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https://www.readbyqxmd.com/read/28819918/network-analysis-of-se-and-zn-related-proteins-in-the-serum-proteomics-expression-profile-of-the-endemic-dilated-cardiomyopathy-keshan-disease
#1
Sen Wang, Yanyan Lv, Yingting Wang, Peiru Du, Wuhong Tan, Mikko J Lammi, Xiong Guo
Keshan disease (KD) is an endemic cardiomyopathy with high mortality. Selenium (Se) and zinc (Zn) deficiencies are closely related to KD. The molecular mechanism of KD pathogenesis is still unclear. There are only few studies on the interaction of trace elements and proteins associated with the pathogenesis of KD. In this study, isobaric tags for relative and absolute quantitation (iTRAQ)-coupled two-dimensional liquid chromatography tandem mass spectrometry (2DLC-MS/MS) technique analysis was used to analyze the differential expression of proteins from serum samples...
August 18, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28818574/antimicrobial-resistance-determinants-and-susceptibility-profiles-of-pneumococcal-isolates-recovered-in-trinidad-and-tobago
#2
Paulina A Hawkins, Patrick E Akpaka, Michele Nurse-Lucas, Rebecca Gladstone, Stephen D Bentley, Robert F Breiman, Lesley McGee, William H Swanston
INTRODUCTION: In Latin America and the Caribbean, pneumococcal infections were estimated to account for 12,000-18,000 deaths, 327,000 cases of pneumonia, 4,000 cases of meningitis and 1,229 cases of sepsis each year in children under five years old. Resistance of pneumococci to antimicrobial agents has evolved into a worldwide health problem in the last few decades. OBJECTIVE: The aim of this study was to determine the antimicrobial susceptibility profiles of 98 pneumococcal isolates collected in Trinidad and Tobago and associated genetic determinants...
August 14, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28817392/minimum-operational-standards-for-24-7-available-emergency-departments-in-the-netherlands-a-first-step-taken-by-emergency-physicians-using-an-e-delphi-approach
#3
Menno I Gaakeer, Rebekka Veugelers, Peter Patka, Robbert Huijsman
OBJECTIVE: The objective of this study was to effectuate a consensus of emergency physicians on minimum requirements for facility, diagnostic, and medical specialist availability as a first step toward minimum operational standards for 24/7 available emergency departments (EDs) in the Netherlands. PATIENTS AND METHODS: A two-part e-Delphi through online survey was performed between January 2015 and May 2016, using a panel of 20 experts in emergency medicine. The aim of part I was to reach an agreement on a list of possible ED elements and their definitions...
August 16, 2017: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/28811078/mentoring-models-in-neurosurgical-training-review-of-literature
#4
REVIEW
Taiwo Akhigbe, Ardalan Zolnourian, Diederik Bulters
BACKGROUND: Effective mentoring is an invaluable element in the development of next generation of neurosurgeons. A mentor helps to develop professional core values, technical and non-technical skills, attitudes and disposition required to be qualified and competent neurosurgeon. Giving the invaluable significance of mentoring in neurosurgery, we undertook this literature review to identify mentoring models evaluating its success and relative benefit. METHODS: Literature search identified using MeSH word 'mentor', mentoring, mentorship, mentoring model, neurosurgery' in MEDLINE, EMBASE and Scopus databases from 1990 to 2016...
August 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28811021/quantitative-analysis-of-major-and-trace-elements-in-nh4hf2-modified-silicate-rock-powders-by-laser-ablation-inductively-coupled-plasma-mass-spectrometry
#5
Wen Zhang, Zhaochu Hu, Yongsheng Liu, Wenwu Yang, Haihong Chen, Shenghong Hu, Hongyan Xiao
In this paper, we described a NH4HF2 digestion method as sample preparation for the rapid determination of major and trace elements in silicate rocks using laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS). Sample powders digested by NH4HF2 at 230 °C for 3 h form ultrafine powders with a typical grain size d80 < 8.5 μm, and various silicate rocks have a consistent grain morphology and size, allowing us to produce pressed powder pellets that have excellent cohesion and homogeneity suitable for laser ablation micro-analysis without the addition of binder...
