scholarly journals Genomic Characterization of Listeria monocytogenes Isolates Associated with Clinical Listeriosis and the Food Production Environment in Ireland

Genes ◽  
2018 ◽  
Vol 9 (3) ◽  
pp. 171 ◽  
Author(s):  
Amber Hilliard ◽  
Dara Leong ◽  
Amy O’Callaghan ◽  
Eamonn Culligan ◽  
Ciara Morgan ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Food Production ◽  
Production Environment ◽  
Genomic Characterization

scholarly journals Genomic Characterization of Listeria monocytogenes Isolated From Ready-to-Eat Meat and Meat Processing Environments in Poland

2020 ◽  
Vol 11 ◽  
Author(s):  
Monika Kurpas ◽  
Jacek Osek ◽  
Alexandra Moura ◽  
Alexandre Leclercq ◽  
Marc Lecuit ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Meat Processing ◽  
Genomic Characterization

scholarly journals Genomic Characterization of Listeria monocytogenes Strains Involved in a Multistate Listeriosis Outbreak Associated with Cantaloupe in US

PLoS ONE ◽  
2012 ◽  
Vol 7 (7) ◽  
pp. e42448 ◽  
Author(s):  
Pongpan Laksanalamai ◽  
Lavin A. Joseph ◽  
Benjamin J. Silk ◽  
Laurel S. Burall ◽  
Cheryl L. Tarr ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Genomic Characterization

scholarly journals First Report on the Finding of Listeria mnocytogenes ST121 Strain in a Dolphin Brain

Pathogens ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 802
Author(s):  
Yann Sévellec ◽  
Marina Torresi ◽  
Benjamin Félix ◽  
Féderica Palma ◽  
Gabriella Centorotola ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Mediterranean Sea ◽  
Food Production ◽  
Polychlorinated Biphenyl ◽  
Foodborne Illness ◽  
Production Environment ◽  
Related Strain ◽  
Genomic Features ◽  
First Time ◽  
Production Industry

Listeria monocytogenes (Lm) is a ubiquitous bacterium that causes the foodborne illness, listeriosis. Clonal complexes (CC), such as CC121, are overrepresented in the food production industry, and are rarely reported in animals and the environment. Working within a European-wide project, we investigated the routes by which strains are transmitted from environments and animals to food and the food production environment (FPE). In this context, we report, for the first time, the occurrence of a ST121 (CC121) strain isolated from a dolphin brain. The genome was compared with the genomes of 376 CC121 strains. Genomic comparisons showed that 16 strains isolated from food were the closest to the dolphin strain. Like most of the food strains analyzed here, the dolphin strain included genomic features (transposon Tn6188, plasmid pLM6179), both described as being associated with the strain’s adaptation to the FPE. Like all 376 strains, the dolphin strain contained a truncated actA gene and inlA gene, both described as being associated with attenuated virulence. Despite this fact, the strain was able to cross blood-brain barrier in immunosuppressed dolphin exposed polychlorinated biphenyl and invaded by parasites. Our data suggest that the dolphin was infected by a food-related strain released into the Mediterranean Sea.

scholarly journals Phenotypic, Proteomic, and Genomic Characterization of a Putative ABC-Transporter Permease Involved in Listeria monocytogenes Biofilm Formation

2011 ◽  
Vol 8 (4) ◽  
pp. 495-501 ◽  
Author(s):  
Xinna Zhu ◽  
Weibing Liu ◽  
René Lametsch ◽  
Frank Aarestrup ◽  
Chunlei Shi ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Abc Transporter ◽  
Biofilm Formation ◽  
Genomic Characterization

scholarly journals Genomic Characterization of Clinical Listeria monocytogenes Isolates in Beijing, China

2021 ◽  
Vol 12 ◽  
Author(s):  
Xiaoai Zhang ◽  
Yuzhu Liu ◽  
Penghang Zhang ◽  
Yanlin Niu ◽  
Qian Chen ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Common Core ◽  
Core Genome ◽  
The United States ◽  
Multidrug Resistant ◽  
Human Pathogen ◽  
Genomic Characterization ◽  
Beijing China ◽  
Insight Into

