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https://www.readbyqxmd.com/read/28539002/from-in-vivo-to-in-vitro-the-medical-device-testing-paradigm-shift
#1
Dayna Kerecman Myers, Alan M Goldberg, Albrecht Poth, Michael F Wolf, Joseph Carraway, James McKim, Kelly P Coleman, Richard Hutchinson, Ronald Brown, Harald F Krug, Anthony Bahinski, Thomas Hartung
Amid growing efforts to advance the replacement, reduction, and refinement of the use of animals in research, there is a growing recognition that in vitro testing of medical devices can be more effective, both in terms of cost and time, and also more reliable than in vivo testing. Although the technological landscape has evolved rapidly in support of these concepts, regulatory acceptance of alternative testing methods has not kept pace. Despite the acceptance by regulators of some in vitro tests (cytotoxicity, gene toxicity, and some hemocompatibility assays), many toxicity tests still rely on animals (irritation, sensitization, acute toxicity, reproductive/developmental toxicity), even where other industrial sectors have already abandoned them...
May 25, 2017: ALTEX
https://www.readbyqxmd.com/read/28538983/assocation-of-a-surgical-task-during-training-with-team-skill-acquisition-among-surgical-residents-the-missing-piece-in-multidisciplinary-team-training
#2
Jessica L Sparks, Dustin L Crouch, Kathryn Sobba, Douglas Evans, Jing Zhang, James E Johnson, Ian Saunders, John Thomas, Sarah Bodin, Ashley Tonidandel, Jeff Carter, Carl Westcott, R Shayn Martin, Amy Hildreth
Importance: The human patient simulators that are currently used in multidisciplinary operating room team training scenarios cannot simulate surgical tasks because they lack a realistic surgical anatomy. Thus, they eliminate the surgeon's primary task in the operating room. The surgical trainee is presented with a significant barrier when he or she attempts to suspend disbelief and engage in the scenario. Objective: To develop and test a simulation-based operating room team training strategy that challenges the communication abilities and teamwork competencies of surgeons while they are engaged in realistic operative maneuvers...
May 24, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28538945/purpuric-drug-eruptions-caused-by-epidermal-growth-factor-receptor-inhibitors-for-non-small-cell-lung-cancer-a-clinicopathologic-study-of-32-cases
#3
Yung-Tsu Cho, Kai-Lung Chen, Yi-Shuan Sheen, Che-Wen Yang, Jau-Yu Liau, Yu-Pin Cheng, Chia-Yu Chu
Importance: Purpuric skin lesions have only rarely been reported in patients receiving epidermal growth factor receptor inhibitors. However, their clinical and histopathologic presentations have varied considerably. Objective: To characterize purpuric skin eruptions caused by epidermal growth factor receptor inhibitors. Design, Setting, and Participants: This prospective study enrolled 32 patients who presented to an integrated dermato-oncologic clinic in a tertiary referral medical center with purpuric skin lesions after using epidermal growth factor receptor inhibitors from January 1, 2013, through December 31, 2015...
May 24, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28538923/policy-of-labor-management-and-health-education-a-progesus-experience
#4
Carinne Magnago, Celia Regina Pierantoni, Tania França, Swheelen de Paula Vieira, Rômulo Gonçalves de Miranda, Dayane Nunes Nascimento
Aim: To evaluate the stage of labor management and education policies in municipal and state health secretariats (SMS and SES, respectively), having as reference the adherence to a qualification and structuring program of work management and education in the Unified Health System. Method: A descriptive and quantitative study, developed with 519 representatives from the Human Resources (HR) area of SMS and SES, through a survey composed of 56 questions, via a computer-assisted telephone interview in 2012...
