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Parasitology ( A. Zeibig )
Chapter 4: Flagellates
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Parasitology ( A. Zeibig ) > Chapter 4: Flagellates
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Flagellate
belong to the phylum
protozoa
and are member of of the subphylum
mastigophora.
Intestinal species
Giardia intestinalis
Chilomastix mesnili
Dientamoeba fraginalis
Trichomonas hominis
Enteromonas hominis
Retortamonas intestinalis
Extraintestinal species
Trichomonas tenax
Trichomonas vaginalis
GIARDIA LAMBLIA
(
CYST
)
SIZE :
8-15 um
SHAPE:
oval
NUCLEI:
4
FEATURES:
axoneme
;
parabasal bodies
;
remnant
of
flagella
CHILOMASTIX MESNILI
(
CYST
)
SIZE:
7-10 um
SHAPE:
lemon
or
nipple
shaped
NUCLEI:
1
FEATURES :
curved fibril
alongside of cytostome refered as "
shepherd crook
"
Enteromonas hominis
(
CYST
)
SIZE
:
6-8
um
SHAPE :
ellipsoid
NUCLEI :
2-4
FEATURES : bipolar of nuclei
resembles
E.
nana
cyst
Retortamonas intestinalis
(
CYST
)
SIZE : 4-7 um
SHAPE :
ovoid
or pyriform
NUCLEI :
4-7
FEATURES : cytostome
extends
above
nucleus,
resembles
C.
mesnili
cyst
(
bird
beak
appearance
)
CHILOMASTIX MESNILI
(
Trophozoite
)
SIZE:
15-7 um
MOTILITY:
Spiral
/
rotary
NUCLEI:
1
FLAGELLATE :
4
FEATURES:
prominent cytostome
with
spiral groove
ENTEROMONAS HOMINIS (Trophozoite)
SIZE :
8-9
um
MOTILITY:
jerky
NUCLEI:
1
FLAGELLA:
4
FEATURES :
one sided flattened
RETORTAMONAS INTESTINALIS
(
Trophozoite
)
SIZE :
6-7 um
MOTILITY:
jerky
NUCLEI:
1
FLAGELLA:
2
FEATURES : cytostome
extends 1
/
2
the length of body
DIENTAMOEBA FRAGILIS
( TROPHOZOITE )
SIZE :
5-15 um
MOTILITY:
nonprogressive
NUCLEI:
1-2
FLAGELLA: --
FEATURES :
multiple hyaline leaf
like
pseudopodia nucleus
has
fragmented
TRICHOMONAS HOMINIS
(
TROPHOZOITE
)
SIZE :
7-13 um
MOTILITY:
Rapid jerky tumbling
NUCLEI:
1
FLAGELLA:
5
FEATURES :
long undulating membrane axostyle
and
fine
,
scattered granules
GIARDIA LAMBLIA
(
Trophozoite
)
SIZE :
15-10 um
MOTILITY:
falling leaf
NUCLEI:
2
FLAGELLA:
8
FEATURES :
prominent sucking disc
and
axostyle
(
Old man w/ eyeglasses
)
Giardia lamblia
- can cause
giardiasis
, lambliasis or
traveler's diarrhea
and has been associated with homosexual man with
gay bowel syndrome
Dientamoeba fragilis
- intemittent diarrhea, nausea, vomiting, abdominal pain
Trichomonas vaginalis
- cause nonspecific vaginalis, urethritis or prostatitis,
foul-smelling discharge.
Trichomonas tenax
SIZE:
5-12 um
AXOSTYLE:
thick
UNDULATING MEMBRANE:
almost as long as costa
INCLUSION :
few discrete granules
Trichomonas hominis
SIZE:
7-13 um
AXOSTYLE:
semi-grid
UNDULATING MEMBRANE: as
long
as
Acosta
INCLUSION :
fine
,
scattered granules
Trichomonas vaginalis
SIZE:
7-23 um
AXOSTYLE:
split into fibrils
UNDULATING MEMBRANE:
2/3 pr 1/2 of costa
INCLUSION :
large
amount
of
sliderophile
granules
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