[Studies on the determinants and changes related to the natural CD4(+) T cell counts among antiretroviral treatment-naive HIV/AIDS patients in Dehong prefecture, Yunnan province].

Objective: To explore the determinants and changes of CD4(+) T cell counts among antiretroviral treatment-naive HIV/AIDS patients in Dehong prefecture, Yunnan province.

Methods: A retrospective cohort analysis was conducted on HIV-infected local residents, being reported during 1989 through May 2010, in Dehong prefecture. The patients had received at least two CD4(+) T cell counting tests before receiving the antiretroviral treatment (ART). Difference between the first and the last CD4(+) T cell counts was calculated and described. Logistic regression analysis was conducted to examine the determinants of significant depletion of CD4(+) T cell counts among them.

Results: A total of 4487 HIV/AIDS patients were included in the study. The change of CD4(+) T cell counts between the first and the last CD4(+) T cell count tests had a median of -2.0 cells/µl in month (IQR: -8.2 - 3.6) and was significantly associated with socio-demographic characteristics, HIV transmission mode, the first or baseline CD4(+) T cell counts and the time interval between the first and the last CD4(+) T cell counting tests etc. About 60.0% (2693/4487) of the HIV/AIDS patients had deletions of CD4(+) T cell counts, and 31.2% (1400/4487) had significant (≥ 30%) deletions of CD4(+) T cell counts. Results from the multiple logistic regression analysis indicated that age, ethnicity, marital status, HIV transmission mode, the first CD4(+) T cell counts and the interval between the first and the last CD4(+) T cell counting tests were significantly associated with the significant depletion of CD4(+) T cell counts.

Conclusion: The changing rate of CD4(+) T cell count among ART-naive local HIV-infected patients in Dehong prefecture, Yunnan province was relatively slow. However, substantial proportion of them showed significant decreases of CD4(+) T cell counts, which was determined by many factors. More efforts were needed to systematically and consistently follow-up those HIV-infected patients and measure their CD4(+) T cell counts in China, in order to instantaneously monitor the disease progression, and the initiation of ART, if necessary.