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Detection and identification of entamoeba species in stool samples by a reverse line hybridization assay.


ABSTRACT: Classically, detection of Entamoeba histolytica is performed by microscopic examination for characteristic cysts and/or trophozoites in fecal preparations. Differentiation of E. histolytica cysts and those of nonpathogenic amoebic species is made on the basis of the appearance and the size of the cysts. However, by classical means objective tools for confirmation and quality control do not exist. Therefore, a reverse line blot hybridization assay was developed to detect a variety of Entamoeba species and genetic variants known to infect humans. The assay was performed after amplification with general Entamoeba-specific primers. The assay could identify four genetic variants of Entamoeba polecki-like cysts as well as E. histolytica, Entamoeba dispar, Entamoeba hartmanni, Entamoeba moshkovskii and Entamoeba coli and even mixed infections in a range of controls and fecal samples. This technique can be used as an additional standard for diagnosis, epidemiology, and quality control for amoebic infections.

SUBMITTER: Verweij JJ 

PROVIDER: S-EPMC262518 | biostudies-literature | 2003 Nov

REPOSITORIES: biostudies-literature

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Detection and identification of entamoeba species in stool samples by a reverse line hybridization assay.

Verweij Jaco J JJ   Laeijendecker Daphne D   Brienen Eric A T EA   van Lieshout Lisette L   Polderman Anton M AM  

Journal of clinical microbiology 20031101 11


Classically, detection of Entamoeba histolytica is performed by microscopic examination for characteristic cysts and/or trophozoites in fecal preparations. Differentiation of E. histolytica cysts and those of nonpathogenic amoebic species is made on the basis of the appearance and the size of the cysts. However, by classical means objective tools for confirmation and quality control do not exist. Therefore, a reverse line blot hybridization assay was developed to detect a variety of Entamoeba sp  ...[more]

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