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https://www.readbyqxmd.com/read/28454483/efficient-carrier-injection-transport-relaxation-and-recombination-associated-with-a-stronger-carrier-localization-and-a-low-polarization-effect-of-nonpolar-m-plane-ingan-gan-light-emitting-diodes
#1
Fann-Wei Yang, Yu-Siang You, Shih-Wei Feng
Based on time-resolved electroluminescence (TREL) measurement, more efficient carrier injection, transport, relaxation, and recombination associated with a stronger carrier localization and a low polarization effect in a nonpolar m-plane InGaN/GaN light emitting diode (m-LED), compared with those in a polar c-LED, are reported. With a higher applied voltage in the c-LED, decreasing response time and rising time improve device performance, but a longer recombination time degrades luminescence efficiency. By using an m-LED with a stronger carrier localization and a low polarization effect, shorter response, rising, and recombination times provide more efficient carrier injection, transport, relaxation, and recombination...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28454462/effects-of-irradiation-on-radioresistance-hotair-and-epithelial-mesenchymal-transition-cancer-stem-cell-marker-expression-in-esophageal-squamous-cell-carcinoma
#2
Chunli Da, Li Wu, Yuting Liu, Ruozheng Wang, Ruiguang Li
Radiotherapy is a common therapeutic strategy used to treat esophageal squamous cell carcinoma (ESCC). However, tumor cells often develop radioresistance, thereby reducing treatment efficacy. Here, we aimed to identify the mechanisms through which ESCC cells develop radioresistance and identify associated biomarkers. Eca109 cells were exposed to repeated radiation at 2 Gy/fraction for a total dose of 60 Gy (Eca109R60/2Gy cells). MTT and colony formation assays were performed to measure cell proliferation and compare the radiation biology parameters of Eca109 and Eca109R60/2Gy cells...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454459/expression-of-cxcl12-and-its-receptor-cxcr4-in-patients-with-adenomyosis
#3
Juan Li, Geping Yin, Ming Chen, Shujun Yang, Aifang Wu, Jing Liang, Zheng Yuan
The aim of the present study was to investigate the role of chemokine (C-X-C motif) ligand 12 (CXCL12) and its receptor, chemokine (C-X-C motif) receptor 4 (CXCR4) in the pathogenesis of adenomyosis (AD). Immunohistochemistry and reverse transcription-quantitative polymerase chain reaction analysis were used to measure the protein and mRNA expression of CXCL12 and CXCR4 in eutopic endometrial and ectopic foci tissue samples. Samples from a total of 36 patients with AD (study group) were compared with endometrial tissue samples from 33 patients who underwent uterine fibroids surgery (control group) during the same period...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454425/whole-body-low-dose-computed-tomography-in-multiple-myeloma-staging-superior-diagnostic-performance-in-the-detection-of-bone-lesions-vertebral-compression-fractures-rib-fractures-and-extraskeletal-findings-compared-to-radiography-with-similar-radiation-exposure
#4
Lukas Lambert, Petr Ourednicek, Zuzana Meckova, Giampaolo Gavelli, Jan Straub, Ivan Spicka
The primary objective of the present prospective study was to compare the diagnostic performance of conventional radiography (CR) and whole-body low-dose computed tomography (WBLDCT) with a comparable radiation dose reconstructed using hybrid iterative reconstruction technique, in terms of the detection of bone lesions, skeletal fractures, vertebral compressions and extraskeletal findings. The secondary objective was to evaluate lesion attenuation in relation to its size. A total of 74 patients underwent same-day skeletal survey by CR and WBLDCT...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454422/the-role-of-mrp1-in-the-multidrug-resistance-of-colorectal-cancer
#5
Dongxing Cao, Shaolan Qin, Yifei Mu, Ming Zhong
The role of multidrug resistance associated protein 1 (MRP1) in the multidrug resistance (MDR) of colorectal cancer (CRC) remains unclear. The present study aimed to investigate the effect of MRP1 in MDR CRC and its therapeutic potential for the treatment of patients with this disease. The human MDR CRC cell lines HCT-8 and Colo205 were established through stable exposure to 5-florouracil (5-FU) over a 5-month period. MRP1 was knocked-down in MDR CRC cells through the transfection of short hairpin RNA targeting MRP1 (shMRP1)...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454403/mir-22-promotes-apoptosis-of-osteosarcoma-cells-via-inducing-cell-cycle-arrest
#6
Pengzhou Gai, Hongliang Sun, Guangda Wang, Qiang Xu, Xiaojun Qi, Zuofu Zhang, Lei Jiang
