Exam 3 -- Protozoa 2 Flashcards
What is the vector for Trypanosoma brucei gambiense? And Trypanosoma brucei rhodesiense?
Tsetse fly (female and male) for both
What disease can Trypanosoma brucei rhodesiense cause?
Acute… Fatal.
What disease can Trypanosoma brucei gambiense cause?
Chronic… Sleeping sickness
What blood stage is Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?
trypomastigote
What is the tissue stage of Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?
N/A
What is the vector stage of Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?
epimastigoite
What binary fission occurs in Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?
Blood of the host and the vector
What is the life cycle of Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense?
Tsetse fly takes blood and inject trypomastigote -> In the host blood, they multiply to produce more trypomastigote -> Tsetse fly takes blood meal with trypomastigote -> In the fly, trypomastigote transforms into epimastigote -> Multiply -> Trypomastigote (ready for new host)
What is the vector of the Trypanosoma cruzi? Where is this found?
Kissing bug (through the feces to open wound)
What is the disease is caused by Trypanosoma cruzi?
Chagas disease; cardiac form; colonmegaly (digestive system)
What is the blood stage of Trypanosoma cruzi?
Trypomastigote
What is the tissue stage of Trypanosoma cruzi?
Amastigoite
What is the vector stage of Trypanosoma cruzi?
Epimastigoite
Where does binary fission occur in Trypanosoma cruzi?
In the tissues of the host and the vector.
What is the life cycle of Trypanosoma cruzi?
Kissing bug takes a blood meal and leaves trypomastigote within the feces on the host skin -> Invades tissue -> In the host tissues they multiply to produce more amastigote -> Transform into trypomastigote and go to the blood to another organ -> Kissing bug takes blood meal with trypomastigote -> In the fly trypomastigote transforms in epimastigote -> Multiply -> Trypomastigote -> (ready for the new host)
What is the vector of Leshmania donvani and Leshmani maxicana?
Female of sandfly
What is the disease caused by Leshmania donvani and Leshmani maxicana?
Kala-azar disease (hepatosplenomegaly)
What is the blood stage of Leshmania donvani and Leshmani maxicana?
Promastigote
What is the tissue stage of Leshmania donvani and Leshmani maxicana?
Amastigote (Macrophages)
What is the vector stage of Leshmania donvani and Leshmani maxicana?
Promastigote
What binary fission occurs in Leshmania donvani and Leshmani maxicana?
In the host macrophages and the vector.
What is the life cycle of Leshmania?
Sandfly takes a blood meal and injects promastigote -? Invades macrophages and transform into amastigote -> In the host macrophages they multiply to produce more amastigote -> Transform into promastigote and go with the blood to another organ -> Sandfly takes blood meal with macrophages with amastigote -> In the fly, amastigote transforms into promastigote -> Multiply -> (Ready for the new host)
What is the transmission path for Chilomastix mesnili?
The oro-fecal pathway from contaminated food/water
Chilomastix mesnili moves by what mechanism?
Flagellum
What are the trophozoite characteristics for Chilomastix mesnili?
- Pyriform shape;
- 3 anterior flagellum;
- Cytostomal cleft
What are the cyst characteristics of Chilomastix mesnili?
Lemon shape cap
What is the pathogenicity of Chilomastix mesnili?
Harmless - up to diarrhea
What is the transmission path of Giardia lamblia?
The oro-fecal pathway from contaminated food/water
Giardia lamblia moves by what mechanism?
Flagellum
What are the trophozoite characteristics for Giardia lamblia?
- Tear drop shape; * 4 pairs of flagellum; * axostyle; * 2 nuclei
What are the characteristics of the cyst for Giardia lamblia??
- 4 nuclei;
- axostyle;
- infective stage
What is the transmission path for Trichomonas vaginalis?
Sexual intercouse
Trichomonas vaginalis moves by what mechanism?
Flagellum
What are the trophozoite characteristics of Trichomonas vaginalis?
- 4 anterior + 1 posterior undulating flagellum; * axostyle
What are the cyst characteristics of Trichomonas vaginalis?
NO CYST
What is the pathogenicity of Trichomonas vaginalis?
- Asymptomatic itching/discomfort of prostatitis; * Vaginal discharges
What is the transmission path for Dientamoeba fragilis?
1- Oro-fecal pathway from contaminated food/water with trophozoite; 2- Trophozoite along with Ascaris or vermicularis eggs (hyper parasitized)
Dientamoeba fragilis moves by what mechanism?
Pseudopodia
What are the trophozoites characteristics of Dientamoeba fragilis?
1 or 2 nuclei (mostly) that are bound by the mitotic spindle.
What are the cyst characteristics of Dientamoeba fragilis?
NO CYST
What is the pathogenicity of Dientamoeba fragilis?
Harmless - up to diarrhea