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https://www.readbyqxmd.com/read/28528254/quantitative-determination-of-auramine-o-by-terahertz-spectroscopy-with-2dcos-plsr%C3%A2-model
#1
Huo Zhang, Zhi Li, Tao Chen, Binyi Qin
Residues of harmful dyes such as Auramine O (AO) in herb and food products threaten the health of people. So, fast and sensitive detection techniques of the residues are needed. As a powerful tool for substance detection, terahertz (THz) spectroscopy was used for the quantitative determination of AO by combining with an improved partial least-squares regression (PLSR) model in this paper. Absorbance of herbal samples with different concentrations was obtained by THz-TDS in the band between 0.2THz and 1.6THz...
May 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28527633/anthelmintic-activity-of-cytochrome-p450-inhibitors-miconazole-and-clotrimazole-in-vitro-effect-on-the-liver-fluke-opisthorchis-felineus
#2
Viatcheslav A Mordvinov, Alexander G Shilov, Maria Y Pakharukova
Discovery of drugs for the treatment of opisthorchiasis and schistosomiasis is a high priority. The basic metabolic cytochrome P450 (CYP) system in parasitic flatworms contains a single gene. CYP of the liver fluke Opisthorchis felineus, the causative agent of opisthorchiasis, is important for survival of the worm, so may be a promising target for therapeutics against liver fluke infection. The aims of this study were: (i) to analyse in-vitro anthelmintic activity of various CYP inhibitors using standard motility and mortality assays against juvenile and adult O...
May 17, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28527399/the-effects-of-melamine-with-or-without-cyanuric-acid-on-immune-function-in-ovalbumin-sensitized-mice
#3
Rong H Yin, Qiao Dong, Hua S Li, Jing Yuan, Xi T Li, Rong L Yin, Wen Li, Wen C Wang, Bao S Liu, Xiao H Han, Ren F Wang, Xin Wang, Wen L Bai
Melamine is commonly used in the chemical industry, and it has been found to exist on food processing equipment and utensils. Previous investigations suggested that melamine alone or its combination with cyanuric acid appears to be toxic to immune system in animals. The objective of this study is to investigate the potential effects of melamine with or without cyanuric acid on immune function in ovalbumin- sensitized mice. Our data indicated that melamine-related administration caused a significant decreasing in the content of IL-4 in mice in comparison to negative control group...
May 13, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28526589/a-rapid-salmonella-detection-method-involving-thermophilic-helicase-dependent-amplification-and-a-lateral-flow-assay
#4
Xin-Jun Du, Tian-Jiao Zhou, Ping Li, Shuo Wang
Salmonella is a major foodborne pathogen that is widespread in the environment and can cause serious human and animal disease. Since conventional culture methods to detect Salmonella are time-consuming and laborious, rapid and accurate techniques to detect this pathogen are critically important for food safety and diagnosing foodborne illness. In this study, we developed a rapid, simple and portable Salmonella detection strategy that combines thermophilic helicase-dependent amplification (tHDA) with a lateral flow assay to provide a detection result based on visual signals within 90 min...
May 16, 2017: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/28526380/comparison-between-two-assessment-tools-for-fruit-and-vegetable-intake-relative-to-the-24-h-recall
#5
Mariana Souza Lopes, Luana Caroline Dos Santos, Aline Cristine Souza Lopes, Mery Natali Silva Abreu
OBJECTIVE: The aim of this study was to evaluate the validity of methods assessing fruit and vegetable (FV) intake among Brazilian users of the Primary Attention Health Care Program. METHODS: The present study included 299 participants (age ≥20 y) from a representative sample from a randomized controlled community trial performed as part of a health promotion program in a Brazilian metropolis. All participants completed three methods for the assessment of FV consumption: brief questionnaire of FV (QBrief-FV), food frequency questionnaire of FV, and a 24-h dietary recall...
