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https://www.readbyqxmd.com/read/28449406/a-water-stable-dual-channel-luminescence-sensor-for-uo22-ion-based-on-an-anionic-terbium-iii-metal-organic-framework
#1
Junwei Ye, Raji Feyisa Bogale, Yangwei Shi, Yanzhen Chen, Xigang Liu, Yaoyao Yang, Siqi Zhang, Jianzhang Zhao, Guiling Ning
A stable 3D Tb(III)-based metal-organic framework [Tb(BPDC)2]*(CH3)2NH2 (DUT-101) was synthesized, and it is the first efficient dual-channel luminescence sensor for aqueous UO22+ ion. DUT-101 possesses an anionic three-dimensional framework and protonated dimethylamine molecules embedded within the channels. Intense green emission of DUT-101 could be highly selectively and sensitively quenched by UO22+ ions even in the coexistence of other competing metal ions. The possible sensing mechanism was proposed as well based on both suppression of luminescence resonance energy transfer and enhancement of intermolecular electronic transfer...
April 27, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28449252/serum-phosphorus-levels-and-fracture-following-renal-transplantation
#2
Jasna Aleksova, Phillip Wong, William R Mulley, Kay Weng Choy, Robert McLachlan, Peter R Ebeling, Peter G Kerr, Frances Milat
PURPOSE: Increased fracture rates are observed in renal transplant recipients (RTRs) compared with the general population. Risk factors include age, diabetes, dialysis vintage, immunosuppression, and mineral and bone disorders(1). Low serum phosphorus levels occur post-transplantation; however its relationship with fracture risk has not been evaluated. The purpose of this study was to evaluate risk factors for fracture in RTRs at a single tertiary referral centre. METHODS: A retrospective cross-sectional analysis of 146 patients (75M, 71F) who had been referred for dual energy x-ray densitometry (DXA) post-renal transplantation was performed...
April 27, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28449056/plant-hexokinases-are-multifaceted-proteins
#3
Giovanna P Aguilera-Alvarado, Sobeida Sánchez-Nieto
Sugars are the main carbon and energy source in cells, but they can also act as signaling molecules that affect the whole plant life cycle. Certain tissues can produce sugars and supply them to others, and this plant tissue heterogeneity makes sugar signaling a highly complex process that requires elements capable of perceiving changes in sugar concentrations among different tissues, cell compartments and developmental stages. In plants, the regulatory effects of Glucose (Glc) have been the most studied to date...
April 25, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28448423/dual-energy-ct-balance-between-iodine-attenuation-and-artifact-reduction-for-the-evaluation-of-head-and-neck-cancer
#4
Jaykumar R Nair, François DeBlois, Thomas Ong, Slobodan Devic, Nada Tomic, Hamed Bekerat, Lorne Rosenbloom, Khalil Sultanem, Reza Forghani
OBJECTIVE: Dual-energy computed tomography high energy virtual monochromatic images (VMIs) can reduce artifact but suppress iodine attenuation in enhancing tumor. We investigated this trade-off to identify VMI(s) that strike the best balance between iodine detection and artifact reduction. METHODS: The study was performed using an Alderson radiation therapy phantom. Different iodine solutions (based on estimated tumor iodine content in situ using dual-energy computed tomography material decomposition) and different dental fillings were investigated...
April 26, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28448413/the-application-of-iodine-quantitative-information-obtained-by-dual-source-dual-energy-computed-tomography-on-chemoradiotherapy-effect-monitoring-for-cervical-cancer-a-preliminary-study
#5
Changqin Jiang, Pin Yang, Junqiang Lei, Jinkui Li, Kun Yan, Feilong Li, Ruifeng Yan, Lichao Xia
OBJECTIVE: The aim of the study is to investigate the potential contribution of the iodine quantitative parameters of dual-phase dual-energy computed tomography (DECT) scanning for chemoradiotherapy (CRT) response monitoring for cervical cancer. METHODS: Patients who were pathologically certified having cervical cancer and intended for concurrent radiotherapy and chemotherapy were prospectively included in our study. Contrast-enhanced DECT scanning was performed before CRT, which was repeated after 1 month of therapy, using a dual-source CT scanner onset...
