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https://www.readbyqxmd.com/read/29777679/development-of-dnazyme-based-pcr-signal-cascade-amplification-for-visual-detection-of-listeria-monocytogenes-in-food
#1
Zhanmin Liu, Chenhui Yao, Cuiyun Yang, Yanming Wang, Sibao Wan, Junyi Huang
Listeria monocytogenes is an important food-borne pathogen, and it can cause severe diseases. Rapid detection of L. monocytogenes is crucial to control this pathogen. A simple and robust strategy based on the cascade of PCR and G-quadruplex DNAzyme catalyzed reaction was used to detect L. monocytogenes. In the presence of hemin and the aptamer formed during PCR, the catalytic horseradish peroxidase-mimicking G-quadruplex DNAzymes allow the colorimetric responses of target DNA from L. monocytogenes. This assay can detect genomic DNA of L...
May 16, 2018: Analytical Biochemistry
https://www.readbyqxmd.com/read/29776540/unconventional-application-of-gold-nanoclusters-zn-mof-composite-for-fluorescence-turn-on-sensitive-detection-of-zinc-ion
#2
Yuanyuan Li, Xue Hu, Xiaodan Zhang, Haiyan Cao, Yuming Huang
Contrary to organic solvent-induced aggregation of Au nanoclusters (AuNCs), herein, we reported aggregation induced emission enhancement (AIEE) of AuNCs in an aqueous media through confinement of AuNCs by in situ formed Zn-MOF for detecting Zn2+ . Glutathione capped AuNCs (GSH-AuNCs) was synthesized through reduction of Au3+ by glutathione. Zn2+ could significantly enhance the fluorescence of GSH-AuNCs upon addition of 2-methylimidazole, which was attributed to the formation of Zn-MOF. XRD and TEM were used to characterize the in situ formed Zn-MOF...
September 18, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29776493/mechanisms-in-bariatric-surgery-gut-hormones-diabetes-resolution-and-weight-loss
#3
Jens Juul Holst, Sten Madsbad, Kirstine N Bojsen-Møller, Maria Saur Svane, Nils Bruun Jørgensen, Carsten Dirksen, Christoffer Martinussen
Gastric bypass surgery leads to profound changes in the secretion of gut hormones with effects on metabolism, appetite, and food intake. Here, we discuss their contributions to the improvement in glucose tolerance and the weight loss that results from the operations. We find that the improved glucose tolerance is due the following events: a negative energy balance and resulting weight loss, which improve first hepatic and later peripheral insulin sensitivity, in combination with increased postprandial insulin secretion elicited particularly by exaggerated glucagon-like peptide-1 responses...
May 2018: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29776460/validation-of-the-betastar-%C3%A2-advanced-for-beta-lactams-test-kit-for-the-screening-of-bulk-tank-and-tanker-truck-milks-for-the-presence-of-beta-lactam-drug-residues
#4
Andrew Denhartigh, Lindsay Reynolds, Katherine Palmer, Frank Klein, Jennifer Rice, John J Rejman
A validation study was conducted for an immunochromatographic method (BetaStar® Advanced for Beta-lactams) for the detection of beta-lactam residues in raw, commingled bovine milk. The assay detected amoxicillin, ampicillin, cloxacillin, penicillin, cephapirin, and ceftiofur below the U.S. Food and Drug Administration tolerance levels but above the maximum sensitivity thresholds established by the National Conference on Interstate Milk Shipments. The results of internal and independent laboratory dose-response studies employing spiked samples were in agreement...
May 18, 2018: Journal of AOAC International
https://www.readbyqxmd.com/read/29775705/effects-of-different-chemical-modifications-on-the-antibacterial-activities-of-polysaccharides-sequentially-extracted-from-peony-seed-dreg
#5
Xiao-Li Li, Kiran Thakur, Yuan-Yuan Zhang, Xiao-Fang Tu, Ying-Shuo Zhang, Dan-Ye Zhu, Jian-Guo Zhang, Zhao-Jun Wei
The peony seed dreg polysaccharide (PSDPs) fractions and their modified derivatives were examined for their antibacterial potential. PSDPs along with their derivatives exhibited appreciable antibacterial activity against both Gram-positive (B. subtilis and S. aureus) as well as Gram-negative (E. coli and S. typhimurium) bacteria. Among the four polysaccharide fractions, HBSS possessed the greatest antibacterial activity with an inhibition zone of 13.6 mm against S. typhimurium, minimal inhibitory concentration of 0...
