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  1. Chilomastix mesnili is a nonpathogenic flagellate that resides in the cecum and/or colon and is often described as a commensal organism. It can be transmitted by ingestion of cysts or trophozoites in contaminated water, food, or feces. Learn more about its life cycle, geographic distribution, clinical presentation, and laboratory diagnosis.

  2. Chilomastix mesnili is a non-pathogenic [1] member of primate gastrointestinal microflora, commonly associated with but not causing parasitic infections. It is found in about 3.5% of the population in the United States. In addition to humans, Chilomastix is found in chimpanzees, orangutans, monkeys, and pigs. It lives in the cecum and colon.

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  4. May 3, 2016 · Chilomastix mesnili: 6-24 µm. Usual range, 10-15 µm. Pear shaped. Stiff, rotary. 1 Not visible in unstained mounts. 3 anterior. 1 in cytosome. Prominent cytostome extending 1/3-1/2 length of body. Spiral groove across ventral surface. Giardia duodenalis: 10-20 µm. Usual range, 12-15 µm. Pear shaped. “Falling leaf.” 2 Not visible in ...

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    The flagellates Enteromonas hominis, Retortamonas intestinalis, and Pentatrichomonas hominis are considered non-pathogenic. These are less frequently encountered than Chilomastix mesnili, another non-pathogenic flagellates. The presence of cysts and/or trophozoites in stool indicates exposure to fecal contamination.

    Both cysts and trophozoites of Enteromonas hominis and Retortamonas intestinalis are shed in feces; only trophozoites of Pentatrichomonas hominis (no known cyst stage) are shed in feces . Infection occurs after the ingestion of cysts (E. hominis, R. intestinalis) or trophozoites (P. hominis) in fecally contaminated food or water, or on fomites. Exc...

    Humans are the primary host for all three of the discussed flagellates. Occasionally these species are found in apes and monkeys.

    Non-pathogenic flagellates occur worldwide, and are more prevalent in areas with inadequate sanitation leading to fecal contamination. Retortamonas intestinalis is the least frequently encountered among the three species discussed here.

  5. Chilomastix bettencourti is a flagellate enteric protozoan parasite of mice ( Figure 3.4.2 ). It occurs in the lumen of the caecum and ascending colon, where it can be found in two forms, a cyst and a trophozoite [20]. Cysts are smaller than trophozoites, which measure approximately 15 μm × 7 μm. Trophozoites are pear-shaped, with flagella ...

  6. Chilomastix mesnili is a nonpathogenic intestinal commensal of humans. The trophozoite is pear-shaped, usually 10 to 15 μm long, with a large anterior cytostome, three forward-directed flagella, and a sharply pointed posterior end. The organism also occurs as a lemon-shaped, uninucleate cyst 7 to 9 μm long .

  7. › wiki › ChilomastixChilomastix - Wikipedia

    The life cycle of Chilomastix lacks an intermediate host or vector. Chilomastix has a resistant cyst stage responsible for transmission and a trophozoite stage, which is recognized as the feeding stage. Chilomastix mesnili is one of the more studied species in this genus due to the fact it is a human parasite. Therefore, much of the information ...

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