Prevalence, and virulence determination of Listeria monocytogenes strains isolated from clinical and non-clinical samples by multiplex polymerase chain reaction

Rev Soc Bras Med Trop. 2016 Sep-Oct;49(5):624-627. doi: 10.1590/0037-8682-0403-2015.

Abstract

Introduction:: This study aimed to determine the prevalence, and virulence factors of Listeria monocytogenes isolated from various samples by multiplex polymerase chain reaction (MPCR).

Methods:: A total of 617 isolates were obtained and MPCR was employed for detection of the inlA, inlC, and inlJ genes.

Results:: L. monocytogenes was detected in 46 (7.45%) of the 617 specimens. inlA, inlC, and inlJ were detected in 100%, 76.26%, and 71% isolates, respectively.

Conclusions:: This study validated MPCR in the analysis and rapid detection of L. monocytogenes. The role of the genes in pathogenesis of the strains can also be affirmed.

MeSH terms

  • Animals
  • Animals, Domestic / microbiology
  • Dairy Products / microbiology
  • Female
  • Food Microbiology
  • Genotype
  • Humans
  • Iran
  • Listeria monocytogenes / genetics
  • Listeria monocytogenes / isolation & purification
  • Listeria monocytogenes / pathogenicity*
  • Meat / microbiology
  • Multiplex Polymerase Chain Reaction
  • Prevalence
  • Serotyping
  • Virulence / genetics*