Identification of bacteria directly from positive blood culture samples by DNA pyrosequencing of the 16S rRNA gene.

Rapid identification of the causative bacteria of sepsis in patients can contribute to the selection of appropriate antibiotics and improvement of patients' prognosis. Genotypic identification is an emerging technology that may provide an alternative method to, or complement, established phenotypic identification procedures. We evaluated a rapid protocol for bacterial identification based on PCR and pyrosequencing of the V1 and V3 regions of the 16S rRNA gene using DNA extracted directly from positive blood culture samples.

Genetic diagnosis of community-acquired MRSA: a multiplex real-time PCR method for Staphylococcal cassette chromosome mec typing and detecting toxin genes.

Methicillin-resistant Staphylococcus aureus (MRSA) causes a wide range of infections in health care settings and community environments. In particular, community-acquired MRSA (CA-MRSA) is important for clinicians because many fatal cases in healthy populations have been reported. Staphylococcal cassette chromosome mec (SCCmec) is a mobile genetic element and carries the central determinant for broad-spectrum beta-lactam resistance encoded by the mecA gene.

Quantitative detection of metallo-beta-lactamase of blaIMP-cluster-producing Pseudomonas aeruginosa by real-time polymerase chain reaction with melting curve analysis for rapid diagnosis and treatment of nosocomial infection.

In this study, we established the rapid quantitative detection of metallo-beta-lactamase-producing Pseudomonas aeruginosa in clinical isolates and samples using real-time polymerase chain reaction (PCR) targeting gyrB (identification of P. aeruginosa) and blaIMP. The relative sensitivities and specificities of this real-time PCR assay were as follows: 100.

Rapid and accurate detection of Pseudomonas aeruginosa by real-time polymerase chain reaction with melting curve analysis targeting gyrB gene.

Laboratory detection of Pseudomonas spp., particularly Pseudomonas aeruginosa, is an important assay in the nosocomial control. The study was designed firstly to establish a new assay-applied LightCycler polymerase chain reaction (PCR) technology with melting curve analysis (MCA).