How is Endolimax transmitted?
Co-infection of these organisms occurs due to their identical mode of transmissions, via the fecal-oral route and ingestion of cysts from contaminated water supplies.
How are trophozoites transmitted?
Fecal-oral transmission involves the ingestion of food or water contaminated with cysts. After ingestion by an appropriate host, the cysts transform into trophozoites which exhibit an active metabolism and are usually motile. The parasite takes up nutrients and undergoes asexual replication during the trophic phase.
What is Endolimax nana trophozoites?
Endolimax nana (Fig. 4-1) is the smallest of the intestine-dwelling amoebae infecting humans, its trophozoite averaging only 8 μm in diameter (range, 6-15 μm). The trophozoite lives in the host’s colon and is generally considered to be nonpathogenic.
How are trophozoites treated?
Nitroimidazole derivatives are the drugs of choice for treatment of amoebic colitis, as they are very effective against the trophozoite form of the parasite (metronidazole 750–800 mg three times daily for 5–10 days, or tinidazole 2 g daily for 3 days).
Is Endolimax nana pathogenic?
Entamoeba coli, E. hartmanni, E. polecki, Endolimax nana, and Iodamoeba buetschlii are generally considered nonpathogenic and reside in the large intestine of the human host.
Where does Endolimax nana come from?
Endolimax is a genus of amoebozoa that are found in the intestines of various animals, including the species E. nana found in humans. Originally thought to be non-pathogenic, studies suggest it can cause intermittent or chronic diarrhea.
Does Endolimax nana have cyst?
Cysts of Endolimax nana vary from spherical to ellipsoidal in shape and measure 5–10 µm. Mature cysts have four small nuclei with large, usually centrally located karyosomes and no peripheral chromatin.
What do you mean by trophozoites?
Definition of trophozoite : a protozoan of a vegetative form as distinguished from one of a reproductive or resting form.