Chapter 4: Flagellates Flashcards
Class of Flagellates?
Mastigophora
Structures found in Flagellates
Undulating membrane (for Trichomonas)
Axostyle
Flagella
Undulating membrane is attached to?
Costa
Rod like structures
Axostyle
Whip like structure
Flagella
Intestinal Flagellates
Giardia lamblia Enteromonas hominis Trichomonas hominis Chilomastix mesnili Embadomonas intestinalis Retortamonas intestinalis Dientamoeba fragilis
Blood and Tissue Flagellates
Leishmania tropica Leishmania braziliense Leishmania donovani Trypanosoma rhodiense Trypanosoma gambiense Trypanosoma cruzi Trichomonas tenax Trichimonas vaginalis
Old world cutaneous leishmaniasis
Leishmania tropica
American mucocutaneous leishmaniasis
Leishmania braziliense
Viceral leishmaniasis
Leishmania donovani
East african sleeping sickness
Trypanosoma rhodiense
West african sleeping sickness
Trypanosoma gambiense
4 developmental stages of flagellates
Amastigote
Promastigote
Epimastigote
Trypomastigote
Leishman-donovan body
Amastigote
Leptomonal form
Promastigote
Crithidial form
Epimastigote
Trypanosomal form
Trypomastigote
Most common gut flagellate cause of outbreak in the developed countries
Giardia lamblia
Specimen of choice for Giardia lamblia
Stool
Duodenal aspirate
Small intestine biopsy
Test for Giardia lamblia
Entero test ELISA EIA Western blot RT-PCR
Where life cycle of Giardia lamblia happens
Duodenum
Infective stage of Giardia lamblia
Cyst (10 cysts to manifest)
Mode of transmission of Giardia lamblia
Ingestion
Anal sex
Oral-anal
Clinical symptoms of Giardia lamblia
Traveler’s diarrhea:
Steatorrhea
Incubation period of Giardia lamblia
1-2 weeks or 10-36 days
Treatment for Giardia lamblia
Albendazole
Metronidazole
Prevention of Giardia lamblia
Proper water treatment
Personal hygiene
Can undergo changes in it’s antigen for escape mechanism
Antigenic variation
Virulence factors of Giardia lamblia
Adhesive disc - attachment to cells
Villus flattening - malabsorption
Also called as ping pong disease
Trichomonas vaginalis
Treatment for Trichomonas vaginalis
Metronidazole
Incubation period of Trichomonas vaginalis
4 days to 4 weeks