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https://www.readbyqxmd.com/read/29786845/a-simple-and-portable-screening-method-for-adulterated-olive-oils-using-the-hand-held-ftir-spectrometer-and-chemometrics-tools
#1
Meng Pan, Suqin Sun, Qun Zhou, Jianbo Chen
Extra virgin olive oil has been one of the most common targets for economically motivated food adulteration. This research employed the hand-held FTIR spectrometer to develop the simple and portable screening methods for extra virgin olive oils adulterated with other cheaper vegetable oils. With the help of the ATR probe and chemometrics tools, oil samples can be measured directly without any pretreatment, then the spectra can be interpreted automatically to determine the possibility of adulteration and estimate the content of adulterant oil...
May 22, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29785859/apposition-and-positioning-of-the-nellix-endovascular-aneurysm-sealing-system-in-the-infrarenal-aortic-neck
#2
Kim van Noort, Simon P Overeem, Ruben van Veen, Jan M M Heyligers, Michel M P J Reijnen, Richte C L Schuurmann, Cornelis H Slump, Rogier Kropman, Jean-Paul P M de Vries
PURPOSE: To investigate the initial proximal position and seal of the Nellix EndoVascular Aneurysm Sealing (EVAS) system in the aortic neck using a novel methodology. METHODS: Forty-six consecutive patients who underwent elective EVAS for an abdominal aortic aneurysm were retrospectively selected and dichotomized into an early (n = 23) and a late (n = 23) group. The aortic neck morphology and aortic neck surface (ANS) were determined on preoperative computed tomography (CT) scans; the endograft position and nonapposition surface (NAS) were determined on the 1-month CT scans...
May 1, 2018: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/29785001/evaluation-of-weed-control-efficacy-and-crop-safety-of-the-new-hppd-inhibiting-herbicide-qyr301
#3
Hengzhi Wang, Weitang Liu, Kongping Zhao, Hui Yu, Jia Zhang, Jinxin Wang
QYR301, 1,3-Dimethyl-1H-pyrazole-4-carboxylic acid 4-[2-chloro-3-(3,5-dimethyl-pyrazol-1-ylmethyl)-4-methanesulfonyl-benzoyl]-2,5-dimethyl-2H-pyrazol-3-yl ester, is a novel HPPD-inhibiting herbicide and was evaluated to provide a reference for post-emergence (POST) application under greenhouse and field conditions. The crop safety (180 and 360 g active ingredient (a.i.) ha-1 treatments) experiment revealed that wheat, paddy, garlic and corn were the only four crops without injury at both examined herbicide rates...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29784365/rapid-detection-of-four-mycotoxins-in-corn-using-a-microfluidics-and-microarray-based-immunoassay-system
#4
Yiqi Chen, Xiangrui Meng, Yunzeng Zhu, Minjie Shen, Ying Lu, Jing Cheng, Youchun Xu
Mycotoxins threaten human health seriously because they usually exist in food, fodder and commodities. In this study, a rapid and sensitive immunoassay system for commonly encountered mycotoxins was established based on microfluidics and protein microarrays. Four mycotoxins (T-2 toxin, aflatoxin B1, ochratoxin A, and zearalenone) can be automatically detected in a custom-made microdevice within 30 min under the assistance of a prototype of the instrument with a fluid control system and an imaging system. Once the microdevices are fabricated, they are small-sized and user-friendly...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29784363/a-colorimetric-immunoassay-based-on-glucose-oxidase-induced-aunp-aggregation-for-the-detection-of-fumonisin-b-1
#5
Xirui Chen, Yi Liang, Wenjing Zhang, Yuankui Leng, Yonghua Xiong
Naked-eye readout colorimetric signal-based assays are promising for high-throughput screening detection and point-of-care diagnostics in resource-constrained regions. Here, a novel direct competitive plasmonic enzyme-linked immunosorbent assay (dc-pELISA) based on gold nanoparticle (AuNP) aggregation with highly sensitive and robust naked-eye readout signal was developed and used to detect fumonisin B1 (FB1 ). AuNP aggregation was induced by a horseradish peroxidase (HRP)/hydrogen peroxide (H2 O2 )/tyramine (TYR) system, resulting in a dramatic color change from red to blue...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29782145/stackable-lab-on-paper-device-with-all-in-one-au-electrode-for-high-efficiency-photoelectrochemical-cyto-sensing
#6
Hongmei Yang, Yan Zhang, Lina Zhang, Kang Cui, Shenguang Ge, Jiadong Huang, Jinghua Yu
Highly conductive, robust, and multifunctional integrated paper-supported electrodes are requisite to fulfill the promise of paper-based analytical application. Herein, an all-in-one Au electrode comprising of detection zone, waterproof electronic bridge, and signal output contactor was engineered via combining the double-sided growth method with the secondary wax-printing. Benefiting from the strongly omnidirectional conductivity and desirably mechanical robustness of the as-prepared electrode, a stackable lab-on-paper cyto-device integrated with high-efficiency photoelectrochemical strategy was developed for the MCF-7 cells assay...
