Related Experiment Videos
T-lymphocyte subsets in lymph nodes from homosexual men
JAMA
|September 9, 1983
Summary
Homosexual men with Kaposi's sarcoma or lymphadenopathy exhibit significantly reduced T-helper/suppressor cell ratios in both blood and lymph nodes. This indicates a profound cellular immunodeficiency, with an increase in suppressor cells within lymph node regions.
Area of Science:
- Immunology
- Oncology
- Virology
Background:
- Homosexual men were observed to have an increased incidence of opportunistic infections and certain malignancies.
- This suggested an underlying immunodeficiency within this population.
Purpose of the Study:
- To investigate the T-lymphocyte subset profiles in homosexual men with lymphadenopathy or Kaposi's sarcoma.
- To compare these profiles with those of healthy controls.
Main Methods:
- Blood and lymph node specimens were collected from homosexual men and controls.
- Monoclonal antibodies were used for T-lymphocyte subset identification via cytofluorometry and immunoperoxidase techniques.
Main Results:
- Homosexual men with Kaposi's sarcoma showed a blood T-helper/suppressor ratio of 0.7 (controls: 2.1).
- Homosexual men with lymphadenopathy had a blood ratio of 0.6.
- Lymph nodes from affected individuals displayed reduced T-helper/suppressor ratios and an accumulation of suppressor cells in specific regions.
Conclusions:
- Homosexual men with Kaposi's sarcoma or lymphadenopathy present with a marked cellular immunodeficiency.
- An imbalance in T-lymphocyte subsets, particularly an increase in suppressor cells, is characteristic of this condition.