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https://www.readbyqxmd.com/read/28213220/receptor-based-screening-assays-for-the-detection-of-antibiotics-residues-a-review
#1
REVIEW
Saeed Ahmed, Jianan Ning, Guyue Cheng, Ijaz Ahmad, Jun Li, Liu Mingyue, Wei Qu, Mujahid Iqbal, M A B Shabbir, Zonghui Yuan
Consumer and regulatory agencies have a high concern to antibiotic residues in food producing animals, so appropriate screening assays of fast, sensitive, low cost, and easy sample preparation for the identification of these residues are essential for the food-safety insurance. Great efforts in the development of a high-throughput antibiotic screening assay have been made in recent years. Concerning the screening of antibiotic residue, this review elaborate an overview on the availability, advancement and applicability of antibiotic receptor based screening assays for the safety assessment of antibiotics usage (i...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28213031/antimicrobial-resistance-and-its-association-with-tolerance-to-heavy-metals-in-agriculture-production
#2
REVIEW
Zhongyi Yu, Lynda Gunn, Patrick Wall, Séamus Fanning
Antimicrobial resistance is a recognized public health challenge that since its emergence limits the therapeutic options available to veterinarians and clinicians alike, when treatment is warranted. This development is further compounded by the paucity of new antibiotics. The agri-food industry benefits from the availability of antimicrobial compounds for food-animal production and crop protection. Nonetheless, their improper use can result in the selection for bacteria that are phenotypically resistant to these compounds...
June 2017: Food Microbiology
https://www.readbyqxmd.com/read/28213030/high-hydrostatic-pressure-effects-on-listeria-monocytogenes-and-l-innocua-evidence-for-variability-in-inactivation-behaviour-and-in-resistance-to-pediocin-bacha-6111-2
#3
Carolina Bruschi, Norton Komora, Sónia Marília Castro, Jorge Saraiva, Vânia Borges Ferreira, Paula Teixeira
The effect of high hydrostatic pressure (HHP) on the survival of 14 strains of Listeria monocytogenes from food or clinical origins, selected to represent different pheno and genotypes, was evaluated. Stationary phase cells were submitted to 300, 400 and 500 MPa at 10 °C, for 5 min. A high variability in the resistance of L. monocytogenes to pressure was observed, and particularly two strains isolated from food were significantly more baroresistant than the rest. Strains of L. monocytogenes resistant to one or more antibiotics exhibited significantly higher levels of survival after the high pressure treatment at 400 MPa...
June 2017: Food Microbiology
https://www.readbyqxmd.com/read/28208296/ultrasensitive-self-powered-aptasensor-based-on-enzyme-biofuel-cell-and-dna-bioconjugate-a-facile-and-powerful-tool-for-antibiotic-residue-detection
#4
Panpan Gai, Chengcheng Gu, Ting Hou, Feng Li
Herein, we reported a novel ultrasensitive one-compartment enzyme biofuel cells (EBFCs)-based self-powered aptasensing platform for antibiotic residue detection. By taking full advantage of the unique features of both EBFCs-based self-powered sensors and aptamers, the as-proposed aptasensing platform has the merits of simple instrumentation, anti-interference ability, high selectivity, and low cost. In this study, DNA bioconjugate, i.e., SiO2@gold nanoparticles-complementary strand of aptamer (SiO2@AuNPs-csDNA), was elaborately designed and played a key role in blocking the mass transport of glucose to the bioanode...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28207310/microbiological-quality-and-prevalence-of-%C3%AE-lactam-antibiotic-resistance-genes-in-oysters-crassostrea-rhizophorae
#5
Maria Aparecida da RessurreiÇão Brandão, Amanda Teixeira Sampaio Lopes, Maria Tereza da Silva Neta, Rhyan Barros Farias de Oliveira, Rachel Passos Rezende, George Rêgo Albuquerque, Verônica Dias Gonçalves, Dália Dos Prazeres Rodrigues, Guisla Boehs, Bianca Mendes Maciel
The microbiological quality of oysters reflects the microbiological quality of their habitats because they are filter feeders. The objective of this study was to assess the bacterial composition of the edible oyster Crassostrea rhizophorae in urban and preserved estuaries. Particularly, we assessed the presence of pathogenic bacteria, investigated antibiotic susceptibility in bacterial isolates, and quantified β-lactam antibiotic resistance genes (blaTEM, blaSHV, and blaKPC) via quantitative PCR of oyster DNA...
