Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10890667 | Journal of Microbiological Methods | 2011 | 4 Pages |
Abstract
Detection and identification of bacterial etiology in urine is critical for accurate diagnosis and subsequent rational treatment of urinary tract infections (UTIs). Urine culture followed by a series of biochemical reactions is currently the standard method for detecting and distinguishing microorganisms associated with UTIs. The whole procedure commonly takes more than 24Â h. Here we developed a new system combining 16S rRNA gene broad-range PCR with pyrosequencing technology that allows for bacteria detection and identification in urine in 5Â h. To evaluate this system for rapid diagnosis of bacteriuria, 768 urine specimens were collected from patients with suspected UTIs and were tested side-by-side using standard urine culture-based identification method and the pyrosequencing method. The results from pyrosequencing correlated well with those from traditional culture-based identification method. The overall agreement between these two methods reached 98.0% (753/768). In addition, we tested the sensitivity of pyrosequencing method and determined that urine bacterial numbers as low as 104Â cfu/ml could be accurately detected and identified. In conclusion, compared with traditional biochemical method, the PCR-pyrosequencing system significantly improved the detection and identification of bacteriuria with shorter time, higher accuracy, and higher throughput, thus allowing earlier pathogen-adapted antibiotic therapy for patients.
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Authors
Jiangfeng Lu, Runliu Yu, Yihong Yan, Jing Zhang, Xuyi Ren,