June 2017: Nutrition
https://www.readbyqxmd.com/read/28524600/validation-of-smartpill-%C3%A2-wireless-motility-capsule-for-gastrointestinal-transit-time-intra-subject-variability-software-accuracy-and-comparison-with-video-capsule-endoscopy
#6
H O Diaz Tartera, D-L Webb, A Kh Al-Saffar, M A Halim, G Lindberg, P Sangfelt, P M Hellström
BACKGROUND: There is interest in ultimately combining endoscopy and motility assessments. Gastric emptying (GET), small bowel (SBTT), colon (CTT) and whole gut transit (WGTT) times are conveniently obtained by SmartPill(®) wireless motility capsule (WMC) that records luminal pH, temperature and pressure. Reproducibility within same subjects and accuracy of software derived times (MotiliGI(®) ) were investigated for diagnostic application. GET and SBTT were separately measured using video capsule endoscopy (VCE)...
May 19, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28524003/targeting-the-programmed-cell-death-1-pathway-in-genitourinary-tumors-current-progress-and-future-perspectives
#7
Rodolfo Montironi, Liang Cheng, Holger Moch, Antonio Lopez-Beltran, Marina Scarpelli, Francesco Massari, Michelangelo Fiorentino, Chiara Ciccarese, Michael Koch, Hristos Z Kaimakliotis, Lisha Wang, Roberto Pili, Steven A Mann
Immune checkpoint inhibitors have revolutionized the treatment many malignancies with over a dozen new United States Food and Drug Administration (FDA) approvals in the past six years. Due to the combination of potent treatment success and potentially deadly adverse effects from immune checkpoint inhibitors, gathering prognostic and predictive information about FDA-indicated tumors is prudent. PD-L1 expression is a poor prognostic factor and predictive of better responses from both PD-1 and PD-L1 inhibitors in a variety of tumor types including RCC and urothelial carcinoma...
May 18, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28522975/hypoxia-and-inactivity-related-physiological-changes-constipation-inflammation-are-not-reflected-at-the-level-of-gut-metabolites-and-butyrate-producing-microbial-community-the-planhab-study
#8
Robert Šket, Nicole Treichel, Tadej Debevec, Ola Eiken, Igor Mekjavic, Michael Schloter, Marius Vital, Jenna Chandler, James M Tiedje, Boštjan Murovec, Zala Prevoršek, Blaž Stres
We explored the assembly of intestinal microbiota in healthy male participants during the run-in (5 day) and experimental phases [21-day normoxic bed rest (NBR), hypoxic bedrest (HBR)], and hypoxic ambulation (HAmb) in a strictly controlled laboratory environment, balanced fluid, and dietary intakes, controlled circadian rhythm, microbial ambiental burden, and 24/7 medical surveillance. The fraction of inspired O2 (FiO2) and partial pressure of inspired O2 (PiO2) were 0.209 and 133.1 ± 0.3 mmHg for NBR and 0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28522335/comparative-analysis-of-transcriptomic-responses-to-repeated-dose-exposure-to-2-mcpd-and-3-mcpd-in-rat-kidney-liver-and-testis
#9
Thorsten Buhrke, Katharina Schultrich, Albert Braeuning, Alfonso Lampen
3-Chloro-1,2-propanediol (3-MCPD) and its isomer 2-chloro-1,3-propanediol (2-MCPD) are heat-induced food contaminants present in oil- and fat-containing foodstuff. Kidney and testes are among the main target organs of 3-MCPD. Almost no data on 2-MCPD toxicity are available. Here, transcriptomic responses following repeated-dose exposure of rats to non-toxic doses of 10 mg/kg body weight 2-MCPD or 3-MCPD for 28 days were characterized by microarray analysis of kidney, liver, and testes. 3-MCPD exerted more pronounced effects than 2-MCPD in all organs...
May 15, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28521794/in-vitro-synthesis-of-9-10-dihydroxyhexadecanoic-acid-using-recombinant-escherichia-coli
#10
Anees Kaprakkaden, Preeti Srivastava, Virendra Swarup Bisaria
BACKGROUND: Hydroxy fatty acids are widely used in food, chemical and cosmetic industries. A variety of dihydroxy fatty acids have been synthesized so far; however, no studies have been done on the synthesis of 9,10-dihydroxyhexadecanoic acid. In the present study recombinant E. coli has been used for the heterologous expression of fatty acid hydroxylating enzymes and the whole cell lysate of the induced culture was used for in vitro production of 9,10-dihydroxyhexadecanoic acid. RESULTS: A first of its kind proof of principle has been successfully demonstrated for the production of 9,10-dihydroxyhexadecanoic acid using three different enzymes viz...
