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https://www.readbyqxmd.com/read/28350988/micrornas-establish-uniform-traits-during-the-architecture-of-vertebrate-embryos
#1
Dionna M Kasper, Albertomaria Moro, Emma Ristori, Anand Narayanan, Guillermina Hill-Teran, Elizabeth Fleming, Miguel Moreno-Mateos, Charles E Vejnar, Jing Zhang, Donghoon Lee, Mengting Gu, Mark Gerstein, Antonio Giraldez, Stefania Nicoli
Proper functioning of an organism requires cells and tissues to behave in uniform, well-organized ways. How this optimum of phenotypes is achieved during the development of vertebrates is unclear. Here, we carried out a multi-faceted and single-cell resolution screen of zebrafish embryonic blood vessels upon mutagenesis of single and multi-gene microRNA (miRNA) families. We found that embryos lacking particular miRNA-dependent signaling pathways develop a vascular trait similar to wild-type, but with a profound increase in phenotypic heterogeneity...
March 27, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28346267/generalizing-study-results-a-potential-outcomes-perspective
#2
Catherine R Lesko, Ashley L Buchanan, Daniel Westreich, Jessie K Edwards, Michael G Hudgens, Stephen R Cole
Great care is taken in epidemiologic studies to ensure the internal validity of causal effect estimates; however, external validity has received considerably less attention. When the study sample is not a random sample of the target population, the sample average treatment effect, even if internally valid, cannot usually be expected to equal the average treatment effect in the target population. The utility of an effect estimate for planning purposes and decision making will depend on the degree of departure from the true causal effect in the target population due to problems with both internal and external validity...
March 24, 2017: Epidemiology
https://www.readbyqxmd.com/read/28345790/metabolic-responses-to-exogenous-ghrelin-in-obesity-and-early-after-roux-en-y-gastric-bypass-in-humans
#3
Robyn A Tamboli, Joseph Antoun, Reem M Sidani, B Austin Clements, Emily A Eckert, Pam Marks-Shulman, Bruce D Gaylinn, D Brandon Williams, Ronald H Clements, Vance L Albaugh, Naji N Abumrad
AIMS: Ghrelin is a gastric-derived hormone that stimulates growth hormone (GH) secretion and has a multi-faceted role in the regulation of energy homeostasis, including glucose metabolism. Circulating ghrelin concentrations are modulated in response to nutritional status, but responses to ghrelin in altered metabolic states are poorly understood. We investigated the metabolic effects of ghrelin in obesity and early after Roux-en-Y gastric bypass (RYGB). MATERIALS AND METHODS: We assessed central and peripheral metabolic responses to acyl ghrelin infusion (1 pmol kg(-1) min(-1) ) in healthy, lean subjects (n = 9) and non-diabetic, obese subjects (n = 9) before and two weeks after RYGB...
March 27, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28345355/coronary-spasm-secondary-to-cefuroxime-injection-complicated-with-cardiogenic-shock-a-manifestation-of-kounis-syndrome-case-report-and-literature-review
#4
Andreas Mitsis, Evi Christodoulou, Panayiota Georgiou
Kounis syndrome is defined as the coincidental occurrence of an acute coronary syndrome with hypersensitivity reactions following an allergic event. The three reported variants of Kounis syndrome are vasospastic allergic angina, allergic myocardial infarction and stent thrombosis with occluding thrombus. The syndrome is caused by various inflammatory mediators. The pathophysiological characteristics of Kounis syndrome involve coronary artery spasm and/or atheromatous plaque erosion or rupture during an allergic reaction...