February 16, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28202802/multi-laboratory-survey-to-evaluate-salmonella-prevalence-in-diarrheic-and-non-diarrheic-dogs-and-cats-in-the-usa-between-2012-and-2014
#6
Renate Reimschuessel, Michael Grabenstein, Jake Guag, Sarah M Nemser, Kyunghee Song, Junshan Qiu, Kristin A Clothier, Barbara A Byrne, Stanley L Marks, Kyran Cadmus, Kristy Pabilonia, Susan Sanchez, Sreekumari Rajeev, Steve Ensley, Timothy S Frana, Albert E Jergens, Kimberly H Chappell, Siddhartha Thakur, Beverly Byrum, Jing Cui, Yan Zhang, Matthew M Erdman, Shelley C Rankin, Russell Daly, Seema Das, Laura Ruesch, Sara D Lawhon, Shuping Zhang, Timothy Baszler, Dubraska Diaz-Campos, Faye Hartmann, Ogi Okwumabua
Eleven laboratories collaborated to determine the periodic prevalence of Salmonella in a population of dogs and cats in the USA visiting veterinary clinics. Fecal samples (2965) solicited from 11 geographically dispersed veterinary testing laboratories were collected in 36 states between January 2012 and April 2014 and tested using a harmonized method. The overall study prevalence of Salmonella in cats (3 of 542) was <1%. Prevalence in dogs (60 of 2422) was 2.5%. Diarrhea was present in only 55% of positive dogs; however 3...
February 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28199151/antimicrobial-resistance-percentages-of-salmonella-and-shigella-in-seafood-imported-to-jordan-higher-percentages-and-more-diverse-profiles-in-shigella
#7
Mohammad M Obaidat, Alaa E Bani Salman
This study determined the prevalence and antimicrobial resistance of human-specific ( Shigella spp.) and zoonotic ( Salmonella enterica ) foodborne pathogens in internationally traded seafood. Sixty-four Salmonella and 61 Shigella isolates were obtained from 330 imported fresh fish samples from Egypt, Yemen, and India. The pathogens were isolated on selective media, confirmed by PCR, and tested for antimicrobial resistance. Approximately 79 and 98% of the Salmonella and Shigella isolates, respectively, exhibited resistance to at least one antimicrobial, and 8 and 49% exhibited multidrug resistance (resistance to three or more antimicrobial classes)...
February 15, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28199148/presence-and-antimicrobial-resistance-of-escherichia-coli-in-ready-to-eat-foods-in-shaanxi-china
#8
Allah Bux Baloch, Hua Yang, Yuqing Feng, Meili Xi, Qian Wu, Qinhao Yang, Jingsi Tang, Xiangxiang He, Yingping Xiao, Xiaodong Xia
The aim of this study was to determine the presence and characteristics of Escherichia coli in ready-to-eat (RTE) foods. A total of 300 RTE foods samples were collected in Shaanxi Province, People's Republic of China: 50 samples of cooked meat, 165 samples of vegetable salad, 50 samples of cold noodles, and 35 samples of salted boiled peanuts. All samples were collected during summer (in July to October) 2011 and 2012 and surveyed for the presence of E. coli . E. coli isolates recovered were classified by phylogenetic typing using a PCR assay...
February 15, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28194411/antibiotic-resistance-of-campylobacter-recovered-from-faeces-and-carcasses-of-healthy-livestock
#9
Akosua B Karikari, Kwasi Obiri-Danso, Enoch H Frimpong, Karen A Krogfelt
Campylobacter is of major significance in food safety and human and veterinary medicine. This study highlighted resistance situation in the area of veterinary public health in Ghana. Using selective mCCDA agar, isolates were confirmed phenotypically on API CAMPY and genotypically by multiplex PCR of IpxA gene. The susceptibility profile of species to common and relevant antibiotics was determined by the Kirby-Bauer disk diffusion method. Cattle, sheep, goat, and pig faecal samples analysed, respectively, yielded 13...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28191448/a-food-grade-expression-system-for-d-psicose-3-epimerase-production-in-bacillus-subtilis-using-an-alanine-racemase-encoding-selection-marker
#10
Jingqi Chen, Zhaoxia Jin, Yuanming Gai, Jibin Sun, Dawei Zhang
BACKGROUND: Food-grade expression systems require that the resultant strains should only contain materials from food-safe microorganisms, and no antibiotic resistance marker can be utilized. To develop a food-grade expression system for d-psicose 3-epimerase production, we use an alanine racemase-encoding gene as selection marker in Bacillus subtilis. RESULTS: In this study, the d-alanine racemase-encoding gene dal was deleted from the chromosome of B. subtilis 1A751 using Cre/lox system to generate the food-grade host...
