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Flagellates

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

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Flagellates

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

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

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

  4. Giardia lamblia trophozoite

  5. Giardia lamblia cyst

  6. Entero String Test

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

  8. Shepherd’s crook

  9. Shepherd’s crook

  10. 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

  11. Dientamoeba fragilis

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

  13. Trichomonas hominis trophozoite

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

  15. Enteromonas hominis

  16. Enteromonas hominis

  17. Enteromonas hominis

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

  19. Retortamonas intestinalis

  20. 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

  21. 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

  22. Trichomonas vaginalis

  23. THANK YOU!

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