March 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28344535/the-correlation-between-a-numerical-rating-scale-of-patient-satisfaction-with-current-management-of-an-upper-extremity-disorder-and-a-general-measure-of-satisfaction-with-the-medical-visit
#5
Marijn M G van Berckel, Niels H Bosma, Michiel G J S Hageman, David Ring, Ana-Maria Vranceanu
Background: Patient satisfaction is used as an indicator of quality of care, but the measures currently available are lengthy and cumbersome and may not be feasible in orthopedic surgical practices. We set out to assess the relationship between the Medical Interview Satisfaction Scale (MISS-21) and a numerical rating scale (NRS) of patient satisfaction with current management of an orthopedic upper extremity condition. Methods: In this cross-sectional study, 86 patients from the practices of 2 hand surgeons were included during an initial or follow-up visit...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28344357/quantum-dot-surface-engineering-toward-inert-fluorophores-with-compact-size-and-bright-stable-emission
#6
Sung Jun Lim, Liang Ma, André Schleife, Andrew M Smith
The surfaces of colloidal nanocrystals are complex interfaces between solid crystals, coordinating ligands, and liquid solutions. For fluorescent quantum dots, the properties of the surface vastly influence the efficiency of light emission, stability, and physical interactions, and thus determine their sensitivity and specificity when they are used to detect and image biological molecules. But after more than 30 years of study, the surfaces of quantum dots remain poorly understood and continue to be an important subject of both experimental and theoretical research...
August 1, 2016: Coordination Chemistry Reviews
https://www.readbyqxmd.com/read/28343812/stature-estimation-in-a-contemporary-japanese-population-based-on-clavicular-measurements-using-multidetector-computed-tomography
#7
Suguru Torimitsu, Yohsuke Makino, Hisako Saitoh, Ayaka Sakuma, Namiko Ishii, Daisuke Yajima, Go Inokuchi, Ayumi Motomura, Fumiko Chiba, Rutsuko Yamaguchi, Mari Hashimoto, Yumi Hoshioka, Hirotaro Iwase
The aims of this study was to assess the correlation between stature and clavicular measurements in a contemporary Japanese population using three-dimensional (3D) computed tomographic (CT) images, and to establish regression equations for predicting stature. A total of 249 cadavers (131 males, 118 females) underwent postmortem CT scanning and subsequent forensic autopsy between October 2011 and May 2016 in our department. Four clavicular variables (linear distances between the superior margins of the left and right sternal facets to the anterior points of the left and right acromial ends and between the superior margins of the left and right sternal facets to the left and right conoid tubercles) were measured using 3D CT reconstructed images that extracted only bone data...
March 8, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28342311/lengthy-one-dimensional-magnetite-fe3o4-sub-microfibers-with-excellent-electrochemical-performance
#8
Jianchao Ma, Jiali Chang, Hongzhu Ma, Duoduo Zhang, Qingliang Ma, Shaobin Wang
One dimensional Fe3O4 sub-microfibers with an average diameter of about 920nm and length of about 25μm were prepared by hydrothermal synthesis in the presence of sodium citrate (Na3cit). The physicochemical properties were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). It was found that Fe3O4 crystal nuclei were generated from different Fe(2+)-citrate complexes under hydrothermal conditions and Na3cit as a capping agent promoted the formation of Fe3O4 microfibers...
March 18, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28341874/the-multi-faceted-potential-of-cd38-antibody-targeting-in-multiple-myeloma
#9
Rory M Shallis, Christopher M Terry, Seah H Lim
CD38, an adenine dinucleotide phosphate (ADP) ribose cyclase and a cyclic ADP ribose hydrolase, is widely expressed on the surface of multiple myeloma (MM) cells. It is known to play a pivotal role in the downstream pathways that mediate MM cell growth, signal transduction, and adhesion. The clinical use of CD38 monoclonal antibodies (MoAbs), such as daratumumab, either as monotherapy or in combination with other anti-MM agents, has produced impressive results in patients who have failed standard MM therapy...
March 24, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28341493/procalcitonin-as-a-biomarker-for-predicting-amputation-level-in-lower-extremity-infections
#10
Matthew M Reiner, Wissam E Khoury, Michael B Canales, Richard A Chmielewski, Kartick Patel, Mark C Razzante, Coleman O Cloughtery, Douglas Y Rowland
Inflammatory markers are essential tools in the decision-making process for lower extremity infections. When coupled with objective findings, clinicians can more accurately diagnose and treat these entities. Typically, markers such as the white blood cell count, erythrocyte sedimentation rate, and C-reactive protein are used to initially assess these patients or monitor the progression of medical or surgical therapy. Procalcitonin is a newer inflammatory marker that is specific for an infectious process. Originally, procalcitonin was used to monitor antibiotic therapy and sepsis for patients in the intensive care setting, but it has now been expanded to other facets of medicine...
