Bacterial pathogens

Mon, 11/11/2019 - 03:33
Author(s): N.G.C. Vasileiou, P.J. Cripps, K.S. Ioannidi, A.I. Katsafadou, D.C. Chatzopoulos, M.S. Barbagianni, V. Tsioli, E. Dermisiadou, E. Karavanis, N. Papadopoulos, D. Lianou, V.S. Mavrogianni, E. Petinaki, G.C. FthenakisAbstractAlthough coagulase-negative staphylococci are the primary aetiological agents of subclinical mastitis in ewes, there is little information regarding vaccination...
Mon, 11/11/2019 - 03:30
Background Q fever is a febrile illness caused by infection with the bacterium Coxiella burnetii. It is most often transmitted by inhalation of the bacteria after it is shed by infected livestock. Recent studies have found very high C. burnetii infection rates among marine mammals, but it is not known if shedding by marine mammals creates a risk of Q fever among humans. To better understand...
Mon, 11/11/2019 - 03:29
The Pacific white shrimp Penaeus vannamei is cultivated worldwide and is an important economic resource in Mexico. Despite continuous development of shrimp aquaculture in Mexico, this activity has exhibited variable production rates because of health‐related problems. Most of the health problems have been caused by viruses, such as IHHNV [syn = penstyldensovirus (PstDV1)], TSV, and WSSV, and...
Mon, 11/11/2019 - 03:28
The survival of Salmonella Enteritidis, S. Typhimurium, S. Infantis, and S. Montevideo in experimentally inoculated (106 CFU/g) minced pork meat containing different concentrations (0%, 0.3%, 0.6%, or 0.9%) of oregano (Origanum vulgare) essential oil (OEO) packaged under vacuum or MAP (30%O2/50%CO2/20%N2) were evaluated within 15 days of refrigeration (3 ± 1°C) storage. Carvacrol was the...
Mon, 11/11/2019 - 03:28
Attiéké is the major fermented plant food in Côte d'Ivoire. The aim of this study was to identify hazards and critical control points (CCP) in order to implement a HACCP system for the production of attiéké. Physico‐chemical and microbiological analyses were carried out. pH of the cossettes used as raw material for attieke process was slightly acidic (6·5 ± 0·23). But attiéké produced had an acid...
Mon, 11/11/2019 - 03:28
Mycobacteriosis in cultured fish is a challenge for the aquaculture industry worldwide. Treatment by chemical administration is difficult and no effective vaccine has been developed. Therefore, detection and isolation by early diagnosis are important for prevention of the spread of the disease. In mammals, interferon gamma release assays have been established for detection of tuberculosis; these...
Mon, 11/11/2019 - 03:27
Aims Current culture‐based methods for detection and determination of Campylobacter levels on processed chickens takes at least two days. Here, we sought to develop a new complete, low‐cost and rapid (approximately 2·5 hours) detection system requiring minimal operator input. Methods and Results We observed a strong correlation between culture‐based cell counts and our ability to detect either...
Mon, 11/11/2019 - 03:27
Alginate‐based edible coating acts as a carrier enabling the sustained release of thyme oil to the surface of the fresh‐cut apples, inhibiting the growth of Listeria monocytogenes, Salmonella Typhimurium, Staphylococcus aureus and Escherichia coli O157:H7 inoculated onto fresh‐cut apples. Summary In this study, the inhibition of an alginate‐based edible coating (EC) containing thyme oil (0.05%, 0...
Mon, 11/11/2019 - 03:26
A matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS) method were established to detect Campylobacter jejuni and Listeria monocytogenes from a chicken farm and samples from commercial live chickens. Suspected isolates were pretreated and crystallized by matrix solutions consisting of ethanol, acetonitrile, and water with different proportions. The effect of...
Sun, 11/10/2019 - 03:35
Author(s): Xi Yang, Xiangning Bai, Ji Zhang, Hui Sun, Shanshan Fu, Ruyue Fan, Xiaohua He, Flemming Scheutz, Andreas Matussek, Yanwen XiongAbstractShiga toxin (Stx) is the key virulence factor in Shiga toxin producing Escherichia coli (STEC), which can cause diarrhea and hemorrhagic colitis with life-threatening complications. Stx comprises two toxin types, Stx1 and Stx2. Several Stx1/Stx2...