May 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29774370/il-33-s-st2-ratio-systemic-symptoms-and-basophil-activation-in-pru-p-3-sensitized-allergic-patients
#6
Carina G Uasuf, Caterina Di Sano, Sebastiano Gangemi, Giuseppe Albeggiani, Diego Cigna, Paola Dino, Ignazio Brusca, Mark Gjomarkaj, Elisabetta Pace
BACKGROUND: Although IL-33/ST2 axis is involved in the development of allergic diseases, its contribution in food allergy is still unknown. METHODS: In this study, we assessed the serum levels of IL-33 and its s-ST2 receptor in 53 control patients (without allergic diseases), 47 peach (Pru p 3)-sensitized allergic patients (SAP), and in 68 non-Pru p 3-SAP. Basophil activation test (BAT) was used to assess the basophil activation due to allergen exposure before and after the addition of s-ST2 to the blood samples from 5 Pru p 3-SAP...
May 17, 2018: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/29774148/genetic-variations-in-the-tlr3-locus-are-associated-with-eosinophilic-esophagitis
#7
Robledo Ávila-Castellano, José-Raúl García-Lozano, Stefan Cimbollek, Alfredo J Lucendo, Juan-Manuel Bozada, Joaquín Quiralte
Background: Eosinophilic esophagitis (EoE) is an antigen-driven disease mediated by an abnormal immune Th2 response. Objective: The objective of this article is to investigate genes associated with regulating immune responses leading to disease susceptibility. Methods: Twenty-seven tag single nucleotide polymorphisms (tSNPs) selected in five candidate genes ( TLR3, TLR4, FOXP3, FLG and TSLP ) were genotyped in 218 EoE patients and 376 controls...
April 2018: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29773706/correction-are-sweet-snacks-more-sensitive-to-price-increases-than-sugar-sweetened-beverages-analysis-of-british-food-purchase-data
#8
(no author information available yet)
No abstract text is available yet for this article.
May 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29773698/protocol-for-the-validation-of-sensitivity-and-specificity-of-the-cow-s-milk-related-symptom-score-comiss-against-open-food-challenge-in-a-single-blinded-prospective-multicentre-trial-in-infants
#9
Yvan Vandenplas, Rajat Mukherjee, Christophe Dupont, Philippe Eigenmann, Arne Høst, Mikael Kuitunen, Carmen Ribes-Koninkx, Neil Shah, Hania Szajewska, Andrea von Berg, Ralf G Heine, Zheng-Yan Zhao
INTRODUCTION: The symptoms of cow's milk protein allergy (CMPA) in infancy can be non-specific which may delay a correct diagnosis and cause adverse clinical outcomes. The diagnosis of non-IgE-mediated CMPA is particularly complex as it involves a 2 to 4 week elimination diet followed by oral food challenge (OFC). The Cow's Milk-related Symptom Score (CoMiSS) is a clinical resource for primary healthcare providers which aims to increase awareness of CMPA symptoms to facilitate an earlier diagnosis...
May 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29772884/validation-of-a-spatial-liver-fluke-model-under-field-conditions-in-ireland
#10
Amalia Naranjo Lucena, María Pía Munita Corbalán, Ana María Martínez-Ibeas, Guy McGrath, Riona Sayers, Grace Mulcahy, Annetta Zintl
Fasciola hepatica is the causative agent of fasciolosis, a global disease of a wide range of mammals, particularly sheep and cattle. Liver fluke infection causes annual losses estimated at around €2.5 billion to livestock and food industries worldwide. Various models have been developed to define risk factors and predict exposure to this liver fluke in ruminants in European countries, most of them based exclusively on data from dairy herds. The aim of this study was to validate a published theoretical baseline risk map of liver fluke exposure and cluster maps in Ireland, by including further explanatory variables and additional herd types that are spatially more widespread...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772227/evolutionary-shift-towards-lateral-line-dependent-prey-capture-behavior-in-the-blind-mexican-cavefish
#11
Evan Lloyd, Courtney Olive, Bethany A Stahl, James B Jaggard, Paloma Amaral, Erik R Duboue, Alex C Keene
Feeding strategies are dependent on multi-modal sensory processing, that integrates visual, chemosensory, and mechanoreceptive cues. In many fish species, local environments and food availability dramatically influence the evolution of sensory and morphological traits that underlie feeding. The Mexican cavefish, Astyanax mexicanus, have developed robust changes in sensory-dependent behaviors, but the impact on prey detection and feeding behavior is not known. In the absence of eyes, cavefish have evolved enhanced sensitivity of the lateral line, comprised of mechanosensory organs that sense water flow and detect prey...