March 21, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28340772/vanadium-doped-tin-oxide-porous-nanofibers-enhanced-responsivity-for-hydrogen-detection
#11
Xiuru Xu, Min Yin, Na Li, Wei Wang, Bolun Sun, Ming Liu, Dongwei Zhang, Zhenyu Li, Ce Wang
Vanadium (V)-doped tin oxide (SnO2) one-dimensional porous nanofibers (PNFs) were fabricated for the hydrogen detection application. V-doping changes the distances of different facets of the SnO2 crystal in different roles, and therefore deform or distort the SnO2 structure. The modulation effects of V(4+) and V(5+) on hydrogen detecting performance were discussed. With a suitable amount of V-doping, the porous SnO2 nanofibers exhibits ~66% increase of response sensitivity, 33% faster in response (2s) and 50% faster in recovery time (1s), comparing with undoped SnO2 nanofibers...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340495/residents-learning-curve-of-lumbar-transforaminal-epidural-steroid-injections
#12
Holger Joswig, Sarah Roberta Haile, Gerhard Hildebrandt, Martin Nikolaus Stienen
Background and Study Aims There is a paucity of literature on beginners' training and on its connection with patient safety for transforaminal epidural steroid injections (TFESIs). This study retrospectively assessed the learning curves and associated complications of neurosurgery residents never previously exposed to TFESI and compared them with experienced board-certified faculty neurosurgeons (BCFNs). Material and Methods Procedure time in minutes, dose-area product (DAP) in cGy*cm(2), periprocedural observations, and complications in 354 TFESIs for radicular pain secondary to lumbar disk herniation or lumbar spinal stenosis were extracted from operative notes and the electronic infiltration logbook in the per-injection format...
March 24, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28340364/cervical-facet-force-analysis-after-disc-replacement-versus-fusion
#13
Vikas V Patel, Zachary R Wuthrich, Kirk C McGilvray, Matthew C Lafleur, Emily M Lindley, Derrick Sun, Christian M Puttlitz
BACKGROUND: Cervical total disc replacement was developed to preserve motion and reduce adjacent-level degeneration relative to fusion, yet concerns remain that total disc replacement will lead to altered facet joint loading and long-term facet joint arthrosis. This study is intended to evaluate changes in facet contact force, pressure and surface area at the treated and superior adjacent levels before and after discectomy, disc replacement, and fusion. METHODS: Ten fresh-frozen human cadaveric cervical spines were potted from C2 to C7 with pressure sensors placed into the facet joints of C3-C4 and C4-C5 via slits in the facet capsules...
March 18, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28340125/the-association-of-lesbian-gay-and-bisexual-identity-facets-with-smoking-dependence-motives
#14
Nathan Grant Smith, Kate Winderman, Brooke King, Ezemenari M Obasi, Lorraine R Reitzel
Introduction: Lesbian, gay, and bisexual (LGB) adults have higher rates of smoking than heterosexual adults. LGB individuals face unique stressors, including challenges associated with having a LGB identity. The extent to which these unique stressors are related to dependence motives in LGB adult smokers, however, has not been previously explored. The current study was conducted to redress these gaps. Methods: Participants (N=52; Mage=42.8; 55.8% Black/African American) were recruited from the local community...
March 9, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28339749/multi-generational-genome-wide-association-studies-identify-chromosomal-regions-associated-with-ascites-phenotype
#15
K J Tarrant, S Dey, R Kinney, N B Anthony, D D Rhoads
Ascites is a multi-faceted disease commonly observed in fast growing broilers, which is initiated when the body is insufficiently oxygenated. A series of events follow, including an increase in pulmonary artery pressure, right ventricle hypertrophy, and accumulation of fluid in the abdominal cavity and pericardium. Advances in management practices along with improved selection programs have decreased ascites incidence in modern broilers. However, ascites syndrome remains an economically important disease throughout the world, causing estimated losses of $100 million per year...
