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https://www.readbyqxmd.com/read/28917800/%C3%AE-cyclodextrins-incorporated-multi-walled-carbon-nanotubes-modified-electrode-for-the-voltammetric-determination-of-the-pesticide-dichlorophen
#1
Karolina Sipa, Mariola Brycht, Andrzej Leniart, Paweł Urbaniak, Agnieszka Nosal-Wiercińska, Bartłomiej Pałecz, Sławomira Skrzypek
In this work, a glassy carbon electrode modified with β-cyclodextrins and multi-walled carbon nanotubes (β-CDs/MWCNTs/GCE) was constructed and applied for the square-wave adsorptive stripping voltammetric (SWAdSV) determination of the pesticide dichlorophen (Dcp). For the first time, this compound was electrochemically investigated. The voltammetric measurements were conducted in phosphate buffer (PBS) at pH 6.5 as a supporting electrolyte, and SWAdSV technique parameters were optimized. A linear calibration curve in the wide concentration range from 5...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917790/a-green-solvent-holder-in-electro-mediated-microextraction-for-the-extraction-of-phenols-in-water
#2
Yu Ting Chong, Marinah Mohd Ariffin, Norhayati Mohd Tahir, Saw Hong Loh
Electro-mediated microextraction (EMM) combined with micro-high performance liquid chromatography-ultraviolet detection was successfully developed for the determination of selected phenols, namely 4-chlorophenol (4CP), 2-nitrophenol (2NP) and 2,4-dichlorophenols (2,4 DCP) in water. A solvent-impregnated agarose gel disc was utilized as a solvent holder in this study. Under optimum extraction conditions, the method showed good linearity in the range of 0.1-250µgL(-1), 0.3-250µgL(-1) and 0.2-500µgL(-1) for 4CP, 2NP and 2,4 DCP, respectively with correlation coefficients of ≥ 0...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917200/improved-visible-light-activities-for-degrading-pollutants-on-tio2-g-c3n4-nanocomposites-by-decorating-spr-au-nanoparticles-and-2-4-dichlorophenol-decomposition-path
#3
Amir Zada, Yang Qu, Sharafat Ali, Ning Sun, Hongwei Lu, Rui Yan, Xuliang Zhang, Liqiang Jing
It has been clearly demonstrated that the visible-light photocatalytic activities of g-C3N4 (CN) for degrading 2,4-dichlorophenol (2,4-DCP) and bisphenol A (BPA) could be improved by fabricating nanocomposites with a proper amount of nanocrystalline anatase TiO2. Interestingly, the visible-light activities of the amount-optimized nanocomposite could be further improved after decorating Au nanoparticles, with 5.11- and 3.1-time improvement respectively for 2,4-DCP and BPA compared to that of CN, even much higher than that of P25 TiO2 under UV-vis irradiation...
September 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28902097/retinal-microvasculature-and-visual-acuity-after-intravitreal-aflibercept-in-eyes-with-central-retinal-vein-occlusion-an-optical-coherence-tomography-angiography-study
#4
Andrew Winegarner, Taku Wakabayashi, Chikako Hara-Ueno, Tatsuhiko Sato, Caleb Busch, Yoko Fukushima, Kaori Sayanagi, Kentaro Nishida, Hirokazu Sakaguchi, Kohji Nishida
PURPOSE: To investigate vascular perfusion and foveal avascular zone area in the superficial capillary plexus (SCP) and deep capillary plexus (DCP) after intravitreal aflibercept therapy in central retinal vein occlusion eyes and their association with best-corrected visual acuity. METHODS: Thirty-five subjects with central retinal vein occlusion and macular edema were evaluated. After macular edema resolution following intravitreal aflibercept, subjects underwent optical coherence tomography angiography to measure SCP and DCP perfusion and the foveal avascular zone within a 3 × 3-mm area...
September 7, 2017: Retina
https://www.readbyqxmd.com/read/28901698/online-training-introduces-a-novel-approach-to-the-dietetic-care-process-documentation
#5
Shelly Rachman-Elbaum, Aliza H Stark, Josefa Kachal, Teresa Johnson, Bat Sheva Porat-Katz
AIM: Nutrition professionals in Israel are developing a system to document the Dietetic Care Process (DCP) tailored for specific patient sectors and compliant with national health guidelines. The ultimate goal is to achieve uniform documentation and improve nutrition care. Israeli dietetic practitioners work in specific patient sectors; therefore, a patient population-specific reporting system is proposed instead of the typical singular format applied across all patient populations. The purpose of this project was to evaluate learning outcomes and attitudes among registered dietitians (RDs) after online training of a novel DCP documentation system...