Sun, 11/10/2019 - 03:35
Author(s): Limin Wu, Yongjing Li, Yufeng Xu, Lei Wang, Xiao Ma, Chuanju Dong, Xianliang Zhao, Xue Tian, Xuejun Li, Xianghui KongAbstractMyostatin, through type I receptor (kinase 4, 5, ALK4/5), functions to participate in the immune system and negatively regulate muscle growth in mammals. However, the role of myostatin (mstn) in the immune system of teleosts is largely unknown. In a previous...
Sun, 11/10/2019 - 03:34
Author(s): Bin Wu, Tan Yang, Dengchao Zou, Ling Jin, Xuehua Liang, Ting Li, Ganhui Huang, Jinsheng ZhangAbstractAn accurate biosensor for rapid detection of Salmonella via low-field nuclear magnetic resonance (NMR) technology was developed. First, poly-l-lysine (PLL) containing several amino groups was modified with diethylene triamine pentacetate acid (DTPA) and gadolinium (Gd). The antibody was...
Sun, 11/10/2019 - 03:34
Author(s): Sun Hee Moon, Joy Waite-Cusic, En HuangAbstractSalmonella contamination in broiler carcasses poses significant health concerns. The objectives of this study were to evaluate the antimicrobial activity of 10 essential oil compounds and to determine the combined effects with a commercial bacteriophage (SALMONELEX) against Salmonella. Thymol and carvacrol were the most active compounds...
Sun, 11/10/2019 - 03:34
Author(s): Ji-Sook Park, Jae-Won HaAbstractThe objectives of this study were to investigate the antimicrobial effect of the X-ray and curcumin combination against Listeria monocytogenes on sliced cheese and to determine the effect of this treatment combination on the quality attributes of sliced cheese. Treatment with the combination of X-ray (0.4 kGy) and curcumin (0.5 mg/L) resulted in the...
Sun, 11/10/2019 - 03:33
Author(s): Zhi-Xiang Dong, Huan-Yuan Li, Yi-Fei Chen, Feng Wang, Xian-Yu Deng, Lian-Bing Lin, Qi-Lin Zhang, Ji-Lian Li, Jun GuoAbstractThe role of the gut microbiome in animal health has become increasingly evident. Although the structure of the gut microbiome of A. mellifera is well known, little is known about the dynamic change across different developmental stages. In this study, we explored...
Sun, 11/10/2019 - 03:32
Author(s): Ayhan Duran, Halil Ibrahim KahveAbstractBeef is an animal food sensitive to deterioration due to its rich nutrient content. Therefore, some preservation techniques are applied. These include vacuum packaging, a modified atmosphere, a controlled atmosphere and an edible film coating. In this study, it was aimed to extend the shelf life of beef using vacuum packaging (VP) and chitosan...
Sun, 11/10/2019 - 03:32
Author(s): Tareq M. Osaili, Anas A. Al-Nabulsi, Dinesh Kumar Dhanasekaran, Fayeza Hasan, Sowmya Rao, Hera Fatima, Mutamed Ayyash, Richard Holley, Reyad S. ObaidAbstractThis study aimed to evaluate growth behaviour of Escherichia coli O157:H7, Salmonella spp., and background microbiota in ground lean camel meat during refrigerated storage for up to 7 d, and determine thermal inactivation...
Sun, 11/10/2019 - 03:32
Author(s): Minto Michael, Jennifer Acuff, Keyla Lopez, Daniel Vega, Randall Phebus, Harshavardhan Thippareddi, Lakshmikantha H. ChannaiahAbstractThis study was conducted to validate a simulated commercial baking process for plain muffins against E. coli O121 (isolated from the recent illness outbreak associated with flour), and compare the thermal inactivation parameters (D- and z-values) of...
Sun, 11/10/2019 - 03:32
Author(s): Pedro Rodríguez-López, Juan José Rodríguez-Herrera, Marta López CaboAbstractThe variation in microbial composition over time was assessed in biofilms formed in situ on selected non-food and food contact surfaces of meat and fish industries, previously identified as Listeria monocytogenes-positive foci. First, all samples were analysed for the detection and quantification of L....
