Publication Date:
1999-04-30
Description:
Infection of macaques with chimeric simian-human immunodeficiency virus (SHIV) provides an excellent in vivo model for examining the influence of envelope on HIV-1 pathogenesis. Infection with a pathogenic CCR5 (R5)-specific enveloped virus, SHIVSF162P, was compared with infection with the CXCR4 (X4)-specific SHIVSF33A.2. Despite comparable levels of viral replication, animals infected with the R5 and X4 SHIV had distinct pathogenic outcomes. SHIVSF162P caused a dramatic loss of CD4+ intestinal T cells followed by a gradual depletion in peripheral CD4+ T cells, whereas infection with SHIVSF33A.2 caused a profound loss in peripheral T cells that was not paralleled in the intestine. These results suggest a critical role of co-receptor utilization in viral pathogenesis and provide a reliable in vivo model for preclinical examination of HIV-1 vaccines and therapeutic agents in the context of the HIV-1 envelope protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harouse, J M -- Gettie, A -- Tan, R C -- Blanchard, J -- Cheng-Mayer, C -- AI41945/AI/NIAID NIH HHS/ -- CA72822/CA/NCI NIH HHS/ -- R01 AI041945/AI/NIAID NIH HHS/ -- R01 CA072822/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 30;284(5415):816-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Aaron Diamond AIDS Research Center, The Rockefeller University, 455 First Avenue, 7th Floor, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10221916" target="_blank"〉PubMed〈/a〉
Keywords:
Acquired Immunodeficiency Syndrome/immunology/*virology
;
Animals
;
*CD4 Lymphocyte Count
;
CD4-CD8 Ratio
;
Chimera
;
Colon/immunology
;
HIV-1/genetics/*pathogenicity/physiology
;
Immunity, Mucosal
;
Intestinal Mucosa/immunology
;
Jejunum/immunology
;
Macaca mulatta
;
Reassortant Viruses
;
Receptors, CCR5/*metabolism
;
Receptors, CXCR4/*metabolism
;
Simian Acquired Immunodeficiency Syndrome/immunology/virology
;
Simian Immunodeficiency Virus/genetics/*pathogenicity/physiology
;
Viral Load
;
Viremia
;
Virus Replication
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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