major reservoirs for human immunodeficiency virus.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Butini, L. Graziosi, C. Schnittman, S. M. Kotler, D. P. Pantaleo, G. Fauci, A. S. Pizzo, P. A.
Description	Author Affiliation: Pantaleo G ( Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.);
Abstract	The total number of human immunodeficiency virus type 1 (HIV-1)-infected circulating CD4+ T lymphocytes is considered to be a reflection of the HIV burden at any given time during the course of HIV infection. However, the low frequency of HIV-infected circulating CD4+ T lymphocytes and the low level or absence of plasma viremia in the early stages of infection do not correlate with the progressive immune dysfunction characteristic of HIV infection. In this study, we have determined whether HIV-infected circulating CD4+ T lymphocytes are a correct reflection of the total pool of HIV-infected CD4+ T cells (i.e., HIV burden). To this end, HIV burden has been comparatively analyzed in peripheral blood and lymphoid tissues (lymph nodes, adenoids, and tonsils) from the same patients. The presence of HIV-1 DNA in mononuclear cells isolated simultaneously from peripheral blood and lymphoid tissues of the same patients was determined by polymerase chain reaction amplification. We found that the frequency of HIV-1-infected cells in unfractionated or sorted CD4+ cell populations isolated from lymphoid tissues was significantly higher (0.5-1 log10 unit) than the frequency in peripheral blood. Comparable results were obtained in five HIV seropositive patients in the early stages of disease and in one patient with AIDS. These results demonstrate that a heavy viral load does reside in the lymphoid organs, indicating that they may function as major reservoirs for HIV. In addition, the finding of a heavy viral load in the lymphoid organs of patients in the early stages of disease may explain the progressive depletion of CD4+ T lymphocytes and the immune dysfunction associated with the early stages of HIV infection.
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	21
Volume Number	88
Language	English
Publisher	National Academy of Sciences
Publisher Date	1991-12-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Acquired Immunodeficiency Syndrome Microbiology HIV Seropositivity Lymphoid Tissue CD4-Positive T-Lymphocytes Child, Preschool DNA, Viral HIV Core Protein P24 Blood Lymph Nodes Polymerase Chain Reaction Multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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