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DNA gyrase gene in Neisseria gonorrhoeae as indicator for resistance to ciprofloxacin and species verification
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2005 (English)In: International Journal of STD and AIDS (London), ISSN 0956-4624, E-ISSN 1758-1052, Vol. 16, no 2, 142-147 p.Article in journal (Refereed) Published
Abstract [en]

We have identified a unique region of eight amino acids in the quinolone resistance-determining region in the gyrA gene in Neisseria gonorrhoeae as an indicator of resistance to fluoroquinolones. We sequenced that region by the Pyrosequencing(TM) technology in 46 N. gonorrhoeae strains and 11 urine samples positive in AMPLICOR(TM) N. gonorrhoeae polymerase chain reaction (Roche Diagnostics), with corresponding isolates of N. gonorrhoeae. The results showed that 28 samples with minimum inhibitory concentration (MIC) of ciprofloxacin > 1 mg/L had mutations in positions 91 and 95. Fifteen samples with MIC 0.125-1.0 mg/L had either one or both of the mutations. The 14 susceptible samples had no mutations. The target region also discriminates N. gonorrhoeae from other species of Neisseria. Our conclusion is that gyrA is an indicator of resistance to ciprofloxacin in N. gonorrhoeae and sequencing by Pyrosequencing technology is a suitable tool for analysis of DNA in urine samples.

Place, publisher, year, edition, pages
2005. Vol. 16, no 2, 142-147 p.
Keyword [en]
Neisseria gonorrhoeae, QRDR, gyrA, ciprofloxacin, Pyrosequencing technology, antibiotic susceptibility, quinolone resistance, sex workers, susceptibility, mutations, strains, fluoroquinolones, prevalence, bangladesh, emergence, dhaka
Identifiers
URN: urn:nbn:se:kth:diva-14559ISI: 000227267500011OAI: oai:DiVA.org:kth-14559DiVA: diva2:332600
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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