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https://www.readbyqxmd.com/read/29779069/highly-sensitive-and-selective-detection-of-amoxicillin-using-carbon-quantum-dots-derived-from-beet
#1
Kunjie Wang, Qingjuan Ji, Jialin Xu, Hongxia Li, Deyi Zhang, Xiaoyu Liu, Yujuan Wu, Haiyan Fan
In the present work, we synthesized the carbon quantum dots (CQDs) by one step hydrothermal method using the dried beet powder as the carbon source without additional chemical reagents and functionalization. The as-prepared CQDs are quasi-spherical carbon nanoparticles with diameters of 4-8 nm as well as surface functional groups such as carboxyl and hydroxyl groups, and exhibit good water-solubility, biocompatibility, and strong fluorescence. It is confirmed that amoxicillin (AMO) could enhance the fluorescent intensity of CQDs, the I/I 0 showed a linear correlation between the intensity of fluorescence and the concentration of AMO in a broad range...
May 19, 2018: Journal of Fluorescence
https://www.readbyqxmd.com/read/29778939/relationship-between-the-structure-of-fe-mcm-48-and-its-activity-in-catalytic-ozonation-for-diclofenac-mineralization
#2
Xukai Li, Weirui Chen, Yiming Tang, Laisheng Li
Fe-MCM-48 catalyst with a three-dimensional cubic pore structure was directly synthesized via a hydrothermal method, and the mineralization efficiency of diclofenac (DCF) in the catalytic ozonation process (Fe-MCM-48/O3 ) was assessed. X-ray diffraction (XRD), N2 adsorption desorption, transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) characterizations revealed that Fe existed in the framework of MCM-48, and Fe-MCM-48 possessed a large surface area and a highly ordered cubic mesoporous structure, which could accelerate reactants and products diffusion...
May 12, 2018: Chemosphere
https://www.readbyqxmd.com/read/29778925/deep-learning-strategy-for-accurate-carotid-intima-media-thickness-measurement-an-ultrasound-study-on-japanese-diabetic-cohort
#3
Mainak Biswas, Venkatanareshbabu Kuppili, Tadashi Araki, Damodar Reddy Edla, Elisa Cuadrado Godia, Luca Saba, Harman S Suri, Tomaž Omerzu, John R Laird, Narendra N Khanna, Andrew Nicolaides, Jasjit S Suri
MOTIVATION: The carotid intima-media thickness (cIMT) is an important biomarker for cardiovascular diseases and stroke monitoring. This study presents an intelligence-based, novel, robust, and clinically-strong strategy that uses a combination of deep-learning (DL) and machine-learning (ML) paradigms. METHODOLOGY: A two-stage DL-based system (a class of AtheroEdge™ systems) was proposed for cIMT measurements. Stage I consisted of a convolution layer-based encoder for feature extraction and a fully convolutional network-based decoder for image segmentation...
May 12, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29778680/land-use-regression-models-to-assess-air-pollution-exposure-in-mexico-city-using-finer-spatial-and-temporal-input-parameters
#4
Yeongkwon Son, Álvaro R Osornio-Vargas, Marie S O'Neill, Perry Hystad, José L Texcalac-Sangrador, Pamela Ohman-Strickland, Qingyu Meng, Stephan Schwander
The Mexico City Metropolitan Area (MCMA) is one of the largest and most populated urban environments in the world and experiences high air pollution levels. To develop models that estimate pollutant concentrations at fine spatiotemporal scales and provide improved air pollution exposure assessments for health studies in Mexico City. We developed finer spatiotemporal land use regression (LUR) models for PM2.5 , PM10 , O3 , NO2 , CO and SO2 using mixed effect models with the Least Absolute Shrinkage and Selection Operator (LASSO)...
May 17, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29778606/avatrombopag-before-procedures-reduces-need-for-platelet-transfusion-in-patients-with-chronic-liver-disease-and-thrombocytopenia
#5
Norah Terrault, Yi-Cheng Chen, Namiki Izumi, Zeid Kayali, Paul Mitrut, Won Young Tak, Lee F Allen, Tarek Hassanein
BACKGROUND & AIMS: Patients with thrombocytopenia and chronic liver disease (CLD) may require platelet transfusions before scheduled procedures to decrease risk of bleeding. We performed 2 randomized, placebo-controlled, phase 3 trials in patients with thrombocytopenia and CLD undergoing scheduled procedures to evaluate the safety and efficacy of avatrombopag in increasing platelet counts in this patient population METHODS: In the ADAPT-1 and ADAPT-2 studies, adults with thrombocytopenia and CLD (n=231 and n= 204, respectively) were in 1 of 2 cohorts according to their baseline platelet count (below 40x109 /L or 40-50x109 /L) and within each cohort randomized (2:1) to 5 daily doses of avatrombopag (60 mg if baseline platelet count below 40x109 /L or 40 mg if 40-50x109 /L) or placebo...
