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https://www.readbyqxmd.com/read/28102979/changes-in-salivary-cortisol-during-psychotherapy-for-posttraumatic-stress-disorder-a-pilot-study-in-30-veterans
#1
Sheila A M Rauch, Anthony P King, Israel Liberzon, Rebecca K Sripada
BACKGROUND: Convergent evidence suggests that the hypothalamic-pituitary-adrenal (HPA) axis is disrupted in posttraumatic stress disorder (PTSD) and that HPA axis normalization may be associated with symptom improvement. Thus, the current study was designed to test the association between HPA axis reactivity and treatment response in psychotherapy for PTSD. METHODS: Thirty returning veterans with DSM-IV-TR PTSD were randomly assigned to receive 10 sessions of prolonged exposure therapy or present-centered therapy as part of a previously published randomized clinical trial (2008-2010)...
January 17, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28102957/rf-safety-assessment-of-a-bilateral-four-channel-transmit-receive-7-tesla-breast-coil-sar-versus-tissue-temperature-limits
#2
Thomas M Fiedler, Mark E Ladd, Andreas K Bitz
PURPOSE: The purpose of this work was to perform an RF safety evaluation for a bilateral four-channel transmit/receive breast coil and to determine the maximum permissible input power for which RF exposure of the subject stays within recommended limits. The safety evaluation was done based on SAR as well as on temperature simulations. In comparison to SAR, temperature is more directly correlated with tissue damage, which allows a more precise safety assessment. The temperature simulations were performed by applying three different blood perfusion models as well as two different ambient temperatures...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28102928/reduction-in-colposcopy-workload-and-associated-clinical-activity-following-hpv-catch-up-vaccination-programme-in-scotland-an-ecological-study
#3
M E Cruickshank, J Pan, S C Cotton, K Kavanagh, C Robertson, K Cuschieri, H Cubie, T Palmer, K G Pollock
OBJECTIVE: To measure patterns of clinical activity at colposcopy before and after vaccinated women entered the Scottish Cervical Screening Programme (SCSP). DESIGN: Population-based observational study using nationally collected data. SETTING: Scottish colposcopy clinics. SAMPLE: All women with a date of birth on or after 1 January 1985 who attended colposcopy in Scotland between 2008-2014. METHODS: Routinely collected data from the Scottish National Colposcopy Clinical Information Audit System (NCCIAS) was extracted, including: referral criteria, referral cervical cytology, colposcopic findings, clinical procedures and histology results...
January 19, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28102887/clinical-trial-of-nintedanib-in-patients-with-recurrent-or-metastatic-salivary-gland-cancer-of-the-head-and-neck-a-multicenter-phase-2-study-korean-cancer-study-group-hn14-01
#4
Youjin Kim, Su Jin Lee, Ji Yun Lee, Se-Hoon Lee, Jong-Mu Sun, Keunchil Park, Ho Jung An, Jae Yong Cho, Eun Joo Kang, Ha-Young Lee, Jinsoo Kim, Bhumsuk Keam, Hye Ryun Kim, Kyoung Eun Lee, Moon Young Choi, Ki Hyeong Lee, Myung-Ju Ahn
BACKGROUND: Salivary gland cancers (SGCs) are uncommon and account for less than 5% of all head and neck cancers, but they are histologically heterogeneous. No specific therapy, including targeted agents, has consistently improved clinical outcomes in recurrent/metastatic SGC. Recent studies suggest that vascular endothelial growth factor receptor (VEGFR) and platelet-derived growth factor receptor (PDGFR) play important roles in SGC. Nintedanib is a potent small-molecule, triple-receptor tyrosine kinase inhibitor (VEGFR1, VEGFR2, and VEGFR3; fibroblast growth factor receptor 1 [FGFR1], FGFR2, and FGFR3; and PDGFRα and PDGFRß)...