May 18, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28521681/effects-of-diets-on-adipose-tissue
#11
Silvia Ezquerro, Amaia Rodríguez, Piero Portincasa, Gema Frühbeck
Obesity is a major health problem that has become a global epidemic. Overweight and obesity are commonly associated with the development of several pathologies, such as insulin resistance, cardiovascular diseases, sleep apnea and several types of cancer, which can lead to further morbidity and mortality. An increased abdominal adiposity renders overweight and obese individuals more prone to metabolic and cardiovascular problems. In this sense, excess adiposity leads to several changes in the biology, morphology and function of the adipose tissue, such as adipocyte hypertrophy and hyperplasia, adipose tissue inflammation and fibrosis and an impaired secretion of adipokines, contributing to the onset of obesity-related co-morbidities...
May 17, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28521663/towards-a-generic-procedure-for-the-detection-of-relevant-contaminants-from-waste-electric-and-electronic-equipment-weee-in-plastic-food-contact-materials-review-and-selection-of-key-parameters
#12
Franky Puype, Jiří Samsonek, Věra Vilímková, Šárka Kopečková, Andrea Ratiborská, Jan Knoop, Marion Egelkraut-Holtus, Markus Ortlieb, Uwe Oppermann
Recently, traces of brominated flame retardants (BFRs) have been detected in black plastic food contact materials (FCMs) indicating the presence of recycled plastics, mainly coming from waste electric and electronic equipment (WEEE) as BFRs are one of the main additives in electric applications. In order to evaluate efficiently and preliminary in situ the presence of WEEE in plastic FCMs, a generic procedure for evaluation of WEEE presence in plastic FCMs by using defined parameters having each an associated importance level has been proposed...
May 18, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28521274/detection-of-regulated-herbs-and-plants-in-plant-food-supplements-and-traditional-medicines-using-infrared-spectroscopy
#13
E Deconinck, C A Sokeng Djiogo, J L Bothy, P Courselle
The identification of a specific toxic or regulated plant in herbal preparations or plant food supplements is a real challenge, since they are often powdered, mixed with other herbal or synthetic powders and compressed into tablets or capsules. The classical identification approaches based on micro- and macroscopy are therefore not possible anymore. In this paper infrared spectroscopy, combined with attenuated total reflectance was evaluated for the screening of plant based preparations for nine specific plants (five regulated and four common plants for herbal supplements)...
May 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28518086/ptr-tof-ms-coupled-with-an-automated-sampling-system-and-tailored-data-analysis-for-food-studies-bioprocess-monitoring-screening-and-nose-space-analysis
#14
Vittorio Capozzi, Sine Yener, Iuliia Khomenko, Brian Farneti, Luca Cappellin, Flavia Gasperi, Matteo Scampicchio, Franco Biasioli
Proton Transfer Reaction (PTR), combined with a Time-of-Flight (ToF) Mass Spectrometer (MS) is an analytical approach based on chemical ionization that belongs to the Direct-Injection Mass Spectrometric (DIMS) technologies. These techniques allow the rapid determination of volatile organic compounds (VOCs), assuring high sensitivity and accuracy. In general, PTR-MS requires neither sample preparation nor sample destruction, allowing real time and non-invasive analysis of samples. PTR-MS are exploited in many fields, from environmental and atmospheric chemistry to medical and biological sciences...
