title: Growth patterns and antigenic analysis of Egyptian Trichomonas vaginalis isolates.
abstract: The vaginal washouts from symptomatic and asymptomatic patients were examined by wet mount examination and culture on modified TYM medium. Among the 320 cases examined, 10 were positive for T. vaginalis trophozoites by wet mount examination and culture. Modified TYM medium proved very satisfactory for isolation as well as maintenance of the 10 T. vaginalis isolates. Comparison between the growth patterns of all isolates, by counting the number of viable organisms every 24 hours for 7 days, showed that there is a wide variability in the growth characteristics, as regards lengths of log phase, growth peaks reached, generation times, division rate and number of divisions. Antigenic differentiation of the 10 T. vaginalis isolates through SDS-PAGE demonstrated a total of 34 bands using 10% resolution gel. The bands ranged in molecular weight from 12 to 189 KDa. Most of the bands were common among several isolates while isolate 2 appeared different than other isolates with two characteristic bands; one at 136 KDa and the other at 25 KDa. Also, isolates 4 and 8 had characteristic bands at 163 KDa and 189 KDa respectively.
authors.affiliation: Department of Parasitology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt.
authors.forename: Laila M
authors.initials: LM
authors.lastname: El-Okbi
authors.forename: Mohamed
authors.initials: M
authors.lastname: Arafa
authors.forename: Mohamed S
authors.initials: MS
authors.lastname: Salama
authors.forename: Salwa M F
authors.initials: SM
authors.lastname: Abou El-Seoud
authors.forename: Anhar A
authors.initials: AA
authors.lastname: Mohamad
authors.forename: Rania A
authors.initials: RA
authors.lastname: Tawfik
mesh_terms: D000818:Animals; D000953:Antigens, Protozoan / Q000032:analysis*; D005260:Female; D006801:Humans; D014245:Trichomonas Infections / Q000469:parasitology*; D014246:Trichomonas vaginalis / Q000254:growth & development* / Q000276:immunology
chemical_list: D000953:Antigens, Protozoan