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https://www.readbyqxmd.com/read/29475122/blue-light-irradiation-triggers-the-antimicrobial-potential-of-zno-nanoparticles-on-drug-resistant-acinetobacter-baumannii
#1
Ming-Yeh Yang, Kai-Chih Chang, Liang-Yu Chen, Po-Ching Wang, Chih-Chiang Chou, Zhong-Bin Wu, Anren Hu
Photodynamic inactivation (PDI) is a non-invasive and safe therapeutic method for microbial infections. Bacterial antibiotic resistance is caused by antibiotics abuse. Drug-resistant Acinetobacter spp. is a serious problem in hospitals around the world. These pathogens from nosocomial infections have high mortality rates in frailer people, and Acinetobacter spp. is commonly found in immunocompromised patients. Visible light is safer than ultraviolet light (UV) for PDI of nosocomial pathogens with mammalian cells...
February 6, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29474472/within-the-fortress-a-specialized-parasite-is-not-discriminated-against-in-a-social-insect-society
#2
Emilia Solá Gracia, Charissa de Bekker, Ephraim M Hanks, David P Hughes
Social insect colonies function cohesively due, in part, to altruistic behaviors performed towards related individuals. These colonies can be affected by parasites in two distinct ways, either at the level of the individual or the entire colony. As such, colonies of social insects can experience conflict with infected individuals reducing the cohesiveness that typifies them. Parasites of social insects therefore offer us a framework to study conflicts within social insect colonies in addition to the traditionally viewed conflicts afforded by groups of low genetic relatedness due to multiple mating for example...
2018: PloS One
https://www.readbyqxmd.com/read/29474153/consumers-use-of-personal-electronic-devices-in-the-kitchen
#3
Amy M Lando, Michael C Bazaco, Yi Chen
Smartphones, tablets, and other personal electronic devices have become ubiquitous in Americans' daily lives. These devices are used by people throughout the day, including while preparing food. For example, a device may be used to look at recipes and therefore be touched multiple times during food preparation. Previous research has indicated that cell phones can harbor bacteria, including opportunistic human pathogens such as Staphylococcus and Klebsiella spp. This investigation was conducted with data from the 2016 Food Safety Survey (FSS) and from subsequent focus groups to determine the frequency with which consumers use personal electronic devices in the kitchen while preparing food, the types of devices used, and hand washing behaviors after handling these devices...
February 23, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29474152/a-novel-method-for-predicting-anisakid-nematode-infection-of-atlantic-cod-using-rough-set-theory
#4
Barbara WąSikowska, Iwona Bielat, Monika Legierko, Beata Więcaszek
Atlantic cod ( Gadus morhua L.) is one of the most important fish species in the fisheries industries of many countries; however, these fish are often infected with parasites. The detection of pathogenic larval nematodes is usually performed in fish processing facilities by visual examination using candling or by digesting muscles in artificial digestive juices, but these methods are both time and labor intensive. This article presents an innovative approach to the analysis of cod parasites from both the Atlantic and Baltic Sea areas through the application of rough set theory, one of the methods of artificial intelligence, for the prediction of food safety in a food production chain...
February 23, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29474149/fruit-flies-as-potential-vectors-of-foodborne-illness
#5
E P Black, G J Hinrichs, S J Barcay, D B Gardner
Fruit flies are a familiar sight in many food service facilities. Although they have been long considered as "nuisance pests," some of their typical daily activities suggest they may pose a potential public health threat. The aim of this study was to provide evidence of the ability of small flies to transfer bacteria from a contaminated source, food, or waste to surfaces or ready-to-eat food. Laboratory experiments were conducted by using purpose-built fly enclosures to assess the bacterial transfer capability of fruit flies...
