Differential Expression of Virulence-Related Genes in A Salmonella enterica Serotype Typhimurium luxS Mutant in Response to Autoinducer AI-2 And Poultry Meat–Derived AI-2 Inhibitor

2007 ◽  
Vol 4 (1) ◽  
pp. 5-15 ◽  
Author(s):  
Kenneth W. Widmer ◽  
Palmy R. Jesudhasan ◽  
Scot E. Dowd ◽  
Suresh D. Pillai
Keyword(s):  
Differential Expression ◽  
Salmonella Enterica ◽  
Poultry Meat ◽  
Luxs Mutant

scholarly journals First report of mcr-1-harboring Salmonella enterica serovar Schwarzengrund isolated from poultry meat in Brazil

2019 ◽  
Vol 93 (4) ◽  
pp. 376-379 ◽  
Author(s):  
Luisa Z. Moreno ◽  
Vasco T.M. Gomes ◽  
Jéssica Moreira ◽  
Carolina H. de Oliveira ◽  
Bárbara P. Peres ◽  
...  
Keyword(s):  
Salmonella Enterica ◽  
Poultry Meat ◽  
First Report

scholarly journals Salmonella enterica Serovar Enteritidis Pathogenicity Island 1 Is Not Essential for but Facilitates Rapid Systemic Spread in Chickens

2009 ◽  
Vol 77 (7) ◽  
pp. 2866-2875 ◽  
Author(s):  
Taseen S. Desin ◽  
Po-King S. Lam ◽  
Birgit Koch ◽  
Claudia Mickael ◽  
Emil Berberov ◽  
...  
Keyword(s):  
Salmonella Enterica ◽  
Systemic Infection ◽  
Poultry Meat ◽  
Wild Type ◽  
Secretion Systems ◽  
Salmonella Enterica Serovar Enteritidis ◽  
Systemic Spread ◽  
Mutant Strains ◽  
Vitro Analysis

ABSTRACT Salmonella enterica subsp. enterica serovar Enteritidis is a leading cause of human food-borne illness that is mainly associated with the consumption of contaminated poultry meat and eggs. To cause infection, S. Enteritidis is known to use two type III secretion systems, which are encoded on two salmonella pathogenicity islands, SPI-1 and SPI-2, the first of which is thought to play a major role in invasion and bacterial uptake. In order to study the role of SPI-1 in the colonization of chicken, we constructed deletion mutants affecting the complete SPI-1 region (40 kb) and the invG gene. Both ΔSPI-1 and ΔinvG mutant strains were impaired in the secretion of SipD, a SPI-1 effector protein. In vitro analysis using polarized human intestinal epithelial cells (Caco-2) revealed that both mutant strains were less invasive than the wild-type strain. A similar observation was made when chicken cecal and small intestinal explants were coinfected with the wild-type and ΔSPI-1 mutant strains. Oral challenge of 1-week-old chicken with the wild-type or ΔSPI-1 strains demonstrated that there was no difference in chicken cecal colonization. However, systemic infection of the liver and spleen was delayed in birds that were challenged with the ΔSPI-1 strain. These data demonstrate that SPI-1 facilitates systemic infection but is not essential for invasion and systemic spread of the organism in chickens.

A Real-Time PCR/SYBR Green I Method for the Rapid Quantification of Salmonella enterica in Poultry Meat

2013 ◽  
Vol 6 (4) ◽  
pp. 1004-1015 ◽  
Author(s):  
Caterina Agrimonti ◽  
Laura Bortolazzi ◽  
Elena Maestri ◽  
Anna Maria Sanangelantoni ◽  
Nelson Marmiroli
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Salmonella Enterica ◽  
Sybr Green ◽  
Sybr Green I ◽  
Poultry Meat ◽  
Rapid Quantification

scholarly journals Virulotyping of Salmonella enterica subsp. enterica isolated from indigenous vegetables and poultry meat in Malaysia using multiplex-PCR

