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AIDS-like immunologic alterations in clinically unaffected drug users.
American Journal of Clinical Pathology
|September 1, 1985
Summary
Intravenous drug users (IVDUs) show reduced helper/suppressor T-cell ratios, indicating immune system alterations even without acquired immune deficiency syndrome (AIDS). Human leukocyte antigen (HLA)-DR5 may influence susceptibility in these individuals.
Area of Science:
- Immunology
- Virology
- Public Health
Background:
- Intravenous drug users (IVDUs) are at high risk for infections.
- Acquired immune deficiency syndrome (AIDS) is a major concern in this population.
- Subtle immune changes may precede overt disease.
Purpose of the Study:
- To evaluate peripheral blood lymphocyte subpopulations (PBLS) and HLA-DR phenotype in IVDUs without AIDS.
- To identify immune alterations associated with lymphadenopathy syndrome (LAS) in IVDUs.
- To explore the potential role of HLA-DR5 in immune susceptibility.
Main Methods:
- Analysis of PBLS and HLA-DR phenotype in 30 IVDUs and controls.
- Comparison of immune parameters between LAS-positive and LAS-negative IVDU subgroups.
- Statistical analysis to determine significant differences.
Main Results:
- Significant reduction in helper/suppressor T-cell ratio in IVDUs compared to controls.
- IVDUs without AIDS but with LAS showed more pronounced PBLS modifications.
- Increased frequency of DR5 in LAS-positive IVDUs.
Conclusions:
- AIDS-like laboratory alterations are present in clinically unaffected IVDUs.
- Immune dysregulation occurs in IVDUs prior to AIDS diagnosis.
- HLA-DR5 may play a role in individual susceptibility to immune alterations.