February 23, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29474145/prevalence-and-antimicrobial-resistance-of-yersinia-enterocolitica-in-retail-seafood
#6
Chenyang Li, Greta Gölz, Thomas Alter, Andrea Barac, Stefan Hertwig, Carolin Riedel
Yersinia enterocolitica is a zoonotic enteropathogenic bacterium that can cause acute gastroenteritis and mesenteric lymphadenitis. Although Y. enterocolitica is common in animals, food, and the environment, the reservoirs and transmission routes of this pathogen are still not fully understood. The aim of our study was to determine the prevalence of Y. enterocolitica in seafood in Germany, because only limited data are available on that topic. Seafood samples were purchased from retail shops in Berlin, Germany and examined for the presence of Y...
February 23, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29474142/occurrence-genotyping-and-antibiotic-susceptibility-of-cronobacter-spp-in-drinking-water-and-food-samples-from-northeast-china
#7
Peng Fei, Yichao Jiang, Shaoying Gong, Ran Li, Yan Jiang, Xiujuan Yuan, Ziyuan Wang, Huaibin Kang, Md Aslam Ali
Cronobacter species (formerly Enterobacter sakazakii) are emerging opportunistic bacterial pathogens that can infect both infants and adults. This study was conducted to isolate and genotype diverse Cronobacter species from drinking water, chilled fresh pork, powdered infant formula, instant noodles, cookies, fruits, vegetables, and dishes in Northeast China and to evaluate the antibiotic resistance and susceptibility of the isolates. Thirty-four Cronobacter strains were isolated and identified: 21 C. sakazakii isolates (61...
February 23, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29473955/growth-capacity-of-a-novel-potential-probiotic-lactobacillus-paracasei-k5-strain-incorporated-in-industrial-white-brined-cheese-as-an-adjunct-culture
#8
Antonia Terpou, Loulouda Bosnea, Maria Kanellaki, Stavros Plessas, Argyro Bekatorou, Eugenia Bezirtzoglou, Athanasios A Koutinas
In this study, a novel potential probiotic strain Lactobacillus paracasei K5, previously isolated from traditional Greek Feta cheese and kefir grains, was evaluated as an adjunct culture for industrial white brined cheese production. Targeting industrial applications, apart from free cell cultures, a novel ready-to-use freeze-dried immobilized biocatalyst was prepared. The biocatalyst composed of L. paracasei K5 cells immobilized on delignified wheat bran prebiotic carrier and was freeze-dried without cryoprotectants...
February 23, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29473887/characterization-stability-and-biological-activity-in-vitro-of-cathelicidin-bf-30-loaded-4-arm-star-shaped-peg-plga-microspheres
#9
Yueli Bao, Shanrong Wang, Hongli Li, Yunjiao Wang, Haiyun Chen, Minglong Yuan
BF-30 is a single chain polypeptide of an N-segment with an α-helix from cathelicidin gene encoding, and it contains 30 amino acid residues, with a relative molecular mass and isoelectric point of 3637.54 and 11.79, respectively. Cathelicidin-BF-30 was entrapped in four-arm star-shaped poly(ethylene glycol-b-dl-lactic acid-co-glycolic acid) block copolymers (4-arm-PEG-PLGA) by a double-emulsion solvent-evaporation method. Three release phases of cathelicidin-BF-30loaded 4-arm-PEG-PLGA microspheres were observed, including an initial burst-release phase, followed by a lag phase with minimal drug release and finally a secondary zero-order release phase...
February 23, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29473025/dynamics-and-control-of-flagella-assembly-in-salmonella-typhimurium
#10
Chandrani Das, Chaitanya Mokashi, Sharmila S Mande, Supreet Saini
The food-borne pathogen Salmonella typhimurium is a common cause of infections and diseases in a wide range of hosts. One of the major virulence factors associated to the infection process is flagella, which helps the bacterium swim to its preferred site of infection inside the host, the M-cells (Microfold cells) lining the lumen of the small intestine. The expression of flagellar genes is controlled by an intricate regulatory network. In this work, we investigate two aspects of flagella regulation and assembly: (a) distribution of the number of flagella in an isogenic population of bacteria and (b) dynamics of gene expression post cell division...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29472791/antimicrobial-activity-of-some-plant-extracts-against-bacterial-strains-causing-food-poisoning-diseases
#11
Ashraf A Mostafa, Abdulaziz A Al-Askar, Khalid S Almaary, Turki M Dawoud, Essam N Sholkamy, Marwah M Bakri
Prevention of food spoilage and food poisoning pathogens is usually achieved by use of chemical preservatives which have negative impacts including: human health hazards of the chemical applications, chemical residues in food & feed chains and acquisition of microbial resistance to the used chemicals. Because of such concerns, the necessity to find a potentially effective, healthy safer and natural alternative preservatives is increased. Within these texts, Plant extracts have been used to control food poisoning diseases and preserve foodstuff...