2009 ◽  
Vol 96 (4) ◽  
pp. 441-457 ◽  
Author(s):  
Chai-Hoon Khoo ◽  
Yoke-Kqueen Cheah ◽  
Learn-Han Lee ◽  
Jiun-Horng Sim ◽  
Noorzaleha Awang Salleh ◽  
...  
Keyword(s):  
Multiplex Pcr ◽  
Salmonella Enterica ◽  
Poultry Meat ◽  
Indigenous Vegetables

scholarly journals High level of contamination of antimicrobial drug resistant non-typhoidal Salmonella enterica in commercial poultry and its surroundings in Chitwan, Nepal

2020 ◽  
Author(s):  
Amy Nelson ◽  
Sulochana Manandhar ◽  
Juliana Ruzante ◽  
Arrogya Gyawali ◽  
Bimala Dhakal ◽  
...  
Keyword(s):  
Salmonella Enterica ◽  
Environmental Samples ◽  
Positive Sample ◽  
Poultry Meat ◽  
Health Concern ◽  
Feed Water ◽  
Cross Sectional ◽  
Tissue Samples ◽  
Food Animals ◽  
Culture Positive

Abstract BackgroundAntimicrobial resistance (AMR) among bacterial pathogens is a fast-growing public health concern. AMR in non-typhoidal Salmonella species among food animals is of special concern as this may transmit resistant pathogens to humans during handling or consumption of animal products. In Nepal, the possibility of AMR Salmonella species among food animals is an important area of research, particularly in light of the rapidly growing poultry industry, lack of surveillance, and paucity of studies that have been conducted. MethodsTaking one health approach, a cross-sectional study was carried out in Chitwan district of Nepal between May and October 2017. Various environmental samples viz. farm litter, feed, water, poultry feces, vehicle swabs, farm swabs from 12 broiler poultry farms and various sections of poultry carcasses from 21 slaughter houses were aseptically collected. These were microbiologically assessed for the presence of non-typhoidal Salmonella and their phenotypic and genotypic indicators of antimicrobial resistance. ResultsOverall, Of 62 environmental samples collected, 31(50%) tested positive for Salmonella enterica serovars with environmental swabs (70%, 8/12) being the most culture positive sample types. Similarly, of 159 tissue samples collected from 24 carcasses, 79% (126/159) were culture positive for Salmonella enterica. Nearly 97% (153/157), 11% (17/157), 5% (8/157) and none of isolates showed resistance to tetracycline, ciprofloxacin, azithromycin and meropenem respectively. Some 83% (131/157), 40% (64/157), 8% (13/157) and 0.6% (1/157) of isolates tested positive for tetA, QrnS, mefA and VIM-1 AMR genes corresponding to the above antimicrobials respectively.ConclusionsThis study revealed gross contamination of farms and subsequent poultry meat samples with Salmonella enterica serovars that were resistant to several clinically applicable antimicrobials. This reinforces an urgent need to implement proper biosecurity approaches from farms to slaughter houses and strengthen policies to cease the rampant use of clinically important antimicrobials in poultry.

scholarly journals Characterization and whole genome sequencing of closely related multidrug-resistant Salmonella enterica serovar Heidelberg isolates from imported poultry meat in the Netherlands

PLoS ONE ◽  
2019 ◽  
Vol 14 (7) ◽  
pp. e0219795 ◽  
Author(s):  
Redmar R. van den Berg ◽  
Serge Dissel ◽  
Michel L. B. A. Rapallini ◽  
Coen C. van der Weijden ◽  
Ben Wit ◽  
...  
Keyword(s):  
The Netherlands ◽  
Whole Genome Sequencing ◽  
Genome Sequencing ◽  
Salmonella Enterica ◽  
Multidrug Resistant ◽  
Poultry Meat ◽  
Whole Genome

scholarly journals Macrophages Isolated from Chickens Genetically Resistant or Susceptible to Systemic Salmonellosis Show Magnitudinal and Temporal Differential Expression of Cytokines and Chemokines following Salmonella enterica Challenge

2006 ◽  
Vol 74 (2) ◽  
pp. 1425-1430 ◽  
Author(s):  
Paul Wigley ◽  
Scott Hulme ◽  
Lisa Rothwell ◽  
Nat Bumstead ◽  
Pete Kaiser ◽  
...  
Keyword(s):  
Differential Expression ◽  
Salmonella Enterica ◽  
Adaptive Responses ◽  
Resistant Line ◽  
Interleukin 18 ◽  
Cytokines And Chemokines

