Atrial flagellates
Réviser ces flashcardsGratuit · répétition espacée · iPhone, Android, Mac et web
Toutes les cartes
1
Originally described as an ameba
-no cystic stage
-related to the trichomonads (flagellate).
-Resembles Trichomonas
-no cystic stage
-related to the trichomonads (flagellate).
-Resembles Trichomonas
DIENTAMOEBA FRAGILIS
2
DIENTAMOEBA FRAGILIS
-Co-infection with
-Co-infection with
Enterobius vermicularis
3
DIENTAMOEBA FRAGILIS
-MORPHOLOGY
-MORPHOLOGY
Rosette shaped nuclei (1 to 2)
-karyosome consists of four to six discrete granules.
-karyosome consists of four to six discrete granules.
4
It was first discovered in 1681 by Antoine van Leeuwenhoek
in his own stools
in his own stools
GIARDIA LAMBLIA
5
First described in 1859 by French scientist Dr. F. Lambl and
Czechoslovakian scientist Dr. Giard:
Czechoslovakian scientist Dr. Giard:
Cercomonas intestinalis
6
In 1915 Stiles coined
Giardia lamblia
7
Giardia lamblia
-MORPHOLOGY
-MORPHOLOGY
Trophozoite
✓ Pear/tear drop shaped, pyriform
✓ Bilaterally symmetrical
✓ “Old-man with eyeglasses”
✓ 4 pairs of flagella
✓ 2 nuclei with distinct karyosome (symmetrically bilateral)
✓ “Falling leaf motility” - movement
✓ Pear/tear drop shaped, pyriform
✓ Bilaterally symmetrical
✓ “Old-man with eyeglasses”
✓ 4 pairs of flagella
✓ 2 nuclei with distinct karyosome (symmetrically bilateral)
✓ “Falling leaf motility” - movement
8
✓ Ovoidal in shape
✓ Thick shell (double wall)
✓ Nuclei: 2 (young), 4 (mature)
✓ Presence of axonemes
✓ Thick shell (double wall)
✓ Nuclei: 2 (young), 4 (mature)
✓ Presence of axonemes
CYSTS
9
Cysts looks like
Coffee bean
10
Causative agent of Giardiasis
(malabsorption syndrome) or
Lambliasis
Lambliasis
11
Giardiasis a.k.a.
“Traveler’s diarrhea”
12
Giardiasis
-infections
-infections
Acute infections: “rotten eggs” odor = due to hydrogen sulfide
➢ Chronic infections:
✓ Steatorrhea → passage of greasy, frothy stools that may
float on toilet water
✓ Malabsorption of electrolyte, glucose, fluid
✓ Gay Bowel Syndrome
➢ Chronic infections:
✓ Steatorrhea → passage of greasy, frothy stools that may
float on toilet water
✓ Malabsorption of electrolyte, glucose, fluid
✓ Gay Bowel Syndrome
13
➢ Direct fecal smear: cysts (1 hr-semiform) and trophozoites (30
min-watery) can be seen
Stool examination
➢ Direct fecal smear: cysts (1 hr-semiform) and trophozoites (30
min-watery) can be seen
14
-may demonstrate Giardia trophozoites.
-The patient swallows a gelatin capsule attached to a
nylon string, with one end of the string attached to
the patient’s cheek.
-The patient swallows a gelatin capsule attached to a
nylon string, with one end of the string attached to
the patient’s cheek.
Enterotest
15
-If the parasite is not found in the feces,
this aspiration may be done
this aspiration may be done
Duodenal aspirate
16
Look at the intestinal villi if it is normal or
experiencing hypertrophy
experiencing hypertrophy
Biopsy
17
it has the highest combination of
sensitivity and specificity.
sensitivity and specificity.
Direct Fluorescent Antibody –gold standard
18
Immunologic and Molecular Test
➢ EIA and ELISA
➢ Western Blot
➢ PCR
➢ Western Blot
➢ PCR
19
Treatment for intestinal villi
Metronidazole,Nitazoxanide, Tinidazole (approved)
20
The only pathogenic Trichomonas
➢ No cyst stage
➢ First observed by Donne in 1836 in purulent secretions of
male and female urogenital tracts.
