Giardia + Trichomonas +Free living Ameba Flashcards
Giardiasis caused by — ??
Giardia lamblia
473
Pathogenic form of giardia ??
Trophozoite
Stages of giardia ??
- Trophozoite
- Cyst
Infective form of giardia ???
Cyst
473
Mode of transmission of giardia ??
Fecally contaminated food & water - in gestion of the cyst
475
Tx of giardiasis»_space;??
Metronidazole
477
Features of stool in giardiasis ??
- Non bloody diarrhea
- Stool-Foul smelling
477
Passage of yellowish & greasy stools in which there is excess of fat –
Steatorrhea
475`=
Giardia antigen detection test ??
ELISA
476
Test for the detection of trophozoite ??
String test
476
DNA based technique for detection nucleic acid – ??
PCR
476
Steatorrhea cause in giardia
ONE LINE ??
Malabsoprtion of fat
476
Stool specimen is taken for which thing ?/
Only cyst
Invasive (+) = ??
Non-Invasive (+) =??
-Amoebiasis
-Giardiasis
477
Evidence of trophozoite can be found from which specimen ?/
- Bile
- Jejunal biopsy
- Duodenal secretions
476
Clinical features of giardiasis ??
- Watery-Non bloody diarrhea
- Nausea
- Flatulence
- Abdominal cramps
- Steatorrhea
- Anorexia
476
Virulence factors of giardia ??
- Cytoskeleton
- Adherence
- Encystation
Tests for giardiasis ??
- Stool examination
- String test - Detect trophozoite
- Detect G atg in stool
477
Trichomoniasis is caused by ?
Trichomonas vaginalis
480
mode of transmission of T V ?
sexual intercourse
infective & pathogenic form of TV ?
Trophozoite
is there any cyst in TV ?
NO
Clinical features of TV in female ?
- watery
- foul smelling
- grennish vaginal discharge
- itching
- burning sensation
specimen collection in Lab Dx for TV in man female ?
morning urethral discharge & urine sediment after prostate massage
+ high vaginal swab
clinical features in male by TV /
- asymptomatic
- 10%= urethritis
other test for TV ?
- serological test-not useful
- NAAT-PCR
- culture
microscopic examination for TV ?
- slide stained with normal saline- trophozoite
- wet mount preparation of vaginal/prostatic secretion = pear shaped trophozoite & typical jerky motion
advice given to trichomoniasis pt ?
- to drink plenty of water
- to use condom
Tx of TV ?
- Metronidazole - flagyl
- tinidazole - tindamax
why amoebiasis is invasive ?
invade gut wall by = HISTOLYSIN
why no cyst in TV ?
as it does not expose to enviroment
no need of durable cyst stage
opportunisticc intestinal protozoa ?
cyptosporidium
cyclospora
isospora
microspora
free living ameba name >
naegleria
acanthamoeba
balamuthia
disease caused by free living ameba ?
primary amebic meningoenchephalitis - PAM
granulomatous amebic encephalitis - GAE
extra disease in acanthamoeba ?
keratitis
brain eating ameba ?
naegleria fowleri
mode of transmission of N f >
olfactory tract
parasites transmitted by blood transfusion
plasmodium
leishmania
toxoplasma gondi
babesia micoti
trypnosoma cruzi
stage that infects human in Acanthamoeba ?
trophozoite
contact lens euser disase >
acanthamoeba - 472
how to identify axostyle of giardia ? according to levinson
To identify the axostyle of Giardia according to Levinson:
- Prepare a stool sample (wet mount or stained slide).
- Use a microscope to look for pear-shaped Giardia trophozoites.
- Identify the axostyle as a thin, rigid, rod-like structure running through the midline of the trophozoite.
- Confirm with staining (e.g., trichrome) and compare with reference images.
The axostyle provides structural support and is a key diagnostic feature.