2017: Bioresources and Bioprocessing
https://www.readbyqxmd.com/read/28190396/in-vitro-screening-of-an-fda-approved-library-against-eskape-pathogens
#11
Waleed Younis, Ahmed AbdelKhalek, Abdelrahman S Mayhoub, Mohamed N Seleem
Bacterial resistance to conventional antibiotics is an increasingly serious threat to public health worldwide that requires immediate exploration and the development of novel antimicrobial compounds. Drug repurposing is an inexpensive and untapped source of new antimicrobial leads, and it holds many attractive features warranting further attention for antimicrobial drug discovery. In an effort to repurpose drugs and explore new leads in the field of antimicrobial drug discovery, we performed a whole-cell screening assay of 1,600 Food and Drug Administration (FDA) approved drugs against Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter cloacae (ESKAPE) pathogens...
February 9, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28187378/development-of-an-analytical-method-for-detecting-nitrofurans-in-bee-pollen-by-liquid-chromatography-electrospray-ionization-tandem-mass-spectrometry
#12
Mi Sun Park, Kyung Tae Kim, Jong Seong Kang
Bee pollen collected by honeybees, which is in powdered form, is a good nutritional supplement. Nitrofuran antibiotics are assumed not to be present in bee pollen, which is important as the level of antibiotics in bee pollen is strongly regulated in many countries. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to detect nitrofurans in honey has been developed, but this method is not suitable for bee pollen because of it being in powdered form. During preparation of bee pollen samples, the dispersal of powder particles in an aqueous solution often makes them susceptible to forming an emulsion with solvent components such as hexane and ethyl acetate...
January 9, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28182844/characterization-of-antibiotic-resistance-genes-from-lactobacillus-isolated-from-traditional-dairy-products
#13
Huiling Guo, Lin Pan, Lina Li, Jie Lu, Laiyu Kwok, Bilige Menghe, Heping Zhang, Wenyi Zhang
Lactobacilli are widely used as starter cultures or probiotics in yoghurt, cheese, beer, wine, pickles, preserved food, and silage. They are generally recognized as safe (GRAS). However, recent studies have shown that some lactic acid bacteria (LAB) strains carry antibiotic resistance genes and are resistant to antibiotics. Some of them may even transfer their intrinsic antibiotic resistance genes to other LAB or pathogens via horizontal gene transfer, thus threatening human health. A total of 33 Lactobacillus strains was isolated from fermented milk collected from different areas of China...
February 9, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28181543/meca-related-structure-in-methicillin-resistant-coagulase-negative-staphylococci-from-street-food-in-taiwan
#14
Tsung-Ying Yang, Wei-Wen Hung, Lin Lin, Wei-Chun Hung, Sung-Pin Tseng
Antibiotic-resistant patterns, a mecA homologue complex, and staphylococcal cassette chromosome mec (SCCmec) were analysed in samples of ready-to-eat (RTE) street food in Taiwan. RTE food samples (270) were collected in three densely populated Taiwanese cities between June and November 2014. Among 14 strains being identified as methicillin-resistant coagulase-negative staphylococci (MRCoNS), genetic diversities was determined by PFGE analysis. SCCmec types IV, V, VIII and TXG-24 were detected in 9, and mecASs (a mecA homologue) detected in 8...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28179629/antimicrobial-resistance-and-antimicrobial-use-animal-monitoring-policies-in-europe-where-are-we
#15
Jorge Pinto Ferreira, Katharina Staerk
The World Health Organization has recognized antimicrobial resistance as one of the top three threats to human health. Any use of antibiotics in animals will ultimately affect humans and vice versa. Appropriate monitoring of antimicrobial use and resistance has been repeatedly emphasized along with the need for global policies. Under the auspices of the European Union research project, EFFORT, we mapped antimicrobial use and resistance monitoring programs in ten European countries. We then compared international and European guidelines and policies...