January 19, 2017: Cancer
https://www.readbyqxmd.com/read/28102829/absorbed-dose-evaluation-of-auger-electron-emitting-radionuclides-impact-of-input-decay-spectra-on-dose-point-kernels-and-s-values
#5
Nadia Falzone, Boon Lee, José Fernández-Varea, Christiana Kartsonaki, Andrew Stuchbery, Tibor Kibedi, Katherine Vallis
AIM: The aim of this study was to investigate the impact of decay data provided by the newly developed stochastic atomic relaxation model <i>BrIccEmis</i> on dose point kernels (DPKs- radial dose distribution around a unit point source) and <i>S</i>-values (absorbed dose per unit cumulated activity) of 14 Auger electron (AE) emitting radionuclides, namely <sup>67</sup>Ga, <sup>80m</sup>Br, <sup>89</sup>Zr, <sup>90</sup>Nb, <sup>99m</sup>Tc, <sup>111</sup>In, <sup>117m</sup>Sn, <sup>119</sup>Sb, <sup>123</sup>I, <sup>124</sup>I, <sup>125</sup>I, <sup>135</sup>La, <sup>195m</sup>Pt and <sup>201</sup>Tl...
January 19, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28102790/an-adaptable-instrument-and-method-for-exploring-care-and-compassion
#6
Roger Newham, Louise Terry
Background Narratives, particularly when visual and auditory elements are added to words, reveal more about cultures and behaviours, including those present in professional and service settings. Discourse analysis (DA) enables researchers to explicate meanings and understandings linking culture and behaviour. Aim To explain the development of a DA instrument and method for a research study of caring and compassion as expressed in different media. Discussion The DA instrument assisted in systematic and multi-modal data analysis by several researchers from different countries and backgrounds...
January 23, 2017: Nurse Researcher
https://www.readbyqxmd.com/read/28102773/the-optimal-duration-of-anticoagulant-therapy-after-unprovoked-venous-thromboembolism-still-a-challenging-issue
#7
Giovanna Elmi, Giuseppe Di Pasquale, Raffaele Pesavento
As about 50 % of patients with unprovoked venous thromboembolism (VTE) will develop new episodes after discontinuing therapy, indefinite treatment is suggested in patients with low or moderate bleeding risk. Baseline and post-baseline factors can help clinicians to identify patients at high risk of recurrence, who require extended treatment. Residual vein obstruction and D-dimer assay have been shown to be suitable methods for assessing the risk of VTE recurrences after a first unprovoked VTE. In treatment for VTE the use of direct oral anticoagulants (DOAC) is growing instead of the standard adjusted dose of vitamin K antagonists...
January 19, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/28102741/tutorial-on-biostatistics-linear-regression-analysis-of-continuous-correlated-eye-data
#8
Gui-Shuang Ying, Maureen G Maguire, Robert Glynn, Bernard Rosner
PURPOSE: To describe and demonstrate appropriate linear regression methods for analyzing correlated continuous eye data. METHODS: We describe several approaches to regression analysis involving both eyes, including mixed effects and marginal models under various covariance structures to account for inter-eye correlation. We demonstrate, with SAS statistical software, applications in a study comparing baseline refractive error between one eye with choroidal neovascularization (CNV) and the unaffected fellow eye, and in a study determining factors associated with visual field in the elderly...
January 19, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28102596/delineation-of-ehlers-danlos-syndrome-phenotype-due-to-the-c-934c-t-p-arg312cys-mutation-in-col1a1-report-on-a-three-generation-family-without-cardiovascular-events-and-literature-review
#9
Marina Colombi, Chiara Dordoni, Marina Venturini, Arianna Zanca, Piergiacomo Calzavara-Pinton, Marco Ritelli
Classical Ehlers-Danlos syndrome (cEDS) is a rare connective tissue disorder primarily characterized by hyperextensible skin, defective wound healing, abnormal scars, easy bruising, and generalized joint hypermobility; arterial dissections are rarely observed. Mutations in COL5A1 and COL5A2 encoding type V collagen account for more than 90% of the patients so far characterized. In addition, cEDS phenotype was reported in a small number of patients carrying the c.934C>T mutation in COL1A1 that results in an uncommon substitution of a non-glycine residue in one Gly-Xaa-Yaa repeat of the pro-α1(I)-chain p...
