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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

A molecular biologic study of Enterocytozoon bieneusi in HIV-infected patients in Lima, Peru.

A cross-sectional study was conducted to examine the genotype distribution of Enterocytozoon bieneusi in HIV-infected patients who visited two government hospitals in Lima, Peru from January 2000 through March 2003. Microsporidia were detected by microscopy in 105 (3.9%) of 2,672 patients. A total of 212 stool samples from 89 microsporidia-positive patients were genotyped by sequence analysis of the internal transcribed spacer (ITS) region of the rRNA gene. A 392-bp fragment containing the complete ITS region was amplified and sequenced. Multiple alignments and phylogenetic analysis of these ITS sequences identified 11 distinct genotypes of E. bieneusi (Peru-1 to Peru-11), 6 of which were new genotypes not reported before. The remaining 5 genotypes had nucleotide sequences identical to those previously reported in humans, cats, pigs, and wild mammals. All the 11 E. bieneusi-genotypes identified are genetically related, and members of the group have been previously found in humans, domestic animals, and some wild mammals. Thus, there is a high genetic diversity of E. bieneusi in humans in Peru, and zoonotic transmission is possible if humans are in close contact with infected animals.[1]


  1. A molecular biologic study of Enterocytozoon bieneusi in HIV-infected patients in Lima, Peru. Sulaiman, I.M., Bern, C., Gilman, R., Cama, V., Kawai, V., Vargas, D., Ticona, E., Vivar, A., Xiao, L. J. Eukaryot. Microbiol. (2003) [Pubmed]
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