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Flashcards in Cestode Infections Deck (9)
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1

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

2

What are the segments caused?

proglottids filled with eggs

3

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
2mm-2cm
form cysts

4

How does praziquantel work?

flatworm loses ability to resist digestion

5

How does Niclosamide work?

inhibits glucose uptake and oxidative phosphorylation

6

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

7

What is the life echinococcus lifecycle?

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

8

What are the symptoms of cystic echinococcis

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

9

What are the symptoms of Alveolar echinococcus

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