To study the effects of miR-22 on the proliferation and the apoptosis of osteosarcoma MG-63 cell line and to explore the potential molecular mechanism that miR-22 regulates this biological process. Quantitive real-time polymerase chain reaction (RT-qPCR) was performed to explore the miRNA level of miR-22. The MG-63 cell line was infected with miR-22 mimics for establishment of miR-22 overexpression. Non-infected cells were in blank group and cells infected with empty vector were served as negative control (NC group)...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454351/the-role-of-quercetin-and-vitamin-c-in-nrf2-dependent-oxidative-stress-production-in-breast-cancer-cells
#7
Zohreh Mostafavi-Pour, Fatemeh Ramezani, Fatemeh Keshavarzi, Nasser Samadi
The balance between the production and elimination of reactive oxygen species (ROS) is essential in determining whether cells survive or undergo apoptosis. Nuclear factor erythroid 2-related factor 2 (Nrf2) may act as a sensor for electrophilic stress, thus regulating the intracellular antioxidant response. The present study investigated the role of vitamin C (VC) and quercetin (Q) in the induction of Nrf2-mediated oxidative stress in cancer cells. An MTT assay was conducted to examine the anti-proliferative effects of VC and Q...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454255/mir-219-5p-suppresses-the-proliferation-and-invasion-of-colorectal-cancer-cells-by-targeting-calcyphosin
#8
Quhui Wang, Lirong Zhu, Yasu Jiang, Junfei Xu, Feiran Wang, Zhixian He
MicroRNAs (miRNAs) are small non-coding RNAs involved in an array of biological processes, and their dysregulation is associated with tumor development and progression. One such miRNA, miR-219-5p, is abnormally expressed in patients with colorectal cancer (CRC). In the present study, reverse transcription-quantitative polymerase chain reaction was performed to measure miR-219-5p expression in cells from both CRC tumors, and surrounding healthy tissue. MTT and invasion assays were used to determine the role of miR-219-5p in regulating CRC cell proliferation and invasion, respectively...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454251/laparoscopic-resection-of-a-sigmoid-colon-lipoma-in-a-young-female-patient-a-case-report-and-review-of-the-literature
#9
Georgios I Panagiotakis, Alexandros G Andreou, Ioannis E Petrakis, Maria Tzardi, Maria Daskalogiannaki, Georgios E Chalkiadakis
Lipomas of the sigmoid colon are rare entities. The present case describes a 27-year-old Caucasian woman who underwent a laparoscopic sigmoidectomy following the detection of a giant lipoma. The young patient was referred to the Emergency Department of the University Hospital of Heraklion (Crete, Greece) in May 2013 after experiencing intermittent abdominal cramping during defecation, and altering episodes of diarrhea and constipation. In addition, the patient described the protrusion of a solid tissue mass shaped like a 'champagne bottle cork' from the anus following defecation...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454169/speckle-based-hyperspectral-imaging-combining-multiple-scattering-and-compressive-sensing-in-nanowire-mats
#10
Rebecca French, Sylvain Gigan, Otto L Muskens
Encoding of spectral information onto monochrome imaging cameras is of interest for wavelength multiplexing and hyperspectral imaging applications. Here, the complex spatiospectral response of a disordered material is used to demonstrate retrieval of a number of discrete wavelengths over a wide spectral range. Strong, diffuse light scattering in a semiconductor nanowire mat is used to achieve a highly compact spectrometer of micrometer thickness, transforming different wavelengths into distinct speckle patterns with nanometer sensitivity...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28454077/comparison-of-ftir-atr-and-raman-spectroscopy-in-determination-of-vldl-triglycerides-in-blood-serum-with-pls-regression
#11
Adam Oleszko, Jadwiga Hartwich, Anna Wójtowicz, Marlena Gąsior-Głogowska, Hubert Huras, Małgorzata Komorowska
Hypertriglyceridemia, related with triglyceride (TG) in plasma above 1.7mmol/L is one of the cardiovascular risk factors. Very low density lipoproteins (VLDL) are the main TG carriers. Despite being time consuming, demanding well-qualified staff and expensive instrumentation, ultracentrifugation technique still remains the gold standard for the VLDL isolation. Therefore faster and simpler method of VLDL-TG determination is needed. Vibrational spectroscopy, including FT-IR and Raman, is widely used technique in lipid and protein research...