May 17, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29778598/relevance-of-antiplatelet-therapy-duration-after-stent-assisted-coil-embolization-for-unruptured-intracranial-aneurysms
#6
Tackeun Kim, Chang Hyeun Kim, Si-Hyuck Kang, Seung Pil Ban, O-Ki Kwon
BACKGROUND: The optimal duration of dual antiplatelet therapy (DAPT) for preventing delayed thromboembolic events (DTEs) remains unclear. We aimed to determine whether longer DAPT provides improved protection against delayed DTEs. METHODS: This retrospective cohort study included 507 stent-assisted coil embolization procedures using a single stent for unruptured intracranial aneurysms. We performed coarsened exact matching according to the duration of maintenance DAPT...
May 17, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29778525/mucus-penetrating-nanoparticles-promising-drug-delivery-systems-for-the-photodynamic-therapy-of-intestinal-cancer
#7
Juliane Anderski, Laura Mahlert, Dennis Mulac, Klaus Langer
Photodynamic therapy (PDT) is an auspicious therapy approach for the treatment of cancer. Despite its numerous benefits, the drug delivery of the used photosensitizer (PS) to target locations inside the human body remains a main therapy challenge, since the standard intravenous PS injection often causes systemic side-effects. To circumvent this therapy drawback, the oral application represents a promising administration alternative. Especially for the treatment of intestinal cancer it offers the possibility of a local treatment with a reduced likelihood for adverse drug reactions...
May 17, 2018: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29778473/characterization-of-best-linear-unbiased-estimates-generated-from-national-genetic-evaluations-of-reproductive-performance-survival-and-milk-yield-in-dairy-cows
#8
F L Dunne, M M Kelleher, S W Walsh, D P Berry
Genetic evaluations decompose an observed phenotype into its genetic and nongenetic components; the former are termed BLUP with the solutions for the systematic environmental effects in the statistical model termed best linear unbiased estimates (BLUE). Geneticists predominantly focus on the BLUP and rarely consider the BLUE. The objective of this study, however, was to define and quantify the association between 8 herd-level characteristics and BLUE for 6 traits in dairy herds, namely (1) age at first calving, (2) calving to first service interval (CFS), (3) number of services, (4) calving interval (CIV), (5) survival, and (6) milk yield...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778449/mechanisms-underlying-the-relaxation-by-a484954-a-eukaryotic-elongation-factor-2-kinase-inhibitor-in-rat-isolated-mesenteric-artery
#9
Tomoko Kodama, Muneyoshi Okada, Hideyuki Yamawaki
Eukaryotic elongation factor 2 kinase (eEF2K) is a calmodulin-related protein kinase which regulates protein translation. A484954 is an inhibitor of eEF2K. In the present study, we investigated the acute effects of A484954 on contractility of isolated blood vessels. Isometric contraction of rat isolated aorta and main branch of superior mesenteric artery (MA) was measured. Expression of an inward rectifier K+ (Kir ) channel subtype mRNA and protein was examined. A484954 caused relaxation in endothelium-intact [E (+)] and -denuded [E (-)] aorta or MA precontracted with noradrenaline (NA)...
May 2, 2018: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/29778418/correlation-between-translational-and-rotational-kinematic-abnormalities-and-osteoarthritis-like-damage-in-two-in-vivo-sheep-injury-models
#10
Mehdi Shekarforoush, Jillian E Beveridge, David A Hart, Cyril B Frank, Nigel G Shrive
The relations between kinematic abnormalities and post traumatic osteoarthritis have not yet been clearly elucidated. This study was conducted to determine the finite helical axes parameters and the tibiofemoral translation vector in the knee joints of two surgically induced injury sheep models: anterior cruciate ligament and medial collateral ligament transection (ACL/MCL Tx) (n = 5) and lateral meniscectomy (n = 5). We hypothesized that morphological damage in the experimental joints would be correlated to alterations in these kinematic variables...
May 16, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29778403/the-cf-sputum-induction-trial-cf-spit-to-assess-lower-airway-bacterial-sampling-in-young-children-with-cystic-fibrosis-a-prospective-internally-controlled-interventional-trial
#11
Katherine Ronchetti, Jo-Dee Tame, Christopher Paisey, Lena P Thia, Iolo Doull, Robin Howe, Eshwar Mahenthiralingam, Julian T Forton
BACKGROUND: Pathogen surveillance is challenging but crucial in children with cystic fibrosis-who are often non-productive of sputum even if actively coughing-because infection and lung disease begin early in life. The role of sputum induction as a diagnostic tool for infection has not previously been systematically addressed in young children with cystic fibrosis. We aimed to assess the pathogen yield from sputum induction compared with that from cough swab and single-lobe, two-lobe, and six-lobe bronchoalveolar lavage...
