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Volume 60, Issue 10

Genotyping of from Brazilian leprosy patients suggests the occurrence of reinfection or of bacterial population shift during disease relapse Free

Abstract

We performed genotyping of present in skin biopsy samples that were collected during the first and the second disease occurrences from eight leprosy patients, seven of whom were diagnosed as suffering from disease relapse. Sequence analysis of part of the , , and genes did not show genetic change that supported the presence of drug-resistant bacilli. However, we observed a synonymous nucleotide change at position 297 of among five of these patients, one presenting C to T (CT) and four presenting T to C (TC) at this position. Additional genotyping by analysis of the four short tandem repeats GAA, GTA9, AT17 and TA18 showed that the single nucleotide polymorphism change was accompanied by a change in short tandem repeat genotype. Our data suggest that leprosy relapse in these patients, living in an area endemic for leprosy, could be caused by with a genotype different from the one that caused initial disease.

  • Received:
  • Accepted:
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© 2011 SGM
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2011-10-01
2024-04-19
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Genotyping of Mycobacterium leprae from Brazilian leprosy patients suggests the occurrence of reinfection or of bacterial population shift during disease relapse
J. Med. Microbiol. 60, 1441 (2011); https://doi.org/10.1099/jmm.0.029389-0
/content/journal/jmm/10.1099/jmm.0.029389-0
/content/journal/jmm/10.1099/jmm.0.029389-0
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