August 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28810730/hydrogen-isotope-fractionation-during-biodegradation-of-1-2-dichloroethane-potential-for-pathway-identification-using-a-multi-element-c-cl-and-h-isotope-approach
#6
Jordi Palau, Orfan Shouakar-Stash, Siti Hatijah Mortan, Rong Yu, Monica Rosell, Ernest Marco-Urrea, David L Freedman, Ramon Aravena, Albert Soler, Daniel Hunkeler
Even though multi-element isotope fractionation patterns provide crucial information to identify contaminant degradation pathways in the field, those involving hydrogen are still lacking for many halogenated groundwater contaminants and degradation pathways. This study investigates for the first time hydrogen isotope fractionation during both aerobic and anaerobic biodegradation of 1,2-dichloroethane (1,2-DCA) using five microbial cultures. Transformation-associated isotope fractionation values (ε_bulk^H) were: -115 ± 18‰ (aerobic C-H bond oxidation), -34 ± 4‰ and -38 ± 4‰ (aerobic C-Cl bond cleavage via hydrolytic dehalogenation), -57 ± 3‰ and -77 ± 9‰ (anaerobic C-Cl bond cleavage via reductive dihaloelimination)...
August 16, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28810562/anti-depressant-like-effects-of-jieyu-chufan-capsules-in-a-mouse-model-of-unpredictable-chronic-mild-stress
#7
Hui Zhao, Bingyu Liang, Linjie Yu, Yun Xu
Jieyu chufan (JYCF) is a well-known Chinese traditional medicine used for depression; however, the molecular mechanism underlying its anti-depressant action has remained elusive. In the present study, the anti-depressant effects of JYCF and the potential mechanisms were investigated in a mouse model. Five groups of 12 C57BL/6 mice each were used in the study, including a normal control group (NC group), a model control group (MC group) and three groups, which received different doses of JYCF (1.25, 2.5 and 5 g/kg) orally for 21 days (JYCF groups)...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810023/characteristics-of-preapproval-and-postapproval-studies-for-drugs-granted-accelerated-approval-by-the-us-food-and-drug-administration
#8
Huseyin Naci, Katelyn R Smalley, Aaron S Kesselheim
Importance: Drugs treating serious or life-threatening conditions can receive US Food and Drug Administration (FDA) accelerated approval based on showing an effect in surrogate measures that are only reasonably likely to predict clinical benefit. Confirmatory trials are then required to determine whether these effects translate to clinical improvements. Objective: To characterize preapproval and confirmatory clinical trials of drugs granted accelerated approval...
August 15, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28808806/brca1-mimetic-compound-nsc35446-hcl-inhibits-ikkb-expression-by-reducing-estrogen-receptor-%C3%AE-occupancy-in-the-ikkb-promoter-and-inhibits-nf-%C3%AE%C2%BAb-activity-in-antiestrogen-resistant-human-breast-cancer-cells
#9
Shyam Nathan, Yongxian Ma, York A Tomita, Eliseu De Oliveira, Milton L Brown, Eliot M Rosen
PURPOSE: We previously identified small molecules that fit into a BRCA1-binding pocket within estrogen receptor-alpha (ERα), mimic the ability of BRCA1 to inhibit ERα activity ("BRCA1-mimetics"), and overcome antiestrogen resistance. One such compound, the hydrochloride salt of NSC35446 ("NSC35446.HCl"), also inhibited the growth of antiestrogen-resistant LCC9 tumor xenografts. The purpose of this study was to investigate the down-stream effects of NSC35446.HCl and its mechanism of action...
August 14, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28807526/the-effect-of-fixed-charge-density-and-cartilage-swelling-on-mechanics-of-knee-joint-cartilage-during-simulated-gait
#10
Lasse P Räsänen, Petri Tanska, Štefan Zbýň, Corrinus C van Donkelaar, Siegfried Trattnig, Miika T Nieminen, Rami K Korhonen
The effect of swelling of articular cartilage, caused by the fixed charge density (FCD) of proteoglycans, has not been demonstrated on knee joint mechanics during simulated walking before. In this study, the influence of the depth-wise variation of FCD was investigated on the internal collagen fibril strains and the mechanical response of the knee joint cartilage during gait using finite element (FE) analysis. The FCD distribution of tibial cartilage was implemented from sodium ((23)Na) MRI into a 3-D FE-model of the knee joint ("Healthy model")...
