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https://www.readbyqxmd.com/read/29165650/evaluation-of-1-25-dihydroxyvitamin-d3-pathway-in-patients-with-chronic-urticaria
#1
Rasoul Nasiri-Kalmarzi, Mohammad Abdi, Javad Hosseini, Erfan Babaei, Aram Mokarizadeh, Zakaria Vahabzadeh
BACKGROUND: Previous studies showed the role of vitamin D (Vit D) on the progression of chronic urticaria. To the best of our knowledge, there are no other results regarding the contribution of single nucleotide polymorphisms (SNPs) in the vitamin D receptor (VDR) and vitamin D binding protein (VDBP) genes in Chronic Urticaria (CU). AIM: In the present study, we investigated the Vit pathway and the association between VDR and VDBP gene polymorphisms and CU risk in Iranian population...
November 20, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/29165496/fluorescence-quenching-based-signal-amplification-on-immunochromatography-test-strips-for-dual-mode-sensing-of-two-biomarkers-of-breast-cancer
#2
Bo Zhang, Wenjuan Ma, Fuxin Li, Weichen Gao, Qian Zhao, Weipan Peng, Jiafang Piao, Xiaoli Wu, Hanjie Wang, Xiaoqun Gong, Jin Chang
Recently, immunochromatography test strips (ICTS) have been fully developed for point-of-care testing (POCT). However, the intrinsic limitations including non-quantitative detection of colloidal gold ICTS and low sensitivity of fluorescence ICTS (FICTS) significantly restrict their further application in clinical diagnosis. Taking advantages of rapid colorimetric qualitative detection and fluorescence quantitation, we designed a kind of sensitive and dual-mode magnetic FICTS (mFICTS) based on PLGA@Fe3O4 super-paramagnetic nanosphere (SPMN) probes quenching multiplex fluorescer on the test line through sandwich immunoreactions...
November 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/29165211/case-report-myiasis-due-to-cochliomyia-hominivorax-and-dermatobia-hominis-clinical-and-pathological-differences-between-two-species-in-northern-peru
#3
Virgilio E Failoc-Rojas, Carolina Molina-Ayasta, Jaime Salazar-Zuloeta, Abel Samamé, Heber Silva-Díaz
Infestations caused by fly larvae (Myiasis) have been observed in patients with risk factors and in tropical zones. The aim of our study was to describe the clinical and epidemiological aspects and the risk factors associated with the occurrence of obligatory myiasis, as well as the therapeutic approach to patients. We identified the cases of myiasis diagnosed in two referral hospitals in northern Peru from January 2012 to December 2015 and included patients in whom larval development and a compatible clinical profile were observed...
November 20, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29165121/association-of-asian-dust-with-daily-medical-consultations-for-pollinosis-in-fukuoka-city-japan
#4
Soyoko Sakata, Shoko Konishi, Chris Fook Sheng Ng, Reiko Kishikawa, Chiho Watanabe
BACKGROUND: The objective is to examine the association between AD and the daily number of medical consultations for pollinosis in Fukuoka City. METHODS: We analyzed 65,488 daily medical consultations for pollinosis from 4 clinics in Fukuoka City from February to April, 1989-2012. Time-series analyses were performed to estimate the clinic-specific relative risk (RR) of clinical pollinosis associated with AD, adjusting for airborne pollen, suspended particulate matter (SPM), meteorological and temporal factors...
April 4, 2017: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29164851/an-integrated-redox-cycling-for-electrochemical-enzymatic-signal-enhancement
#5
Md Rajibul Akanda, Huangxian Ju
Highly sensitive analytical methods for the detection of proteins are still an urgent demand in early medical diagnosis and discovery of biomarkers with ultralow abundance. Here an integrated electrochemical-chemical-enzymatic redox cycling is designed for significant enhancement of electrochemical enzymatic signal in biorecognition. This strategy efficiently utilizes the high specificity of outer-sphere to inner-sphere redox reaction to mediate the enzymatic redox cycling with the nonenzymatic redox cycling...
November 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29164641/five-criteria-for-using-a-surrogate-endpoint-to-predict-treatment-effect-based-on-data-from-multiple-previous-trials
#6
Stuart G Baker
A surrogate endpoint in a randomized clinical trial is an endpoint that occurs after randomization and before the true, clinically meaningful, endpoint that yields conclusions about the effect of treatment on true endpoint. A surrogate endpoint can accelerate the evaluation of new treatments but at the risk of misleading conclusions. Therefore, criteria are needed for deciding whether to use a surrogate endpoint in a new trial. For the meta-analytic setting of multiple previous trials, each with the same pair of surrogate and true endpoints, this article formulates 5 criteria for using a surrogate endpoint in a new trial to predict the effect of treatment on the true endpoint in the new trial...
November 21, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/29164601/clinical-decision-analysis-in-perinatology
#7
Rohan D'Souza, Prakesh S Shah, Beate Sander
Clinical decision-making in perinatology involves tradeoffs between two intricately related individuals - mother and fetus. Decision-making in perinatology is challenging due to competing interests of the mother and the fetus. Although decision analytic methods are increasingly used to develop processes for clinical and cost-effectiveness analyses in perinatology, there are no guidelines on the conduct and reporting of decision analysis studies that takes into account the complexities of the mother-fetus dyad...