Listeria monocytogenes is a foodborne human pathogen that affects public health worldwide. Whole-genome sequencing (WGS) can classify L. monocytogenes isolates and identify virulence islands and resistance genes potentially influencing infectivity. Herein, WGS was used to assess 151 L. monocytogenes isolates from 120 cases of clinical infection in Beijing, China, between 2014 and 2018. Most isolates were either serogroup 1/2a,3a or serogroup 1/2b,3b,7, with 25 multilocus sequence typing (MLST) types (STs) represented, of which ST8, ST87, and ST5 were the most common. Core-genome MLST (cgMLST) grouped the 151 isolates into 116 cgMLST types. The discriminatory power of cgMLST was greater than other subtypes, revealing that isolates from the same patient were highly related (only differing at one allele). Eighty-six isolates formed 30 complexes with ≤ 7 cgMLST alleles between neighboring isolates, suggesting possible outbreaks. Compared with isolates in the United States, ST8, ST121, ST619, ST87, and ST155 isolates were grouped into unified clades. All 151 isolates were positive for common virulence-associated loci, and 26 lineage I isolates harbored the pathogenicity island 3 (LIPI-3) locus, while 42 lineage I isolates harbored the complete LIPI-4 locus. Eleven ST619 isolates had both LIPI-3 and LIPI-4. Among the 151 isolates, 13 were resistant to at least one antibiotic, and no multidrug-resistant isolates were identified. Resistance phenotypes correlated with genotypes, apart from two meropenem resistance isolates. The findings provided insight into the nature of L. monocytogenes strains currently causing clinical disease in Beijing, and WGS analysis indicated possible outbreaks.

scholarly journals Genomic Characterization of Novel Listeria monocytogenes Serotype 4b Variant Strains

PLoS ONE ◽  
2014 ◽  
Vol 9 (2) ◽  
pp. e89024 ◽  
Author(s):  
Pongpan Laksanalamai ◽  
Bixing Huang ◽  
Jonathan Sabo ◽  
Laurel S. Burall ◽  
Shaohua Zhao ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Genomic Characterization ◽  
Serotype 4B

Virulence of Listeria monocytogenes Isolates from Humans and Smoked Salmon, Peeled Shrimp, and Their Processing Environments

2006 ◽  
Vol 69 (9) ◽  
pp. 2157-2160 ◽  
Author(s):  
SIGRÚN GUĐ MUNDSDÓTTIR ◽  
SYLVIE M. ROCHE ◽  
KARL G. KRISTINSSON ◽  
MÁR KRISTJÁNSSON
Keyword(s):  
Listeria Monocytogenes ◽  
Food Processing ◽  
Food Production ◽  
Raw Materials ◽  
Production Environment ◽  
Inoculation Test ◽  
Smoked Salmon ◽  
Production Environments ◽  
Highly Virulent ◽  
Subcutaneous Inoculation

The virulence of 82 Listeria monocytogenes isolates from human cases and cold-smoked salmon, cooked peeled shrimp, and their production environments was assessed using the plaque-forming assay and a subcutaneous inoculation test in mice. These isolates were previously typed using serotyping and pulsed-field gel electrophoresis. The isolates from food-production environments were collected in several surveys over the period of 5 years. Sixty-eight (99.8%) of 69 isolates tested from food and food-processing environments were considered virulent while only one was avirulent. All clinical isolates (13) were highly virulent. The isolates were from raw materials, final products, and the production environment. This stresses the importance of hygiene in the processing environment as well as among personnel to avoid contamination of the final product.

Genomic characterization of γ-terpinene synthase from Thymus caespititius

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
AS Lima ◽  
B Lukas ◽  
J Novak ◽  
AC Figueiredo ◽  
LG Pedro ◽  
...  
Keyword(s):  
Genomic Characterization
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