April 26, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28448210/body-composition-and-inflammatory-markers-in-pubertal-girls-comparison-between-athletes-and-non-athletic-controls
#6
Jaak Jürimäe, Kristel Võsoberg, Anna-Liisa Tamm, Katre Maasalu, Liina Remmel, Vallo Tillmann
Various inflammation parameters are increased with childhood obesity, but few comparable data are found in lean growing athletes. This study aims to characterize differences in 12 simultaneously measured inflammatory parameters between pubertal rhythmic gymnasts (RG) and untrained controls (UC), and to examine the relationship between body composition and inflammatory markers. Sixty 10-12-year-old girls were divided into RG (n = 30) and UC (n = 30). Fat mass (FM) and fat free mass (FFM) were measured by dual-energy X-ray absorptiometry...
April 27, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28448089/bone-degeneration-and-its-recovery-in-smp30-gnl-knockout-mice
#7
K Nishijima, T Ohno, A Amano, Y Kishimoto, Y Kondo, A Ishigami, S Tanaka
Senescence marker protein-30 (SMP30) decreases androgen-independently with aging and is a lactone-hydrolyzing enzyme gluconolactonase (GNL) that is involved in vitamin C biosynthesis. In the present study, bone properties of SMP30/GNL knockout (KO) mice with deficiency in vitamin C synthesis were investigated to reveal the effects of SMP30/GNL and exogenous vitamin C supplementation on bone formation. Mineral content (BMC) and mineral density (BMD) of the mandible and femur of SMP30/GNL KO and wild-type mice at 2 and 3 months of age with or without vitamin C supplementation were measured by dual-energy X-ray absorptiometry...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28447585/metabolic-profiles-of-individuals-switched-to-second-line-antiretroviral-therapy-after-failing-standard-first-line-therapy-for-treatment-of-hiv-1-infection-in-a-randomized-controlled-trial
#8
Amanda H Yao, Cecilia L Moore, Poh Lian Lim, Jean-Michel Molina, Juan Sierra Madero, Stephen Kerr, Paddy Wg Mallon, Sean Emery, David A Cooper, Mark A Boyd
BACKGROUND: To investigate metabolic changes associated with second-line antiretroviral therapy (ART) following virological failure of first-line ART. METHODS: SECOND-LINE was an open-label randomized controlled trial. Participants were randomized 1:1 to receive ritonavir-boosted lopinavir (LPV/r) with 2-3 nucleoside/nucleotide reverse transcriptase inhibitors (N(t)RTI-group) or raltegravir (RAL-group) Two hundred and ten participants had a dual energy X-ray absorptiometry (DXA)-scan at baseline, week 48 and 96...
April 27, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28447206/new-urate-depositions-on-dual-energy-computed-tomography-in-gouty-arthritis-during-urate-lowering-therapy
#9
Zhuojun Zhang, Xiaojie Zhang, Ying Sun, Huiyong Chen, Xiufang Kong, Jianjun Zhou, Yi Zhou, Lili Ma, Lindi Jiang
Reduction of urate depositions in the joints, on dual-energy computed tomography (DECT), in patients with gout during urate-lowering therapy (ULT) was demonstrated in previous studies. The aim of this study was to further investigate the changes in distribution of urate deposits during ULT. This randomized controlled trial enrolled 46 patients diagnosed with gout from Zhongshan Hospital, China, between October 2013 and June 2014. Epidemiological data, serum uric acid level, and arthritis attacks were recorded at monthly follow-up visits...
April 26, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28445908/diagnosis-of-pulmonary-artery-embolism-comparison-of-single-source-ct-and-3rd-generation-dual-source-ct-using-a-dual-energy-protocol-regarding-image-quality-and-radiation-dose
#10
Bernhard Petritsch, Aleksander Kosmala, Tobias Gassenmaier, Andreas Max Weng, Simon Veldhoen, Andreas Steven Kunz, Thorsten Alexander Bley
Purpose To compare radiation dose, subjective and objective image quality of 3 rd generation dual-source CT (DSCT) and dual-energy CT (DECT) with conventional 64-slice single-source CT (SSCT) for pulmonary CTA. Materials and Methods 180 pulmonary CTA studies were performed in three patient cohorts of 60 patients each. Group 1: conventional SSCT 120 kV (ref.); group 2: single-energy DSCT 100 kV (ref.); group 3: DECT 90/Sn150 kV. CTDIvol, DLP, effective radiation dose were reported, and CT attenuation (HU) was measured on three central and peripheral levels...
