The effect of vaginal candidiasis on the shedding of human immunodeficiency virus in cervicovaginal secretions

Abstract

The purpose of this study was to evaluate the influence of symptomatic vulvovaginal candidiasis on the shedding of HIV-1 in cervicovaginal secretions of HIV-1-infected women. We obtained paired blood and cervicovaginal lavage samples from 66 HIV-infected women with symptomatic vulvovaginal candidiasis, and 249 HIV-infected control patients without genital infection. HIV-1 RNA in plasma, proviral HIV-1 DNA, HIV-1 RNA transcripts, and cell-free HIV-1 RNA in cervicovaginal secretions were quantitatively evaluated by competitive polymerase chain reaction (cPCR) and reverse transcriptase PCR (cRT-PCR). We used logistic regression on ordered data to assess the influence of vulvovaginal candidiasis on the HIV-1 load in cervicovaginal secretions adjusting for potential confounders. Overall, the amount of HIV-1 RNA in plasma was significantly correlated with HIV-1 DNA (Spearman rank 0.153 +/- 0.059, P = .006), HIV-1 RNA transcripts (Spearman rank 0.169 +/- 0.058, P = .003), and cell free HIV-1 RNA (Spearman rank 0.185 +/- 0.059, P = .001) load in cervicovaginal secretion. Forty-eight out of 182 (26.4%) patients who tested negative for HIV-1 RNA in plasma were positive for HIV-DNA in their cervicovaginal secretions. In logistic regression analysis vulvovaginal candidiasis was significantly associated with increasing loads of HIV-1 RNA transcripts (Odds ratio [OR] 1.97, 95% CI 1.09-3.57, P = .025) and cell free HIV-1 RNA (OR 2.03, 95% CI 1.10-3.73, P = .02) in cervicovaginal secretions. In HIV-infected women, vulvovaginal candidiasis is associated with an increased number of copies of cell-associated and cell-free HIV-1 RNA in cervicovaginal secretions.