The urinary nitric oxide metabolites NO(2)(-) and NO(3)(-) (summed as NO(x)) are a noninvasive, quantitative biomarker of translocation of salmonella from the intestinal lumen to systemic organs. Listeria monocytogenes is a food-borne gram-positive pathogen that can also cross the intestinal epithelium. In this study, we tested the efficacy of urinary NO(x) as a marker of listeria translocation...

Aim: This study investigates the prevalence of Listeria spp. in fresh produce sold in the Canterbury region of New Zealand. Background: L. monocytogenes is a common pathogenic bacterium that can be present and grow on fresh produce. Therefore, systematic risk assessment is needed to avoid a food safety scare. Results: Microbiological analysis to detect Listeria spp. in fresh produce samples sho...

Listeria monocytogenes is a Gram-positive foodborne pathogen and the causative agent of listeriosis. L. monocytogenes lapB gene encodes a cell wall surface anchor protein, and mutation of this gene causes Listeria attenuation in mice. In this work, the potential role of Listeria LapB protein in catfish fillet attachment was investigated. To achieve this, boron-based small molecules designed to ...

BACKGROUND Listeria monocytogenes is of major concern to the food industry in general and the dairy industry in particular. Little is known about incidence of this pathogenic bacterium in dairy products in Iran. METHODS A survey was made from 23 September 2006 to 22 June 2007 for Listeria species in ninety samples of traditional and industrial cheeses, in milk and surface where the cheeses we...

Five methods have been used in an effort to reveal an antibody that could account for the features of acquired resistance to Listeria monocytogenes: (a) a comparison of the growth rates of Listeria in the spleens of mice infused repeatedly with normal or immune mouse serum; (b) measurement of peritoneal clearance of Listeria in the presence of normal or immune mouse serum; (c) the survival rate...

Listeria monocytogenes is a foodborne pathogen, and the detection and differentiation of this bacterium from the nonpathogenic Listeria species are of great importance to the food industry. Differentiation of Listeria species is very difficult, even with the sophisticated MALDI-TOF MS technique because of the close genetic relationship of the species and the usual gene transfer. The present pap...

The iap gene of Listeria species encodes protein p60. The comparison of iap-related genes from different Listeria species indicated common and variable regions within these genes which appeared to be specific for each Listeria species. On the basis of the iap gene sequences, pairs of polymerase chain reaction (PCR) primers which allowed the unambiguous identification of all members of the genus...

The study was carried out to determine the prevalence and the in-vitro pathogenicity of Listeria monocytogenes in sheep and goats reared by nomads of Jammu region of J&K, in addition to biochemical characterization of isolates. A total of 125 samples comprising of sheep and goat faecal samples and their rectal swabs were collected. Isolation of Listeria species involved the enrichment of the sa...

Listeria monocytogenes can cause serious infection and recently, relapse of listeriosis has been reported in leukemia and colorectal cancer, and the patients with Klebsiella pneumoniae are at increased risk of colorectal cancer. Translation initiation codon recognition is basically mediated by Shine-Dalgarno (SD) and the anti-SD sequences at the small ribosomal RNA (ssu rRNA). In this research,...

Accurate and rapid detection of Listeria is of significant interest to the food industry. The 3MTM PetrifilmTM Environmental Listeria Plate has been developed in order to provide a Listeria result from environmental samples within 27 to 31 hours. This study compared the Petrifilm Plate method with ISO 11290-2 using PALCAM agar for detection and enumeration of Listeria. Studies of 88 strains dem...