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https://www.readbyqxmd.com/read/28648006/-0-5-gy-x-ray-radiation-promotes-osteoblast-differentiation-by-wnt-%C3%AE-catenin-signaling
#1
M Chen, Q R Dong, Q Huang, C She, W Xu
Objective: To investigate the important roles of Wnt signaling in the processes of 0.5Gy X-ray promoting osteoblast differentiation, and make clear the molecular mechanisms involved. Methods: Flow cytometry was employed to detect the apoptosis after osteoblast exposure to 0.5 Gy X-ray radiation.The protein level of osteoblast differentiation markers, such as collagen Iα (Col1α), alkaline phosphatase (ALP), osteocalcin (OCN), were detected by Western-blot and ALP activity staining was performed. Real-time PCR and Western-blot were utilized to evaluate the variations of key factors in Wnt signaling pathways, while specific inhibitor of Wnt/β-Catenin, XAV939 was used to block the Wnt signaling...
June 20, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28647989/-accuracy-of-ct-colonography-for-the-detection-of-colorectal-neoplasm-a-subgroup-meta-analysis
#2
H H Yu, H Y Huang, Y S Jiang, C Zhu, C G Guo, M Dai, X J Xing, J F Shi
Objective: To assess the accuracy of computed tomographic colonography (CTC) for detection of colorectal neoplasm. Methods: Publications prior to January 2016 from the Medline, Embase, CNKI, WANFANG, and VIP literature databases were systematically reviewed. A QUADAS checklist was used to assess the quality of the studies. According to the sizes of tumor (≥6 mm or ≥10 mm), diagnostic test accuracy indexes (area under the curve, sensitivity and specific) were pooled and stratified. Spearman correlation and curve of summary receiver operating characteristic (SROC) were applied to comprehensively assess the threshold effect...
June 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28647928/pre-procedural-ultrasonography-for-tracheostomy-in-critically-ill-patients-a-prospective-study
#3
Ella Even-Tov, Itzhak Koifman, Vladimir Rozentsvaig, Leonid Livshits, Peter Gilbey
BACKGROUND: Percutaneous dilatational tracheostomy (PDT) has become a standard technique for critically ill patients who require long-term ventilation. The most common early post-operative complication is bleeding related to anatomical variation in vasculature. The procedure is performed at the patient's bedside unless this is deemed unsafe and then the accepted alternative is open tracheostomy in the operating room. OBJECTIVES: To evaluate the use of pre-procedural ultrasound to aid in the decision of whether PDT in critical care patients should be performed at the patient's bedside or by open surgical tracheostomy...
June 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28647918/designing-future-clinical-trials-in-heart-failure-with-preserved-ejection-fraction-lessons-from-topcat
#4
REVIEW
Ravi B Patel, Sanjiv J Shah, Gregg C Fonarow, Javed Butler, Muthiah Vaduganathan
PURPOSE OF REVIEW: Spironolactone did not demonstrate benefit with respect to the primary composite endpoint in the global TOPCAT (Treatment of Preserved Cardiac Function Heart Failure with an Aldosterone Antagonist) trial in patients with chronic heart failure with preserved ejection fraction (HFpEF). We identify key lessons from the TOPCAT experience that can be applied to future HFpEF trials. RECENT FINDINGS: Subsequent analyses of TOPCAT have revealed marked regional heterogeneity in patient profiles, event rates, drug adherence, and treatment effects...
June 24, 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28647916/impact-of-site-selection-and-study-conduct-on-outcomes-in-global-clinical-trials
#5
REVIEW
Chaudhry M S Sarwar, Muthiah Vaduganathan, Javed Butler
PURPOSE OF REVIEW: There are over 25 million patients living with heart failure globally. Overall, and especially post-discharge, clinical outcomes have remained poor in heart failure despite multiple trials, with both successes and failures over the last two decades. Matching therapies to the right patient population, identifying high-quality sites, and ensuring optimal trial design and execution represent important considerations in the development of novel therapeutics in this space...
June 24, 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28647904/a-cost-precision-model-for-marine-environmental-monitoring-based-on-time-integrated-averages
#6
Ulf Båmstedt, Sonia Brugel
Ongoing marine monitoring programs are seldom designed to detect changes in the environment between different years, mainly due to the high number of samples required for a sufficient statistical precision. We here show that pooling over time (time integration) of seasonal measurements provides an efficient method of reducing variability, thereby improving the precision and power in detecting inter-annual differences. Such data from weekly environmental sensor profiles at 21 stations in the northern Bothnian Sea was used in a cost-precision spatio-temporal allocation model...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28647883/casper-computer-aided-segmentation-of-imperceptible-motion-a-learning-based-tracking-of-an-invisible-needle-in-ultrasound
#7
Parmida Beigi, Robert Rohling, Septimiu E Salcudean, Gary C Ng
PURPOSE: This paper presents a new micro-motion-based approach to track a needle in ultrasound images captured by a handheld transducer. METHODS: We propose a novel learning-based framework to track a handheld needle by detecting microscale variations of motion dynamics over time. The current state of the art on using motion analysis for needle detection uses absolute motion and hence work well only when the transducer is static. We have introduced and evaluated novel spatiotemporal and spectral features, obtained from the phase image, in a self-supervised tracking framework to improve the detection accuracy in the subsequent frames using incremental training...
