Publication: Evaluation of multiplex PCR with enhanced spore germination for detection of clostridium difficile from stool samples of the hospitalized patients
Issued Date
2013-04-29
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ISSN
23146141
23146133
23146133
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2-s2.0-84876542592
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Mahidol University
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SCOPUS
Bibliographic Citation
BioMed Research International. Vol.2013, (2013)
Suggested Citation
Surang Chankhamhaengdecha, Piyapong Hadpanus, Amornrat Aroonnual, Puriya Ngamwongsatit, Darunee Chotiprasitsakul, Piriyaporn Chongtrakool, Tavan Janvilisri Evaluation of multiplex PCR with enhanced spore germination for detection of clostridium difficile from stool samples of the hospitalized patients. BioMed Research International. Vol.2013, (2013). doi:10.1155/2013/875437 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/31324
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Title
Evaluation of multiplex PCR with enhanced spore germination for detection of clostridium difficile from stool samples of the hospitalized patients
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Abstract
Clostridium difficile poses as the most common etiologic agent of nosocomial diarrhea. Although there are many diagnostic methods to detect C. difficile directly from stool samples, the nucleic acid-based approach has been largely performed in several laboratories due to its high sensitivity and specificity as well as rapid turnaround time. In this study, a multiplex PCR was newly designed with recent accumulated nucleotide sequences. The PCR testing with various C. difficile ribotypes, other Clostridium spp., and non-Clostridium strains revealed 100% specificity with the ability to detect as low as 22 genomic copy number per PCR reaction. Different combinations of sample processing were evaluated prior to multiplex PCR for the detection of C. difficile in fecal samples from hospitalized patients. The most optimal condition was the non-selective enrichment at 37°C for 1 h in brain heart infusion broth supplemented with taurocholate, followed by the multiplex PCR. The detection limit after sample processing was shown as being 5 spores per gram of fecal sample. Two hundred and thirty-eight fecal samples collected from the University affiliated hospital were analyzed by the enrichment multiplex PCR procedure. The results suggested that the combination of sample processing with the high-performance detection method would be applicable for routine diagnostic use in clinical setting. © 2013 Surang Chankhamhaengdecha et al.