May 14, 2018: Developmental Biology
https://www.readbyqxmd.com/read/29770924/roux-en-y-gastric-bypass-surgery-induced-weight-loss-and-metabolic-improvements-are-similar-in-tgr5-deficient-and-wildtype-mice
#12
Zheng Hao, R Leigh Townsend, Michael B Mumphrey, Thomas W Gettys, Sangho Yu, Heike Münzberg, Christopher D Morrison, Hans-Rudolf Berthoud
BACKGROUND AND PURPOSE: Roux-en-Y gastric bypass surgery (RYGB) remains one of the most effective treatments for obesity and type 2 diabetes. Despite this, the mechanisms through which it acts are still not well understood. Bile acid signaling through the transmembrane G-protein-coupled receptor TGR5 has been shown to have significant effects on metabolism and has recently been reported to be necessary for the full effects of vertical sleeve gastrectomy (VSG), a bariatric surgery with similar effects to RYGB...
May 16, 2018: Obesity Surgery
https://www.readbyqxmd.com/read/29770654/-preparation-of-freeze-drying-control-materials-of-igg-antibody-against-schistosoma-japonicum-for-immunodetection-kits
#13
Huang Jin, Tang Chun-Lian, Tu Zu-Wu, Tang Li, Zhang Ke-Hui, Li Qian, Ye Jun
OBJECTIVE: To prepare freeze-drying control materials of IgG antibody against Schistosoma japonicum for detection kits. METHODS: The serum samples of schistosomiasis patients from endemic areas and normal people without history of schistosome infection or contact with infested water in Hubei Province were collected. All the sera were detected by the method approved by China Food and Drug Administration and selected for preparation of quality control samples. RESULTS: Totally twelve positive quality control materials, ten negative quality control materials, and one sensitive and one precision quality control materials were screened...
April 18, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29769498/quantitative-analysis-of-nucleic-acid-extraction-methods-for-vibrio-cholerae-using-real-time-pcr-and-conventional-pcr
#14
Z Z Hossain, J Ferdous, S M Tulsiani, P M Jensen, A Begum
The devastating diarrheal disease cholera is caused by the bacterium Vibrio cholerae. Nucleic acid extraction is the primary step for several molecular detection approaches. In order to identify the sources of cholera illness, an efficient, fast and easy DNA extraction method for toxigenic Vibrio cholerae is desired which can be applied on diverse type of samples. This methodology developmental setup study was performed in the Environmental Microbiology Lab, Department of Microbiology, University of Dhaka, Bangladesh from March 2015 to May 2015 attempted to compare three DNA extraction methods for efficient detection and quantification of Vibrio cholerae...
April 2018: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/29769473/-a-case-of-oral-mite-anphylaxis-in-which-basophil-activation-test-was-useful-for-diagnosis
#15
Shintaro Kamizono, Tamotsu Fujimoto
We treated a 13-year-old girl who developed dyspnea after ingestion of okonomiyaki, a Japanese savory pancake prepared from takoyaki flour mix that was opened several months ago and had been stored at ambient temperature. She was found to be sensitized to mite antigen, and microscopic examination of the flour specimen revealed contamination with mites. Therefore, she was diagnosed with oral mite anaphylaxis (OMA). For a more definitive diagnosis, we performed the basophil activation test (BAT) not only in this patient but also in a healthy woman who was not sensitized to mite (control), using the mite-contaminated flour and unopened takoyaki flour mix as antigens...
