Parasites

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Author:
HuskerDevil
ID:
41450
Filename:
Parasites
Updated:
2010-10-11 18:14:12
Tags:
DPAP2012 Microbiology Parasitology
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Description:
Microbiology Parasitology
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  1. Protozoa
    Unicellular
  2. Intestinal protozoa
    • E. histolytica
    • Coccidia
    • Giardia lamblia
  3. Urogenital protozoa
    Trichomonas vaginalis
  4. Blood and tissue protozoa
    • Toxoplasma gondii
    • Naegleria
    • Plasmodium
  5. Metazoa
    • Multicellular
    • Helminths
    • Nematodes (round worms)
    • Trematodes (flukes)
  6. E. histolytica
    • Intestinal protozoa
    • Cysts and sporozoite form
    • Tropical and subtropical
    • Countries without sanitation
    • Can be asymptomatic or BAD- liver, lungs, brain and heart
  7. Coccidia
    • Intestinal protozoa
    • Important AIDS pathogen
    • -Cryptosporidium parvum: water supplies, mild to severe (immunocomp)
    • -Isospora belli: like Giardia, mild to severe GI (immunocomp)
  8. Giardia lamblia
    • Flagellate
    • Cyst and trophozoite
    • GI: mild to severe malabsorption
    • Frothy greasy stool
  9. Trichomonas vaginalis
    • Urogenital protozoa
    • Sexual contact
    • Males: asymptomatic
    • Females: vaginitis, post-menstrual bleeding, strawberry cervix
    • No cyst stage
  10. Toxoplasma gondii
    • Blood and tissue protozoa
    • Cat feces
    • Most asymptomatic
    • Acute: flu-like symptoms
    • Congenital: if exposed during pregnancy, spontaneous abortion or CNS problems in neonate
    • Immunocompromised- reactivated, brain eye and lung.
  11. Naegleria
    • Blood and tissue protozoa
    • Free living amoeba- lakes
    • Acute meningoencephalitis: BAD especially in children
  12. Plasmodium
    • Blood and tissue protozoa
    • #1 cause of parasitic death in the world
    • -Malaria
    • -Bloodstream
  13. Helminths
    Can leave the GI tract, go to lungs, and be swallowed
  14. Enterobius vermicularis
    • Nematode (round worm)
    • Pinworms- children
    • Small white worm
    • Rectum itching- females come out at night and lay eggs
    • Can be asymptomatic
  15. Ascaris lumbricoides
    • Large worm (50 cm)
    • Most common helminth
    • Intestinal disease
    • Pulmonary disease
  16. Ancylostoma/Nectar
    • Hookworms- bloodsuckers
    • Dermatologic- penetrate intact skin
  17. Strongyloides Like hookworm- live in soil
    • Most likely to see in US
    • "ground itch" -skin penetration
    • Larvae secreted
    • Larva can enter circulation and live in gut
    • Transplant patients will be checked
  18. Trichinella spiralis
    • Uncooked pork
    • Cysts in muscle tissue
  19. Taenia
    • Tapeworm
    • Raw or undercooked meats
    • Cysts in brain

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