BETA-2-MICROGLOBULIN LEVELS IN HUMAN-IMMUNODEFICIENCY VIRUS INFECTED SUBJECTS

Area of Science:

• Immunology
• Virology
• Clinical Diagnostics

Background:

• Beta-2 microglobulin (β-2M) is a protein found on the surface of lymphocytes.
• Elevated β-2M levels are associated with increased cell turnover and immune activation.
• Its role as a prognostic marker in HIV infection requires further investigation.

Purpose of the Study:

• To evaluate beta-2 microglobulin (β-2M) levels in HIV-infected individuals across different clinical stages.
• To determine if β-2M can serve as a surrogate prognostic marker in HIV disease progression.
• To compare the utility of β-2M measurement with other HIV markers like p24 antigen and CD4 counts.

Main Methods:

• Competition enzyme immunoassay was used to measure β-2M levels.
• Study included 44 HIV-infected subjects in three clinical stages and 25 healthy controls.
• β-2M levels were analyzed in asymptomatic HIV, persistent generalized lymphadenopathy (PGL), and acquired immunodeficiency syndrome (AIDS) groups.

Main Results:

• Mean β-2M levels were significantly higher in HIV-infected subjects (11.41 mg/L) compared to healthy controls (1.28 mg/L).
• Levels increased with disease severity: asymptomatic (2.69 mg/L), PGL (12.14 mg/L), and AIDS (39.29 mg/L).
• β-2M demonstrated potential advantages over p24 antigen and CD4 counts for prognostication.

Conclusions:

• β-2M levels are significantly elevated in HIV infection and correlate strongly with disease progression.
• β-2M is a valuable surrogate serological marker for predicting HIV disease progression.
• Measuring β-2M offers a useful alternative or adjunct to existing HIV monitoring methods.