Universal extraction method for gastrointestinal pathogens

Halstead, Fenella D, Lee, Adele V, Couto-Parada, Xose, Polley, Spencer D, Ling, Clare, Jenkins, Claire, Chalmers, Rachel M, Elwin, Kristin, Gray, Jim J, Iturriza-Gómara, Miren, Wain, John, Clark, Duncan A, Bolton, Frederick J, Manuel, Rohini J and , Olympics GI Group (2013) Universal extraction method for gastrointestinal pathogens. Journal of Medical Microbiology, 62 (Pt 10). pp. 1535-9. ISSN 0022-2615

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Abstract

A universal stool extraction method for recovery of nucleic acids (NAs) from gastrointestinal pathogens was developed to support rapid diagnostics for the London 2012 Olympics. The method involved mechanical disruption (bead beating) of the stools, followed by automated extraction and detection using real-time PCR. This method had been used extensively in the Second Infectious Intestinal Disease Study (IID2) for the isolation of NA from bacteria and parasites (and was effective for the robust recovery of Cryptosporidium spp.) but had not been used for enteric viruses. To ensure this method was universally suitable, panels of samples known to contain target bacteria, viruses or parasites were processed in triplicate using the pre-treatment method routinely used for each target and the new extraction method (bead beating). The extracts were tested using real-time PCR and the cycle threshold values were compared. The results from this study showed that bead beating improved yields for the bacterial and parasitic targets and was suitable for the viral targets. The implementation of this universal method should confer cost- and time-saving benefits and streamline the processes required for the characterization of an array of pathogens from faecal samples.

Item Type: Article
Uncontrolled Keywords: bacterial infections,dna,feces,gastroenteritis,humans,intestinal diseases, parasitic,london,molecular diagnostic techniques,real-time polymerase chain reaction,specimen handling,time factors
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
Depositing User: Pure Connector
Date Deposited: 12 Nov 2014 16:48
Last Modified: 21 Apr 2020 23:33
URI: https://ueaeprints.uea.ac.uk/id/eprint/50759
DOI: 10.1099/jmm.0.058743-0

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