Evaluation of proviral copy number and plasma RNA level as early indicators of progression in HIV-1 infection: correlation with virological and immunological markers of disease

AIDS
C VerhofstedeJ Plum

Abstract

We compared the proviral DNA level in peripheral blood mononuclear cells (PBMC), viral RNA level in plasma, presence of p24 antigen in serum, viral phenotype, and results of immunological markers of HIV-1 disease. Consecutive samples of 62 HIV-1-infected patients, representing all stages of disease were tested for proviral DNA in PBMC and viral RNA in plasma using a semi-quantitative limiting dilution polymerase chain reaction (PCR). The presence of a syncytium-inducing (SI) phenotype was assessed after direct cocultivation of patient PBMC with MT-2 cells. Results of the quantitative PCR and the MT-2 coculture were correlated with the clinical stage of the disease, with the number of CD4+ T cells, and with the results of other virological and immunological markers, such as the level of p24 antigen, beta 2-microglobulin (beta 2M) and neopterin. Significant differences were observed between the results for asymptomatic and symptomatic patients for all markers under study. In the group of asymptomatic patients with a CD4+ T-cell count > 200 x 10(6)/l, patients with high amounts of proviral DNA had significantly higher amounts of beta 2M, neopterin and viral RNA, they were more frequently p24 antigen-positive and harboured more fre...Continue Reading

Citations

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