Lecture III: protazoans Flashcards
Entamoeba histolytica (amebiasis) symptoms
Bloody diarrhea, can invade tissues. Other presentation: Liver abscess.
lumenal; intestine leads in invasion of tissues
Entamoeba histolytica
transmission of entomoeba histolytica
fecal/oral
anal sex
Entameoba histolytica lifecyle **
Cysts protect trophozoites from acid–> go to sm intestine
attach to colon and divide
cysts form in large intestine and shed in feces
tphropozoites pepentrate mucosa. Can become invasive.
Entameoba histolytica leads to
diarheaa or dysentery when it invades colonic epithelium
entomeoba histolytica dysentery leads to
severe bloody diahrea
Pt with entomeoba histolytica with dysentery can lead to
liver abcess and death
what can we do to lower likelyhood of entomeoba histolytica?
good sanitation, condoms and personal hygeine
Giradia lamblia transmission
fecal/oral from wild animals
epidemics in nursery and ‘ski resorts’ and backpackers beware!
giardia lamblia
Giardia lamblia results in:
explosive diarhea, non-bloddy and accute onset
This parasite can complicate pregnancy
giardia lamblia
Giardia lamblia can be prevented by;
boiling water, filter, hygiene
Apicomplexans are obligate ______ paracells
intracellular
This is the form of Cyptosporidim in humans?
Cyptosporidium hominis
Cryptosporidiosis parvum is in
cows
Cyptrosporidiosis hominis is common in patients with
AIDS
water pruification system broke…what outbreak could we get?
Think farm runoff
Cryptosporisiosis hominis
3 or more watery bowels
then profuse watery diarrhea
shedding of oocyst high during acute phase
Cyrptosporidiosis
Toxoplasma gondii is located in
tissue and blood
transplancental: Congenital infection caused by this disease
toxoplasmosis gondii
this is known as being transmitted by cats but more often by undercooked pokr
toxoplasmosis gondii
If you were previously exposed to toxoplasmosis is your baby in danger of contractin?
not if it was from an old infection
if seropositive for toxo-specific IgG, test again in 3 weeks, if posiive for IgM then chronic for 6 months, don’t get pregant
What will show up on a CAT of baby that got infected with toxoplama gondii?
enhancing ring lesions