May 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28538728/the-sunflower-genome-provides-insights-into-oil-metabolism-flowering-and-asterid-evolution
#5
Hélène Badouin, Jérôme Gouzy, Christopher J Grassa, Florent Murat, S Evan Staton, Ludovic Cottret, Christine Lelandais-Brière, Gregory L Owens, Sébastien Carrère, Baptiste Mayjonade, Ludovic Legrand, Navdeep Gill, Nolan C Kane, John E Bowers, Sariel Hubner, Arnaud Bellec, Aurélie Bérard, Hélène Bergès, Nicolas Blanchet, Marie-Claude Boniface, Dominique Brunel, Olivier Catrice, Nadia Chaidir, Clotilde Claudel, Cécile Donnadieu, Thomas Faraut, Ghislain Fievet, Nicolas Helmstetter, Matthew King, Steven J Knapp, Zhao Lai, Marie-Christine Le Paslier, Yannick Lippi, Lolita Lorenzon, Jennifer R Mandel, Gwenola Marage, Gwenaëlle Marchand, Elodie Marquand, Emmanuelle Bret-Mestries, Evan Morien, Savithri Nambeesan, Thuy Nguyen, Prune Pegot-Espagnet, Nicolas Pouilly, Frances Raftis, Erika Sallet, Thomas Schiex, Justine Thomas, Céline Vandecasteele, Didier Varès, Felicity Vear, Sonia Vautrin, Martin Crespi, Brigitte Mangin, John M Burke, Jérôme Salse, Stéphane Muños, Patrick Vincourt, Loren H Rieseberg, Nicolas B Langlade
The domesticated sunflower, Helianthus annuus L., is a global oil crop that has promise for climate change adaptation, because it can maintain stable yields across a wide variety of environmental conditions, including drought. Even greater resilience is achievable through the mining of resistance alleles from compatible wild sunflower relatives, including numerous extremophile species. Here we report a high-quality reference for the sunflower genome (3.6 gigabases), together with extensive transcriptomic data from vegetative and floral organs...
May 22, 2017: Nature
https://www.readbyqxmd.com/read/28538696/immune-components-in-human-milk-are-associated-with-early-infant-immunological-health-outcomes-a-prospective-three-country-analysis
#6
Daniel Munblit, Marina Treneva, Diego G Peroni, Silvia Colicino, Li Yan Chow, Shobana Dissanayeke, Alexander Pampura, Attilio L Boner, Donna T Geddes, Robert J Boyle, John O Warner
The role of breastfeeding in improving allergy outcomes in early childhood is still unclear. Evidence suggests that immune mediators in human milk (HM) play a critical role in infant immune maturation as well as protection against atopy/allergy development. We investigated relationships between levels of immune mediators in colostrum and mature milk and infant outcomes in the first year of life. In a large prospective study of 398 pregnant/lactating women in the United Kingdom, Russia and Italy, colostrum and mature human milk (HM) samples were analysed for immune active molecules...
May 24, 2017: Nutrients
https://www.readbyqxmd.com/read/28538684/magnetic-nanoparticles-for-antibiotics-detection
#7
REVIEW
Cecilia Cristea, Mihaela Tertis, Ramona Galatus
Widespread use of antibiotics has led to pollution of waterways, potentially creating resistance among freshwater bacterial communities. Microorganisms resistant to commonly prescribed antibiotics (superbug) have dramatically increased over the last decades. The presence of antibiotics in waters, in food and beverages in both their un-metabolized and metabolized forms are of interest for humans. This is due to daily exposure in small quantities, that, when accumulated, could lead to development of drug resistance to antibiotics, or multiply the risk of allergic reaction...
May 24, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28538662/maternal-factors-that-induce-epigenetic-changes-contribute-to-neurological-disorders-in-offspring
#8
REVIEW
Avijit Banik, Deepika Kandilya, Seshadri Ramya, Walter Stünkel, Yap Seng Chong, S Thameem Dheen
It is well established that the regulation of epigenetic factors, including chromatic reorganization, histone modifications, DNA methylation, and miRNA regulation, is critical for the normal development and functioning of the human brain. There are a number of maternal factors influencing epigenetic pathways such as lifestyle, including diet, alcohol consumption, and smoking, as well as age and infections (viral or bacterial). Genetic and metabolic alterations such as obesity, gestational diabetes mellitus (GDM), and thyroidism alter epigenetic mechanisms, thereby contributing to neurodevelopmental disorders (NDs) such as embryonic neural tube defects (NTDs), autism, Down's syndrome, Rett syndrome, and later onset of neuropsychological deficits...
May 24, 2017: Genes
https://www.readbyqxmd.com/read/28538654/a-monitoring-system-for-laying-hens-that-uses-a-detection-sensor-based-on-infrared-technology-and-image-pattern-recognition
#9
Mauro Zaninelli, Veronica Redaelli, Fabio Luzi, Valentino Bontempo, Vittorio Dell'Orto, Giovanni Savoini
In Italy, organic egg production farms use free-range housing systems with a big outdoor area and a flock of no more than 500 hens. With additional devices and/or farming procedures, the whole flock could be forced to stay in the outdoor area for a limited time of the day. As a consequence, ozone treatments of housing areas could be performed in order to reduce the levels of atmospheric ammonia and bacterial load without risks, due by its toxicity, both for hens and workers. However, an automatic monitoring system, and a sensor able to detect the presence of animals, would be necessary...
