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Microbiology 1 - Protista

Protista 1 celled, eukaryotic, once a phylum (protozoa) of animal kingdom
3 kinds of Protista Plant, Fungus, Animal
Plant autotrophic (self-feeding) & have green pigment chlorophyll
Fungus saprophytic (feed on dead/decaying organic matter)
Animal heterotrophic (other feeding), parasites
Animal divided by motility, nutrition, reproduction
4 animal groups sacrodines; mastigophora; ciliophora; apicomplexa/sporazoa
Sarcodines amoebas
2 forms of sarcodines trophozoite & cyst
trophozoite free floating
cyst form dormant encysted
sarcodine motility pseudopodia (foot-like projection of cytoplasm)
sarcodine nutrition phagocytosis
sarcodine reproduction binary fission
Pathogenic sarcodines acanthamoeba, naegleria fowler, entamoeba histolytica, dientamoeba fragilis
acanthamoeba opportunists
ananthameoba cause eye infection
A. castella affects pancreas, skin
A. polyphaga hot tub associated, can be deadly
A. polyphaga causes eye, liver, kidney, brain & lung infections
naelgeria fowler previously known as Gruberi
naelgeria fowler transmitted via swimming
naelgeria fowler causes primary meningio encephalitis (PAME) - deadly, not common
entamoeba histolytica causes amoebic dysentery from ingesting cysts in water/food
amoebic dysentery Sx: abdominal tenderness, 30+bms/day, severe dehydration, invades liver, lung, rarely brain
amoebic dysentery Dx: blood filled cysts in stool & immunodiagnosis
Dientamoeba Fragilis chronic, mild diarrhea
Created by: JYarger