Dynamics of CD4 cell count among HIV-infected individuals in Lagos, Nigeria
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Published on: October 31, 2010
Babatunde O Motayo1, Babatunde A Olusola2, Adedayo O Faneye2
1a Microbiology Unit , Pathology Department, Federal Medical Center , Abeokuta , Nigeria.
Insights
Many HIV patients in Nigeria experience poor CD4 T-cell recovery after 9 months of antiretroviral therapy (ART). Early HIV detection programs are recommended to improve immune restoration outcomes.
Area of Science:
- Immunology
- Infectious Diseases
- Public Health
Background:
- Human immunodeficiency virus (HIV) infection causes progressive CD4 T-cell loss.
- Antiretroviral therapy (ART) can inhibit HIV progression and restore immune function.
- Understanding CD4 T-cell recovery dynamics is crucial for managing HIV in diverse populations.
Purpose of the Study:
- To investigate the dynamics of CD4 T-cell recovery among HIV patients in Lagos, Nigeria.
- To identify factors influencing CD4 T-cell reconstitution in HIV-infected individuals.
- To assess the effectiveness of ART in achieving immune recovery.
Main Methods:
- Prospective study of 213 HIV-positive individuals in Lagos, Nigeria, followed for 9 months.
- CD4 T-cell counts analyzed by flow cytometry at enrollment and every 3 months.
- Kaplan-Meier survival analysis used to compare CD4 recovery based on ART status, age, and time to diagnosis.
Main Results:
- Significant difference in CD4 counts between ART-naïve and ART-experienced individuals (P < 0.001).
- Approximately 50% of ART-experienced patients showed poor CD4 reconstitution, failing to reach 500 cells/µl after 9 months.
- Longer intervals between HIV infection and therapy initiation were associated with poorer CD4 restoration.
Conclusions:
- A substantial proportion of HIV patients in Nigeria may not achieve adequate immune recovery with current ART protocols.
- Immunological nonresponse is a significant concern requiring further investigation and classification in the Nigerian context.
- Early HIV detection and intervention programs are recommended to improve treatment outcomes and immune reconstitution.
Abstract:
Human immunodeficiency virus (HIV) infection leads to progressive loss of CD4 T cells. Antiretroviral therapy has been able to inhibit this process, resulting in significant level of immune recovery and function. Our aim is to investigate the dynamics of CD4 recovery among HIV patients in Lagos, Nigeria. A total of 213 HIV-positive individuals were enrolled between October 2007 and May 2008, and followed up for 9 months based on CD4 count. CD4 analysis was done by flow cytometry at enrollment and after every 3 months. Data were grouped according to age range, antiretroviral treatment (ART), and time between infection and diagnosis. Kaplan-Meier survival analysis was used for data analysis. There was a significant difference in CD4 count between antiretroviral (ART) naïve and ART experienced subjects (P < 0.001). About 50% of the ART experienced population was identified to show poor CD4 reconstitution unable to achieve a CD4 of 500 cells/µl after 9 months of therapy. Time interval between infection and therapy was also identified to contribute to poor CD4 restoration. Further studies need to be done to classify immunological nonresponders among HIV patients in Nigeria. We also recommend introduction of programs that will facilitate early detection of HIV infection.
