T Cell Telomere Length in HIV-1 Infection: No Evidence for Increased CD4 T Cell Turnover CDC Daily UpdateImportant note: Information in this article was accurate in 1996. The state of the art may have changed since the publication date.

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T Cell Telomere Length in HIV-1 Infection: No Evidence for Increased CD4 T Cell Turnover

Science (11/29/96) Vol. 274, No. 5292, P. 1543
Wolthers, Katja C.; Wisman, G. Bea A.; Otto, Sigrid A.; et al.


Abstract: HIV-1 infection results in the progressive loss of CD4 T cells, a gradual increase in CD8 T cells, and a decline in immune function. CD4 T-cell count starts to drops at an accelerated rate about one-and-a-half years to two years before the onset of AIDS. One theory holds that the rapid CD4 T cell turnover caused by HIV infection eventually results in the exhaustion of the regenerative capacity of the immune system. Frank Miedema, of the Netherlands Red Cross Blood Transfusion Service, and colleagues, used an analysis of telomeric terminal restriction fragment length to measure the turnover of CD4 cells, compared to that of CD8 cells, over the course of HIV-1 infection. They found that turnover increased in CD8 T cells, but remained stable in CD4 T cells. The authors suggest that increased CD4 T cell counts after drug therapy may not be due to repopulation by new cells but may represent a redistribution of activated memory CD4 T cells


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