April 18, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28454055/evaluation-of-a-commercially-available-radioimmunoassay-and-enzyme-immunoassay-for-the-analysis-of-progesterone-and-estradiol-and-the-comparison-of-two-extraction-efficiency-methods
#12
C S Skenandore, A Pineda, J M Bahr, A E Newell-Fugate, F C Cardoso
The measurement of progesterone (P4) and estradiol (E2) is essential for monitoring reproductive cycles and can aid in diagnosing the cause of poor reproductive performance in dairy cattle. Readily available, reproducible, accurate, non-radioactive assays are needed for the assessment of P4 and E2 in bovine serum. The gold standard for hormone assessment, radioimmunoassay (RIA), was compared with enzyme-linked immunoassay (EIA). Serum collected from various points in the estrous cycle was extracted with radiolabeled P4 (ie, (3)H-P4; HE) and without (3)H-P4 (CE) before being used in the assay...
April 5, 2017: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/28454038/long-term-variations-measurement-of-electromagnetic-field-exposures-in-alcal%C3%A3-de-henares-spain
#13
R Sánchez-Montero, C Alén-Cordero, P L López-Espí, J M Rigelsford, F Aguilera-Benavente, J Alpuente-Hermosilla
Electromagnetic radiowave exposure is a major concern in most countries due to possible adverse health effects. Over the last 10years, many technological changes (digital television, mobile technologies, wireless networks…) have led to variations in the electromagnetic field (EMF) levels. A large number of studies devoted to the analysis of EMF levels with personal dosimeters or computer models of the exposure of mobile stations have been conducted. However, the study of the exposure values, taking into account all the existing sources, and their evolution in a wide area, using measurements, has rarely been performed...
April 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28454030/pesticide-impact-study-in-the-peri-urban-horticultural-area-of-gran-la-plata-argentina
#14
Tomás M Mac Loughlin, Leticia Peluso, Damián J G Marino
Vegetable production systems are characterized by intense pesticide use, yet the effects on the surrounding environment are largely unknown and need to be studied. Given this knowledge gap, the objective of this work is to determine the impact of horticulture on a representative watercourse by conducting an integrated study of the occurrence and concentration of pesticides in bottom sediments and their relation to lethal and sublethal effects on benthic fauna. Two sampling campaigns were conducted during seasons of low and high pesticide application in five sites along the Carnaval creek, located in the peri-urban area of La Plata City (Buenos Aires, Argentina)...
April 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28453899/blood-flow-after-contraction-and-cuff-occlusion-is-reduced-in-subjects-with-muscle-soreness-after-eccentric-exercise
#15
Eduardo Souza-Silva, Steffan Wittrup Christensen, Rogerio Pessoto Hirata, Ryan Godsk Larsen, Thomas Graven-Nielsen
PURPOSE: Delayed onset muscle soreness (DOMS) occur within 1-2 days after eccentric exercise but the mechanism mediating hypersensitivity is unclear. This study hypothesized that eccentric exercise reduces the blood flow response following muscle contractions and cuff occlusion, which may result in accumulated algesic substances being a part of the sensitization in DOMS. METHODS: Twelve healthy subjects (5 women) performed dorsiflexion exercise (5 sets of 10 repeated eccentric contractions) in one leg, while the contralateral leg was the control...