July 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28807525/experimental-and-computational-analysis-of-micromotions-of-an-uncemented-femoral-knee-implant-using-elastic-and-plastic-bone-material-models
#11
Sanaz Berahmani, Dennis Janssen, Nico Verdonschot
It is essential to calculate micromotions at the bone-implant interface of an uncemented femoral total knee replacement (TKR) using a reliable computational model. In the current study, experimental measurements of micromotions were compared with predicted micromotions by Finite Element Analysis (FEA) using two bone material models: linear elastic and post-yield material behavior, while an actual range of interference fit was simulated. The primary aim was to investigate whether a plasticity model is essential in order to calculate realistic micromotions...
July 29, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28807512/non-linear-finite-element-model-to-assess-the-effect-of-tendon-forces-on-the-foot-ankle-complex
#12
Enrique Morales-Orcajo, Thales R Souza, Javier Bayod, Estevam Barbosa de Las Casas
A three-dimensional foot finite element model with actual geometry and non-linear behavior of tendons is presented. The model is intended for analysis of the lower limb tendon forces effect in the inner foot structure. The geometry of the model was obtained from computational tomographies and magnetic resonance images. Tendon tissue was characterized with the first order Ogden material model based on experimental data from human foot tendons. Kinetic data was employed to set the load conditions. After model validation, a force sensitivity study of the five major foot extrinsic tendons was conducted to evaluate the function of each tendon...
August 11, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28805962/medicago-truncatula-molybdate-transporter-type-1-mtmot1-3-is-a-plasma-membrane-molybdenum-transporter-required-for-nitrogenase-activity-in-root-nodules-under-molybdenum-deficiency
#13
Manuel Tejada-Jiménez, Patricia Gil-Díez, Javier León-Mediavilla, Jiangqi Wen, Kirankumar S Mysore, Juan Imperial, Manuel González-Guerrero
Molybdenum, as a component of the iron-molybdenum cofactor of nitrogenase, is essential for symbiotic nitrogen fixation. This nutrient has to be provided by the host plant through molybdate transporters. Members of the molybdate transporter family Molybdate Transporter type 1 (MOT1) were identified in the model legume Medicago truncatula and their expression in nodules was determined. Yeast toxicity assays, confocal microscopy, and phenotypical characterization of a Transposable Element from Nicotiana tabacum (Tnt1) insertional mutant line were carried out in the one M...
August 14, 2017: New Phytologist
https://www.readbyqxmd.com/read/28805402/middle-ground-approach-to-paradox-within-and-between-culture-examination-of-the-creative-benefits-of-paradoxical-frames
#14
Angela K-Y Leung, Shyhnan Liou, Ella Miron-Spektor, Brandon Koh, David Chan, Roni Eisenberg, Iris Schneider
Thriving in increasingly complex and ambiguous environments requires creativity and the capability to reconcile conflicting demands. Recent evidence with Western samples has suggested that paradoxical frames, or mental templates that encourage individuals to recognize and embrace contradictions, could produce creative benefits. We extended the timely, but understudied, topic by studying the nuances of for whom and why creative advantages of paradoxical frames emerge. We suggest that people endorsing a middle ground approach are less likely to scrutinize conflict and reconcile with integrative solutions, thus receiving less creative benefits of paradoxical frames...
