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- Airell, A, et al.
(författare)
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Chlamydia trachomatis PCR (Cobas Amplicor) in women: endocervical specimen transported in a specimen of urine versus endocervical and urethral specimens in 2-SP medium versus urine specimen only
- 2000
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Ingår i: International journal of STD & AIDS. - : SAGE Publications. - 0956-4624 .- 1758-1052. ; 11:10, s. 651-658
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Tidskriftsartikel (refereegranskat)abstract
- The sensitivity of Roche Cobas Amplicor Chlamydia trachomatis polymerase chain reaction (PCR) including the internal control (IC) programme to identify inhibition, was investigated on 3 different samples from women: (1) swab samples from the urethra and the cervix pooled in 2-SP transport medium, (2) swab sample from the cervix transported in a urine sample from the same patient, and (3) urine sample alone. Out of the 2412 patients, 193 (8.0%) were chlamydia positive and in 14 of these the results showed discrepancies between sampling methods. The sensitivity of PCR on urethra/cervix, urine/cervix and urine was 98.4% (190/193), 97.9% (189/193) and 93.3% (180/193) respectively. The higher sensitivity of PCR on urethra/cervix and urine/cervix as compared with urine alone was statistically significant. Without the IC, the sensitivity of PCR on urethra/ cervix, urine/cervix and urine would have been 95.9% (185/193), 94.8% (183/193) and 90.7% (175/193) respectively. Factors influencing the rate of inhibition were also studied.
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| 2. |
- Lindback, E., et al.
(författare)
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DNA gyrase gene in Neisseria gonorrhoeae as indicator for resistance to ciprofloxacin and species verification
- 2005
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Ingår i: International Journal of STD and AIDS (London). - : SAGE Publications. - 0956-4624 .- 1758-1052. ; 16:2, s. 142-147
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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