May 21, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29782042/effect-of-tongue-palate-contact-mode-on-food-transport-during-mastication
#7
Tomoko Iizumi, Mariko Yoshino, Hitoshi Kagaya, Kazuhiro Hori, Takahiro Ono
The physiological mechanisms underlying Stage II transport (STII), during which comminuted solid food is transported from the oral cavity into the meso-pharynx for aggregation into a pre-swallow bolus, have yet to be clarified. The purpose of the present study was to investigate relationships between tongue-palate contact during mastication and incidence of STII by synchronized analysis of tongue pressure production on a hard palate and video-endoscopic (VE) images during mastication. Tongue pressure at 5 measuring points with an ultra-thin sensor sheet attached to the hard palate and trans-nasal VE images while masticating corned beef was recorded for 12 healthy subjects...
May 21, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29781773/a-comparison-of-total-inward-leakage-measured-using-sodium-chloride-nacl-and-corn-oil-aerosol-methods-for-air-purifying-respirators
#8
Samy Rengasamy, Ziqing Zhuang, George Niezgoda, Gary Walbert, Robert Lawrence, Brenda Boutin, Judith Hudnall, William P Monaghan, Michael Bergman, Colleen Miller, James Harris, Christopher Coffey
The International Organization for Standardization (ISO) standard 16900-1:2014 specifies the use of sodium chloride (NaCl) and corn oil aerosols, and sulfur hexafluoride gas for measuring total inward leakage (TIL). However, a comparison of TIL between different agents is lacking. The objective of this study was to measure and compare TIL for respirators using corn oil and NaCl aerosols. TIL was measured with 10 subjects donning two models of filtering facepiece respirators (FFRs) including FFP1, N95, P100, and elastomeric half-mask respirators (ERs) in NaCl and corn oil aerosol test chambers, using continuous sampling methods...
May 21, 2018: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/29781525/effect-of-deploying-trained-community-based-reproductive-health-nurses-corn-on-long-acting-reversible-contraception-larc-use-in-rural-ethiopia-a-cluster-randomized-community-trial
#9
Taddese Alemu Zerfu, Henok Taddese Ayele, Tariku Nigatu Bogale
To investigate the effect of innovative means to distribute LARC on contraceptive use, we implemented a three arm, parallel groups, cluster randomized community trial design. The intervention consisted of placing trained community-based reproductive health nurses (CORN) within health centers or health posts. The nurses provided counseling to encourage women to use LARC and distributed all contraceptive methods. A total of 282 villages were randomly selected and assigned to a control arm (n = 94) or 1 of 2 treatment arms (n = 94 each)...
May 21, 2018: Studies in Family Planning
https://www.readbyqxmd.com/read/29780153/food-specific-iggs-are-highly-increased-in-the-sera-of-patients-with-inflammatory-bowel-disease-and-are-clinically-relevant-to-the-pathogenesis
#10
Nanping Xiao, Fenghua Liu, Guangxi Zhou, Mingming Sun, Fengfu Ai, Zhanju Liu
Objective Dietary antigens are common luminal antigens in the gastrointestinal tract and have been considered to contribute to the pathogenesis of inflammatory bowel disease (IBD). We analyzed the levels of food-specific IgGs against a variety of dietary antigens, explored the clinical relevance of food allergy to the pathogenesis of IBD, and investigated whether or not infliximab (IFX) treatment could regulate the immune responses induced by dietary antigens. Methods A total of 301 IBD patients, including 201 patients with Crohn's disease (CD) and 100 patients with ulcerative colitis (UC), were recruited, and their serum food-specific IgGs against 14 food antigens were detected by a semi-quantitative enzyme linked immunosorbent assay (ELISA)...
