MMI133 Lecture Notes - Lecture 6: Chagas Disease, Trematode Life Cycle Stages, Schistosoma Japonicum

• School: University of Alberta
• Department: Medical Microbiology and Immunology
• Course: MMI133
• Professor: Judy Gnarpe

Document Summary

Parasites: protozoa: one-celled eukaryotes, metazoa: multicellular animals (helminths, ectoparasites. O(cid:373)e ha(cid:448)e (cid:862)(cid:272)(cid:455)st(cid:863) for(cid:373) (cid:449)ith a tough prote(cid:272)ti(cid:448)e la(cid:455)er - protection from inhospitable environments. Gro(cid:449)i(cid:374)g for(cid:373) i(cid:374) (cid:373)a(cid:374)(cid:455) spe(cid:272)ies (cid:272)alled (cid:862)trophozoite(cid:863) C(cid:455)st for(cid:373) (cid:373)a(cid:455) also (cid:271)e (cid:272)alled a(cid:374) (cid:862)oo(cid:272)yst(cid:863) in some types of protozoa e. g. cryptosporidium. Protozoans to know: entamoeba histolytica, giardia lamblia, trichomonas vaginalis, acanthamoeba, cryptosporidium, toxoplasma gondii, trypanosoma, leishmania, plasmodium. Primary food: red blood cells (rbc)- ulcer formation. Both trophozoite and cyst forms exist: *cysts high degree of resistance to chlorine. Flagellate; causative age(cid:374)t of giardiasis, (cid:862)(cid:271)ea(cid:448)er fe(cid:448)er(cid:863) intestinal upsets, flatulence, nausea, abdominal cramps, diarrhea cyst and trophozoite: *cysts hardy, high resistance to chlorine can be treated. No cyst stage, person to person infection -transmission sexual found in vagina and male urethra intense itching, inflammation of tissues can be treated. Grows in water, exists as cyst form in dust. Eye loss outcome of infection cyst and trophozoite stage in humans important for contact lens wearers.