May 24, 2017: Sensors
https://www.readbyqxmd.com/read/28538593/dynamic-response-of-the-lumbar-spine-to-whole-body-vibration-under-a-compressive-follower-preload
#10
Li-Xin Guo, Wei Fan
STUDY DESIGN: A finite element study of dynamic response of the lumbar spine to whole-body vibration. OBJECTIVE: To develop and validate a finite element model for exploring the impact of whole-body vibration on the entire lumbar spine with a compressive follower preload applied. SUMMARY OF BACKGROUND DATA: Several finite element studies have investigated the biodynamic characteristics of the human lumbar spine when exposed to whole-body vibration...
May 22, 2017: Spine
https://www.readbyqxmd.com/read/28538460/transforming-care-for-victims-of-violence
#11
Anne C Boatright
In this month's Magnet® Perspectives column, Anne Boatright, MSN, RN, SANE, describes her efforts to develop a comprehensive forensic nursing program at Methodist Hospital in Omaha. Ms Boatright transformed a sexual assault nurse examiner (SANE) program into one that provides 24/7 coverage at Methodist's 2 SANE locations and cares not only for victims of sexual assault but also for the victims domestic violence, sex trafficking, strangulation, elder abuse, and neglect. Her work extends beyond the walls of Methodist to the community, where she serves as a core member of the Nebraska Human Trafficking Task Force...
June 2017: Journal of Nursing Administration
https://www.readbyqxmd.com/read/28538234/overview-of-lung-development-in-the-newborn-human
#12
David Warburton
In human neonates rapid adaptation from an aqueous intrauterine environment to permanent air breathing is the rate-limiting step for extrauterine life, failure of which justifies the existence of neonatal intensive care units. The lung develops at about 4-6 weeks' gestation in humans as a ventral outpouching of the primitive foregut into the surrounding ventral mesenchyme, termed the laryngotracheal groove. At its posterior end lie progenitor cells that form a pair of bronchial tubes, from which arise all the distal epithelial structures of the lung...
2017: Neonatology
https://www.readbyqxmd.com/read/28538211/the-oxido-metabolic-driver-atf4-enhances-temozolamide-chemo-resistance-in-human-gliomas
#13
Daishi Chen, Manfred Rauh, Michael Buchfelder, Ilker Y Eyupoglu, Nicolai Savaskan
Malignant gliomas are devastating neoplasia with limited curative treatment options. Temozolomide (TMZ, Temcat®, Temodal® or Temodar®) is a first-line treatment for malignant gliomas but the development of drug resistance remains a major concern. Activating transcription factor 4 (ATF4) is a critical oxido-metabolic regulator in gliomas, and its role in the pathogenesis of TMZ-resistance remains elusive. We investigated the effect of TMZ on human glioma cells under conditions of enhanced ATF4 expression (ATF4OE) and ATF4 knock down (ATF4KD)...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28538205/a-rapid-microextraction-by-packed-sorbent-liquid-chromatography-tandem-mass-spectrometry-method-for-the-determination-of-dexamethasone-disodium-phosphate-and-dexamethasone-in-aqueous-humor-of-patients-with-uveitis
#14
Federica Bianchi, Monica Mattarozzi, Nicolò Riboni, Paolo Mora, Stefano A Gandolfi, Maria Careri
A new method based on microextraction by packed sorbent (MEPS) coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed and validated for the determination of dexamethasone and dexamethasone disodium phosphate in human aqueous humor. A central composite design was applied to investigate the effects of both loading and eluting cycles in the MEPS procedure; subsequently the multicriteria method of the desirability functions allowed to find the best conditions for the simultaneous extraction of both the analytes...
May 15, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28538186/an-engineered-virus-library-as-a-resource-for-the-spectrum-wide-exploration-of-virus-and-vector-diversity
#15
Wenli Zhang, Jun Fu, Jing Liu, Hailong Wang, Maren Schiwon, Sebastian Janz, Lukas Schaffarczyk, Lukas von der Goltz, Eric Ehrke-Schulz, Johannes Dörner, Manish Solanki, Philip Boehme, Thorsten Bergmann, Andre Lieber, Chris Lauber, Andreas Dahl, Andreas Petzold, Youming Zhang, A Francis Stewart, Anja Ehrhardt
Adenoviruses (Ads) are large human-pathogenic double-stranded DNA (dsDNA) viruses presenting an enormous natural diversity associated with a broad variety of diseases. However, only a small fraction of adenoviruses has been explored in basic virology and biomedical research, highlighting the need to develop robust and adaptable methodologies and resources. We developed a method for high-throughput direct cloning and engineering of adenoviral genomes from different sources utilizing advanced linear-linear homologous recombination (LLHR) and linear-circular homologous recombination (LCHR)...
