Equal plasma viral loads predict a similar rate of CD4+ T cell decline in human immunodeficiency virus (HIV) type 1- and HIV-2-infected individuals from Senegal, West Africa

The Journal of Infectious Diseases
G S GottliebN B Kiviat

Abstract

Human immunodeficiency virus (HIV) type 2 infection is characterized by slower disease progression to acquired immunodeficiency syndrome than results from HIV-1 infection. To better understand the biological factors underlying the different natural histories of infection with these 2 retroviruses, we examined the relationship between HIV RNA and DNA levels and the rate of CD4(+) T cell decline among 472 HIV-1- and 114 HIV-2-infected individuals from Senegal. The annual rate of CD4(+) T cell decline in the HIV-2 cohort was approximately one-fourth that seen in the HIV-1 cohort. However, when the analysis was adjusted for baseline plasma HIV RNA level, the rates of CD4(+) T cell decline per year for the HIV-1 and HIV-2 cohorts were similar (a rate increase of approximately 4% per year for each increase in viral load of 1 log(10) copies/mL). Therefore, plasma HIV load is predictive of the rate of CD4(+) T cell decline over time, and the correlation between viral load and the rate of decline appears to be similar among all HIV-infected individuals, regardless of whether they harbor HIV-1 or HIV-2.

Citations

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Jan 16, 2009·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Geoffrey S GottliebUNKNOWN University of Washington-Dakar HIV-2 Study Group
Oct 24, 2009·The Journal of Infectious Diseases·Margaret MayUNKNOWN Swiss HIV Cohort Study
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Jan 15, 2008·Clinical and Experimental Immunology·C MairN B Kiviat

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