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| Content Provider | PubMed Central |
|---|---|
| Author | Shah, Preetam H. Macfarlane, Ryan C. Bhattacharya, Dhruva Matese, John C. Demeter, Janos Stroup, Suzanne E. Singh, Upinder |
| Copyright Year | 2005 |
| Abstract | Variable phenotypes have been identified for Entamoeba species. Entamoeba histolytica is invasive and causes colitis and liver abscesses but only in ∼10% of infected individuals; 90% remain asymptomatically colonized. Entamoeba dispar, a closely related species, is avirulent. To determine the extent of genetic diversity among Entamoeba isolates and potential genotype-phenotype correlations, we have developed an E. histolytica genomic DNA microarray and used it to genotype strains of E. histolytica and E. dispar. On the basis of the identification of divergent genetic loci, all strains had unique genetic fingerprints. Comparison of divergent genetic regions allowed us to distinguish between E. histolytica and E. dispar, identify novel genetic regions usable for strain and species typing, and identify a number of genes restricted to virulent strains. Among the four E. histolytica strains, a strain with attenuated virulence was the most divergent and phylogenetically distinct strain, raising the intriguing possibility that genetic subtypes of E. histolytica may be partially responsible for the observed variability in clinical outcomes. This microarray-based genotyping assay can readily be applied to the study of E. histolytica clinical isolates to determine genetic diversity and potential genotypic-phenotypic associations. |
| Related Links | http://dx.doi.org/10.1128/EC.4.3.504-515.2005 |
| Starting Page | 504 |
| File Format | |
| ISSN | 15359786 |
| e-ISSN | 15359786 |
| Journal | Eukaryotic Cell |
| Issue Number | 3 |
| Volume Number | 4 |
| Language | English |
| Publisher | American Society for Microbiology |
| Publisher Date | 2005-03-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Microbiology |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Molecular Biology Microbiology |
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