Sun, 11/10/2019 - 03:31
Author(s): Kuppuswamy N. KasturiAbstractSalmonella is one of the leading causes of foodborne illnesses in the USA. When a Salmonella outbreak occurs, rapid identification of the causative serovar is important for tracing the source of contamination and for preventing the further spread of the illness. Each serovar is characterized by the presence of a group-specific somatic O-antigen(s) and an...
Thu, 11/07/2019 - 03:38
ABSTRACT In the present study, we provide the results of a detailed genomic analysis and the growth characteristics of a colistin-resistant KPC-3-producing Klebsiella pneumoniae sequence type 512 (ST512) isolate (the colR-KPC3-KP isolate) with a mutated pmrB and isogenic isolates of colR-KPC3-KP with mcr-1.2 isolated from an immunocompromised patient. From 2014 to 2017, four colR-KPC3-KP isolates...
Thu, 11/07/2019 - 03:37
Author(s): Lun Zhang, Shuiqing Gui, Jian Wang, Qingru Chen, Jiali Zeng, Along Liu, Zhaoxia Chen, Xuemei LuAbstractFood and feed contamination caused by Salmonella typhimurium has led to serious economic losses and healthy problems worldwide, including particularly gastroenteritis and diarrheal diseases related to ileal injury and intestinal flora disorder. Tea polyphenols (TP), a class of natural...
Thu, 11/07/2019 - 03:37
Author(s): Ding-qian Liu, Jun-li Zhang, Zhi-fen Pan, Jun-tao Mai, Heng-jun Mei, Yue Dai, Lu Zhang, Qing-zhong WangAbstractMycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), can persist in the host for decades without causing TB symptoms and can cause a latent infection, which is an intricate challenge of current TB control. The DosR regulon, which contains approximately...
Thu, 11/07/2019 - 03:36
Author(s): Hui Yang, Haoran Xiong, Kaihang Mi, Yingying Zhang, Xiaojun Zhang, Guohong ChenAbstractDue to the aquatic animal pathogens are numerous and specific, the pathogen invasion mechanisms are more complicated. The cell surface receptors play vital roles to understand these mechanisms. Syndecan is a cell surface protein and could function as a receptor involved bacteria and virus infections...
Thu, 11/07/2019 - 03:36
Author(s): Sophie Tongyu Wu, Susan R. Hammons, Rachel Silver, Jack A. Neal, Haley F. OliverAbstractFood safety climate and culture is an integral part of a healthy food safety system. While much research has been done on elements of food safety climate and culture, no data are available on their relationship with Listeria monocytogenes contamination at retail. We implemented a forty-four-question...
Thu, 11/07/2019 - 03:35
Author(s): James A. Karlowsky, Sibylle H. Lob, Krystyna M. Kazmierczak, Katherine Young, Mary R. Motyl, Daniel F. SahmAbstractβ-lactam- and multidrug-resistant (MDR) Gram-negative bacilli frequently cause lower respiratory tract infections (LRTIs) in patients housed in intensive care units (ICUs). Relebactam, a novel diazabicyclooctane inhibitor of Ambler class A and C β-lactamases, in...
Thu, 11/07/2019 - 03:35
Author(s): Samantha Bolten, Ganyu Gu, Yaguang Luo, Sam Van Haute, Bin Zhou, Pat Millner, Shirley A. Micallef, Xiangwu NouABSTRACTWashing in chlorinated water is widely practiced for commercial fresh produce processing. While known as an effective tool for mitigating food safety risks, chlorine washing could also represent an opportunity for spreading microbial contaminations under sub-optimal...
Thu, 11/07/2019 - 03:33
Author(s): Stefania Dentice Maidana, Cecilia Aristimuño Ficoseco, Daniela Bassi, Pier Sandro Cocconcelli, Edoardo Puglisi, Graciela Savoy, Graciela Vignolo, Cecilia FontanaAbstractChia, is a gluten-free, rich in proteins, oilseed that is “on trend” as an alternative ingredient in food production, adding nutritional value. As a reservoir of natural biodiversity, lactic acid bacteria development,...
