Effect of Sickle Cell Trait on Human Immunodeficiency Virus Type 1 Infection

Area of Science:

• Hematology
• Infectious Diseases
• Genetics

Background:

• Sickle cell trait (HbAS) is common in malaria-endemic regions.
• Previous research indicates sickle cell disease (HbSS) may protect against HIV infection.
• The impact of sickle cell trait on HIV infection remains unclear.

Purpose of the Study:

• To investigate the effect of sickle cell trait on the prevalence and severity of HIV type 1 (HIV-1) infection.
• To evaluate HIV-1 viral load and CD4+ cell counts in individuals with and without sickle cell trait.

Main Methods:

• Hemoglobin genotype determined by HPLC in 1,226 HIV-1 patients in Nigeria.
• Demographic data collected, and CD4+ cell counts and HIV-1 viral load analyzed.
• Statistical analysis to compare outcomes between HbAS and HbAA genotypes.

Main Results:

• Hemoglobin genotype distribution in HIV-1 patients mirrored the general Nigerian population.
• No significant differences in viral load or CD4+ cell counts between HbAS and HbAA individuals.
• A significant interaction between gender and HbAS was observed for viral load in females, indicating potential increased severity.

Conclusions:

• Sickle cell trait does not appear to influence overall HIV-1 prevalence or severity.
• A potential association between sickle cell trait and increased HIV-1 severity in females warrants further investigation.
• Larger, prospective studies are needed to confirm these findings.