Antibody isotypes in urethral swabs of symptomatic and asymptomatic men infected with Trichomonas vaginalis.
Trichomoniasis may be asymptomatic or symptomatic in both sexes. The outcome of infection depends on the virulence factors of T. vaginalis, but these factors remain unclear. Genetic variability of the isolates and the host's immune response are likely to be key factors in that respect. Symptomatic and asymptomatic males infected with T. vaginalis were compared regarding the differences in antibody subclasses response in the urethral samples. In symptomatic cases there was a significant elevation in IgM, IgG1 & IgG2b levels in urethral samples, and a little, non-significant rise in IgG2a levels. However, there were no statistically significant differences between levels of IgA, IgG3 & IgG4. The results showed that specific IgG1 & IgM and to a lesser extent IgG2 may be involved in established symptomatic trichomoniasis in men, compared to asymptomatic ones.
Imam
Naglaa F A
NF
Department of Parasitology, Faculty of Medicine, Cairo University, Cairo, Egypt.
Eassa
Ahmed H A
AH
Shoeib
Eman Y S
EY
Abo-Raia
Gamal Y S
GY
D000328:Adult; D000818:Animals; D000913:Antibodies, Protozoan / Q000032:analysis / Q000097:blood* / Q000145:classification*; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis / Q000097:blood / Q000145:classification; D007132:Immunoglobulin Isotypes; D007075:Immunoglobulin M / Q000032:analysis / Q000097:blood / Q000145:classification; D008297:Male; D014245:Trichomonas Infections / Q000276:immunology* / Q000469:parasitology; D014246:Trichomonas vaginalis / Q000276:immunology* / Q000472:pathogenicity; D014521:Urethra / Q000469:parasitology*; D014774:Virulence
D000913:Antibodies, Protozoan; D007074:Immunoglobulin G; D007132:Immunoglobulin Isotypes; D007075:Immunoglobulin M