Flagellates PETER S. AZNAR, M.D., FPSP.

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Presentation transcript:

Flagellates PETER S. AZNAR, M.D., FPSP

Giardia intestinalis AKA Giardia lamblia S/S: bloating, flatulence, foul-smelling, fatty diarrhea (often seen in campers/hikers) cysts in water

G. lamblia Old man with glasses Duodenal aspiration indicated Entero String Test Associated with nursery school diarrhea outbreaks Tx: Metronidazole

Giardia lamblia trophozoite

Giardia lamblia cyst

Entero String Test

Chilomastix mesnili Lemon cyst The cytosome is evident with a curved shepherd’s crook fibril

Shepherd’s crook

Shepherd’s crook

D. fragilis Commonly found together with gram (-) infection Tetrad karyosome in the nucleus No cyst form Means of diagnosis: Trichome stained smear Associated with nursery school diarrhea outbreaks

Dientamoeba fragilis

Trichomonas hominis AKA intestinal trichomonas organ of locomotion; undulating membrane undulating membrane extends the whole part of the body no cystic stage

Trichomonas hominis trophozoite

Enteromonas hominis nonpathogenic trophozoites have flagella has cystic stage common food contaminant

Enteromonas hominis

Enteromonas hominis

Enteromonas hominis

Retortamonas intestinalis smallest flagellate cyst has two flagella cyst is similar to chilomastix mesnili

Retortamonas intestinalis

Trichomonas tenax AKA oral trichomonas present in periodontal disease smallest trichomonas organ of locomotion; undulating membrane (2/3 length of the body) no cystic stage

Trichomonas vaginalis Strawberry shaped lesion/cervix Associated w/ Hanging Drop tech. virulence factors; adhesins AP65, AP51, AP33, and AP23 to vaginal epithelial cells lacks mitochondria undulating membrane extends one half of the body

Trichomonas vaginalis

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