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Development of a real-time PCR for the specific detection of Waddlia chondrophila in clinical samples

Croxatto, A.
Greub, G.
Published in European journal of clinical microbiology & infectious diseases. 2009, vol. 28, no. 12, p. 1483-1486
Abstract Waddlia chondrophila is considered as an emerging human pathogen likely involved in miscarriage and lower respiratory tract infections. Given the low sensitivity of cell culture to recover such an obligate intracellular bacteria, molecular-based diagnostic approaches are warranted. We thus developed a real-time PCR that amplifies Waddlia chondrophila DNA. Specific primers and probe were selected to target the 16S rRNA gene. The PCR specifically amplified W. chondrophila but did not amplify other related-bacteria such as Parachlamydia acanthamoebae, Simkania negevensis and Chlamydia pneumoniae. The PCR exhibited a good intra-run and inter-run reproducibility and a sensitivity of less than ten copies of the positive control. This real-time PCR was then applied to 32 nasopharyngeal aspirates taken from children with bronchiolitis not due to respiratory syncytial virus (RSV). Three samples revealed to be Waddlia positive, suggesting a possible role of this Chlamydia-related bacteria in this setting.
Keywords Bacteriological Techniques/*methodsChildChlamydiales/genetics/*isolation & purificationDNA Primers/geneticsDNA, Bacterial/geneticsDNA, Ribosomal/geneticsFemaleGram-Negative Bacterial Infections/*diagnosis/microbiologyHumansInfantInfant, NewbornNasopharynx/microbiologyPolymerase Chain Reaction/*methodsRNA, Ribosomal, 16S/geneticsReproducibility of ResultsSensitivity and Specificity
PMID: 19727868
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Research groups Etiologie des pneumonies et marqueurs inflammatoires chez l'enfant fébrile (183)
Recherche en infectiologie pédiatrique et en pédiatrie générale (853)
(ISO format)
GOY, Gérald et al. Development of a real-time PCR for the specific detection of Waddlia chondrophila in clinical samples. In: European journal of clinical microbiology & infectious diseases, 2009, vol. 28, n° 12, p. 1483-1486. doi: 10.1007/s10096-009-0804-7 https://archive-ouverte.unige.ch/unige:19839

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Deposited on : 2012-04-23

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