September 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/28890268/novel-acylhydrazone-bond-dynamic-covalent-polymer-gel-monolithic-column-online-coupling-to-high-performance-liquid-chromatography-for-analysis-of-sulfonamides-and-fluorescent-whitening-agents-in-food
#6
Chengjiang Zhang, Xialin Luo, Tianfu Wei, Yufei Hu, Gongke Li, Zhuomin Zhang
A new dynamic covalent polymer (DCP) gel was well designed and constructed based on imine chemistry. Polycondensation of 4,4'-biphenyldicarboxaldehyde and 1,3,5-benzenetricarbohydrazide via Schiff-base reaction resulted in an acylhydrazone bond gel (AB-gel) DCP. AB-gel DCP had three-dimensional network of interconnected nanoparticles with hierarchically porous structure. AB-gel DCP was successfully fabricated as a monolithic column by an in-situ chemical bonding method for online enrichment and separation purpose with excellent permeability...
September 4, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28866210/synergic-effect-of-chitosan-and-dicalcium-phosphate-on-tricalcium-silicate-based-nanocomposite-for-root-end-dental-application
#7
Fatemeh Panahi, Sayed Mahmood Rabiee, Reza Shidpour
In recent years, cement composites based on calcium silicate have been more generally considered for medical applications. Calcium silicate Cement are among the categories that are used in dental root canal treatment. The aim of this study is to make new calcium silicate cement with dicalcium phosphate and chitosan additives to preserve and strengthen desirable properties of this type of cements. In this study, composite dental cement based on calcium silicate was prepared. Then effect of adding biodegradable and biocompatible polymer such as chitosan on setting properties and its structure were studied...
November 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28859940/downstream-drug-product-processing-of-itraconazole-nanosuspension-factors-influencing-tablet-material-properties-and-dissolution-of-compacted-nanosuspension-layered-sugar-beads
#8
En Hui Tan, Johannes Parmentier, Ariana Low, Jan Peter Möschwitzer
There has been limited research done on the downstream processing of nanosuspensions into solid oral dosage forms. This paper demonstrates the bead layering process with a layering level at 150% and 240%, as well as the selection and justification of the outer phase excipients for tabletability and disintegrating properties. In a previous study, an itraconazole nanosuspension stabilised by SDS and HPMC E5 was layered onto sugar beads with coating polymer HPMC VLV. In the current study, compression studies with these layered beads utilising the small bead size at 150% or 240% layering levels with outer phase cushioning excipients MCC, copovidone or isomalt were performed...
August 30, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28843851/1-3-dichloro-2-propanol-induced-lipid-accumulation-in-hepg2-cells-through-camp-protein-kinase-a-and-amp-activated-protein-kinase-pathways-via-gi-o-coupled-receptors
#9
Jing Lu, Baochen Fang, Yiying Zheng, Xin Yu, Guoren Huang, Zhenning Wang, Xuming Deng, Shuang Guan
1,3-dichloro-2-propanol (1,3-DCP) is a food born hepatoxic chloropropanol contaminant that has been detected in a wide range of foods. In the present study, we investigated the effects and mechanisms of 1,3-DCP on lipid accumulation in HepG2 cells. The data showed 1,3-DCP significantly increased intracellular content of triglyceride (TG) and total cholesterol (TC) at 0.5-2μg/mL. Further results showed that 1,3-DCP greatly decreased cyclic AMP (cAMP) level. In addition, 1,3-DCP inhibited PKA and AMPK signaling pathway, but had no influence on intracellular calcium and regulated proteins...
July 27, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28840945/the-fabrication-and-the-use-of-immobilized-cells-as-test-organisms-in-a-ferricyanide-based-toxicity-biosensor
#10
Chang Liu, Yingchao Xu, Xiao Han, Xiaojie Chang
Cell immobilization is an effective method to prolong the life time of microorganism and has been proved their feasibility in some other biosensors. Thus, we study on the use of Escherichia coli (E. coli) immobilized by agar, gelatin, agar-gelatin mixture (agar/gelatin), chitosan and polyvinyl alcohol (PVA) to screen toxicity electrochemically. The E. coli immobilized by PAV gel showed the highest apparent bioactivity and the longest storage time in pH 7.0 PBS solution. Furthermore, the E. coli immobilized by different gels was applied in the toxicity determination via a reported ferricyanide-mediated electrochemical method, where 3,5-dichlorophenol (DCP) was used as a model toxin...
