Blastocystis hominis

an intestinal protozoan found in a vast array of animals, including humans.

Blastocystis hominis

In B. Hominis, It was previously classified as yeast under the genus

Schizosaccharomyces

while other taxonomists suggested that it was related to_______based on its glistening appearance in a wet mount and the absence of any organelle of locomotion.

Blastomyces

What parasite that the organism does not grow on fungal culture media. It responds to anti-protozoal drugs.

Blastocystis hominis

Optimal growth in the presence of bacteria in b. Hominis

37°C

It completed a study of the small subunit rRNA (SSUrRNA) gene of the organism

Silberman et al

the results showed that it belongs to an informal group Called_______which is a recently recognized group of microscopic parasites.

StramenophileS

What parasite that the life cycle is unclear

Blastocystis hominis

It has been proposed that the life cycle begins with ingestion of What stage that it contaminated food or water

Cyst

Multiplication of B. hominis is by What?

binary fission

B. hominis is known to occur in four morphological forms What are those?

• vacuolated

• ameba- like

• granular

• multiple fission

the most predominant forms in fecal specimens

Vacuolated forms

The vacuolar forms are considered to be the main type of Blastocystis that cause

diarrhea

This studies have revealed that the ameboid forms predominated in isolates from symptomatic cases.

Tan and Suresh

are multinucleated and are mainly observed from old cultures

Granular forms

Infection with B. hominis is called

blastocystosis

B. hominis as a cause of

gastrointestinal