February 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28102575/bcl-2-family-in-non-small-cell-lung-cancer-its-prognostic-and-therapeutic-implications
#10
Ping-Li Sun, Hironobu Sasano, Hongwen Gao
Non-small cell lung cancer (NSCLC) accounts for approximately 85% of all lung cancers. Despite significant advances in its research of tumor biology and therapy, the prognosis for this neoplasm has still remained poor. The great majority of anticancer agents, regardless of their mechanisms of action, exert their lethal actions on cancer cells by inducing apoptosis following drug-induced cellular damage. Many reported studies have evaluated the prognostic and therapeutic implications of apoptosis in lung cancer, but their exact clinical value has remained unclear...
January 19, 2017: Pathology International
https://www.readbyqxmd.com/read/28102563/multiscale-modeling-methods-in-biomechanics
#11
REVIEW
Pinaki Bhattacharya, Marco Viceconti
More and more frequently, computational biomechanics deals with problems where the portion of physical reality to be modeled spans over such a large range of spatial and temporal dimensions, that it is impossible to represent it as a single space-time continuum. We are forced to consider multiple space-time continua, each representing the phenomenon of interest at a characteristic space-time scale. Multiscale models describe a complex process across multiple scales, and account for how quantities transform as we move from one scale to another...
January 19, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28102550/accounting-for-competing-risks-in-randomized-controlled-trials-a-review-and-recommendations-for-improvement
#12
Peter C Austin, Jason P Fine
In studies with survival or time-to-event outcomes, a competing risk is an event whose occurrence precludes the occurrence of the primary event of interest. Specialized statistical methods must be used to analyze survival data in the presence of competing risks. We conducted a review of randomized controlled trials with survival outcomes that were published in high-impact general medical journals. Of 40 studies that we identified, 31 (77.5%) were potentially susceptible to competing risks. However, in the majority of these studies, the potential presence of competing risks was not accounted for in the statistical analyses that were described...
January 19, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28102500/rates-and-predictors-of-caesarean-section-for-first-and-second-births-a-prospective-cohort-of-australian-women
#13
Alexis Hure, Jennifer Powers, Catherine Chojenta, Deborah Loxton
Objective To determine rates of vaginal delivery, emergency caesarean section, and elective caesarean section for first and second births in Australia, and to identify maternal predictors of caesarean section. Methods Data were from the Australian Longitudinal Study on Women's Health. A total of 5275 women aged 18-38 years, who had given birth to their first child between 1996 and 2012 were included; 75.0% (n = 3956) had delivered a second child. Mode of delivery for first and second singleton birth(s) was obtained from longitudinal survey data...
January 19, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28102490/genome-engineering-of-stem-cell-organoids-for-disease-modeling
#14
REVIEW
Yingmin Sun, Qiurong Ding
Precision medicine emerges as a new approach that takes into account individual variability. Successful realization of precision medicine requires disease models that are able to incorporate personalized disease information and recapitulate disease development processes at the molecular, cellular and organ levels. With recent development in stem cell field, a variety of tissue organoids can be derived from patient specific pluripotent stem cells and adult stem cells. In combination with the state-of-the-art genome editing tools, organoids can be further engineered to mimic disease-relevant genetic and epigenetic status of a patient...
January 19, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28102430/innate-and-intrinsic-antiviral-immunity-in-drosophila
#15
REVIEW
Assel Mussabekova, Laurent Daeffler, Jean-Luc Imler
The fruit fly Drosophila melanogaster has been a valuable model to investigate the genetic mechanisms of innate immunity. Initially focused on the resistance to bacteria and fungi, these studies have been extended to include antiviral immunity over the last decade. Like all living organisms, insects are continually exposed to viruses and have developed efficient defense mechanisms. We review here our current understanding on antiviral host defense in fruit flies. A major antiviral defense in Drosophila is RNA interference, in particular the small interfering (si) RNA pathway...
