Blood and Tissue Flagellates Flashcards
Parasites which inhabits the tissue and the blood of human with the aid of vectors.
Hemoflagellates
[4] member species of Blood and Tissue Flagellates
- Leishmania spp.
- Trypanosoma brucei gambiense
- Trypanosoma brucei rhodesiense
- Trypanosoma cruzi
[3] Structural Parts of Hemoflagellates
- Blepharoplast
- Kinetoplast
- Undulating membrane
Basal body in certain flagellated protozoans that consists of a minute mass of chromatin embedded in the cytoplasm at the base of the flagellum.
[structural part]
Blepharoplast
A disk-shaped mass of circular DNAs inside a large mitochondrion that contains many copies of the mitochondrial genome.
[structural part]
Kinetoplast
a locomotory organelle of certain flagellate (trypanosome and trichomonad) parasites, consisting of a finlike extension of the limiting membrane with the flagellar sheath; wavelike rippling of the undulating membrane produces a characteristic movement.
[structural part]
Undulating membrane
[4] Stages of Development of Hemoflagellates
- Amastigote
- Promastigote
- Epimastigote
- Trypomastigote
Disease: Chagas disease or American Trypanosomiasis
Trypanosoma cruzi
Found trypanosome on the intestine of a triatomid bug were the same parasite found in a child suffering from fever and enlargement of lymph nodes.
Carlos Chagas — Trypanosoma cruzi
Exhibits all four stage of development: amastigote, promastigote, epimastigote, trypomastigote.
Trypanosoma cruzi
An intracellular parasite.
Trypanosoma cruzi
5 Common names of Biological Vector
- Triatomine bugs
- Reduviid bugs
- Assassin bugs
- Conenose bugs
- Kissing bugs
3 Genera of Biological Vector
- Triatoma
- Rhodnius
- Panstrongylus
[4] Mode of Transmission — Trypanosoma cruzi
- Vector
- Transfusion
- Congenital
- Accidental
Natural transmission by triatomine bugs through blood meal/contamination with infected feces.
[Mode of Transmission — Trypanosoma cruzi]
Vector
A prevalent mode of transmission in urban area. Gentian violet (24hr) eliminates parasite in blood.
[Mode of Transmission — Trypanosoma cruzi]
Transfusion
Occurs during any stage of T. cruzi infection. Can result in premature labor, abortion or neonatal defects.
[Mode of Transmission — Trypanosoma cruzi]
Congenital
Ingestion of food contaminated with metacyclic trypomastigotes.
[Mode of Transmission — Trypanosoma cruzi]
Accidental
2 types of Biologic Vector
- Salivarian
- Stercoralian
transmission via mouth parts.
[biologic vector]
Salivarian
very efficient.
[biologic vector]
Salivarian