November 21, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29164409/sun-exposure-and-behavioral-activation-for-hypovitaminosis-d-and-depression-a-controlled-pilot-study
#8
Justin Thomas, Fatme Al-Anouti
Several independent meta-analytic reviews suggest a relationship between vitamin D (VTD) deficiency and depressive symptoms. Theoretically, behavioural withdrawal (staying home, discontinuing outdoor activities etc.) is likely to exacerbate VTD deficiency. This pilot study assessed the efficacy of a modified form of behavioral therapy designed to simultaneously target VTD deficiency and depressive symptoms. College women (N = 114), all citizens of the United Arab Emirates, were screened for depressive symptoms and VTD deficiency...
November 21, 2017: Community Mental Health Journal
https://www.readbyqxmd.com/read/29164136/factors-associated-with-health-related-quality-of-life-among-hypertensive-patients-in-kathmandu-nepal
#9
Saruna Ghimire, Praful Pradhananga, Binaya Kumar Baral, Naveen Shrestha
Introduction: Nepal has a high prevalence of hypertension. While improving the overall health-related quality of life (HRQOL) is a central tenet to public health plans in developed nations, this focus has yet to be articulated in Nepal. Therefore, this study aims to identify the factors associated with HRQOL among hypertensive patients in Nepal. Method: The EuroQol-5Dimension HRQOL survey was administered to 180 hypertensive patients, attending the outpatient clinic at Shahid Gangalal National Heart Center in Kathmandu, Nepal...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29162871/allometric-scaling-of-skin-thickness-elasticity-viscoelasticity-to-mass-for-micro-medical-device-translation-from-mice-rats-rabbits-pigs-to-humans
#10
Jonathan C J Wei, Grant A Edwards, Darren J Martin, Han Huang, Michael L Crichton, Mark A F Kendall
Emerging micro-scale medical devices are showing promise, whether in delivering drugs or extracting diagnostic biomarkers from skin. In progressing these devices through animal models towards clinical products, understanding the mechanical properties and skin tissue structure with which they interact will be important. Here, through measurement and analytical modelling, we advanced knowledge of these properties for commonly used laboratory animals and humans (~30 g to ~150 kg). We hypothesised that skin's stiffness is a function of the thickness of its layers through allometric scaling, which could be estimated from knowing a species' body mass...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29162011/skeletal-muscle-injury-biomarkers-assay-qualification-efforts-and-translation-to-the-clinic
#11
Richard A Goldstein
Skeletal muscle (SKM) injury or myopathy results in structural or functional defects in SKMs that can be caused by variety of factors such as (1) genetic, (2) drug-induced, (3) disease progression (cachexia), or (4) aging (sarcopenia). Creatine kinase (CK) and aspartate transaminase (AST) activity assays have been routinely used as SKM injury biomarkers, but they lack sensitivity and tissue specificity. In collaboration with the Predictive Safety Testing Consortium, we evaluated the diagnostic performance of a muscle injury biomarker panel (MIP) compared to CK and AST and their correlation with the histology scores across 34 different rat studies...
October 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/29160759/sensitivity-enhancement-of-aminoglycosides-in-hydrophilic-interaction-liquid-chromatography-with-tandem-mass-spectrometry-by-post-column-addition-of-trace-sodium-acetate-in-methanol
#12
Daichi Asakawa, Masako Uemura, Takanori Sakiyama, Testuo Yamano
The development of a sensitive and accurate analytical method for monitoring aminoglycosides in food, environmental, and clinical samples is needed for many purposes. This study found that the responses of sodiated and protonated aminoglycosides in hydrophilic interaction chromatography with tandem mass spectrometry were enhanced upon addition of sodium acetate in methanol (5 mg L(-1) at a flow rate of 0.2 mL min(-1)) as a post-column reagent. The sensitivities of sodiated spectinomycin, kanamycin, gentamicins, neomycin, and amikacin were significantly higher than those of the protonated molecules...
November 21, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29160568/nerve-detection-using-optical-spectroscopy-an-evaluation-in-four-different-models-in-human-and-swine-in-vivo-and-post-mortem
#13
Gerrit C Langhout, Torre M Bydlon, Marjolein van der Voort, Manfred Müller, Jeroen Kortsmit, Gerald Lucassen, Andrea J R Balthasar, Geert-Jan van Geffen, Thorsten Steinfeldt, Henricus J C M Sterenborg, Benno H W Hendriks, Theo J M Ruers
OBJECTIVE: Identification of peripheral nerve tissue is crucial in both surgery and regional anesthesia. Recently, optical tissue identification methods are presented to facilitate nerve identification in transcutaneous procedures and surgery. Optimization and validation of such techniques require large datasets. The use of alternative models to human in vivo, like human post mortem, or swine may be suitable to test, optimize and validate new optical techniques. However, differences in tissue characteristics and thus optical properties, like oxygen saturation and tissue perfusion are to be expected...