April 26, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28445780/mitochondrial-ribosomes-in-cancer
#11
REVIEW
Hyun-Jung Kim, Priyanka Maiti, Antoni Barrientos
Mitochondria play fundamental roles in the regulation of life and death of eukaryotic cells. They mediate aerobic energy conversion through the oxidative phosphorylation (OXPHOS) system, and harbor and control the intrinsic pathway of apoptosis. As a descendant of a bacterial endosymbiont, mitochondria retain a vestige of their original genome (mtDNA), and its corresponding full gene expression machinery. Proteins encoded in the mtDNA, all components of the multimeric OXPHOS enzymes, are synthesized in specialized mitochondrial ribosomes (mitoribosomes)...
April 23, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28445377/first-lower-two-thirds-osteomyocutaneous-facial-allograft-perfused-by-a-unilateral-facial-artery-outcomes-and-vascularization-at-1-year-after-transplantation
#12
Sebastian Fischer, Thomas C Lee, Nicco Krezdorn, Muayyad Alhefzi, Maximilian Kueckelhaus, Ericka M Bueno, Bohdan Pomahac
BACKGROUND: Facial allotransplantation provides a unique opportunity to restore facial form and function in severely disfigured patients. Using a single unilateral facial artery for vascularization can significantly reduce surgical duration and thus facilitate the practice of face transplantation. METHODS: A 33-year-old man with a history of high-energy ballistic trauma received a facial allograft comprising the lower two-thirds of the face, including maxilla and mandible...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28444432/childhood-growth-predicts-higher-bone-mass-and-greater-bone-area-in-early-old-age-findings-among-a-subgroup-of-women-from-the-helsinki-birth-cohort-study
#13
T M Mikkola, M B von Bonsdorff, C Osmond, M K Salonen, E Kajantie, C Cooper, M J Välimäki, J G Eriksson
We examined the associations between childhood growth and bone properties among women at early old age. Early growth in height predicted greater bone area and higher bone mineral mass. However, information on growth did not improve prediction of bone properties beyond that predicted by body size at early old age. INTRODUCTION: We examined the associations between body size at birth and childhood growth with bone area, bone mineral content (BMC), and areal bone mineral density (aBMD) in early old age...
April 25, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28443489/relationship-between-volition-physical-activity-and-weight-loss-maintenance-study-rationale-design-methods-and-baseline-characteristics
#14
Sune Dandanell, Anne-Marie Elbe, Gertrud Pfister, Peter Elsborg, Jørn W Helge
AIMS: To investigate the relationship between volition, physical activity and weight loss maintenance. METHODS: We recruited 84 sedentary (maximal oxygen uptake: 25 ± 5 ml/min), overweight and obese (Body mass index (BMI) 38 ± 7 m/h(2), fat 44 ± 7 %) women ( n = 55) and men ( n = 29) for an interdisciplinary prospective study with follow-up. The change in lifestyle and weight loss is promoted via a 3-month intensive lifestyle intervention at a private health school...
May 2017: Scandinavian Journal of Public Health
https://www.readbyqxmd.com/read/28442780/the-effect-of-body-composition-and-serum-inflammatory-markers-on-the-functional-muscle-bone-unit-in-premenopausal-women
#15
S M Mueller, I Herter-Aeberli, A C Cepeda-Lopez, M Flück, H H Jung, M Toigo
BACKGROUND/OBJECTIVES: A number of recent studies dealing with the relationship between the effects of high body mass (BM) and fat mass (FM) on bone mass and strength exhibit a range of contrasting variations in their findings. These diverse findings have led to an ongoing controversy as to whether high BM and FM positively or negatively affect bone mass and strength. Excessive fat mass and the associated low-grade inflammation might overturn the higher mechanical stimulus arising from a higher body mass...