➢ No cyst stage
➢ First observed by Donne in 1836 in purulent secretions of
male and female urogenital tracts.
TRICHOMONAS VAGINALIS
21
TRICHOMONAS VAGINALIS Habitat
Urogenital tract
➢ Female: vulva (vagina)
➢ Male: prostate gland
➢ Female: vulva (vagina)
➢ Male: prostate gland
22
sexually transmitted disease called
trichomoniasis
23
TRICHOMONAS VAGINALIS Morphology
“Rapid jerky tumbling”- movement
➢ Pyriform shape
➢ 4 anterior flagella
➢ Prominent axostyle
➢ Presence of undulating membrane
➢ Single nucleus
➢ Pyriform shape
➢ 4 anterior flagella
➢ Prominent axostyle
➢ Presence of undulating membrane
➢ Single nucleus
24
Trichomoniasis Male symptoms
➢ Asymptomatic (less persistent, self-limiting)
25
Trichomoniasis Female symptoms
➢ Greenish-yellow discharge
➢ Edema, itching, burning sensation
➢ vaginal pruritus
➢ “Strawberry cervix"
➢ Edema, itching, burning sensation
➢ vaginal pruritus
➢ “Strawberry cervix"
26
Largest flagellate in man
CHILOMASTIX MESNILI
27
CHILOMASTIX MESNILI Habitat:
Cecal region of the large intestine
28
CHILOMASTIX MESNILI Morphology
✓ Asymmetrical
✓ Pear-shaped
✓ Spiral groove on midportion
✓ 3 anterior flagella
✓ 1 flagellum within the cytostome → Cystostomal fibril
(shepherds crook)
✓ “Boring/spiral movement or Cork-screw movement”
✓ Pear-shaped
✓ Spiral groove on midportion
✓ 3 anterior flagella
✓ 1 flagellum within the cytostome → Cystostomal fibril
(shepherds crook)
✓ “Boring/spiral movement or Cork-screw movement”
29
Usually found in the intestines
➢ Commensal
➢ Relatively smaller than T. vaginalis
➢ Specimen: Stool (only this)
➢ occurs only as a trophozoite
➢ noninvasive
➢ Commensal
➢ Relatively smaller than T. vaginalis
➢ Specimen: Stool (only this)
➢ occurs only as a trophozoite
➢ noninvasive
TRICHOMONAS HOMINIS
30
TRICHOMONAS HOMINIS
-Mode of Transmission
-Mode of Transmission
fecal contamination of food and drinks
31
Also known as Trichomonas buccalis
➢ Usually found in the mouth
➢ No cyst stage, only trophozoites
➢ Usually found in the mouth
➢ No cyst stage, only trophozoites
TRICHOMONAS TENAX
32
Specimen for TRICHOMONAS TENAX
Mouth Scrapings
33
Mouth Scrapings
-Mode of transmission
-Mode of transmission
contaminated dishes and utensils, kissing
➢ Trophozoites appear to durable: surviving several hours in
drinking water
➢ Trophozoites appear to durable: surviving several hours in
drinking water
Plus de flashcards : Médecine et santé
Medicine in Britain: 1250-Present DayMédecine et santé · AnglaisLemMuschi skeletci CNP “C.S”Médecine et santé · RoumainRyan(4) De centrale hørebanerMédecine et santé · DanoisTobiasPK ConsiderationsMédecine et santé · AnglaisAveryAnimal Health and Disease Unit 1Médecine et santé · AnglaisNateRenal FunctionMédecine et santé · AnglaiskarebearHematology and Immunology: Cell Pathways and Markers (Chap 5Médecine et santé · AnglaisDanielaMedical Terminology Week 2Médecine et santé · PortugaisAureliaEliannaenergy transfer Médecine et santé · AnglaisMohamedBIO Chapter 7-8 HEART/BLOODMédecine et santé · AnglaisJadenCardio ReviewMédecine et santé · AnglaiscathsimsLarge IntestineMédecine et santé · AnglaisKrisMedCards
Tous les decks : Médecine et santé
Révise ces decks dans l’app
Gratuit sur iPhone, Android, Mac et le web. Ajoute n’importe quel deck à ton compte en un tap.
