Trichomonas vaginalis is a Protozoaire Flagellé of the Trichomonas , whose presence on the génito-urinary mucous membranes determines the urogenital trichomonose . It is a parasitic of the human being. Its transmission is especially venereal because it very sensitive to the dessication (it thus needs moist environments).
Geographical distribution
Cosmopolitan, also widespread under all the climates.
Morphology and cycle
Known only in vegetative form, like the Trichomonas intestinalis , it is larger than him: 10 to 20 µm; oval or round, with a Axostyle exceeding definitely more with the back, it carries 3 or 4 Flagelle S former and 1 whips recurring raising an undulating membrane short (a third of the body).
Moving actively, it is nourished by Osmose and multiplies by longitudinal division. The cycle is with only one host and, in the absence of cystic forms, the transmission of the vegetative forms is direct.
Pathogenesis at the human being
Epidemiology
In spite of many healthy carriers (up to 50% of the cases are asymptomatic), especially at the men, the Trichomonas vaginalis has a pathogenic role Net in the 2 sexes:
- Trichomonas vaginalis is responsible for 30% of the nongonococcal Urétrite S.
- the Vaginite with trichomonas vaginalis accounts for 50% of the vaginites with Leucorrhée S.
Transmission
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At the woman, after puberty and when vaginal acidity is decreased, one finds it in a frequent way like parasite of the cavity Vagin ale and the urethra; but also of the Bladder or of the Glands of Skene and Bartholin.
- At the man, one finds it on the level of the Urètre, of the Sillon balano-préputial, the Prostate and the seminal Vésicules.
- the transmission is usually done by venereal contage, sometimes like stain of the linens and toilet requisites! |date= .
Diagnosis
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the diagnosis is done by examining a fresh taking away (vaginal taking away or urethral drop) with the Microscope with the weak enlargement between blade and plate in diaphragmée light or with the contrast of phases which shows the Protozoaire. The trichomonas are recognized with their movements and their morphology. At the man, tracking could be made by collection of the first drop of the meatus the morning before any micturition, or by massage prostatique.
- In the event of diagnosis of a genital trichomonose, it is necessary to seek the whole of the germs responsible for MST.
Private clinic
at the woman
- It is more pruriginous vaginites;
- the vaginal flow or Leucorrhée is abundant, often white-greenish and spumous;
- There exists a erythema vagina, and exocol;
- the patient complains about Dyspareunie on the level of the vaginal opening.
at the man
He is very often asymptomatic from where its difficult tracking and its easy dissemination. In the event of proven urethritis, there exists a Dysurie.
Treatment
It is necessary to treat all the people (patient and all the known partners), symptomatic or not, by:
- Métronidazole (Flagyl *): 2 grams per oral way in single amount;
- to advise with the patients not to consume alcoholic beverages during the treatment the métronidazole nor in the 48 hours which follow in order to prevent the reactions of the type “antabuse”;
- the métronidazole, badly supported, tends to being replaced by the Tinidazole (Fasigyne *) in single amount (4 compressed to 500 Mg in only one catch) or the Mimorazole (Naxogyn *) proportions some also single (8 compressed to 250 Mg or 2 compressed to 1 G).
- to avoid the sexual relations without condom until the cure (clinical or parasitologic)
- the acidification of the vaginal medium by the Lactic acid (Lactacid *) and réensencement in bacilli of Döderlein supports the cure.
External bonds
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Canadian Guiding lines for the sexually transmitted diseases
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