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• W2509115792 abstract "Background: Detection of fastidious enteropathogenic bacteria in fecal samples of patients with gastroenteritis is a challenge in clinical microbiological laboratories. Objectives: The aim of this study was to compare the detection limits of the PCR and culture methods for the diagnosis of Campylobacter spp., Yersinia spp., Clostridium perfringens, and Clostridium difficile in human stool samples. Methods: Healthy human stool and sterile phosphate-buffered saline (PBS) samples were separately spiked with 10-fold dilutions of C. jejuni, C. difficile, Y. enterocolitica, and C. perfringens reference strains to obtain final concentrations of 101 - 108 colony forming units (CFU) per gram. Dilutions of each suspension were inoculated onto specific culture media and colony counts were determined. Polymerase chain reaction (PCR) was carried out on DNA extracts of each dilution using specific primers. All of the assays were performed in two separate replicas. Results: In the cases of the culture and PCR assays, detection limits of 101 and 102 CFU/g for C. difficile, 2 × 104 and 2 × 104 CFU/g for C. perfringens, 104 and 102 CFU/g for C. jejuni, and 102 and 104 CFU/g for Y. enterocolitica, respectively, were obtained. In the cases of the spiked PBS samples, a detection limit of 101 for C. jejuni and Y. enterocolitica was obtained using the culture method. While 102 -fold higher sensitivity was observed for C. jejuni via PCR compared with the culture assay, equal (C. perfringens) or lower sensitivity limits (C. difficile and Y. enterocolitica) were detected for the spiked stool samples with other bacteria. Conclusions: These results showed differences in the bacterial culture and PCR methods for quantitative detection of fastidious bacteria in human stool samples. However, a bacterial load of 104 CFU per gram of stool was measured as a sufficient amount for detection of the fastidious bacteria by either culture or PCR assays. More suitable PCR methods could be used for rapid diagnosis of the slow-growing bacteria in the patients’ stool samples." @default.
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• W2509115792 date "2016-09-04" @default.
• W2509115792 modified "2023-09-26" @default.
• W2509115792 title "Comparison of the Detection Limits of the Culture and PCR Methods for the Detection of Clostridium difficile, Clostridium perfringens, Campylobacter jejuni, and Yersinia enterocolitica in Human Stool" @default.
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• W2509115792 doi "https://doi.org/10.5812/pedinfect.38888" @default.
• W2509115792 hasPublicationYear "2016" @default.
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