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Balantidium coli is a large ciliated protozoan that causes balantidiasis, a parasitic infection of the large intestine and appendix. Learn about its life cycle, transmission, hosts, geographic distribution, and clinical presentation.
Balantidium coli has two developmental stages, a trophozoite stage and a cyst stage. In trophozoites, the two nuclei are visible. The macronucleus is long and sausage-shaped, and the spherical micronucleus is nested next to it, often hidden by the macronucleus.
Oct 23, 2023 · Trophozoites undergo encystation to produce infective cysts. Some trophozoites invade the wall of the colon and multiply; some return to the lumen and disintegrate. Mature cysts are passed in the stool and can remain viable for up to two weeks in the environment [ 8 ].
Jan 5, 2022 · The ciliate Balantioides coli is a human enteric parasite that can cause life-threatening infections. It is a food- and waterborne parasite, with cysts being the infective stage.
- 10.1016/j.fawpar.2021.e00143
- 2022/03
Aug 25, 2023 · Background. Balantidiasis (also known as balantidiosis) is defined as large-intestinal infection with Balantidium coli, which is a ciliated protozoan (and the largest protozoan that infects...
Balantidium coli exists in either of two developmental stages: trophozoites and cysts. [3] . In the trophozoite form, they can be oblong or spherical, and are typically 30 to 150 μm in length and 25 to 120 μm in width. [4] .
