alexa Usefulness of total lymphocyte count in monitoring highly active antiretroviral therapy in resource-limited settings.
Infectious Diseases

Infectious Diseases

Journal of AIDS & Clinical Research

Author(s): Badri M, Wood R, Badri M, Wood R

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Abstract OBJECTIVE: To assess the usefulness of total lymphocyte count (TLC) for monitoring HIV-infected patients receiving highly active antiretroviral therapy. DESIGN Observational cohort study. METHODS: Correlation between difference (Delta) from baseline at week 4, 8, 12 and 48 in TLC, CD4 cell count and viral load was determined in patients initiating HAART in phase III clinical trials between 1995 and 2001 at the HIV Clinical Research Unit, Somerset Hospital, Cape Town. RESULTS: The study included 266 patients. At weeks 4, 8, 12 and 48, median increase in TLC was 30, 52, 139 and 219 cells x 10 /l, median increase in CD4 cell count was 8, 48, 88, and 145 cells x 10 /l, and median decrease in viral load was -1.6, -2.2, -2.5 and -2.7 log copies/ml, respectively. The correlation between all pairs of DeltaTLC and DeltaCD4 cell counts was significant (r, 0.61; P < 0.0001), but between DeltaTLC and Delta viral load it was not (r, -0.014; P= 0.73). However, the correlation between median viral load reduction and median increase in both DeltaCD4 cell count (r, -0.96; P< 0.0001) and DeltaTLC (r, -0.89; P< 0.0001) was significant. The slope of DeltaCD4 cell count was [52.493 + 0.14(DeltaTLC)]. Sensitivity and specificity of an increase or decrease from baseline in TLC for similar trend in CD4 cell count during follow-up were 83.4\% and 87.3\% respectively. CONCLUSION: TLC correlated well with changes in CD4 cell count and at a group level with viral load changes. TLC may have a role in inexpensive monitoring of the immunological response to highly active antiretroviral therapy in a resource-constrained setting. This article was published in AIDS and referenced in Journal of AIDS & Clinical Research

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