Abstract
We have developed a reliable method for PCR-based genotyping of Entamoeba histolytica based on variation in the numbers of short tandem repeats that are linked to tRNA genes in this species. Species-specific primer pairs were designed that differentiate E. histolytica from E. dispar as well as that reveal intraspecies PCR product length polymorphisms. The primers were tested with samples from different parts of the world, and DNA was extracted from cultured cells as well as liver abscess pus and feces by various methods. We now have the tools necessary to investigate a possible link between parasite genotype and the outcome of infection with Entamoeba histolytica, as well as other aspects of the organism's epidemiology.
Publication types
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Evaluation Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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DNA Primers
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DNA, Protozoan / analysis
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Dysentery, Amebic / diagnosis
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Dysentery, Amebic / parasitology*
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Entamoeba histolytica / classification*
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Entamoeba histolytica / genetics
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Entamoeba histolytica / isolation & purification
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Entamoebiasis / diagnosis
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Entamoebiasis / parasitology*
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Genotype
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Humans
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Molecular Sequence Data
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Polymerase Chain Reaction / methods*
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RNA, Transfer / genetics*
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Sequence Analysis, DNA
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Species Specificity
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Tandem Repeat Sequences / genetics*
Substances
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DNA Primers
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DNA, Protozoan
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RNA, Transfer
Associated data
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GENBANK/AY842959
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