August 14, 2017: Journal of Personality and Social Psychology
https://www.readbyqxmd.com/read/28804666/primary-small-cell-carcinoma-of-the-hypopharynx-a-report-of-two-cases-and-review-of-nine-additional-cases
#15
Mitsuhiko Nakahira, Kiyomi Kuba, Satoko Matsumura, Masashi Sugasawa
OBJECTIVE: Two patients with primary small cell carcinoma (SmCC) of the hypopharynx, an extremely rare site for the occurrence of SmCC, are reported and nine additional well-documented cases are reviewed. METHODS: Case report and review of the literature concerning primary SmCC of the hypopharynx. RESULTS: On the final analysis, we reviewed eleven cases of primary SmCC of the hypopharynx. The tumors contained mixed elements of SmCC and squamous cell carcinoma (SCC) in six (55%) of eleven patients...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28804642/e-learning-for-medical-imaging-specialists-introducing-blended-learning-in-a-nuclear-medicine-specialist-course
#16
Torjan Haslerud, Andreas Julius Tulipan, Robert M Gray, Martin Biermann
BACKGROUND: While e-learning has become an important tool in teaching medical students, the training of specialists in medical imaging is still dominated by lecture-based courses. PURPOSE: To assess the potential of e-learning in specialist education in medical imaging. MATERIAL AND METHODS: An existing lecture-based five-day course in Clinical Nuclear Medicine (NM) was enhanced by e-learning resources and activities, including practical exercises...
July 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28803266/a-degradome-based-polymerase-chain-reaction-to-resolve-the-potential-of-environmental-samples-for-2-4-dichlorophenol-biodegradation
#17
Eslam S Ibrahim, Mona T Kashef, Tamer M Essam, Mohammed A Ramadan
A clean way to overcome environmental pollution is biodegradation. In this perspective, at the intersection of biodegradation and metagenomics, the degradome is defined as the totality of genes related to the biodegradation of a certain compound. It includes the genetic elements from both culturable and uncultured microorganisms. The possibility of assessing the biodegradation potential of an environmental samples, using a degradome-based polymerase chain reaction, was explored. 2,4-Dichlorophenol (2,4-DCP) was chosen as a model and the use of tfdB gene as a biodegradation marker was confirmed by bioinformatics study of TfdB protein...
August 12, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28802557/parents-perspectives-of-closeness-and-separation-with-their-preterm-infants-in-the-nicu
#18
Stephanie C Treherne, Nancy Feeley, Lyne Charbonneau, Anna Axelin
OBJECTIVE: To discover parents' perceptions of closeness to and separation from their preterm infants in the NICU. DESIGN: Qualitative descriptive. SETTING: Urban Level III NICU. PARTICIPANTS: Twenty parents of preterm infants in the NICU. METHODS: After ethics approval, data were collected with a smartphone application created for this study. Parents recorded their descriptions of moments of closeness and separation over a 24-hour period in the NICU...
August 9, 2017: Journal of Obstetric, Gynecologic, and Neonatal Nursing: JOGNN
https://www.readbyqxmd.com/read/28801402/reasons-for-non-adherence-to-cardiometabolic-medications-and-acceptability-of-an-interactive-voice-response-intervention-in-patients-with-hypertension-and-type-2-diabetes-in-primary-care-a-qualitative-study
#19
Aikaterini Kassavou, Stephen Sutton
OBJECTIVES: This study explored the reasons for patients' non-adherence to cardiometabolic medications, and tested the acceptability of the interactive voice response (IVR) as a way to address these reasons, and support patients, between primary care consultations. DESIGN, METHOD, PARTICIPANTS AND SETTING: The study included face-to-face interviews with 19 patients with hypertension and/or type 2 diabetes mellitus, selected from primary care databases, and presumed to be non-adherent...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28800585/comparative-pathogenomics-of-clostridium-tetani
#20
Jonathan E Cohen, Rong Wang, Rong-Fong Shen, Wells W Wu, James E Keller
Clostridium tetani and Clostridium botulinum produce two of the most potent neurotoxins known, tetanus neurotoxin and botulinum neurotoxin, respectively. Extensive biochemical and genetic investigation has been devoted to identifying and characterizing various C. botulinum strains. Less effort has been focused on studying C. tetani likely because recently sequenced strains of C. tetani show much less genetic diversity than C. botulinum strains and because widespread vaccination efforts have reduced the public health threat from tetanus...
2017: PloS One
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