May 16, 2018: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/29778369/programming-the-endometrium-for-deferred-transfer-of-cryopreserved-embryos-hormone-replacement-versus-modified-natural-cycles
#12
REVIEW
Eva R Groenewoud, Bernard J Cohlen, Nicholas S Macklon
Over the last decade the use of frozen-thawed embryo transfer has substantially increased, and currently up to one in two embryos transferred has been cryopreserved. To support implantation, endometrial and embryo maturity are required to be synchronized. This can be achieved in various ways. The most commonly applied endometrial preparation methods are the "natural cycle," in which the sequential estrogen and P necessary for endometrial maturation are derived from the developing follicle, and the "artificial" cycle, in which these are sequentially administered...
May 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29778364/prevention-of-cardiovascular-events-in-asian-patients-with-ischaemic-stroke-at-high-risk-of-cerebral-haemorrhage-picasso-a-multicentre-randomised-controlled-trial
#13
Bum Joon Kim, Eun-Jae Lee, Sun U Kwon, Jong-Ho Park, Yong-Jae Kim, Keun-Sik Hong, Lawrence K S Wong, Sungwook Yu, Yang-Ha Hwang, Ji Sung Lee, Juneyoung Lee, Joung-Ho Rha, Sung Hyuk Heo, Sung Hwan Ahn, Woo-Keun Seo, Jong-Moo Park, Ju-Hun Lee, Jee-Hyun Kwon, Sung-Il Sohn, Jin-Man Jung, Jose C Navarro, Dong-Wha Kang
BACKGROUND: The optimal treatment for patients with ischaemic stroke with a high risk of cerebral haemorrhage is unclear. We assessed the efficacy and safety of cilostazol versus aspirin, with and without probucol, in these patients. METHODS: In this randomised, controlled, 2 × 2 factorial trial, we enrolled patients with ischaemic stroke with a history of or imaging findings of intracerebral haemorrhage or two or more microbleeds from 67 centres in three Asian countries...
June 2018: Lancet Neurology
https://www.readbyqxmd.com/read/29778349/a-contemporary-prostate-biopsy-risk-calculator-based-on-multiple-heterogeneous-cohorts
#14
Donna P Ankerst, Johanna Straubinger, Katharina Selig, Lourdes Guerrios, Amanda De Hoedt, Javier Hernandez, Michael A Liss, Robin J Leach, Stephen J Freedland, Michael W Kattan, Robert Nam, Alexander Haese, Francesco Montorsi, Stephen A Boorjian, Matthew R Cooperberg, Cedric Poyet, Emily Vertosick, Andrew J Vickers
BACKGROUND: Prostate cancer prediction tools provide quantitative guidance for doctor-patient decision-making regarding biopsy. The widely used online Prostate Cancer Prevention Trial Risk Calculator (PCPTRC) utilized data from the 1990s based on six-core biopsies and outdated grading systems. OBJECTIVE: We prospectively gathered data from men undergoing prostate biopsy in multiple diverse North American and European institutions participating in the Prostate Biopsy Collaborative Group (PBCG) in order to build a state-of-the-art risk prediction tool...
May 16, 2018: European Urology
https://www.readbyqxmd.com/read/29778325/tranexamic-acid-for-hyperacute-primary-intracerebral-haemorrhage-tich-2-an-international-randomised-placebo-controlled-phase-3-superiority-trial
#15
Nikola Sprigg, Katie Flaherty, Jason P Appleton, Rustam Al-Shahi Salman, Daniel Bereczki, Maia Beridze, Hanne Christensen, Alfonso Ciccone, Ronan Collins, Anna Czlonkowska, Robert A Dineen, Lelia Duley, Juan Jose Egea-Guerrero, Timothy J England, Kailash Krishnan, Ann Charlotte Laska, Zhe Kang Law, Serefnur Ozturk, Stuart J Pocock, Ian Roberts, Thompson G Robinson, Christine Roffe, David Seiffge, Polly Scutt, Jegan Thanabalan, David Werring, David Whynes, Philip M Bath
BACKGROUND: Tranexamic acid can prevent death due to bleeding after trauma and post-partum haemorrhage. We aimed to assess whether tranexamic acid reduces haematoma expansion and improves outcome in adults with stroke due to intracerebral haemorrhage. METHODS: We did an international, randomised placebo-controlled trial in adults with intracerebral haemorrhage from acute stroke units at 124 hospital sites in 12 countries. Participants were randomly assigned (1:1) to receive 1 g intravenous tranexamic acid bolus followed by an 8 h infusion of 1 g tranexamic acid or a matching placebo, within 8 h of symptom onset...
