Where is Fasciolopsis buski found in the body?
Fasciolopsis buski is the only species included in the genus Fasciolopsis. It is a trematode parasite commonly known as the giant Asian intestinal fluke, due to its large size, its geographical distribution restricted to Asia, and its location within the host’s body confined to the intestine.
What disease does Fasciolopsis buski cause?
Fasciolopsiasis is infection with the intestinal fluke Fasciolopsis buski, which is acquired by eating aquatic plants. Flukes are parasitic flatworms that infect various parts of the body (blood vessels, gastrointestinal tract, lungs, liver) depending on the species.
Which is the infective stage of Fasciolopsis buski?
Immature eggs are discharged into the intestine and stool . Eggs become embryonated in water , eggs release miracidia , which invade a suitable snail intermediate host . In the snail the parasites undergo several developmental stages (sporocysts , rediae , and cercariae ).
How do you diagnose Fasciolopsis buski infection?
Diagnosis of fasciolopsiasis is made by finding eggs or, less commonly, adult worms in the feces. The eggs are indistinguishable from those of Fasciola hepatica. Treatment of fasciolopsiasis is with praziquantel 25 mg/kg orally 3 times a day for 1 day.
Does Fasciolopsis buski reproduce asexually?
Digenean trematodes have sexual reproduction in their definitive hosts (e.g. human or mammals) and asexual reproduction in their intermediate hosts (snail). Their life cycles are complex and involve one or more intermediate hosts (the first always being a snail) and several morphological stages.
How are trematodes diagnosed?
Detection of antigen in the stool (coproantigen) is a nonmicroscopic method of diagnosis for intestinal trematodes. An enzyme-linked immunosorbent assay (ELISA) using a monoclonal antibody to an 89-kd antigen of O viverrini has been used to detect coproantigen in the stool of individuals with O pisthorchis infection.
How do you prevent Buski Fasciolopsis?
How can fasciolopsiasis be prevented?
- Cook all aquatic plants well before eating them (in boiling water).
- In endemic areas, prevent fecal contamination (from humans or pigs) of water where aquatic plants are grown. Do not feed raw aquatic plants to pigs.
How do you get rid of intestinal flukes?
Praziquantel 10-20 mg/kg as a single dose or 25 mg/kg 3 times a day is the recommended treatment for intestinal flukes (including F buski infection). It should be taken with liquids during a meal.
What is the mode of transmission of Fasciolopsis buski?
No, Fasciolopsis is not transmitted directly from human to human. Humans (and pigs) pass eggs in their feces, which develop in water and infect snails as intermediate hosts. After further development, the parasites leave the snail intermediate host and encyst on water plants.
What is the infective stage of Fasciola hepatica?
Metacercariae are quiescent infective stages which can survive on aquatic vegetation or in water for several weeks. Mammals become infected when they ingest metacercariae with food or water (many human infections have been linked to the consumption of watercress).
How does intestinal fluke infect human body?
Metacercariae infect humans after ingestion of raw or undercooked fish. The flukes then invade the mucosa of the small intestines, causing inflammation and ulcerations. Flukes eventually become encapsulated. See the image below.
What stage of the trematodes swims in the water?
The hatchling is called a miracidium, a free-swimming, ciliated larva. Miracidia will then grow and develop within the intermediate host into a sac-like structure known as a sporocyst or into rediae, either of which may give rise to free-swimming, motile cercariae larvae.
Can you tell the difference between Fasciola hepatica and f.buski?
The eggs of F. buski can be difficult to distinguish from Fasciola hepatica, although the abopercular end of the latter often has a roughened or irregular area. Figure A: Egg of F. buski in a unstained wet mount. Figure B: Egg of F. buski in a unstained wet mount.
How big does a Fasciolopsis buski adult get?
Fasciolopsis buski adults. Adults of F. buski measure 20-75 mm long and have poorly-developed oral and ventral suckers. Adults reside in the intestine of the mammalian host. Figure B: Adult fluke of F. buski.
Is there a cure for Fasciolopsis buski egg?
Fasciolopsiasis can be prevented by cooking aquatic plants well before eating them. Fasciolopsis is found in south and southeastern Asia. Fasciolopsiasis is treatable. Image: Left: Fasciolopsis buski egg in an unstained wet mount.
What kind of snail does Fasciolopsis buski live in?
Intermediate hosts of F. buski. Fasciolopsis buski requires a snail intermediate host for completion of its life cycle. The snails used by F. buski are small planorbid snails in the genera Hippeutis and Segmentina. Figure A: Snail in the genus Hippeutis, an intermediate host for F. buski.