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29779800/treatment-strategies-and-survival-outcomes-in-older-women-with-breast-cancer-a-comparative-study-between-the-focus-cohort-and-nottingham-cohort
#11
Hugo Schuil, Marloes Derks, Gerrit-Jan Liefers, Johanneke Portielje, Cornelis van de Velde, Binafsha Syed, Andrew Green, Ian Ellis, Kwok-Leung Cheung, Esther Bastiaannet
OBJECTIVE: Clinical trials investigating breast cancer treatment often exclude or misrepresent older adults. This study compares treatment patterns and survival of older women diagnosed with breast cancer between a Dutch and a British observational cohort. MATERIALS AND METHODS: Women aged 70 years and older diagnosed with breast cancer after 1990 with a T0-T2 tumor stage and no evidence of metastatic disease were included from a population-based cohort in the Netherlands and a British hospital-based cohort in Nottingham...
May 18, 2018: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/29778475/performance-nutritional-behavior-and-metabolic-responses-of-calves-supplemented-with-forage-depend-on-starch-fermentability
#12
S Mojahedi, M Khorvash, G R Ghorbani, E Ghasemi, M Mirzaei, F Hashemzadeh-Cigari
This study evaluated the interactive effects of forage provision on performance, nutritional behavior, apparent digestibility, rumen fermentation, and blood metabolites of dairy calves when corn grains with different fermentability were used. Sixty 3-d-old Holstein calves were randomly assigned to 1 of 4 treatments in a 2 × 2 factorial arrangement. Dietary treatments were (1) steam-flaked (SF) corn without alfalfa hay (AH) supplementation (SF-NO), (2) SF corn with AH supplementation (SF-AH), (3) cracked (CR) corn without AH supplementation (CR-NO), and (4) CR corn with AH supplementation (CR-AH)...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29777111/knockdown-of-rna-interference-pathway-genes-impacts-the-fitness-of-western-corn-rootworm
#13
Courtney Davis-Vogel, Angel Ortiz, Lisa Procyk, Jonathan Robeson, Adane Kassa, Yiwei Wang, Emily Huang, Carl Walker, Amit Sethi, Mark E Nelson, Dipali G Sashital
Western corn rootworm (Diabrotica virgifera virgifera) is a serious agricultural pest known for its high adaptability to various management strategies, giving rise to a continual need for new control options. Transgenic maize expressing insecticidal RNAs represents a novel mode of action for rootworm management that is dependent on the RNA interference (RNAi) pathways of the insect for efficacy. Preliminary evidence suggests that western corn rootworm could develop broad resistance to all insecticidal RNAs through changes in RNAi pathway genes; however, the likelihood of field-evolved resistance occurring through this mechanism remains unclear...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29775722/inflammatory-and-oxidative-mechanisms-potentiate-bifenthrin-induced-neurological-alterations-and-anxiety-like-behavior-in-adult-rats
#14
Brahim Gargouri, Harsharan S Bhatia, Michèle Bouchard, Bernd L Fiebich, Hamadi Fetoui
Bifenthrin (BF) is a synthetic pyrethroid pesticide widely used in several countries to manage insect pests on diverse agricultural crops. Growing evidence indicates that BF exposure is associated with an increased risk of developing neurodegenerative disorders. However, the mechanisms by which BF induces neurological and anxiety alterations in the frontal cortex and striatum are not well known. The present in vivo study was carried out to determine whether reactive oxygen species (ROS)-mediated oxidative stress (OS) and neuroinflammation are involved in such alterations...
May 15, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29775707/in-vitro-digestibility-of-normal-and-waxy-corn-starch-is-modified-by-the-addition-of-tween-80
#15
E J Vernon-Carter, J Alvarez-Ramirez, L A Bello-Perez, A Garcia-Hernandez, C Roldan-Cruz, S Garcia-Diaz
Aqueous dispersions of normal and waxy corn starch (3% w/w) were mixed with Tween 80 (0, 7.5, 15, 22.5 and 30 g/100 g of starch), and gelatinized (90 °C, 20 min). Optical microscopy of the gelatinized starch dispersions (GSDx ; x = Tween 80 concentration) revealed that the microstructure was characterized by a continuous phase of leached amylose and amylopectin entangled chains, and a dispersed phase of insoluble remnants, called ghosts, on whose surface small granules were observed, imputed to Tween 80...