May 23, 2017: Cell Reports
https://www.readbyqxmd.com/read/28538040/interleukin-10-592c-a-but-not-1082a-g-promoter-single-nucleotide-polymorphism-is-associated-with-a-decreased-risk-of-colorectal-cancer-in-an-ethnic-kashmiri-population-a-case-control-study
#16
Mujeeb Z Banday, Aga S Sameer, Nissar A Chowdri, Ehtishamul Haq
Chronic inflammation influences the development of various cancers including colorectal cancer (CRC). Interleukin-10 (IL-10), an anti-inflammatory cytokine, plays a vital role in several homeostatic physiological processes occurring in the human gastrointestinal tract including intestinal inflammation and is a key regulator of several gastrointestinal tract pathophysiological processes such as inflammatory bowel diseases that are associated with an increased predisposition to CRC. Several studies have reported the association of various polymorphisms in the human IL-10 gene including IL-10 -592C/A and IL-10 -1082A/G single nucleotide polymorphisms (SNPs) with various cancers including CRC, but these SNPs are yet to be studied in a Kashmiri population with respect to CRC risk...
May 19, 2017: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28537986/an-update-on-lupus-animal-models
#17
Wei Li, Anton A Titov, Laurence Morel
PURPOSE OF REVIEW: The complexity and heterogeneity of the clinical presentation in systemic lupus of erythematosus (SLE), combined to the inherent limitations of clinical research, have made it difficult to investigate the cause of this disease directly in patients. Various mouse models have been developed to dissect the cellular and genetic mechanisms of SLE, as well as to identify therapeutic targets and to screen treatments. The purpose of this review is to summarize the major spontaneous and induced mouse models of SLE and to provide an update on the major advances they have contributed to the field...
May 19, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28537911/a-novel-immunotherapy-targeting-mmp-14-limits-hypoxia-immune-suppression-and-metastasis-in-triple-negative-breast-cancer-models
#18
Binbing Ling, Kathleen Watt, Sunandan Banerjee, Daniel Newsted, Peter Truesdell, Jarrett Adams, Sachdev S Sidhu, Andrew Wb Craig
Matrix metalloproteinase-14 (MMP-14) is a clinically relevant target in metastatic cancers due to its role in tumor progression and metastasis. Since active MMP-14 is localized on the cell surface, it is amenable to antibody-mediated blockade in cancer, and here we describe our efforts to develop novel inhibitory anti-MMP-14 antibodies. A phage-displayed synthetic humanized Fab library was screened against the extracellular domain of MMP-14 and a panel of MMP14-specific Fabs were identified. A lead antibody that inhibits the catalytic domain of MMP-14 (Fab 3369) was identified and treatment of MDA-MB-231 breast cancer cells with Fab 3369 led to significant loss of extracellular matrix degradation and cell invasion abilities...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28537908/increased-expression-of-irf8-in-tumor-cells-inhibits-the-generation-of-th17-cells-and-predicts-unfavorable-survival-of-diffuse-large-b-cell-lymphoma-patients
#19
Weijie Zhong, Xin Xu, Zhigang Zhu, Qinghua Du, Hong Du, Li Yang, Yanying Ling, Huabao Xiong, Qingshan Li
The immunological pathogenesis of diffuse large B cell lymphoma (DLBCL) remains elusive. Searching for new prognostic markers of DLBCL is a crucial focal point for clinical scientists. The aim of the present study was to examine the prognostic value of interferon regulatory factor 8 (IRF8) expression and its effect on the development of Th17 cells in the tumor microenvironment of DLBCL patients. Flow cytometry, immunohistochemistry, and quantitative real-time PCR were used to detect the distribution of Th17 cells and related cytokines and IRF8 in tumor tissues from DLBCL patients...
May 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28537907/sirt1-inhibition-promotes-atherosclerosis-through-impaired-autophagy
#20
Xiaofeng Yang, Jingyuan Wei, Yanhao He, Ting Jing, Yanxiang Li, Yunfang Xiao, Bo Wang, Weirong Wang, Jiye Zhang, Rong Lin
SIRT1, a highly conserved NAD+-dependent protein deacetylase, plays a pivotal role in the pathogenesis and therapy of atherosclerosis (AS). The aim of this study is to investigate the potential effects of SIRT1 on AS in ApoE-/- mice and the underlying mechanisms of autophagy in an ox-LDL-stimulated human monocyte cell line, THP-1. In vivo, the accelerated atherosclerotic progression of mice was established by carotid collar placement; then, mice were treated for 4 weeks with a SIRT1-specific inhibitor, EX-527...
May 8, 2017: Oncotarget
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