June 24, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28647877/volatile-organic-compounds-vocs-during-non-haze-and-haze-days-in-shanghai-characterization-and-secondary-organic-aerosol-soa-formation
#8
Deming Han, Zhen Wang, Jinping Cheng, Qian Wang, Xiaojia Chen, Heling Wang
To better understand the characterization and secondary organic aerosol (SOA) formation of volatile organic compounds (VOCs) during non-haze and haze days, ambient VOCs were continuously measured by a vehicle-mounted online thermal desorption system coupled with a gas chromatography-mass spectrometry (TD-GC/MS) system in Shanghai, China. The average concentrations of VOCs in haze episodes (193.2 μg m(-3)) were almost 50% higher than in non-haze periods (130.8 μg m(-3)). VOC concentrations exhibited a bi-modal pattern in the morning and evening rush hour periods on both non-haze and haze days...
June 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28647862/investigating-the-relationship-between-costs-and-outcomes-for-english-mental-health-providers-a-bi-variate-multi-level-regression-analysis
#9
Valerie Moran, Rowena Jacobs
Provider payment systems for mental health care that incentivize cost control and quality improvement have been a policy focus in a number of countries. In England, a new prospective provider payment system is being introduced to mental health that should encourage providers to control costs and improve outcomes. The aim of this research is to investigate the relationship between costs and outcomes to ascertain whether there is a trade-off between controlling costs and improving outcomes. The main data source is the Mental Health Minimum Data Set (MHMDS) for the years 2011/12 and 2012/13...
June 24, 2017: European Journal of Health Economics: HEPAC: Health Economics in Prevention and Care
https://www.readbyqxmd.com/read/28647832/genetic-dissection-of-adventitious-shoot-regeneration-in-roses-by-employing-genome-wide-association-studies
#10
Thi Hong Nhung Nguyen, Dietmar Schulz, Traud Winkelmann, Thomas Debener
We analysed the capacity to regenerate adventitious shoots in 96 rose genotypes and found 88 SNP markers associated with QTLs, some of which are derived from candidate genes for shoot regeneration. In an association panel of 96 rose genotypes previously analysed for petal colour, we conducted a genome-wide association study on the capacity of leaf petioles for direct shoot regeneration. Shoot regeneration rate and shoot ratio (number of shoots/total number of explants) were used as phenotypic descriptors for regeneration capacity...
June 24, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28647826/numerical-simulation-of-a-glucose-sensitive-composite-membrane-closed-loop-insulin-delivery-system
#11
Shashi Bajaj Mukherjee, Debabrata Datta, Soumyendu Raha, Debnath Pal
Closed-loop insulin delivery system works on pH modulation by gluconic acid production from glucose, which in turn allows regulation of insulin release across membrane. Typically, the concentration variation of gluconic acid can be numerically modeled by a set of non-linear, non-steady state reaction diffusion equations. Here, we report a simpler numerical approach to time and position dependent diffusivity of species using finite difference and differential quadrature (DQ) method. The results are comparable to that obtained by analytical method...
June 24, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28647806/pre-anesthetic-stroke-volume-variation-can-predict-cardiac-output-decrease-and-hypotension-during-induction-of-general-anesthesia
#12
Takashi Juri, Koichi Suehiro, Sayaka Tsujimoto, Shigemune Kuwata, Akira Mukai, Katsuaki Tanaka, Tokuhiro Yamada, Takashi Mori, Kiyonobu Nishikawa
This study aimed to assess the reliability of stroke volume variation (SVV) in predicting cardiac output (CO) decrease and hypotension during induction of general anesthesia. Forty-five patients undergoing abdominal surgery under general anesthesia were enrolled. Before induction of anesthesia, patients were required to maintain deep breathing (6-8 times/min), and pre-anesthetic SVV was measured for 1 min by electrical cardiometry. General anesthesia was induced with propofol, remifentanil, rocuronium, and sevoflurane...
June 24, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28647756/role-of-coronal-high-resolution-diffusion-weighted-imaging-in-acute-optic-neuritis-a-comparison-with-axial-orientation
#13
Ping Lu, Yan Sha, Hailin Wan, Feng Wang, Guohong Tian
PURPOSE: Through a comparison with the axial orientation, we aimed to evaluate the role of coronal high-resolution diffusion-weighted imaging (DWI) in acute optic neuritis based on diagnostic accuracy and the reproducibility of apparent diffusion coefficient (ADC) measurements. METHODS: Orbital DWI, using readout-segmented, parallel imaging, and 2D navigator-based reacquisition (RESOLVE-DWI), was performed on 49 patients with acute vision loss. The coronal (thickness = 3 mm) and axial (thickness = 2 mm) diffusion images were evaluated by two neuroradiologists retrospectively...
