Reliable Detection of Bacillus Anthracis, Francisella Tularensis and Yersinia Pestis by Using Multiplex QPCR Including Internal Controls for Nucleic Acid Extraction and Amplification

Overview

Journal BMC Microbiol

Publisher Biomed Central

Specialty Microbiology

Date 2010 Dec 15

PMID 21143837

Citations 29

Authors

Ingmar Janse

Raditijo A Hamidjaja

Jasper M Bok

Bart J van Rotterdam

Affiliations

Soon will be listed here.

Abstract

Background: Several pathogens could seriously affect public health if not recognized timely. To reduce the impact of such highly pathogenic micro-organisms, rapid and accurate diagnostic tools are needed for their detection in various samples, including environmental samples.

Results: Multiplex real-time PCRs were designed for rapid and reliable detection of three major pathogens that have the potential to cause high morbidity and mortality in humans: B. anthracis, F. tularensis and Y. pestis. The developed assays detect three pathogen-specific targets, including at least one chromosomal target, and one target from B. thuringiensis which is used as an internal control for nucleic acid extraction from refractory spores as well as successful DNA amplification. Validation of the PCRs showed a high analytical sensitivity, specificity and coverage of diverse pathogen strains.

Conclusions: The multiplex qPCR assays that were developed allow the rapid detection of 3 pathogen-specific targets simultaneously, without compromising sensitivity. The application of B. thuringiensis spores as internal controls further reduces false negative results. This ensures highly reliable detection, while template consumption and laboratory effort are kept at a minimum.

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