February 2018: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/29472764/an-alternative-approach-for-evaluating-the-phenotypic-virulence-factors-of-pathogenic-escherichia-coli
#12
Kamelia M Osman, Ashgan M Hessain, Usama H Abo-Shama, Zeinab M Girh, Saleh A Kabli, Hassan A Hemeg, Ihab M Moussa
Escherichia coli is a recognized zoonotic food-borne pathogen; however, the use of polymerase chain reaction (PCR) in the underdeveloped countries to differentiate pathogenic from non-pathogenic E. coli is a problematic issue. Our grail was to assess the phenotypic virulence markers motility, hemolysin, congo red agar, embryo lethality assay and serum resistance for pathogenic E. coli (PEC) correlated to PCR tests which is currently used world-wide to evaluate the PEC. The 448 strains of Escherichia coli that were isolated from different sources, were characterized for phenotypic virulence factors such as motility, hemolysin, Congo red binding, Embryo Lethality assay (ELA) and serum resistance, as well as antibiotic susceptibility using disc diffusion method to 23 antibiotics ...
February 2018: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/29472022/is-food-protein-induced-enterocolitis-syndrome-only-a-non-ige-mediated-food-allergy
#13
S Miceli Sopo, C Fantacci, G Bersani, A Romano, L Liotti, S Monaco
Food protein induced enterocolitis syndrome (FPIES) is classified as non-IgE-mediated or cell-mediated food allergy, although there is an atypical phenotype so defined for the presence of specific IgEs. All diagnostic criteria for FPIES include the absence of skin or respiratory symptoms of IgE-mediated type. We present four cases that suggest that specific IgEs may have a pathogenic role, resulting in the existence of different FPIES phenotypes. This could be important from a diagnostic and therapeutic point of view...
February 19, 2018: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/29471479/seasonal-effects-and-the-impact-of-in-hive-pesticide-treatments-on-parasite-pathogens-and-health-of-honey-bees
#14
Brenna E Traver, Haley K Feazel-Orr, Katelyn M Catalfamo, Carlyle C Brewster, Richard D Fell
Honey bee, Apis mellifera (L.; Hymenoptera: Apidae), populations are in decline and their losses pose a serious threat for crop pollination and food production. The specific causes of these losses are believed to be multifactorial. Pesticides, parasites and pathogens, and nutritional deficiencies have been implicated in the losses due to their ability to exert energetic stress on bees. While our understanding of the role of these factors in honey bee colony losses has improved, there is still a lack of knowledge of how they impact the immune system of the honey bee...
February 17, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29471265/role-of-rpos-in-stress-resistance-quorum-sensing-and-spoilage-potential-of-pseudomonas-fluorescens
#15
Xiaoxiang Liu, Lei Ji, Xu Wang, Jianrong Li, Junli Zhu, Aihua Sun
Microorganism activities are considered the main cause of most food spoilage, leading to great economic losses. Pseudomonas fluorescens is a Gram-negative bacterium that is widely found in food and has high spoilage activity. RpoS is considered an important global regulator involved in stress survival and virulence in many pathogens. Thus, it is very possible that RpoS plays an important role in spoilage regulation in P. fluorescens. In this study an in-frame deletion mutation of rpoS was constructed to explore its function in P...
