Trichomonas Vaginalis Flashcards
What is the host for T. Vaginalis ?
Man
What is the mode of infection?
Vaginal sexual intercourse
What is the multiplication?
Binary longitudinal fission
What is the habitat for T. Vaginalis for female and male?
Female: vagina
Male: urethra, epididymis, prostate
How does it move (motility)?
Flagella and undulating membrane
What diseases can it cause?
vaginitis, urethritis, prostato-vesiculitis
What is the transmission?
- vaginal sexual intercourse
- sharing douche equipment
- during passage in birth canal in newborns
What is it frequently coexistent with ?
candidiasis gonorrhea
syphilis
HPV or HIV etc
Why does T. Vaginalis does not appear to have a cyst form?
Because it does not survive in the external environment.
What is the infective and invasive form?
Trphozoite only
Describe the life cycle.
- Trichomonas vaginalis reside in the female lower genital tract and the male urethra and prostate where it replicates by binary longitudinal fission.
- It is transmitted among humans primarily by sexual intercourse
What pH of vaginal does it requires?
5 - 5.5
Explain the pathogenesis of “strawberry cervix” cause by Trichomonas Vaginalis.
Trophozoite is invasive.
Trophozoite burrows in vaginal epithelium.
It has no penetration power so it does not pass to sub-epithelial layer.
Causes degeneration and desquamation of vaginal epithelium.
Followed by leukocytic inflammation with very large number of trichomonas and leukocytes.
Causes inflammation with hyperaemia and petechial hemorrhage (strawberry cervix)
What is the symptoms in female?
1.Vaginitis with foul smelling, frothy, purulent, creamy
or yellowish discharge
2. Onset of vulvapruritis (itching of vulva)
What is the symptoms in male?
frequently asymptomatic,
occasionally urethritis, epididymitis and prostatitis
