Protista 6 Flashcards
stramenopiles taxonomy
kingdom- protistis
class- sar- eukaryotes
order- straemenopiles
straemeno-piles taxonomy
class- SAR-eukaryotes
order- straemenopiles
stramenopiles id
- flagella w/ fine hair like projections
- stamen and pile long narrow shaft giving rise to small number of fine hairs
- entire structure inserts into cell by basal region
stamenopiles- diatoms
lost these hairs
stamenopiles associated with what
water molds, brown algae
blastocystis hominis taxonomy
kingdom- protistis
class- sar- eukaryotes
order- straemenopiles
blastocystis hominis host
- ppl, pigs, mammals
- chickens, birds
- amphibians, reptiles
blastocystis hominis lifecycle
Thick wall cyst found in human stool -> Infect epithelial cells of digestive tract & multiply asexually -> Vacuolar form makes multivacuolar form -> Precyst -> Thin walled cyst (autoinfection)
blastocystis hominis dx
maybe or maybe not symptomatic infection in humans
spectrum from watery d+ -> abd pain -> flatulence
blastocystis hominis transmission
- cysts in stool
- fecal-oral via contaminated food/ water
blastocystis hominis life cycle fun fact
not for sure
pythium insidosum taxonomy
kingdom- protistis
class- sar- eukaryotes
order- straemenopiles
pythium insidosum growth
hyphae like growth phases, aseptae, not a fungus
pythium insidosum host
- horse, dog, cat
- ppl
- cow, sheep, goat
- birds and bears
pythium insidosum flagella
- tinsel- anterior flagellum
- whiplast- posterior flagellum
pythium insidosum life cycle
- oogamy sexual process
- biflagellate zoospores in we environment, wet soil, vegetation
pythium insidosum tx
- antifungals dont work well because lack ergosterol in cell membrane (20% therapeutic if used long term)
- surfical resection and chemo
pythium insidosum transmission
- chemotaxis towards decaying or injured tissue
- extend highly invasive into host tissue on contact
- not transmissible between nosts
pythium insidosum seasons
dont survive winter
pythium insidosum organ effected in who
- Cutaneous form more in horses (kunkers, draining fistulas w/ necrotic yellow grey material)
- GI form more in dogs (vomiting, wt loss, D, abd masses)
pythium insidiosum dx
- Lesions on body parts that were in direct contact w/ water that zoospores swam into
- Mechanical damage, inflamm, edema, degradation, necrosis, arterial occlusion
pythium insidiosum geography
tropical, subtropical, temperate regions worldwide
entamoeba histolytica taxonomy
kingdom- protistis
class- sar- eukaryotes
order- straemenopiles
entamoeba histolytica dx
- eat rbcs and can penetrate mucosa and cause death
- d+, liver abscess, death
entamoeba histolytica lifecycle
- excystation in si after ingestion then trophozoites migrate to lg intestine, mult then exit host in feces
entamoeba histolytica transmission
- cysts and trophozoites passed in feces
entamoeba dispar taxonomy
kingdom- protistis
class- sar- eukaryotes
order- straemenopiles
entamoeba dispar dx
no disease or death
acanthamoeba taxonomy
kingdom- protistis
class- sar- eukaryotes
order- straemenopiles
acanthamoeba host
- humans, dogs, cats
acanthamoeba id
- acanthopodia
- pseudopodia w/ sm filamentous protrusions
acanthamoeba transmission
cyst stage in through nose, eyes, broken skin
acanthamoeba dx
- keratitis (can live in contact lens solution)
- granulomatous amebic encephalitis (transported to brain via hematogenous spread)
acanthamoeba found where
free living in various aquatic environment
balamuthia mandrills taxonomy
kingdom- protistis
class- sar- eukaryotes
order- straemenopiles
balamuthia mandrillaris host
- zoo animals
- humans
balamuthia mandrillaris transmission
cyst stage through nose, eyes, broken skin
balamuthia mandrillaris effects who
- healthy individuals mainly the young
balamuthia mandrillaris dx
- chronic granulomatous amebic encephalitis in human (chronic, progressive, necrotizing)
- necrotizing skin lesions
- fatal
balamuthia mandrillaris found where
- south Carolina
- texas
- Mexico
- venezuela
blastocystis hominis tx
no proven tx infection clears on its own
what was most common thing found in human fectals
blastocystis
balamuthia mandrillaris taxonomy
kingdom- protistis
class- sar- eukaryotes
order- straemenopiles