Flashcards in Cestode Infections Deck (9)
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
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
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