title: Antiviral antibodies in the sera of homosexual men: correlation with their lifestyle and drug usage.
abstract: Healthy homosexual men between the ages of 21 and 65 years, from the Washington, DC (n = 162), and New York City (n = 89) areas, were studied for antibodies in the serum against cytomegalovirus (CMV), herpes simplex virus (HSV) types 1 and 2, and Epstein Barr virus (EBV) viral capsid antigen (VCA). CMV-specific antibodies were assayed by enzyme-linked immunosorbent assay (ELISA), anti-HSV-1 and -2 antibodies were measured by indirect hemagglutination (IHA), and antibodies to EBV VCA were measured by the immunofluorescence assay. Antibodies to human T lymphotrophic virus III (HTLV-III) were detected by ELISA and Western blot procedures. T lymphocytes were enumerated using OKT4 monoclonal antibody. Healthy male volunteer blood donors (n = 90) matched for age range and race proportions were used as controls. The percentage of seropositive individuals in the homosexual group was higher (90-98%) for all the viruses tested than in the control group (47-87%). Comparisons of the geometric mean titers, expressed as reciprocal serum dilutions, of seropositive individuals in homosexual (H) vs control (C) group were as follows: CMV-IgG (ELISA) H = 1:794, C = 1:68; HSV-1 (IHA) H = 1:248, C = 1:14; HSV-2 (IHA) H = 1:56, C = 1:17; EBV-VCA (IFA) H = 1:385, C = 1:131. The homosexual group also showed a higher frequency of individuals with elevated titers than the control group. The CMV IgM antibody was prevalent in 17.7% of the homosexual group and 5% of the control group; arithmetic means for ELISA values for CMV IgM were 0.207 for the homosexual group and 0.05 for the control group. In the homosexual group, the anti-CMV antibody titers increased with age (P = 0.01) and with numbers of sex partners (P = 0.06). Both anti-HSV-1 and anti-HSV-2 antibodies correlated with the number of sex partners (P = 0.04 and P = 0.05, respectively). Neither age nor partner number correlated with response to EBV, and no particular sex act was related to the EBV VCA titer level. HTLV-III seropositivity was associated with higher herpes virus group antibody titers, probably because of life style cofactors. Among the HTLV-III-seropositive subjects, those with less than or equal to 400 T-helper lymphocytes/mm3 had lower antibody titers than those with greater than 400 T-helper lymphocytes/mm3 counts, suggesting an impaired immune response secondary to immunosuppression.
mesh_terms: D000328:Adult; D000368:Aged; D000914:Antibodies, Viral / Q000032:analysis*; D000956:Antigens, Viral / Q000276:immunology; D036022:Capsid Proteins; D003587:Cytomegalovirus / Q000276:immunology*; D004219:District of Columbia; D004797:Enzyme-Linked Immunosorbent Assay; D006678:HIV / Q000276:immunology; D006386:Hemagglutination Tests; D006566:Herpesviridae Infections / Q000453:epidemiology; D004854:Herpesvirus 4, Human / Q000276:immunology*; D006716:Homosexuality; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D008297:Male; D008875:Middle Aged; D009519:New York City; D011897:Random Allocation; D012725:Sexual Behavior; D018139:Simplexvirus / Q000276:immunology*; D019966:Substance-Related Disorders / Q000453:epidemiology
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D036022:Capsid Proteins; C041788:Epstein-Barr viral capsid antigen; D007074:Immunoglobulin G; D007075:Immunoglobulin M