Rapid and sensitive detection of Plesiomonas shigelloides by cross‑priming amplification of the hugA gene.

Abstract:

:Plesiomonas shigelloides (P. shigelloides) is implicated as an aetiological agent of human gastroenteritis in humans, for which reliable laboratory detection of P. shigelloides is clinically and epidemiologically desirable. A simple molecular method for rapid detection of P. shigelloides using cross‑priming amplification (CPA) has been developed, with hugA as the target. The hugA gene is required for haem iron utilisation and is critical for the survival and growth of P. shigelloides. The assay output was visualised as a colour change with no need to open the reaction tubes, and no false‑positive results were detected for the 33 non‑ P. shigelloides strains examined to assess assay specificity. The limit of detection was 200 fg P. shigelloides DNA per reaction and 3x103 CFU per g in human stools, which was 100 and 10‑fold more sensitive than polymerase chain reaction, respectively. The CPA method was used to detect the presence of P. shigelloides in stool specimens from 70 patients with diarrhoea and 30 environmental water samples, with no difference in accuracy between the CPA assay and the biological culture. The present study, therefore, suggests that the P. shigelloides hugA CPA assay may represent a valuable tool for rapid and sensitive detection of P. shigelloides in primary care facilities and clinical laboratories.

journal_name

Mol Med Rep

authors

Meng S,Wang Y,Wang Y,Ye C

doi

10.3892/mmr.2016.5937

subject

Has Abstract

pub_date

2016-12-01 00:00:00

pages

5443-5450

issue

6

eissn

1791-2997

issn

1791-3004

journal_volume

14

pub_type

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