April 26, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28442244/automatic-high-resolution-infarct-detection-using-volumetric-multiphase-dual-energy-ct
#16
Veit Sandfort, Alan C Kwan, Comfort Elumogo, Davis M Vigneault, Rolf Symons, Amir Pourmorteza, Kelly Rice, Cynthia Davies-Venn, Mark A Ahlman, Chia-Ying Liu, Stefan L Zimmerman, David A Bluemke
OBJECTIVES: Late contrast enhancement CT (LCE-CT) visualizes the presence of myocardial infarcts. Differentiation of the contrast-enhanced infarct from blood pool is challenging. We developed a novel method using data from first pass CT angiography (CTA) imaging to enable automatic infarct detection. MATERIALS AND METHODS: A canine model of myocardial infarction was produced in 11 animals. Two months later, first pass CTA (90 kVp) and LCE-CT (dual energy 90 kVp/150 kVp tin filtered) were performed...
April 18, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28441766/fat-mass-is-positively-associated-with-estimated-hip-bone-strength-among-chinese-men-aged-50-years-and-above-with-low-levels-of-lean-mass
#17
Guiyuan Han, Yu-Ming Chen, Hua Huang, Zhanyong Chen, Lipeng Jing, Su-Mei Xiao
This study investigated the relationships of fat mass (FM) and lean mass (LM) with estimated hip bone strength in Chinese men aged 50-80 years (median value: 62.0 years). A cross-sectional study including 889 men was conducted in Guangzhou, China. Body composition and hip bone parameters were generated by dual-energy X-ray absorptiometry (DXA). The relationships of the LM index (LMI) and the FM index (FMI) with bone phenotypes were detected by generalised additive models and multiple linear regression. The associations between the FMI and the bone variables in LMI tertiles were further analysed...
April 24, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28440903/triple-doped-monolayer-graphene-with-boron-nitrogen-aluminum-silicon-phosphorus-and-sulfur
#18
Pablo Andres Denis, Saif Ullah, Fernando Sato
We have investigated the structure, stability, electronic properties and chemical reactivity of X/B/N triple doped graphene systems, X= Al, Si, P and S, by means of density functional periodic calculations. For the triple doped graphene (TDG) systems studied the dopants prefer to be bonded instead of separated. In general, the XNB pattern is preferred, with the exception of sulfur which favors the SBN motif. The introduction of a third dopant results in a negligible decrease of the cohesive energies with respect to their dual doped graphene (DDG) counterparts...
April 25, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28440784/dual-energy-ct-characteristics-of-colon-and-rectal-cancer-allows-differentiation-from-stool-by-dual-source-ct
#19
İlknur Özdeniz, İlkay S İdilman, Seyfettin Köklü, Erhan Hamaloğlu, Mustafa Özmen, Deniz Akata, Muşturay Karçaaltıncaba
PURPOSE: We aimed to determine dual-energy computed tomography (DECT) characteristics of colorectal cancer and investigate effectiveness of DECT method in differentiating tumor from stool in patients with colorectal cancer. METHODS: Fifty consecutive patients with colorectal tumors were enrolled. Staging was performed by DECT (80-140 kV) using dual-source CT after rectal air insufflation and without bowel preparation. Both visual and quantitative analyses were performed at 80 kV and 140 kV, on iodine map and virtual noncontrast (VNC) images...
April 25, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28440226/calibration-phantoms-for-accurate-water-and-lipid-density-quantification-using-dual-energy-mammography
#20
Hyo-Min Cho, Huanjun Ding, Nikita Kumar, David Sennung, Sabee Molloi
The aim of this study is to investigate the feasibility of water and lipid as calibration phantoms for accurate dual energy breast density quantification. Dual energy calibration was performed on a mammography system based on scanning multi-slit Si strip photon-counting detectors using plastic water and adipose-equivalent phantoms as the basis materials. Two different methods were used to convert the dual energy decomposition measurements in plastic phantom thicknesses into the true water and lipid basis materials...
April 25, 2017: Physics in Medicine and Biology
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