August 25, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28828879/social-support-and-coping-in-adults-with-type-2-diabetes
#11
Samantha Ramkisson, Basil J Pillay, Wilbert Sibanda
BACKGROUND: The diagnosis of diabetes has been described as a lifelong psychological burden on the patient and his or her family. Social support plays a pivotal role in patients with diabetes and is important in enabling them to cope effectively with the disease. There is a dearth of research on social support and coping in patients with diabetes in South Africa. OBJECTIVES: The aim of this study was to explore whether patients with poor perceived social support have lower levels of well-being and coping than patients with good social support...
July 31, 2017: African Journal of Primary Health Care & Family Medicine
https://www.readbyqxmd.com/read/28828695/association-of-des-%C3%AE-carboxy-prothrombin-production-and-sonazoid-enhanced-ultrasound-findings-in-hepatocellular-carcinomas-of-different-histologic-grades
#12
Kazumoto Murata, Akiko Saito, Satoshi Katagiri, Shunichi Ariizumi, Masayuki Nakano, Masakazu Yamamoto
PURPOSE: We previously reported that hepatocellular carcinoma (HCC) changes to a phenotype producing des-γ-carboxy prothrombin (DCP) during epithelial mesenchymal transition (EMT) in vitro. To confirm this change in vivo, we evaluated the association between DCP production and HCC hemodynamics in patients undergoing resection as EMT and hemodynamic changes are closely associated with each other. METHODS: We evaluated HCC hemodynamics by employing Sonazoid-enhanced ultrasound (SEUS) before surgical resection, and sought associations with histological grade and immunohistochemical staining of DCP in 19 areas from 11 patients...
August 21, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28827524/in-vivo-assessment-of-macula-in-eyes-of-healthy-children-8-to-16-years-old-using-optical-coherence-tomography-angiography
#13
Zhengwei Zhang, Xiaoli Huang, Xiaomei Meng, Tiantian Chen, Yan Gu, Yan Wu, Zhifeng Wu
The purpose of the present study was to investigate the vascular flow density (VD) of macular superficial (SCP), deep capillary plexus (DCP), and choriocapillaris and the size of the foveal avascular zone (FAZ) area in healthy children using optical coherence tomography angiography (OCTA). The potential associations of age, sex, intraocular pressure, body mass index, spherical equivalent, and axial length with OCTA parameters were also investigated. A total of 75 eyes from 75 healthy children were included for analysis, with the mean age 11...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28823131/effect-of-wheat-bran-and-dried-carrot-pomace-addition-on-quality-characteristics-of-chicken-sausage
#14
Sanjay Yadav, Ashok K Pathera, Rayees Ul Islam, Ashok K Malik, Diwakar P Sharma
Objective: Effect of addition of wheat bran (WB) and dried carrot pomace (DCP) on sensory, textural, colour, physico-chemical and nutritional characteristics of chicken sausage were evaluated. Methods: WB and DCP were used as a source of dietary fibre at 3%, 6% and 9% level individually. Different quality attributes of sausages were estimated. One product from each source with very good sensory acceptability was selected to analyze dietary fibre content and shelf life under refrigerated storage...
August 16, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28822245/sensitive-fluorescence-on-off-probes-for-the-fast-detection-of-a-chemical-warfare-agent-mimic
#15
Muhammad Shar Jhahan Khan, Ya-Wen Wang, Mathias O Senge, Yu Peng
Two highly sensitive probes bearing a nucleophilic imine moiety have been utilized for the selective detection of chemical warfare agent (CWA) mimics. Diethyl chlorophosphate (DCP) was used as mimic CWAs. Both iminocoumarin-benzothiazole-based probes not only demonstrated a remarkable fluorescence ON-OFF response and good recognition, but also exhibited fast response times (10s) along with color changes upon addition of DCP. Limits of detection for the two sensors 1 and 2 were calculated as 0.065μM and 0.21μM, respectively, which are much lower than most other reported probes...