February 14, 2018: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29471255/non-stop-aptasensor-capable-of-rapidly-monitoring-norovirus-in-a-sample
#16
Brian Kim, Kang Wook Chung, Ji Hoon Lee
A cost-effective and simple biosensor was developed for the accurate and rapid monitoring of norovirus GII in a sample. The modified DNA aptamer, 5 guanines linked to conventional DNA aptamer, designed for the research, was able to rapidly capture norovirus GII in tap water as well artificial urine. In addition, the extra guanines of the modified DNA aptamer enhanced the sensitivity of biosensor with guanine chemiluminescence detection based on the principle of intra chemiluminescent resonance transfer (Intra-CRET)...
February 11, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29470558/hic1-links-retinoic-acid-signalling-to-group-3-innate-lymphoid-cell-dependent-regulation-of-intestinal-immunity-and-homeostasis
#17
Kyle Burrows, Frann Antignano, Alistair Chenery, Michael Bramhall, Vladimir Korinek, T Michael Underhill, Colby Zaph
The intestinal immune system must be able to respond to a wide variety of infectious organisms while maintaining tolerance to non-pathogenic microbes and food antigens. The Vitamin A metabolite all-trans-retinoic acid (atRA) has been implicated in the regulation of this balance, partially by regulating innate lymphoid cell (ILC) responses in the intestine. However, the molecular mechanisms of atRA-dependent intestinal immunity and homeostasis remain elusive. Here we define a role for the transcriptional repressor Hypermethylated in cancer 1 (HIC1, ZBTB29) in the regulation of ILC responses in the intestine...
February 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29470426/surface-plasmon-resonance-and-bending-loss-based-u-shaped-plastic-optical-fiber-biosensors
#18
Ariadny da S Arcas, Fábio da S Dutra, Regina C S B Allil, Marcelo M Werneck
Escherichia coli ( E. coli ) is a large and diverse bacteria group that inhabits the intestinal tract of many mammals. Most E. coli strains are harmless, however some of them are pathogenic, meaning they can make one sick if ingested. By being in the feces of animals and humans, its presence in water and food is used as indicator of fecal contamination. The main method for this microorganism detection is the bacterial culture medium that is time-consuming and requires a laboratory with specialized personnel...
February 22, 2018: Sensors
https://www.readbyqxmd.com/read/29469931/development-of-portable-flow-through-electrochemical-sanitizing-unit-to-generate-near-neutral-electrolyzed-water
#19
Jufang Zhang, Hongshun Yang, Joel Zhi Yang Chan
We developed a portable flow-through, electrochemical sanitizing unit to produce near neutral pH electrolyzed water (producing NEW). Two methods of redirecting cathode yields back to the anode chamber and redirecting anode yields the cathode chamber were used. The NEW yields were evaluated, including: free available chlorine (FAC), oxidation-reduction potential (ORP), and pH. The performances of 2 electrodes (RuO2 -IrO2 /TiO2 and IrO2 -Ta2 O5 /TiO2 ) were investigated. The unit produced NEW at pH 6.46 to 7...
February 22, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29467772/genetic-and-genomic-tools-to-asssist-sugar-beet-improvement-the-value-of-the-crop-wild-relatives
#20
Filipa Monteiro, Lothar Frese, Sílvia Castro, Maria C Duarte, Octávio S Paulo, João Loureiro, Maria M Romeiras
Sugar beet ( Beta vulgaris L. ssp. vulgaris ) is one of the most important European crops for both food and sugar production. Crop improvement has been developed to enhance productivity, sugar content or other breeder's desirable traits. The introgression of traits from Crop Wild Relatives (CWR) has been done essentially for lessening biotic stresses constraints, namely using Beta and Patellifolia species which exhibit disease resistance characteristics. Several studies have addressed crop-to-wild gene flow, yet, for breeding programs genetic variability associated with agronomically important traits remains unexplored regarding abiotic factors...
2018: Frontiers in Plant Science
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