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Chemokine-Independent In Vitro Resistance to Human Immunodeficiency Virus (HIV-1) Correlating with Low Viremia in Long-Term and Recently Infected HIV-1-Positive Persons
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Chemokine-Independent In Vitro Resistance to Human Immunodeficiency Virus (HIV-1) Correlating with Low Viremia in Long-Term and Recently Infected HIV-1-Positive Persons
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Chemokine-Independent In Vitro Resistance to Human Immunodeficiency Virus (HIV-1) Correlating with Low Viremia in Long-Term and Recently Infected HIV-1-Positive Persons
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Journal Article
Chemokine-Independent In Vitro Resistance to Human Immunodeficiency Virus (HIV-1) Correlating with Low Viremia in Long-Term and Recently Infected HIV-1-Positive Persons
1997
Overview
Chemokines have been implicated as protective factors against human immunodeficiency virus (HIV) infection, competing for binding to receptors that also function as coreceptors for HIV. In this study of HIV-positive donors, peripheral blood mononuclear cell (PBMC) culture resistance to endogenous and exogenous HIV correlated with low plasma viremia and high in vitro RANTES production. However, resistant cells were not rendered susceptible by neutralization of C-C chemokines, and addition of C-C chemokines did not consistently suppress endogenous virus or exogenous HIV-1MN. In contrast, CD8 T cell depletion markedly decreased the frequency of resistant cultures without reducing C-C chemokine production. Among newly infected persons, half exhibited phenotype switching from preinfection susceptibility to postinfection resistance, suggesting that genetically predetermined constitutive cytokine production or allelic receptor expression are not generally responsible for in vitro resistance and nonprogression.
Publisher
The University of Chicago Press,University of Chicago Press,Oxford University Press
