Influence of exogenous interleukin-2 concentration on the isolation of human immunodeficiency virus

Area of Science:

• Virology
• Immunology

Background:

• Accurate isolation of human immunodeficiency virus (HIV) is crucial for diagnosis and research.
• Optimizing laboratory methods can improve detection rates, especially in early or low-viral-load stages of infection.

Purpose of the Study:

• To determine the optimal concentration of exogenous interleukin-2 (IL-2) for enhancing HIV isolation from plasma samples.
• To evaluate the impact of different IL-2 concentrations on HIV detection sensitivity across patient groups.

Main Methods:

• Plasma samples were analyzed for HIV isolation using varying concentrations of exogenous interleukin-2 (IL-2).
• HIV isolation rates and sensitivity were compared between 10 U/ml and 20 U/ml IL-2 groups.
• Sensitivity was assessed in patients stratified by p24 core antigen status.

Main Results:

• A statistically significant increase in HIV isolation rate was observed with 10 U/ml IL-2 compared to 20 U/ml (P = 0.015).
• Sensitivity improved from 0% to 29% in p24 core antigen-negative patients (P = 0.031).
• Sensitivity increased from 71% to 86% in p24 core antigen-positive patients (P > 0.05).

Conclusions:

• 10 U/ml of exogenous interleukin-2 (IL-2) is the optimal concentration for isolating infectious HIV from plasma.
• This concentration significantly enhances HIV detection sensitivity, particularly in individuals with low viral loads or negative p24 antigen status.