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Diagnosis is based on detection of trophozoites in stool samples from symptomatic patients or in tissue collected during endoscopy. Cysts are less frequently encountered, and are most likely to be recovered from formed stool. Balantidium coli is passed intermittently and once outside the colon is rapidly destroyed. Thus stool specimens should ...
Balantidium coli has two developmental stages, a trophozoite stage and a cyst stage. In trophozoites, the two nuclei are visible. 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.
- B. coli
- Balantidiidae
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Balantidium has a simple life cycle, as follows: dormant cyst to trophozoite and trophozoite to cyst. Transmission is direct, from a contaminated water or food supply to humans (Fig. (Fig.1). 1). No intermediate host, as occurs with many other parasitic species, is needed.
- Frederick L. Schuster, Lynn Ramirez-Avila
- 10.1128/CMR.00021-08
- 2008
- Clin Microbiol Rev. 2008 Oct; 21(4): 626-638.
Jan 5, 2022 · The ciliate Balantioides coli (syn. Balantidium coli) is the largest human parasitic protozoa, and can infect a wide range of hosts, with swine being the main reservoir. The parasite has a direct life cycle, with a vegetative form, the trophozoite, inhabiting the host intestine, and a resting cyst that is released into the environment in faeces.
Aug 25, 2023 · 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 humans). B coli is known to parasitize the colon, and pigs may be its primary reservoir. Trophozoite of Balantidium coli in colon.