2018: Arerugī, [Allergy]
https://www.readbyqxmd.com/read/29769472/-evaluation-of-the-effectiveness-of-subcutaneous-immunotherapy-using-birch-pollen-extract-for-pollen-food-allergy-syndrome
#16
Shuntaro Tsumagari, Satomi Mori, Hiroko Ishizu, Yutaka Tanaka, Yoshihisa Okamoto, Kazuyuki Kurihara
BACKGROUNDS: Recently, patients with oral allergy syndrome (OAS) to fruits or vegetables caused by pollenfood allergy syndrome (PFAS) have increased nationwide. We examined effectiveness of SCIT using birch pollen extract for PFAS. METHODS: A total of 19 patients (9 male and 10 female) underwent SCIT with birch pollen extract from August 2011 to August 2016. Rush schedule was used for the initial updosing for SCIT in a hospital setting. In maintenance phase, SCIT was administered every 4-8 weeks on an outpatient basis...
2018: Arerugī, [Allergy]
https://www.readbyqxmd.com/read/29769465/effects-of-oral-calcium-dosage-and-timing-on-ethanol-induced-sensitization-of-locomotion-in-dba-2-mice
#17
Chikako Shimizu, Yutaka Mitani, Youichi Tsuchiya, Toshitaka Nabeshima
Ethanol (EtOH) dosage, frequency, and paired associative learning affect the risk of alcoholism. Recently, Spanagel et al. reported that acamprosate calcium (Acam Ca) prescribed for alcoholism exerts an anti-relapse effect via Ca. Ca is contained in foods, sometimes consumed with alcohol. Therefore, we investigated the association among oral Ca ingestion, EtOH-induced locomotor sensitization, and plasma Ca levels on how to consume Ca for moderate drinking. We used DBA/2 CrSlc mice, and CaCl2 as water-soluble Ca salts...
May 16, 2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29768483/transport-of-enniatin-b-and-enniatin-b1-across-the-blood-brain-barrier-and-hints-for-neurotoxic-effects-in-cerebral-cells
#18
Isabel Krug, Matthias Behrens, Melanie Esselen, Hans-Ulrich Humpf
Enniatins are common contaminants of food and feed and belong to the group of the "emerging" mycotoxins, which are produced by various Fusarium species. Although a wide range of toxic effects, like antibacterial, antifungal, insecticidal and cytotoxic properties, have been described in vitro, so far, no cases of mycotoxicosis connected to enniatins in vivo are reported. Among this group of mycotoxins, enniatin B and enniatin B1 are the most prevalent compounds and therefore are present in the human diet...
2018: PloS One
https://www.readbyqxmd.com/read/29768297/pediatric-esophageal-foreign-body-possible-role-for-digital-tomosynthesis
#19
Andrew Johansen, Gregory P Conners, Jacob Lee, Amie L Robinson, William L Chew, Sherwin S Chan
OBJECTIVES: Foreign body (FB) ingestion is a common reason for emergency department visits, affecting more than 80,000 children in the United States annually. Whereas most ingested FBs are coins or other radiopaque objects, some are radiolucent FBs such as food. Digital tomosynthesis (DTS) is a radiographic technique that produces cross-sectional images with in-plane resolution similar to that of traditional radiographs. Our pilot study evaluated the sensitivity and specificity of DTS to detect FB in comparison to esophagram and clinical impression...
May 15, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29767673/modeling-the-impact-of-folic-acid-fortification-and-supplementation-on-red-blood-cell-folate-concentrations-and-predicted-neural-tube-defect-risk-in-the-united-states-have-we-reached-optimal-prevention
#20
Krista S Crider, Yan Ping Qi, Owen Devine, Sarah C Tinker, Robert J Berry
Background: The US CDC and the Institute of Medicine recommend that women capable of becoming pregnant consume ≥400 µg synthetic folic acid/d to prevent neural tube defects (NTDs). The United States has 3 sources of folic acid: fortified enriched cereal grain products (ECGPs), fortified ready-to-eat (RTE) cereals, and dietary supplements. Objective: Our objectives were as follows: 1) to estimate the usual daily folic acid intake and distributions of red blood cell (RBC) folate concentrations among women consuming folic acid from different sources; 2) to assess the usual daily total folic acid intake associated with optimal RBC folate concentrations for NTD prevention; 3) to predict NTD prevalence; and 4) to estimate the number of preventable folate-sensitive NTDs...
May 14, 2018: American Journal of Clinical Nutrition
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