Estimating the infectivity of CCR5-tropic simian immunodeficiency virus SIVmac251 in the gut

Date

2007

Authors

Wilson, D.
Mattapallil, J.
Lay, M.
Zhang, L.
Roederer, M.
Davenport, M.

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Journal article

Citation

Journal of Virology, 2007; 81(15):8025-8029

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David P. Wilson, Joseph J. Mattapallil, Matthew D. H. Lay, Lei Zhang, Mario Roederer and Miles P. Davenport

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Abstract

CD4+ T-cell depletion during acute human immunodeficiency virus infection occurs predominantly in the gastrointestinal mucosa. Using experimental data on SIV(mac251) viral load in blood and CD4+ T cells in the jejunum, we modeled the kinetics of CD4+ T-cell infection and death and estimated the viral infectivity. The infectivity of SIV(mac251) is higher than previously estimated for SHIV89.6P infection, but this higher infectivity is offset by a lower average peak viral load in SIV(mac251). Thus, the dynamics of target cell infection and death are remarkably similar between a CXCR4- and a CCR5-tropic infection in vivo.

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Published ahead of print on 16 May 2007.

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© 2007, American Society for Microbiology. All Rights Reserved.

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