Parasite Characteristics & Buzzwords

darodri6's version from 2016-03-13 03:28

Buzzwords & Key Characteristics

ParasiteSubspeciesKey characteristic(s)Buzzwords
CestodeT. soliumScolex has a double crown of hooks (aka armed rostellum)Undercooked PORK, proglottids (eggs)
CestodeT. saginataScolex = Head (used to adhere to mucosal surface in human host), Proglottids = a set of reproductive organs within the Strobila (mult. set of rep. organs). Gravid = shelled embryos presents within proglottids. Eggs = shelled embryos, which are fertilized.Uncooked BEEF, proglottids
CestodeE. granulosaSmallest tapewormSheepdogs in New Zealand, Hyatid Cysts, highly infectious
CestodeD. latumScolex = adhesion (brothria = two bilateral grooves used for adhesion), Strobila = reproductive proglottids which releases eggsUndercooked SEAFOOD, or picked fresh-water fish, B12 deficiency, LARGE tapeworm
TrematodesS. mansonimale folds its body around female for permanent copulation, eggs are highly immunogenic (inflammation), reproduction in mesenteric veins, Distome, hermanthrodite (both sexes), specialized for vascular existence, ROSE-THORN egg on blood smear, Biomphalaria = snail hostPortal hypertension, intestinal polyps, snails
TrematodesS. japonicumMale folds its body around female for permanent copulation, eggs are highly immunogenic (inflammation), NO THORN on blood smear, Biomphalaria= snail hostPortal Hypertension, intestinal polyps, snails
TrematodesS. haematobiumApical horn on blood smear, Biomphalaria = snail hostBladder
TrematodesS. dermatitisHuman is incidental host, BUT infection with this does gear up our immune response to Shistomiasis
NematodeA. lumbricoidesnon-segmented, circular, complete digestive systemmost common worm infection, highly prevalent in tropical areas, cuticle, cryptobiosis (replication can be dormant if needed), left to right movement, L3 is infective form, SOUTHEASTERN US, sudden asthma following trip to area w/poor sanitation
NematodeWuchereria BancroftiArthropod-borne, endemic in tropical areasElephantiasis, lymphatic lovers, migrating worm-like eggs (microfilariae), migrate in and out of body in daily cycles, day core, night skin for mosquito pick up (mosquito feeds at night)
NematodeTrichinella spiralisTwo phases to life cycle of Trichinella spiralis:
Enteral Phase: (Enteron = intestine) is transitory and usually asymptomatic
Parenteral Phase: is marked by larval migration and excystment

NOT host-specific!
Eating PORK or WILD GAME, most common parasitic cause of MYOCARDITIS, Intramulitcellular Parasite (penetrate several columnar epithelial cells of SI microvilli), 4 weeks of life,
GiardiaG. lambliaFlagellated Protozoan, 4 pairs of “flagella” (karymastigont which is a stripped down flagellum associated with nucleus), two equal size nuclei (split in center), no mitochondria, no Golgi, Adhesive (sucking disk) disk, Trophozoite (free living or parasitic form), cysts (Inactive form)Owl eye like appearance, tear drop shape, Lactose intolerance like, infections of Campers, travellers (water in foreign places), MSM, Daycare centers, children more susceptible, resistant Cl- (Australian water supply), Fecal-Oral life cycle,
TrypanosomaT.b. gambiense/rhodesienseSection Salivaria, Tryptomastigote (rest of life cycle), Epimastigote (salivary glands), Heteroxenous, kinetosome, axoneme, kDNA, kinetoplast (minicircles and maxicircles), cytoskeleton, paraxial rods, undulating membrane, glycocalyx, glycosomeKinetoplast lies near kinetosome, doctors without borders, Adults=breed, young=eat
TrypanosomaT. cruzi (South America)Section Sterocoraria, amastigote form in blood, forms pseudocysts in tissue that pop and release parasitesKinetoplast lies near kinetosome, doctors without borders, pseudocysts
ToxoplasmaT ghondicomplex life cycles, can get everywhere#3 food related death, ring-enhancing lesions, history of eating raw or partially cooked meat, sporoziotes last for years
PlasmodiumP. vivax, P. ovale, P. malariae, P. falciporumNo conoid, no Syzygy, motile zygote=ookinete, heteroxenous, merozoites in vertebrate host and sporozoites in invertebrate hostGiemsa stained shows banana-shaped gaemtocytes (Falciparum), rings in RBCs, Sickle cell gene is protective