Presentation on theme: "Eukaryotic Parasites (Protozoa) Drs. Babcock and Hopkins Spring 2009."— Presentation transcript:
Eukaryotic Parasites (Protozoa) Drs. Babcock and Hopkins Spring 2009
Entamoeba histolytica (amebiasis, severe diarrhea) Acquired through consumption of contaminated food or water. Trophozoite is feeding and reproducing stage and causes disease. Cyst is circular and is what is ingested. Trophozoite forms pseudopodia. Target nuclei in both.
Entamoeba Histolytica trophozoites
Entamoeba histolytica cysts
Entamoeba histolytica with ingested erythrocytes
Balantidium coli (balantidiasis) Trophozoite has cilia. Cyst does not. Large nucleus. Can cause diarrhea and in severe cases ulcers and abscesses that can lead to dysentery and death.
Balantidium coli trophozoites
Giardia intestinalis - giardiasis 2 nuclei Flagella on Trophozoite.
Giardia intestinalis - trophozoite
Giardia intestinalis trophozoite
Trichomonas vaginalis life cycle Single nucleus Flagella. NO CYST form. Vaginitis with malodorous discharge and pruritis.
Trichomonas vaginalis trophozoite
Tsetse fly Trypanosoma brucei Flagellated. Seen in blood Smear outside of RBCs. Arthropod vector, Tsetse fly. Infection through bite and causes African Sleeping Sickness.
Arthropod vector - Anopheles is vector Plasmodium falciparum Seen in blood smear inside RBCs. Undergoes schizogony. Causes Malaria