当前位置： SCI文献检索 > WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY期刊下所有文献 > Rapid and simple identification of carbapenemase genes, bla NDM, bla OXA-48, bla VIM, bla IMP-14 and bla KPC groups, in Gram-negative bacilli by in-house loop-mediated isothermal amplification with hydroxynaphthol blue dye.

Rapid and simple identification of carbapenemase genes, bla NDM, bla OXA-48, bla VIM, bla IMP-14 and bla KPC groups, in Gram-negative bacilli by in-house loop-mediated isothermal amplification with hydroxynaphthol blue dye.

Abstract：

:Carbapenem-resistant Enterobacteriaceae isolates by carbapenemase production are being reported globally with increasing frequency, leading to limited therapeutic options. We therefore developed a loop-mediated isothermal amplification method with hydroxynaphthol blue dye (LAMP-HNB) for rapid confirmation of bla NDM, bla OXA-48, bla VIM, bla IMP-14 and bla KPC groups. Sixty-two Enterobacteriaceae and Pseudomonas spp. isolates carrying various carbapenemase genes (28 bla NDM-1, 9 bla IMP-14a, 2 bla IMP-48, 1 bla IMP-1, 1 bla IMP-4, 1 bla IMP-9, 1 bla IMP-15, 4 bla VIM-2, 1 bla VIM-1, 1 bla IMP-14a & bla VIM-2, 7 bla KPC-2, 3 bla OXA-48 and 3 bla OXA-181) and 37 non-carbapenemase-producing Enterobacteriaceae isolates as confirmed by the PCR methods were included. Bacterial DNA was extracted by a simple boiling method. The LAMP-HNB method for each target gene was carried out using a set of six primers under isothermal condition at 65 °C in an ordinary water bath within 60 min and visual measurement of reaction by the change from violet to sky blue. This method had high efficiency (100% sensitivity and specificity) for identifying the bla NDM, bla OXA-48, bla VIM, bla IMP-14 and bla KPC groups compared with the PCR method. The HNB is easy to prepare, inexpensive and provides reliable results. Therefore, this method could be used as a confirmatory carbapenemase test in routine laboratory or for epidemiological purposes.

journal_name

World J Microbiol Biotechnol

journal_title

World journal of microbiology & biotechnology

authors

Srisrattakarn A,Lulitanond A,Wilailuckana C,Charoensri N,Wonglakorn L,Saenjamla P,Chaimanee P,Daduang J,Chanawong A

doi

10.1007/s11274-017-2295-5

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

130

issue

7

eissn

0959-3993

issn

1573-0972

pii

10.1007/s11274-017-2295-5

journal_volume

33

pub_type

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