June 24, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28647755/namib-desert-soil-microbial-community-diversity-assembly-and-function-along-a-natural-xeric-gradient
#14
Vincent Scola, Jean-Baptiste Ramond, Aline Frossard, Olivier Zablocki, Evelien M Adriaenssens, Riegardt M Johnson, Mary Seely, Don A Cowan
The hyperarid Namib desert is a coastal desert in southwestern Africa and one of the oldest and driest deserts on the planet. It is characterized by a west/east increasing precipitation gradient and by regular coastal fog events (extending up to 75 km inland) that can also provide soil moisture. In this study, we evaluated the role of this natural aridity and xeric gradient on edaphic microbial community structure and function in the Namib desert. A total of 80 individual soil samples were collected at 10-km intervals along a 190-km transect from the fog-dominated western coastal region to the eastern desert boundary...
June 24, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28647735/uniparental-disomy-of-chromosome-15-in-two-cases-by-chromosome-microarray-a-lesson-worth-thinking
#15
Shu Liu, Kaihui Zhang, Fengling Song, Yali Yang, Yuqiang Lv, Min Gao, Yi Liu, Zhongtao Gai
Prader-Willi syndrome (PWS) and Angelman syndrome (AS) are neurogenetic disorders caused by loss of function of the imprinted genes at 15q11q13. A 5-7 Mb paternal/maternal deletion of chromosomal region 15q11.2q13 is the major genetic cause of PWS/AS, but in a small group of patients, the PWS/AS phenotype can result from maternal/paternal uniparental disomy (UPD) of chromosome 15. Various mechanisms leading to UPD include gametic complementation, trisomy rescue, and compensatory UPD, which can be inferred from the pattern of uniparental heterodisomy (heteroUPD) or uniparental isodisomy (isoUPD)...
June 24, 2017: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/28647725/percutaneous-coronary-intervention-patients-and-cardiologists-experiences-of-the-informed-consent-process-in-northern-england-a-qualitative-study
#16
Joy Probyn, Joanne Greenhalgh, Janet Holt, Dwayne Conway, Felicity Astin
OBJECTIVE: Informed consent is central to ethical medical practice, but little is known about how the process takes place in clinical practice. Percutaneous coronary intervention (PCI) is a common revascularisation procedure. Studies report that patients overestimate benefits, forget the risks and are unaware of alternative treatments. The aim of this study was to describe PCI patients' and cardiologists' experiences of the informed consent process in acute care settings. DESIGN/SETTING/PARTICIPANTS: A qualitative study with a maximum variation sample of elective and acute PCI patients and cardiologists taking their consent, recruited from a district general hospital and tertiary centre...
June 24, 2017: BMJ Open
https://www.readbyqxmd.com/read/28647673/constitutive-differences-in-glucocorticoid-responsiveness-to-stress-are-related-to-variation-in-aggression-and-anxiety-related-behaviors
#17
Sophie E Walker, Olivia Zanoletti, Isabelle Guillot de Suduiraut, Carmen Sandi
Glucocorticoids coordinate responses that enable an individual to cope with stressful challenges and, additionally, mediate adaptation following cessation of a stressor. There are important individual differences in the magnitude of glucocorticoid responsiveness to stressors. However, whether individual differences in glucocorticoid responsiveness to stress are linked to different behavioral strategies in coping with social and non-social challenges is not easily studied, owing to the lack of appropriate animal models...
June 16, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28647599/pcr-sscp-analysis-of-mdgi-gene-and-its-association-with-milk-production-traits-in-river-buffalo-bubalus-bubalis
#18
P K Dubey, S Dubey, S K Mishra, R Arora, J Patel, K P Singh, P Kathiravan, B P Mishra, R S Kataria
In this study, we investigated the genetic variation within 3'UTR of Mammary-Derived Growth Inhibitor (MDGI) gene of buffalo using PCR-SSCP and sequencing; and also analyzed association of polymorphism with the milk production traits. The study revealed two conformational patterns, 'A' and 'B' among 234 Mehsana buffaloes maintained with their records in the field and at farm. The frequency of SSCP variant 'A' was found to be invariably high in the buffalo population under study. Further, association analysis of SSCP variants with various milk production and milk quality traits indicated no significant effect on any of the traits investigated...
June 12, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28647538/why-we-need-to-understand-service-variation-in-compulsion
#19
Jorun Rugkåsa
No abstract text is available yet for this article.
June 21, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28647537/variation-in-compulsory-psychiatric-inpatient-admission-in-england-a-cross-classified-multilevel-analysis
#20
Scott Weich, Orla McBride, Liz Twigg, Craig Duncan, Patrick Keown, David Crepaz-Keay, Eva Cyhlarova, Helen Parsons, Jan Scott, Kamaldeep Bhui
BACKGROUND: The increasing rate of compulsory admission to psychiatric inpatient beds in England is worrying. Studying variation between places and services could be key to identifying targets for interventions to reverse this trend. We modelled spatial variation in compulsory admissions in England using national patient-level data and quantified the extent to which patient, local-area, and service-setting characteristics accounted for this variation. METHODS: This study is a cross-sectional, multilevel analysis of the 2010-11 Mental Health Minimum Data Set (MHMDS)...
June 21, 2017: Lancet Psychiatry
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