Thu, 11/07/2019 - 03:29
This study investigated the occurrence of shiga toxin‐producing Escherichia coli (STEC), thermotolerant Campylobacter spp. and Salmonella spp. in Swedish dairy milk. A total of 302 inline milk filters were analyzed. Salmonella was not isolated from any filters. Polymerase chain reaction screening detected thermotolerant Campylobacter in 30.5% of the milk filters analyzed and it was isolated from...
Thu, 11/07/2019 - 03:29
The microbial population of kefir made from Korean kefir grain was profiled via next‐generation sequencing technology at the species level. Interestingly, Acetobacter fabarum was the second most predominent bacteria in kefir. We isolated Acetobacter fabarum DH1801 strain and revealed its potent and broad‐spectrum antimicrobial activity against pathogenic bacteria. This could contribute to the...
Thu, 11/07/2019 - 03:29
The quality of vacuum packed sea bass fillets treated with nanoemulsions based on commercial oils (hazelnut oil, corn oil, canola oil, soybean oil, olive oil, and sunflower oil) at 2 ± 2°C was evaluated by sensory, chemical (thiobarbituric acid reactive substances, peroxide value, total volatile basic nitrogen, and free fatty acids), and microbiological (total psychrophilic bacteria, total...
Thu, 11/07/2019 - 03:27
Prevalence of Salmonella in slaughter sheep and cattle was determined by International Organization for Standardization Method 6579 (ISO) and Vitek Immunodiagnostic Assay System UP Salmonella Phage Technology (VIDAS UP Salmonella SPT—VIDAS UP). A total of 400 healthy slaughter sheep (n = 200) and cattle (n = 200) carcass (C), fecal content (FC), mesenteric lymph node (MLN), liver (L), kidney (K...
Thu, 11/07/2019 - 03:27
The aim of this study was to determine the antimicrobial resistance characteristics of Listeria species isolated from foods and food processing environments, animal and human specimens in Iran. A systematic review of the papers published in Persian and English languages up to 20th May 2019 and indexed in the Scientific Information Database, PubMed, Scopus and Google Scholar databases using...
Thu, 11/07/2019 - 03:26
Toxigenic Vibrio cholerae strains, including strains in serogroups O1 and O139 associated with the clinical disease cholera, are ubiquitous in aquatic reservoirs, including fresh, estuarine, and marine environments. Humans acquire cholera by consuming water and/or food contaminated with the microorganism. The genome of toxigenic V. cholerae harbors a cholera-toxin producing prophage (CT-prophage...
Thu, 11/07/2019 - 03:26
Antimicrobial resistance is an increasing problem worldwide, and Salmonella spp. resistance to quinolone was classified by WHO in the high priority list. Recent studies in Europe and in the US reported the presence of small plasmids carrying quinolone resistance in Enterobacteriaceae isolated from poultry and poultry products. The aims of this study were to identify and characterize plasmid-...
Thu, 11/07/2019 - 03:26
Contaminated food-contact surfaces are recognized as the primary reason for recent L. monocytogenes outbreaks in caramel apples and cantaloupes, highlighting the significance of cleaning and sanitizing food-contact surfaces to ensure microbial safety of fresh produce. This study evaluated efficacies of four commonly used chemical sanitizers at practical concentrations against L. monocytogenes...
Thu, 11/07/2019 - 03:26
This study examines treatments of the bacterial pathogen Staphylococcus aureus, namely, in the context of its being a major cause of subclinical bovine mastitis. Such infections caused by S. aureus among dairy cows are difficult to detect and can easily become chronic, leading to reduced productivity and large losses for dairy manufacturers. In this study, the role of alternative sigma factor B (...
Thu, 11/07/2019 - 03:26
Shigellosis, caused by Shigella boydii type 1, is understudied and underreported. For 3 years, GEMS study identified 5.4% of all Shigella as S. boydii. We showed the prevalent serotypes of S. boydii in Bangladesh and phage-based diagnosis of S. boydii type 1, a rapid and low-cost approach. Previously typed 793 clinical S. boydii strains were used for serotype distribution. Twenty-eight...