November 21, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29160558/simpson-s-paradox-in-the-integrated-discrimination-improvement
#14
J Chipman, D Braun
The integrated discrimination improvement (IDI) is commonly used to compare two risk prediction models; it summarizes the extent a new model increases risk in events and decreases risk in non-events. The IDI averages risks across events and non-events and is therefore susceptible to Simpson's paradox. In some settings, adding a predictive covariate to a well calibrated model results in an overall negative (positive) IDI. However, if stratified by that same covariate, the strata-specific IDIs are positive (negative)...
December 10, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/29160507/epidemiological-profile-of-patients-co-infected-with-visceral-leishmaniasis-and-hiv-aids-in-northeast-brazil
#15
Graça Maria de Castro Viana, Marcos Antonio Custódio Neto da Silva, João Victor de Sousa Garcia, Helaine Dias Guimarães, Gelson Farias Arcos, Augusto Viana Arouche Santos, Pedro Viana da Paixão, Maria do Desterro Soares Brandão Nascimento, Carolina de Souza Galvão
INTRODUCTION: Visceral leishmaniasis (VL) and human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) co-infection has been a research topic of interest worldwide. In Brazil, it has been observed that there is a relative underreporting and failure in the understanding and management of this important association. The aim of this study was to analyze epidemiological and clinical aspects of patients with VL with and without HIV/AIDS. METHODS: We conducted an observational and analytical study of patients with VL followed in a Reference Service in the State of Maranhão, Brazil from 2007-2013...
September 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/29160103/integration-site-analysis-in-gene-therapy-patients-expectations-and-reality
#16
Luca Biasco
Integration site analysis is one of the major tools for addressing the safety of gene therapy clinical protocols based on the use of integrating vectors. Over the past years, the study of viral insertions in gene therapy treated patients has allowed identifying insertional mutagenesis events, evaluating the safety of new viral vector platforms and tracking the in vivo clonal dynamics of genetically engineered cell products. While gene therapy is progressively expanding its impact on a broader area of clinical applications, increasingly more accessible, faster and more reliable safety readouts are required from integration site analysis...
November 21, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/29159915/performance-of-a-hybrid-monte-carlo-pencil-beam-dose-algorithm-for-proton-therapy-inverse-planning
#17
Ana María Barragán Montero, Kevin Souris, Daniel Sánchez Parcerisa, Edmond Sterpin, John Aldo Lee
PURPOSE: Analytical algorithms have a limited accuracy when modelling very heterogeneous tumor sites. This work addresses the performance of a hybrid dose optimizer that combines both Monte Carlo (MC) and pencil beam (PB) dose engines to get the best trade-off between speed and accuracy for proton therapy plans. METHODS: The hybrid algorithm calculates the optimal spot weights (w) by means of an iterative optimization process where the dose at each iteration is computed by using a precomputed dose influence matrix based on the conventional PB plus a correction term c obtained from a MC simulation...
November 21, 2017: Medical Physics
https://www.readbyqxmd.com/read/29159405/management-of-tiny-unruptured-intracranial-aneurysms-a-comparative-effectiveness-analysis
#18
Ajay Malhotra, Xiao Wu, Howard P Forman, Charles C Matouk, Dheeraj Gandhi, Pina Sanelli
Importance: Unruptured intracranial aneurysms (UIAs) are relatively common in the general population and are being increasingly diagnosed; a significant proportion are tiny (≤3 mm) aneurysms. There is significant heterogeneity in practice and lack of clear guidelines on the management of incidental, tiny UIAs. It is important to quantify the implications of different management strategies in terms of health benefits to patients. Objective: To evaluate the effectiveness of routine treatment (aneurysm coiling) vs 3 strategies for imaging surveillance compared with no preventive treatment or routine follow-up of tiny UIAs...
November 20, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/29159345/multiplexed-electrochemical-immunoassay-for-two-immunoglobulin-proteins-based-on-cd-and-cu-nanocrystals
#19
Dianping Tang, Jingjing Ren, Minghua Lu
Herein, a simple and feasible electrochemical immunosensing method for simultaneous voltammetric detection of two immunoglobulin proteins, human IgG (HIgG) and rabbit IgG (RIgG), was developed using two distinguishable signal-generation tags on the same electrode. The immunosensor was prepared by immobilizing two Fab antibody fragments on a gold electrode. After this, Cu and Cd nanocrystals, as nanotags, were synthesized and functionalized with identical detection antibodies. Transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR) were employed to characterize the Cu and Cd nanocrystals...
November 21, 2017: Analyst
https://www.readbyqxmd.com/read/29158876/challenges-in-the-setup-of-large-scale-next-generation-sequencing-analysis-workflows
#20
REVIEW
Pranav Kulkarni, Peter Frommolt
While Next-Generation Sequencing (NGS) can now be considered an established analysis technology for research applications across the life sciences, the analysis workflows still require substantial bioinformatics expertise. Typical challenges include the appropriate selection of analytical software tools, the speedup of the overall procedure using HPC parallelization and acceleration technology, the development of automation strategies, data storage solutions and finally the development of methods for full exploitation of the analysis results across multiple experimental conditions...
2017: Computational and Structural Biotechnology Journal
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