May 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29774514/summary-of-historical-terrestrial-toxicity-data-for-the-brominated-flame-retardant-tetrabromobisphenol-a-tbbpa-effects-on-soil-microorganisms-earthworms-and-seedling-emergence
#16
Klaus P Rothenbacher, Alison M Pecquet
This article summarizes historical and recent research on the terrestrial toxicology of tetrabromobisphenol A (TBBPA). Despite its ubiquitous use and presence in the environment, little published data is available to evaluate the terrestrial ecotoxicity of TBBPA. The purposes of this paper are to enable broad access to a series of TBBPA ecotoxicity tests (nitrogen transformation, earthworm survival/reproduction, and seedling emergence/growth) that were conducted in support of regulatory risk assessments, and to summarize available research in the terrestrial toxicity of TBBPA...
May 17, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29774508/the-bacterial-and-archaeal-community-structures-and-methanogenic-potential-of-the-cecal-microbiota-of-goats-fed-with-hay-and-high-grain-diets
#17
Wei Jin, Yin Li, Yanfen Cheng, Shengyong Mao, Weiyun Zhu
The cecum plays an important role in the feed fermentation of ruminants. However, information is very limited regarding the cecal microbiota and their methane production. In the present study, the cecal content from twelve local Chinese goats, fed with either a hay diet (0% grain) or a high-grain diet (71.5% grain), were used to investigate the bacterial and archaeal community and their methanogenic potential. Microbial community analysis was determined using high-throughput sequencing of 16S rRNA genes and real-time PCR, and the methanogenesis potential was assessed by in vitro fermentation with ground corn or hay as substrates...
May 17, 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29774145/evaluation-of-attenuative-effect-of-tert-butylhydroquinone-against-diazinon-induced-oxidative-stress-on-hematological-indices-in-male-wistar-rats
#18
Saman Sargazi, Hamidreza Galavi, Sadegh Zarei
Diazinon is an organophosphate toxicant that has been identified to induce oxidative stress within biological systems through altering biochemical and hematological indices, by generating free radicals while deteriorating the cellular antioxidant defense system. The present study was designed to evaluate the effectiveness of tert-butylhydroquinone (TBHQ), a synthetic food additive, in serving as an antioxidant against sub-lethal diazinon-induced oxidative stress in male Wistar rats. Animals were randomly divided into 4 groups: Control (treated with corn oil as a vehicle), diazinon (10 mg/kg/day), TBHQ (0...
June 2018: Biomedical Reports
https://www.readbyqxmd.com/read/29773395/x-ray-powder-diffraction-and-other-analyses-of-cellulose-nanocrystals-obtained-from-corn-straw-by-chemical-treatments
#19
C C Hernandez, F F Ferreira, D S Rosa
The extraction of nanocellulose from agro-industrial wastes is feasible due to a significant amount of cellulose contained in these natural fibers. The analysis of chemical treatments effects on the fibers to obtain the nanocellulose must be taken into consideration for the definition of an adequate and efficient methodology. In this study, two alkaline treatments were used (cleaning and bleaching), as well as an acid treatment for the extraction of nanocellulose from corn straw residues. The samples were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), dynamic light scattering (DLS) and atomic force microscopy (AFM) to verify the action and modifications caused in their chemical and physical structures...
August 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29773243/impact-of-diabetes-and-increasing-body-mass-index-category-on-left-ventricular-systolic-and-diastolic-function
#20
Arnold C T Ng, Francesca Prevedello, Giulia Dolci, Cornelis J Roos, Roxana Djaberi, Matteo Bertini, See Hooi Ewe, Christine Allman, Dominic Y Leung, Nina Ajmone Marsan, Victoria Delgado, Jeroen J Bax
BACKGROUND: Diabetes and obesity are both worldwide growing epidemics, and both are independently associated with increased risk for heart failure and death. The aim of this study was to examine the additive detrimental effect of both diabetes and increasing body mass index (BMI) category on left ventricular (LV) myocardial systolic and diastolic function. METHODS: The present retrospective multicenter study included 653 patients (337 with type 2 diabetes and 316 without diabetes) of increasing BMI category...
May 15, 2018: Journal of the American Society of Echocardiography
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