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American Journal of Epidemiology Vol. 121, No. 5: 629-636
Copyright © 1985 by The Johns Hopkins University School of Hygiene and Public Health
ORIGINAL CONTRIBUTIONS |
DECREASED HELPER T LYMPHOCYTES IN HOMOSEXUAL MEN
I. SEXUAL CONTACT IN HIGH-INCHDENCE AREAS FOR THE ACQUIRED IMMUNODEFICIENCY SYNDROME
1 Environmental Epidemiology Branch, Division of Cancer Etiology, National Cancer Institute Bethesda, MD
2 Laboratory of Human Carcinogenesis, Division of Cancer Etiology, National Cancer Institute Bethesda, MD
3 Biometry Branch, Division of Cancer Etiology, National Cancer Institute Bethesda, MD
4 Department of Surgery, Uniformed Services Uni versity of the Health Sciences Bethesda, MD
5 Private practice Washington, DC
6 Private practice New York, NY
Reprint requests to Dr. James J. Goedert, Environ mental Epidemiology Branch, National Cancer Institute, Landow Building, Room 3C-19, Bethesda, MD 20205.
Received for publication June 19, 1984. Revision received September 28, 1984. In June 1982, sexual and other behavioral patterns were examined in 245 homosexual men in relationship to T-lymphocyte phenotypes that are character istic of the acquired Immunodeficiency syndrome (AIDS). Mean helper T-cell counts in New York City (579±32 cells/mm2 and Washington, DC, homosexual men with sexual contacts In areas at high risk (endemic) for AIDS (567 ± 24 cells/mm3) were significantly lower than in Washington, DC, residents without such contacts (672 ± 36 cells/mm3, p = 0.04 by analysis of variance). Helper T cell counts in the Washington men were inversely correlated with a greater number of endemic-area homosexual contacts (p = 0.005), even after adjustment for multiple confounding variables (p = 0.02). The 31 Washington men with more than 15 endemic-area parthers had a mean helper T-cell count of 517 ± 44 cells/ mm3 and 12 of those 31 men had helper T-cell counts <400 cells/mm3. AIDS patients are known to have a marked reduction in the number and function of helper T-lymphocytes. The data suggest that deficits of helper T lymphocytes can be acquired by homosexual contact with men In cities where AIDS is common. This supports the hypotheses that low helper T-cell counts may be caused by a sexually transmissible agent and that frequent homosexual exposure to residents of high-risk areas for AIDS may be an important means of spread of this agent.
homosexuality; immunity; cellutar immunologic deficiency syndromes regres sion analysis; retrovlrus infections
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