PROTOZOA (Flagellates) Flashcards
types of Lumen Dwelling/Atrial flagellate
Giardia lamblia
Chilomastix mesnili
Enteromonas hominis
Retortamonas intestinalis
Dientamoeba fragilis
Trichomonas tenax
Trichomonas hominis
Trichomonas vaginalis
Habitat (Large intestine)
Chilomastix mesnili
Enteromonas hominis
Retortamonas intestinalis
Dientamoeba fragilis
Trichomonas hominis
Habitat (Small intestine)
Giardia lamblia
Habitat (Mouth)
Trichomonas tenax
Habitat (Vagina and urethra)
Trichomonas vaginalis
Old man with eye glasses
Giardia lamblia or Giardia intestinalis
Most common protozoan pathogen worldwide (1st identified protozoan in US)
ONLY flagellate that inhabits the small intestine
Giardia lamblia or Giardia intestinalis
Giardia lamblia causes ______ _______ due to contaminated water in underdeveloped countries
traveller’s diarrhea
NOT a tissue invader but attaches to mucosal linings by means of ______ ____
sucking disks
Giardia lamblia is associated with ___ _____ _______ and _________ _______ (steatorrhea)
Gay Bowel Syndrome and Malabsorption syndrome
lipids in stool spx
steatorrhea
Presence of sucking disks, two axonemes and two parabasal bodies
Giardia intestinalis trophozoite
Ovoid in shape
Giardia intestinalis cyst
Pear-shaped or teardrop which is bilaterally symmetrical
Giardia intestinalis trophozoite
Two immature cyst
Giardia intestinalis cyst
Falling leaf-like motility
Giardia intestinalis trophozoite
Four mature
Giardia intestinalis cyst
4 pairs of flagella (8 in total)
Giardia intestinalis trophozoite
Cytoplasm retracted in cell wall median bodies (2-4)
Giardia intestinalis cyst
Places of 4 pairs of flagella in Giardia intestinalis trophozoite
o One pair anterior
o One pair posterior
o Two pairs central extending lateral
No cystic stage
Trichomonas
Non-pathogenic Trichomonas
Trichomonas tenax
Trichomonas hominis
Pathogenic Trichomonas
Trichomonas vaginalis
Spx: Buccal scrapping
Found in swollen gums, teeth
Trichomonas tenax
Spx: Stool
Resides on the intestine
Trichomonas hominis
Spx: Urine or vaginal discharge
Found on genital *both in male and female
Trichomonas vaginalis
Pear shape; Five anterior flagella and one posterior flagellum
Trichomonas tenax
Trichomonas hominis
Trichomonas vaginalis
Nervous jerky (motile)
Trichomonas tenax
Trichomonas hominis
Rapid jerky (motile)
Trichomonas vaginalis
One ovoid nucleus filled with chromatic granules
Trichomonas tenax
Spherical nucleus with central karyosome
Trichomonas hominis
Ovoid nucleus filled with chromatin granules
Trichomonas vaginalis
Undulating membrane extending 2/3 of the body length
Trichomonas tenax
full body length undulating membrane
Trichomonas hominis
Undulating membrane half part of the body
Trichomonas vaginalis
Thick axostyle curved around nucleus
Trichomonas tenax
Axostyle extends beyond the posterior part
Trichomonas hominis
Axostyle is coiled around the nucleus
Trichomonas vaginalis
Small cytostome
Trichomonas tenax
Conical cytostome cleft
Trichomonas hominis
Absence of cytostome but granules along axostyle is present
Trichomonas vaginalis
Has 5 flagella (one coils the body along with costa and undulating membrane)
Trichomonas tenax
makes the trichomonas’ one side thick
Costa
patient experience intense itchiness and because of the flagella -> can attach to vaginal walls -> irritation -> production of vaginal discharge with foul odor
T. vaginalis
Trichomonas spp. can be examined unstained with wet drop method or with
Giemsa, Acridine orange, Papanicolau, Romanoswky or cultured in Diamond media.
MOT (T. vaginalis)
sexual contact but nonvenereal transmission is possible
____ are asymptomatic
Male
Symptoms in T. vaginalis
Strawberry cervix