May 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28515886/aquatic-microfauna-alter-larval-food-resources-and-affect-development-and-biomass-of-west-nile-and-saint-louis-encephalitis-vector-culex-nigripalpus-diptera-culicidae
#15
Dagne Duguma, Michael G Kaufman, Arthur B Simas Domingos
Ciliate protists and rotifers are ubiquitous in aquatic habitats and can comprise a significant portion of the microbial food resources available to larval mosquitoes, often showing substantial declines in abundance in the presence of mosquito larvae. This top-down regulation of protists is reported to be strong for mosquitoes inhabiting small aquatic containers such as pitcher plants or tree holes, but the nature of these interactions with larval mosquitoes developing in other aquatic habitats is poorly understood...
May 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28515571/estimating-yield-gaps-at-the-cropping-system-level
#16
Nicolas Guilpart, Patricio Grassini, Victor O Sadras, Jagadish Timsina, Kenneth G Cassman
Yield gap analyses of individual crops have been used to estimate opportunities for increasing crop production at local to global scales, thus providing information crucial to food security. However, increases in crop production can also be achieved by improving cropping system yield through modification of spatial and temporal arrangement of individual crops. In this paper we define the cropping system yield potential as the output from the combination of crops that gives the highest energy yield per unit of land and time, and the cropping system yield gap as the difference between actual energy yield of an existing cropping system and the cropping system yield potential...
May 2017: Field Crops Research
https://www.readbyqxmd.com/read/28515160/replacement-of-refined-starches-and-added-sugars-with-egg-protein-and-unsaturated-fats-increases-insulin-sensitivity-and-lowers-triglycerides-in-overweight-or-obese-adults-with-elevated-triglycerides
#17
Kevin C Maki, Orsolya M Palacios, Emily Lindner, Kristin M Nieman, Marjorie Bell, Jennifer Sorce
Background: Hypertriglyceridemia is a common condition in the United States and is often associated with other metabolic disturbances, including insulin resistance, metabolic syndrome, and a predominance of small dense LDL particles.Objective: The objective of this trial was to evaluate the effects of a combination of egg protein (Epro) and unsaturated fatty acids (UFAs) substituted for refined starches and added sugars on insulin sensitivity (primary outcome) and other cardiometabolic health markers in overweight or obese adults with elevated triglyceride (TG) concentrations...
May 17, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28514823/-fulminant-course-of-a-clostridium-perfringens-infection-with-pathognomonic-ct-finding
#18
Christoph Alexander Stückle, Christopher Sonntag, Magdalena Kulik, Thorsten Nitschke
History and clinical findings A 74-year old woman was accepted by the emergency room with severe chest and abdominal pain. She complained about regurgitation after ingestion of food followed by sharp pain in her breast. Investigations A first examination of the patient showed a tachypnoea und tachycardia up to 122 beats per minute, the body temperature measured on admission was 38.7 °C. Due to hemolysis only a few of the requested parameters could be evaluated. CRP was increased with 8.32 mg/dl. The hemoglobin dropped from 12...
May 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28514432/the-perception-of-strigolactones-in-vascular-plants
#19
REVIEW
Shelley Lumba, Duncan Holbrook-Smith, Peter McCourt
Small-molecule hormones play central roles in plant development, ranging from cellular differentiation and organ formation to developmental response instruction in changing environments. A recently discovered collection of related small molecules collectively called strigolactones are of particular interest, as these hormones also function as ecological communicators between plants and fungi and between parasitic plants and their hosts. Advances from model plant systems have begun to unravel how, as a hormone, strigolactone is perceived and transduced...
May 17, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28514302/safety-and-efficacy-evaluation-of-pertuzumab-in-patients-with-solid-tumors
#20
Chenjing Zhu, Wenwu Ling, Jing Zhang, Hui Gao, Kai Shen, Xuelei Ma
BACKGROUND: The development of targeted therapies benefits patients with certain markers in the treatment of breast cancer. Pertuzumab is a novel humanized monoclonal antibody that blocks human epidermal growth factor receptor 2 (HER2) dimerization. The Food and Drug Administration has approved pertuzumab in combination with trastuzumab and docetaxel for the treatment of patients with HER2-positive metastatic breast cancer. METHODS: To assess the safety and efficacy profile of pertuzumab, we searched PubMed and Embase (articles from January 1966 to January 2015) using the keyword "pertuzumab"...
May 2017: Medicine (Baltimore)
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