HEMOFLAGELLATES Flashcards
Hemoflagellates
- Leishmania spp
- Trypanosoma brucei complex
- Trypanosoma cruzi
MOT and vector of Leishmania spp
MOT: skin innoculation of promastigote
Vector: sandflies (phlebotomous/lutzomyia)
infective stage of Leishmania
promastigote
MOT and vector of Trypanosoma brucei complex
MOT: skin inoculation of metacyclic/metacystic trypomastigotes
Vector: tsetse flies (Glossina spp)
composed of 2 or more organisms that share a common biology
Trypanosoma brucei complex
MOT and vector of Trypanosoma cruzi
MOT: indirect inoculation of metacyclic/ metacystic trypomastigote
Vector: feces of Kissing/ Redwiid/ Triatomine bugs
habitat of Leishmani spp
lymphoid tissues of the skin mucus, membranes, visceral organ (liver, spleen lymphq
habitat of T. brucei complex
Blood, lymph, CSF
habitat of T. cruxi
- Endothelial cells, muscles, nervous tissues (amastigotes)
- Blood, CSF (trypomastigote)
developmental stages of Hemoflagellates
PAMET
P - PROMASTIGOTE
A - AMASTIGOTE
M- METACYCLIC TRYPOMASTIGOTE
E- EPIMASTIGOTE
T- TRYPOMASTIGOTE
vector of Leishmania spp
sandfly
developmental stages of Leishmania spp
PA
- Promastigote (sandfly)
- Amastigote (man)
vector or T. brucei
Tsetse fly
developmental stages present in T. brucei
MET
- Metacyclic Trypomastigote (tsetse fly)
- Epimastigote (tsetse fly)
- Trypomastigote (man)
vector of T. cruzi
kissing, redwiid, triatomine bugs
developmental stages present in T. cruzi
AMET
- Amastigote (man)
- Metacyclic Trypomastigote (bug feces)
- Epimastigote (bug)
- Trypomastigote (man)
Skin lesions with elevated margins that leave ugly scars on healing
Cutaneous Leishmaniasis
Old World CL
Leishmania tropica, L. major
New World CL
L. mexicana
vector of L. mexicana
Lutzomyid fly
oriental sore, delhi ulcer, aleppo, jericho, baghdad bol
old world CL
Chiclero’s ulcer
New World CL
specimen diagnosis of Cutaneous Leishmaniasis
skin biopsies from margin of ulcer
Highly disfiguring, leprosy-like cutaneous lesions that spread to the mucous membranes
Muco-cutaneous Leishmaniasis
agent/s of Muco-cutaneous Leishmaniasis
L. braziliensis
spx for Muco-cutaneous Leishmaniasis
Skin and mucosal biopsy
aka espundia/tapir’s nose
Muco-cutaneous Leishmaniasis
fever, organomegaly, ascites, anemia, hyperpigmentation of the skin
Visceral Leishmaniasis
Old World VL
L. donovani
old world VL aka
- kala-azar
- dum-dum
- black fever
New World VL
L. chagasi
spx for Visceral
Leishmaniasis
tissue aspirates or biopsy (liver, spleen, bone marrow)
enlargement of abdomen due to fluid accumulation
ascites
hyperpigmentation of the skin
black fever (darkening)
- Trypanosome chancre (at the bite site)
- Hemolymphatic stage (invasion of blood in lymphatic system)
- fever and cervical lymphadenopathy winter bottom sign
- Meningoencephalitic or sleeping stage
– somnolence, coma, and death
African Trypanosomiasis
or Sleeping Sickness
swollen neck lymph node
winterbottom sign
WEST African Trypanosomiasis or Sleeping Sickness
T. brucei gambiense (Chronic)
EAST African Trypanosomiasis or Sleeping Sickness
T. brucei rhodesiense (acute)
spx for african
Trypanosomiasis
or Sleeping
Sickness
- blood specimen
- lymph node aspirate
- CSF
New World or American Trypanosomiasis
Chaga’s disease
agent of Chaga’s disease
T. cruzi
swelling around the eyes (orbital edema)
Romania
swelling at other sites aside the eyes
chagoma
manifestations of chaga’s disease
fever, hepatosplenomegaly, myocarditis
spx for chaga’s disease
blood, biopsy from affected organs (muscles and nervous tissues)