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Flashcards in Cestode Infections Deck (9)
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Taenia saginata/solium
1) How do you distinguish between the two
2) describe the life cycle
3) How do you treat

1) Beef - 4 large suckers on scolex
Pig - rostellum, two rows of large and small hooks (13 of each)
2)eggs passed into environment
cattle ingest vegetation
oncospheres in stomach/intestine and penetrate muscle
develop into cysticerci
Humans ingest infected meat, scolex attaches to epithelium
3) Praziquantel, Niclosamide


What are the segments caused?

proglottids filled with eggs


What is cysticercosis?
How are eggs activated
What is the size of cysticerci

When humans eat the eggs or proglottids. Eggs are activated by GI secretions and become oncospheres
form cysts


How does praziquantel work?

flatworm loses ability to resist digestion


How does Niclosamide work?

inhibits glucose uptake and oxidative phosphorylation


What are the four species of echinococcus
How are they diagnosed?
How is it treated?

granulosus, multilocularis, vogeli, oligarthrus
ultrasound, serological
PAIR (puncture, aspiration, injection, re-aspiration)
Albendazole, mebendazole, praziquantel


What is the life echinococcus lifecycle?

1) Adult in small intestine
2) embryonate egg in faeces
3) oncospheres hatch and penetrate intestinal wall


What are the symptoms of cystic echinococcis

slow growing, rupture of cysts can cause allergic reactions and death by anaphylactic shock


What are the symptoms of Alveolar echinococcus

larvae don't fully mature to cysts, form vesicles which invade and destroy neighbouring cells.
Signs of hepatic failure