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  1. Endolimax nana. 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. According to some surveys, prevalence may be as high as 30% in some ...

  2. Oct 23, 2023 · INTRODUCTION. Several nonpathogenic protozoa inhabit the intestinal tract and may be identified in stool specimens sent to the clinical laboratory for ova and parasite examination [].Since these nonpathogenic parasites can be reported by the diagnostic laboratory, it is important to be able to distinguish between organisms that require treatment and organisms that do not.

  3. Trophozoites can spread via the portal circulation and cause necrotic liver abscesses. Infection may spread by direct extension from the liver to the right pleural space, lung, or skin, or rarely through the bloodstream to the brain and other organs. ... Endolimax nana, and Iodamoeba bütschlii. Molecular analysis using polymerase chain ...

  4. Nov 4, 2015 · Of the so-called nonpathogenic intestinal protozoa, Endolimax nana belongs to the ones least well described. Most data on E. nana have emerged from general surveys of intestinal parasites in selected cohorts and mostly in the absence of any particular focus on Endolimax.Hence, the genus of Endolimax remains largely unexplored in terms of morphology, taxonomy, genetic diversity, host ...

  5. Endolimax nana (Fig. 4-1) ... Although trophozoites can be observed in stool preparations (Figure 12), especially in diarrheic samples, it is the cyst stage that is moderately durable in the environment and can withstand moderate putrefaction and desiccation. The cyst stage is transmitted through fecal contamination of food or drink.

  6. Endolimax nana trophozoites measure 6 to 12 µm and possess a single nucleus with a characteristically large, irregularly shaped, blot-like karyosome. The nucleus has no peripheral chromatin. Their cytoplasm is granular and often highly vacuolated. Trophozoites of E. nana can be difficult to distinguish from those of Iodamoeba buetschlii.

  7. en.wikipedia.org › wiki › EndolimaxEndolimax - Wikipedia

    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. Additionally, it is very significant in medicine because it can provide false positives for other tests, notably the similar species Entamoeba histolytica ...

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