April 28, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28453898/electrophysiological-effects-of-anthracyclines-in-adult-survivors-of-pediatric-malignancy
#16
Timothy M Markman, Kathryn Ruble, David Loeb, Allen Chen, Yiyi Zhang, Gary S Beasley, W Reid Thompson, Saman Nazarian
BACKGROUND: Anthracycline use is limited by cardiotoxicity, including arrhythmias and left ventricular (LV) dysfunction. We aim to characterize the association between electrophysiological changes and LV dysfunction. METHODS: A retrospective chart review was conducted, including all 147 pediatric cancer survivors at our institution over 18 years of age and treated with an anthracycline. One hundred thirty-four patients who had at least one electrocardiogram (ECG) and echocardiogram were analyzed...
April 28, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28453882/the-validity-of-the-observed-to-expected-lung-to-head-ratio-in-congenital-diaphragmatic-hernia-in-an-era-of-standardized-neonatal-treatment-a-multicenter-study
#17
Kitty G Snoek, Nina C J Peters, Joost van Rosmalen, Arno F J van Heijst, Alex J Eggink, Esther Sikkel, René M Wijnen, Hanneke IJsselstijn, Titia E Cohen-Overbeek, Dick Tibboel
OBJECTIVE: To assess the predictive value of observed-to-expected lung-to-head ratio (O/E LHR) for survival and chronic lung disease (CLD) in survivors of left-sided congenital diaphragmatic hernia (CDH) in an era of standardized neonatal treatment, and to evaluate the predictive value of the O/E LHR trajectory for survival. METHODS: This retrospective cohort study was performed in two high-volume CDH centers in the Netherlands in prenatally detected, isolated left-sided CDH patients born between 2008-2014...
April 28, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28453868/combined-aerobic-and-resistance-training-decreases-inflammation-markers-in-healthy-men
#18
J K Ihalainen, M Schumann, D Eklund, M Hämäläinen, E Moilanen, G Paulsen, K Häkkinen, A A Mero
BACKGROUND AND AIMS: Our primary aim was to study the effects of 24 weeks of combined aerobic and resistance training performed on the same day or on different days on inflammation markers. METHODS AND RESULTS: Physically active, healthy young men were randomly divided into three groups that performed: aerobic and resistance training consecutively in the same training session (SS) 2-3 d·wk(-1) or on alternating days (AD) 4-6 d·wk(-1) as well as control (C). The total training volume was matched in the training groups...
April 28, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28453824/professional-attitudes-toward-incident-reporting-can-we-measure-and-compare-improvements-in-patient-safety-culture
#19
Pierfrancesco Tricarico, Luigi Castriotta, Claudio Battistella, Fabrizio Bellomo, Giovanni Cattani, Lucrezia Grillone, Stefania Degan, Daniela De Corti, Silvio Brusaferro
Objective: To establish categories of professionals' attitudes toward incident reporting by analyzing the trends in incident reporting while accounting for general risk indicators. Design: The incident reporting system was evaluated over 6 years. Reporting rates, stratified by year and profession, were estimated using the non-mandatory reported events/full-time equivalent (NM-IR/FTE) rate. Other indicators were collected using the hospital's official database. Staff attitudes toward self-reporting were analyzed...
April 1, 2017: International Journal for Quality in Health Care
https://www.readbyqxmd.com/read/28453763/development-of-the-harvey-bradshaw-index-pro-hbi-pro-score-to-assess-endoscopic-disease-activity-in-crohn-s-disease
#20
Eran Zittan, Boyko Kabakchiev, Orlaith B Kelly, Raquel Milgrom, Geoffrey C Nguyen, Kenneth Croitoru, A Hillary Steinhart, Mark S Silverberg
Background: There is a need for better, less-invasive disease activity indices that provide a representative assessment of endoscopic disease activity. We developed a new clinical score that incorporates the Harvey-Bradshaw index [HBI] with modified patient-reported outcomes [PROp] and physician [clinician]-reported outcomes [PROc] and assessed its ability to measure endosopic disease activity in ileocolonic Crohn's disease [CD]. Methods: A cohort of 88 CD patients undergoing colonoscopy was accrued in a prospective fashion...
May 1, 2017: Journal of Crohn's & Colitis
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