ABSTRACT Macrophages from inbred chickens that are resistant to salmonellosis show greater and more rapid expression of proinflammatory chemokines and cytokines, including the key Th1-inducing cytokine interleukin-18, upon Salmonella challenge than those from susceptible birds. This suggests the possibility that salmonellosis resistant-line macrophages signal more effectively and rapidly and are more able to induce protective Th1 adaptive responses.

scholarly journals Complete Genome Sequence of Bacteriophage MA12, Which Infects both Campylobacter jejuni and Salmonella enterica Serovar Enteritidis

2016 ◽  
Vol 4 (6) ◽  
Author(s):  
Sunjin Lee ◽  
Taesoo Kwon ◽  
Su-Jin Chae ◽  
Jong-Hyun Kim ◽  
Yeon Ho Kang ◽  
...  
Keyword(s):  
Campylobacter Jejuni ◽  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Salmonella Enterica ◽  
Complete Genome ◽  
Phage Therapy ◽  
Poultry Meat ◽  
Salmonella Enterica Serovar Enteritidis

Here, we announce the complete genome sequence of Salmonella enterica serovar Enteritidis ( S . Enteritidis) bacteriophage MA12, a 41-Kb chromosome. The strain can infect both Campylobacter jejuni ( C. jejuni ) and S . Enteritidis and can be used in phage therapy experiments with poultry and poultry meat.

scholarly journals Study of the antibiotic residues in poultry meat in some of the EU countries and selection of the best compositions of lactic acid bacteria and essential oils against Salmonella enterica

2020 ◽  
Vol 99 (8) ◽  
pp. 4065-4076 ◽  
Author(s):  
Elena Bartkiene ◽  
Modestas Ruzauskas ◽  
Vadims Bartkevics ◽  
Iveta Pugajeva ◽  
Paulina Zavistanaviciute ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Essential Oils ◽  
Salmonella Enterica ◽  
Poultry Meat ◽  
Antibiotic Residues ◽  
Eu Countries ◽  
Selection Of ◽  
The Eu

scholarly journals Ceftiofur-resistant Salmonella enterica serovar Heidelberg of poultry origin – a risk profile using the Codex framework

2019 ◽  
Vol 147 ◽  
Author(s):  
Carolee Carson ◽  
Xian-Zhi Li ◽  
Agnes Agunos ◽  
Daleen Loest ◽  
Brennan Chapman ◽  
...  
Keyword(s):  
Risk Management ◽  
Food Safety ◽  
Antimicrobial Resistance ◽  
Salmonella Enterica ◽  
Safety Issue ◽  
Severe Disease ◽  
Risk Profile ◽  
Poultry Meat ◽  
Resistant Bacteria ◽  
Management Options

Abstract Codex published the ‘Guidelines for Risk Analysis of Foodborne Antimicrobial Resistance’ to standardise the approach for evaluating risk posed by foodborne antimicrobial-resistant bacteria. One of the first steps in the guidelines is to compile a risk profile, which provides the current state of knowledge regarding a food safety issue, describes risk management options and recommends next steps. In Canada, ceftiofur/ceftriaxone-resistant Salmonella enterica subsp. enterica serovar Heidelberg from poultry was identified as an antimicrobial resistance (AMR) food safety issue. The first objective of this article was to contextualise this food safety issue, using the risk profile format of the Codex Guidelines. A second objective was to evaluate the applicability of the Codex Guidelines. This risk profile indicated that ceftiofur/ceftriaxone-resistant S. Heidelberg (CSH) was commonly isolated from poultry and was associated with severe disease in humans. Ceftiofur use in poultry hatcheries temporally mirrored the prevalence of CSH from poultry meat at retail and from people with salmonellosis. The evidence was sufficient to indicate the need for risk management options, such as restricting the use of ceftiofur in poultry. The Codex Guidelines provided a useful approach to summarise data for decision-makers to evaluate an AMR food safety issue.

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