February 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339551/anticoagulant-and-antiplatelet-management-for-spinal-procedures-a-prospective-descriptive-study-and-interpretation-of-guidelines
#16
Bradly S Goodman, L McLean House, Sridhar Vallabhaneni, Srinivas Mallempati, Matthew R Willey, Matthew Thomas Smith
Setting.:  Epidural hematoma rarely complicates interventional spine procedures. While anticoagulant and antiplatelet drugs increase bleeding risk, cessation may precipitate serious thromboembolic events. The Spine Intervention Society (SIS) and American Society of Regional Anesthesia and Pain Medicine (ASRA) put forth guidelines that dissent with regard to management of hemostatically active agents during commonly performed spinal injections. Objective.:  To validate an antiplatelet/anticoagulant management table based on modifications of the SIS 2013 and ASRA 2015 guidelines...
October 6, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28339441/the-role-of-the-ligamentum-flavum-area-as-a-morphological-parameter-of-lumbar-central-spinal-stenosis
#17
Young Uk Kim, Jun Young Park, Doo Hwan Kim, Myung-Hwan Karm, Jae-Young Lee, Jee In Yoo, Sung Won Chon, Jeong Hun Suh
BACKGROUND: Hypertrophy of the ligamentum flavum (LF) has been considered as a major cause of lumbar central spinal stenosis (LCSS). Previous studies have found that ligamentum flavum thickness (LFT) is correlated with aging, disc degeneration, and lumbar spinal stenosis. However, hypertrophy is different from thickness. Thus, to evaluate hypertrophy of the whole LF, we devised a new morphological parameter, called the ligamentum flavum area (LFA). OBJECTIVES: We hypothesized that the LFA is a key morphologic parameter in the diagnosis of LCSS...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28339179/synthesis-of-111-facet-exposed-mgo-with-surface-oxygen-vacancies-for-ros-generation-in-the-dark
#18
Ying-Juan Hao, Bing Liu, Li-Gang Tian, Fa-Tang Li, Jie Ren, Shao-Jia Liu, Ying Liu, Jun Zhao, Xiaojing Wang
Seeking a simple and moderate route to generate reactive oxygen species (ROS) for antibiosis is of great interest and challenge. This work demonstrates that molecule transition and electron rearrangement processes can directly occur only through chemisorption interaction between the adsorbed O2 and high-energy {111} facet-exposed MgO with abundant surface oxygen vacancies (SOVs), hence producing singlet oxygen and superoxide anion radicals without light irradiation. These ROS were confirmed by electron paramagnetic resonance, in-situ Raman and scavenger experiments, respectively...
March 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28338264/engineering-high-energy-interfacial-structures-for-high-performance-oxygen-involving-electrocatalysis
#19
Chunxian Guo, Yao Zheng, Jingrun Ran, Fangxi Xie, Mietek Jaroniec, Shi-Zhang Qiao
Engineering high-energy interfacial structures for high-performance electrocatalysis is achieved by chemical coupling of active CoO nanoclusters and high-index facet Mn3 O4 nano-octahedrons (hi-Mn3 O4 ). A thorough characterization, including synchrotron-based near edge X-ray absorption fine structure, reveals that strong interactions between both components promote the formation of high-energy interfacial Mn-O-Co species and high oxidation state CoO, from which electrons are drawn by Mn(III) -O present in hi-Mn3 O4 ...
March 24, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28338228/taking-stock-of-the-diversity-and-sense-of-community-debate
#20
Zachary P Neal
Over the past couple of years, a debate has played out in the pages of the American Journal of Community Psychology concerning the relationship between two of Community Psychology's core values: promoting diversity and promoting a sense of community. This special section is to continue a discussion about diversity and community, both among the debate's initial contributors (Alex Stivala, Greg Townley, and Zachary Neal), as well as among others whose own work has touched on these issues (Anne Brodsky, Richard Florida, Jean Hill, and Roderick Watts)...
March 24, 2017: American Journal of Community Psychology
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