August 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28821123/interfacial-modification-on-polyhydroxyalkanoates-starch-blend-by-grafting-%C3%A2-in-situ
#16
Pengwu Xu, Qingtao Zeng, Ying Cao, Piming Ma, Weifu Dong, Mingqing Chen
The interfacial adhesion between polyhydroxyalkanoates (PHAs) and native starch is poor. To improve the interfacial adhesion, PHAs were in-situ grafted onto starch using dicumyl peroxide (DCP) as a free radical initiator. The grafting reaction was carefully characterized and confirmed by gel analysis and Fourier transform infrared spectroscopy (FT-IR). The gel yield of the PHAs/starch/DCP blend increased with the DCP concentration up to 2wt%. Meanwhile, obvious plastic deformation (stretched fibrils) was observed at the interface in the PHAs/starch/DCP blend in comparison with complete interfacial debonding in the PHAs/starch physical blend...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28819398/clinical-impact-of-vitamin-k-dosing-on-sorafenib-treatment-for-hepatocellular-carcinoma
#17
Yoshimichi Haruna, Noriko Hasegawa, Kazuho Imanaka, Seiichi Kawamoto, Atsuo Inoue
Background: Some researchers have suggested that vitamin K enhances the antitumor effect of sorafenib for hepatocellular carcinoma (HCC) in vitro and in vivo. In this study, we examined the clinical impact of vitamin K dosing for sorafenib treatment. Methods: Twenty-nine out of 65 patients treated with sorafenib for HCC were simultaneously dosed with vitamin K. We retrospectively investigated progression-free survival (PFS) and overall survival (OS) in the vitamin K-dosed group and sorafenib alone group. We also examined the changes in serum des-γ-carboxy prothrombin (DCP) levels, which vitamin K is involved with...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28816119/clinical-presentation-and-management-of-dyskinetic-cerebral-palsy
#18
REVIEW
Elegast Monbaliu, Kate Himmelmann, Jean-Pierre Lin, Els Ortibus, Laura Bonouvrié, Hilde Feys, R Jeroen Vermeulen, Bernard Dan
Cerebral palsy is the most frequent cause of severe physical disability in childhood. Dyskinetic cerebral palsy (DCP) is the second most common type of cerebral palsy after spastic forms. DCP is typically caused by non-progressive lesions to the basal ganglia or thalamus, or both, and is characterised by abnormal postures or movements associated with impaired tone regulation or movement coordination. In DCP, two major movement disorders, dystonia and choreoathetosis, are present together most of the time. Dystonia is often more pronounced and severe than choreoathetosis, with a major effect on daily activity, quality of life, and societal participation...
September 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28813685/purification-and-characterization-of-two-novel-peroxidases-from-the-dye-decolorizing-fungus-bjerkandera-adusta-strain-cx-9
#19
Khelifa Bouacem, Hatem Rekik, Nadia Zaraî Jaouadi, Bilal Zenati, Sidali Kourdali, Mohamed El Hattab, Abdelmalek Badis, Rachid Annane, Samir Bejar, Hocine Hacene, Amel Bouanane-Darenfed, Bassem Jaouadi
Two extracellular peroxidases from Bjerkandera adusta strain CX-9, namely a lignin peroxidase (called LiP BA45) and manganese peroxidase (called MnP BA30), were purified simultaneously by applying successively, ammonium sulfate precipitation-dialysis, Mono-S Sepharose anion-exchange and Sephacryl S-200 gel filtration and biochemically characterized. The sequence of their NH2-terminal amino acid residues showed high homology with those of fungi peroxidases. MALDI-TOF/MS analysis revealed that the purified enzymes MnP BA30 and LiP BA45 were a monomers with a molecular masses 30125...
August 13, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28806103/hsp83-loss-suppresses-proteasomal-activity-resulting-in-an-upregulation-of-caspase-dependent-compensatory-autophagy
#20
Courtney Choutka, Lindsay DeVorkin, Nancy Erro Go, Ying-Chen Claire Hou, Annie Moradian, Gregg B Morin, Sharon M Gorski
The 2 main degradative pathways that contribute to proteostasis are the ubiquitin-proteasome system and autophagy but how they are molecularly coordinated is not well understood. Here, we demonstrate an essential role for an effector caspase in the activation of compensatory autophagy when proteasomal activity is compromised. Functional loss of Hsp83, the Drosophila ortholog of human HSP90 (heat shock protein 90), resulted in reduced proteasomal activity and elevated levels of the effector caspase Dcp-1. Surprisingly, genetic analyses showed that the caspase was not required for cell death in this context, but instead was essential for the ensuing compensatory autophagy, female fertility, and organism viability...
August 14, 2017: Autophagy
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