May 15, 2018: Lancet
https://www.readbyqxmd.com/read/29778285/subcutaneous-tissue-metastasis-from-glioblastoma-multiforme-a-case-report-and-review-of-the-literature
#16
Natalia Frade Porto, Juan Delgado Fernández, María de Los Ángeles García Pallero, Juan Ramón Penanes Cuesta, Paloma Pulido Rivas, Ricardo Gil Simoes
Glioblastoma multiforme is the most common primary brain tumor, despite an aggressive clinical course, less than 2% of patients develop extraneural metastasis. We present a 72-year-old male diagnosed with a right temporal glioblastoma due to headache. He underwent total gross resection surgery and after that the patient was treated with adyuvant therapy. Five months after the patient returned with trigeminal neuralgia, and MRI showed an infratemporal cranial mass which infiltrates masticator space, the surrounding bone, the temporal muscle and superior cervical and parotid lymph nodes...
May 16, 2018: Neurocirugía
https://www.readbyqxmd.com/read/29778275/quantifying-the-effects-of-16p11-2-copy-number-variants-on-brain-structure-a-multisite-genetic-first-study
#17
Sandra Martin-Brevet, Borja Rodríguez-Herreros, Jared A Nielsen, Clara Moreau, Claudia Modenato, Anne M Maillard, Aurélie Pain, Sonia Richetin, Aia E Jønch, Abid Y Qureshi, Nicole R Zürcher, Philippe Conus, Wendy K Chung, Elliott H Sherr, John E Spiro, Ferath Kherif, Jacques S Beckmann, Nouchine Hadjikhani, Alexandre Reymond, Randy L Buckner, Bogdan Draganski, Sébastien Jacquemont
BACKGROUND: 16p11.2 breakpoint 4 to 5 copy number variants (CNVs) increase the risk for developing autism spectrum disorder, schizophrenia, and language and cognitive impairment. In this multisite study, we aimed to quantify the effect of 16p11.2 CNVs on brain structure. METHODS: Using voxel- and surface-based brain morphometric methods, we analyzed structural magnetic resonance imaging collected at seven sites from 78 individuals with a deletion, 71 individuals with a duplication, and 212 individuals without a CNV...
March 27, 2018: Biological Psychiatry
https://www.readbyqxmd.com/read/29778156/preparation-and-characterization-of-a-novel-hybrid-chelating-material-for-effective-adsorption-of-cu-ii-and-pb-ii
#18
Ya Liu, Peng Qian, Yang Yu, Bo Yu, Yongliang Wang, Shufeng Ye, Yunfa Chen
The discharge of heavy metal ions such as Cu2+ and Pb2+ poses a severe threat to public health and the environment owing to their extreme toxicity and bioaccumulation through food chains. Herein, we report a novel organic-inorganic hybrid adsorbent, Al(OH)3 -poly(acrylamide-dimethyldiallylammonium chloride)-graft-dithiocarbamate (APD), for rapid and effective removal of Cu2+ and Pb2+ . In this adsorbent, the "star-like" structure of Al(OH)3 -poly(acrylamide-dimethyldiallylammonium chloride) served as the support of dithiocarbamate (DTC) functional groups for easy access of heavy metal ions and assisted development of large and compact floccules...
May 2018: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29778094/substrate-sustained-release-based-high-efficacy-biosynthesis-of-gaba-by-lactobacillus-brevis-ncl912
#19
Qiong Wang, Xiaohua Liu, Jinheng Fu, Shuixing Wang, Yuanhong Chen, Kunpeng Chang, Haixing Li
BACKGROUND: Gamma-aminobutyric acid (GABA) plays a significant role in the food and drug industries. Our previous study established an efficient fed-batch fermentation process for Lactobacillus brevis NCL912 production of GABA from monosodium L-glutamate; however, monosodium L-glutamate may not be an ideal substrate, as it can result in the rapid increase of pH due to decarboxylation. Thus, in this study, L-glutamic acid was proposed as a substrate. To evaluate its potential, key components of the fermentation medium affecting GABA synthesis were re-screened and re-optimized to enhance GABA production from L...
May 19, 2018: Microbial Cell Factories
https://www.readbyqxmd.com/read/29778049/toxicity-screening-of-biochar-mineral-composites-using-germination-tests
#20
Jan Mumme, Josephine Getz, Munoo Prasad, Ulf Lüder, Jürgen Kern, Ondřej Mašek, Wolfram Buss
This study assessed the properties and toxicity (water cress germination trials) of 38 waste-derived, novel biochar-mineral composites (BMCs) produced via slow pyrolysis and hydrothermal carbonization (hydrochars). The biochars were produced from sewage sludge and compost-like output (CLO) by varying the type of mineral additive (zeolite, wood ash and lignite fly ash), the mineral-to-feedstock ratio and the carbonization process. While pure hydrochars completely inhibited germination of water cress, this effect was ameliorated by mineral additives...
May 8, 2018: Chemosphere
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