Evaluation of CD4 counts and percentages in the HIV infected Indian population

Area of Science:

• Immunology
• Virology
• Public Health

Background:

• Human Immunodeficiency Virus (HIV) infection, particularly subtype C, remains a global health challenge.
• Accurate monitoring of CD4+ T-cell counts and percentages is crucial for assessing HIV disease progression and guiding treatment.
• Variations in CD4+ T-cell metrics can impact clinical management and patient outcomes.

Purpose of the Study:

• To evaluate absolute CD4+ T-cell counts and percentages in HIV-1 subtype C infected patients.
• To identify potential discordance between CD4+ counts and percentages in different stages of HIV infection.
• To assess the clinical implications of these findings in a tertiary care setting in northern India.

Main Methods:

• A cross-sectional study involving 377 HIV-1 seropositive subjects.
• CD4+ T-cell counts and percentages were measured using FACS Calibur flow cytometry.
• Dual-color immunophenotyping and CellQuest software were utilized for sample analysis.

Main Results:

• Discordance between CD4+ counts and percentages was observed in a significant proportion of patients.
• Higher discordance rates were noted in early-stage HIV infection (Group A: 37.2%) compared to later stages (Group B: 31.6%, Group C: 28.8%).
• In cases of discordance, CD4+ counts often remained within the normal range, while percentages were severely depressed.

Conclusions:

• The study highlights the importance of evaluating both CD4+ T-cell counts and percentages in HIV-1 subtype C infected individuals.
• Discordance, particularly in early stages, may necessitate careful interpretation for accurate disease staging and treatment decisions.
• Further research is warranted to understand the underlying mechanisms and clinical impact of this discordance in the Indian population.