February 8, 2017: Journal of Public Health Policy
https://www.readbyqxmd.com/read/28178381/comparison-of-the-antimicrobial-and-sanitizer-resistance-of-salmonella-isolates-from-chicken-slaughter-processes-in-korea
#16
So Youn Youn, Ok Mi Jeong, Byung Kook Choi, Suk Chan Jung, Min Su Kang
Salmonella is a foodborne pathogen worldwide. Outbreaks of Salmonella are commonly associated with consumption of contaminated foods such as poultry products. Therefore, the objective of this study was to determine the occurrence, biofilm formation, antibiotic resistance, and sanitizer resistance of Salmonella enterica isolated from chicken carcasses. A total of 318 samples were collected from 15 chicken slaughterhouses in 8 provinces of Korea. They were then examined for Salmonella contamination. S. enterica isolates were tested for their susceptibilities to 15 antimicrobials by broth microdilution method...
February 8, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28177853/antimicrobial-resistance-and-virulence-associated-genes-of-campylobacter-spp-isolated-from-raw-milk-fish-poultry-and-red-meat
#17
Mojtaba Raeisi, Rahem Khoshbakht, Ezzat Allah Ghaemi, Mahsan Bayani, Mohammad Hashemi, Navisa Sadat Seyedghasemi, Hesamaddin Shirzad-Aski
This study was designed and conducted to evaluate the frequency, antimicrobial resistance, and presence of six virulence-associated genes among thermophilic Campylobacters isolated from raw milk, poultry (chicken, turkey, and duck), fish, cattle, and sheep meat. Out of 590 samples, which were recovered from different origins, 141 (23.9%) samples were positive for Campylobacters. Campylobacter spp. was isolated in 40.8% (106/260), 14% (28/200), and 8.7% (7/80) of poultry meat, red meat, and milk samples, respectively...
February 8, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28177414/fate-and-effect-of-antibiotics-in-beef-and-dairy-manure-during-static-and-turned-composting
#18
Partha Ray, Chaoqi Chen, Katharine F Knowlton, Amy Pruden, Kang Xia
Manure composting has general benefits for production of soil amendment, but the effects of composting on antibiotic persistence and effects of antibiotics on the composting process are not well-characterized, especially for antibiotics commonly used in dairy cattle. This study provides a comprehensive, head-to-head, replicated comparison of the effect of static and turned composting on typical antibiotics used in beef and dairy cattle in their actual excreted form and corresponding influence on composting efficacy...
January 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28177232/adaptation-to-biocides-cetrimide-and-chlorhexidine-in-bacteria-from-organic-foods-association-with-tolerance-to-other-antimicrobials-and-physical-stresses
#19
Rebeca Gadea, Nicolas Glibota, Ruben Pérez Pulido, Antonio Galvez, Elena Ortega
Chlorhexidine (CH) and quaternary ammonium compounds (QAC), like cetrimide (CE) are widely used as disinfectants because of their broad antimicrobial spectrum. However, their frequent use for disinfection in different settings may promote bacterial drug resistance against both biocides and clinically relevant antibiotics. This study analyzes the effects of step-wise exposure to cetrimide (CE) and chlorhexidine (CH) of bacteria from organic foods and previously classified as sensitive to biocides. Gradual exposure of these strains to biocides resulted in mainly transient decreased antimicrobial susceptibility to other biocides and to antibiotics...
February 8, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28171816/the-western-disease-autism-and-somali-parents-embodied-health-movements
#20
Claire Laurier Decoteau
There is some statistical evidence indicating that Somali refugees and immigrants have high rates of autism spectrum disorder (ASD). Somalis in North America call autism the "Western disease" because there is no word for autism in the Somali language and because many believe it does not exist in Somalia. In Toronto, Somali parents have forged an "epistemic community," united around a coherent theory of the development of autism, its defining features, and most successful therapies. They work together with researchers to support the theory that gut bacteria is a causal factor for the development of autism...
February 1, 2017: Social Science & Medicine
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