Wed, 11/06/2019 - 03:38
The objective of this study was to assess the effects of low-dose zinc oxide (ZnO) supplemented with or without probiotic complex compared with pharmacological ZnO (3000 mg kg−1) on the performance, digestibility, blood metabolites, fecal Lactobacillus and enterobacteria counts of weaned piglets. One-hundred and twenty crossbred piglets were randomly allocated to three treatments based on their...
Wed, 11/06/2019 - 03:36
Author(s): Zhuoxing Zhang, Keke Han, Xiaoling Dai, Ruidong Zhang, Xueying Cao, Chao Zhang, Kaiqiang Wang, Xin Huang, Qian RenAbstractTwo lipopolysaccharides (LPS) and β-1, 3-glucan binding protein (LGBP), designated as PcLGBP isoform1 and PcLGBP isoform2, respectively, were identified from Procambarus clarkii in this study. The full-length cDNA of PcLGBP isoform1 was 1308 bp containing an open...
Wed, 11/06/2019 - 03:27
Vibrio parahemolyticus is a halophilic bacterium which causes widespread seafood poisoning pathogenicity. Although the incidence of disease caused by V. parahemolyticus was stepwise increased, the pathogenic mechanism remained unclear. Herein, the difference of V. parahemolyticus’s metabonomic which on blood agar and seawater beef extract peptone medium was detected via nuclear magnetic resonance...
Wed, 11/06/2019 - 03:27
ABSTRACT The Malaysian and global shrimp aquaculture production has been significantly impacted by acute hepatopancreatic necrosis disease (AHPND) typically caused by Vibrio parahaemolyticus harboring the pVA plasmid containing the pirAVp and pirBVp genes, which code for Photorhabdus insect-related (Pir) toxin. The limited genomic resource for V. parahaemolyticus strains from Malaysian...
Wed, 11/06/2019 - 03:27
ABSTRACT A thorough understanding of the mechanisms of Rcs and EnvZ/OmpR phosphorelay systems that allow Yersinia enterocolitica to thrive in various environments is crucial to prevent and control Y. enterocolitica infections. In this study, we showed that RcsB and OmpR have the ability to function differently in modulating a diverse array of physiological processes in Y. enterocolitica. The...
Wed, 11/06/2019 - 03:27
ABSTRACT Humans and animals are considered typical hosts for Salmonella, however, also plants can be colonized. Tomatoes were linked to salmonellosis outbreaks already on several occasions. The aim of this study was, therefore, to establish a comprehensive view on the interaction between Salmonella enterica and tomatoes, and to test the hypothesis that colonization of plants is an interactive...
Wed, 11/06/2019 - 03:26
SUMMARY Microbiological safety and quality of fresh chicken meat are important concerns to industry. The objective of this study was to investigate the effects of in-package, non-thermal high voltage dielectric barrier discharge (HVDBD) treatment on microbial quality, safety, and color of fresh chicken breast meat (pectoralis major). Boneless skinless chicken breast meat was collected from a...
Wed, 11/06/2019 - 03:26
SUMMARY Salmonella is a bacterium usually associated with mild gastroenteritis in chickens, but strains of the serotype Gallinarum can result in 2 severe systemic chicken diseases: fowl typhoid (by biovar Gallinarum) and pullorum disease (by biovar Pullorum). These diseases can be controlled by immunization with a specific vaccine (SG 9R). The aim of this study was to characterize recent...
Wed, 11/06/2019 - 03:26
SUMMARY Salmonella infection in humans from poultry meat and eggs can lead to symptoms including diarrhea, fever, and vomiting. Salmonella can be inhibited by acidifiers, which alter the bacterial cell membrane by disrupting bacterial nutrient transport and energy metabolism. This study analyzes the effects of a commercial acidifier, containing formic, propionic, and acetic acids combined with...
Wed, 11/06/2019 - 03:26
SUMMARY Drinking water contaminated with Salmonella could serve as a source for cecal colonization of the pathogen in birds. In this study, we investigated the efficacy of a generally recognized as safe—status essential oil (lemongrass essential oil, LGEO) against multidrug-resistant Salmonella enterica serovar Heidelberg (S. Heidelberg) in poultry drinking water. Farm water with and without...

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