January 19, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28102384/predicting-point-defect-equilibria-across-oxide-hetero-interfaces-model-system-of-zro2-cr2o3
#16
Jing Yang, Mostafa Youssef, Bilge Yildiz
We present a multi-scale approach to predict equilibrium defect concentrations across oxide/oxide hetero-interfaces. There are three factors that need to be taken into account simultaneously for computing defect redistribution around the hetero-interfaces: the variation of local bonding environment at the interface as epitomized in defect segregation energies, the band offset at the interface, and the equilibration of the chemical potentials of species and electrons via ionic and electronic drift-diffusion fluxes...
January 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28102361/effectiveness-and-tolerability-of-different-recommended-doses-of-ppis-and-h2ras-in-gerd-network-meta-analysis-and-grade-system
#17
Chao Zhang, Joey S W Kwong, Rui-Xia Yuan, Hao Chen, Chang Xu, Yi-Pin Wang, Gong-Li Yang, Jin-Zhu Yan, Le Peng, Xian-Tao Zeng, Hong Weng, Jie Luo, Yu-Ming Niu
Proton pump inhibitors (PPIs) and histamine-2-receptor antagonists (H2RAs) are used for gastro-esophageal reflux disease (GERD); however, the clinical evidence for treatment is poor. We evaluated the effectiveness and tolerability of different doses of PPIs, H2RAs and placebo in adults with GERD. Six online databases were searched through September 1, 2016. All related articles were included and combined with a Bayesian network meta-analysis from randomized controlled trials (RCTs). The GRADE systems were employed to assess the main outcome...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102358/model-for-large-area-monolayer-coverage-of-polystyrene-nanospheres-by-spin-coating
#18
Abhishek Chandramohan, Nikolai V Sibirev, Vladimir G Dubrovskii, Michael C Petty, Andrew J Gallant, Dagou A Zeze
Nanosphere lithography, an inexpensive and high throughput technique capable of producing nanostructure (below 100 nm feature size) arrays, relies on the formation of a monolayer of self-assembled nanospheres, followed by custom-etching to produce nanometre size features on large-area substrates. A theoretical model underpinning the self-ordering process by centrifugation is proposed to describe the interplay between the spin speed and solution concentration. The model describes the deposition of a dense and uniform monolayer by the implicit contribution of gravity, centrifugal force and surface tension, which can be accounted for using only the spin speed and the solid/liquid volume ratio...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102232/aetiology-and-management-of-hereditary-aortopathy
#19
REVIEW
Aline Verstraeten, Ilse Luyckx, Bart Loeys
Aortic aneurysms are a major health problem because they account for 1-2% of all deaths in the Western population. Although abdominal aortic aneurysms (AAAs) are more prevalent than thoracic aortic aneurysms (TAAs), TAAs have been more exhaustively studied over the past 2 decades because they have a higher heritability and affect younger individuals. Gene identification in both syndromic and nonsyndromic TAA is proceeding at a rapid pace and has already pinpointed >20 genes associated with familial TAA risk...
January 19, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28102179/a-2-d-suspension-of-active-agents-the-role-of-fluid-mediated-interactions
#20
Hojjat Behmadi, Zahra Fazli, Ali Najafi
Taking into account both the Vicsek short range ordering and the far-field hydrodynamic interactions mediated by the ambient fluid, we investigate the role of long range interactions in the ordering phenomena in a quasi 2-dimensional active suspension. By studying the number fluctuations, the velocity correlation functions and cluster size distribution function, we show that depending on the number density of swimmers and the strength of noise, the hydrodynamic interactions can have significant effects in a suspension...
January 19, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
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