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https://www.readbyqxmd.com/read/28528368/preparation-of-allogeneic-bone-for-alveolar-ridge-augmentation
#1
Kornel Krasny, Artur Kamiński, Marta Krasny, Tomasz Czech, Andrzej Wojtowicz
Implant treatment is safe and predictable with sufficient amount and quality of bone tissue. In case of severely reduced bone tissue after a tooth was lost, augmentation of such tissue is necessary before implant embedment. Retrospective evaluation covered 380 alveolar ridge reconstructions. The study material consisted of human grafts prepared by the Department of Transplantology and Central Tissue Bank, Medical University of Warsaw. Presentation of laboratory procedures in the context of physical parameters of frozen, radiation sterilised, allogeneic corticocancellous material was presented...
May 20, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28528127/determining-the-effectiveness-of-an-elder-abuse-nurse-examiner-curriculum-a-pilot-study
#2
Janice Du Mont, Daisy Kosa, Rebecca Yang, Shirley Solomon, Sheila Macdonald
OBJECTIVES: To pilot and evaluate a novel Elder Abuse Nurse Examiner Curriculum and its associated training materials for their efficacy in improving Sexual Assault Nurse Examiner (SANE)s' knowledge of elder abuse and competence in delivering care to abused older adults. METHODS: Pilot training was held with 18 SANEs from across Ontario, Canada. A 52-item pre- and post-training questionnaire was administered that assessed participants' self-reported knowledge and perceived skills-based competence related to elder abuse care...
May 6, 2017: Nurse Education Today
https://www.readbyqxmd.com/read/28526404/airborne-polycyclic-aromatic-hydrocarbons-trigger-human-skin-cells-aging-through-aryl-hydrocarbon-receptor
#3
Yuan Qiao, Qiang Li, Hong-Yang Du, Qiao-Wei Wang, Ye Huang, Wei Liu
Accumulating evidence suggests that polycyclic aromatic hydrocarbons (PAH) which adsorbed on the surface of ambient air particulate matters (PM), are the major toxic compound to cause cardiovascular and respiratory diseases, even cancer. However, its detrimental effects on human skin cell remain unclear. Here, we demonstrated that SRM1649b, a reference urban dust material of PAH, triggers human skin cells aging through cell cycle arrest, cell growth inhibition and apoptosis. Principally, SRM1649b facilitated Aryl hydrocarbon receptor (AhR) translocated into nucleus, subsequently activated ERK/MAPK signaling pathway, and upregulated aging-related genes expression...
May 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28525808/characterization-of-post-disaster-environmental-management-for-hazardous-materials-incidents-lessons-learnt-from-the-tianjin-warehouse-explosion-china
#4
Hui Zhang, Huabo Duan, Jian Zuo, MingWei Song, Yukui Zhang, Bo Yang, Yongning Niu
Hazardous Materials Incidents (HMIs) have attracted a growing public concern worldwide. The health risks and environmental implications associated with HMIs are almost invariably severe, and underscore the urgency for sound management. Hazardous Materials Explosion incidents (HMEIs) belong to a category of extremely serious HMIs. Existing studies placed focuses predominately on the promptness and efficiency of emergency responses to HMIs and HMEIs. By contrast, post-disaster environmental management has been largely overlooked...
May 16, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28523504/laser-ablation-inductively-coupled-plasma-mass-spectrometry-imaging-of-plant-metabolites
#5
Callie Seaman
LA-ICP-MS (Laser Ablation Inductively Coupled Plasma Mass Spectrometry) is a highly sensitive isotopic and elemental analytical technique that has a wide application for solid samples such as plant material. Within this chapter we describe how to prepare leaf material, seeds, and fruit for 2D elemental distribution maps, preparation of reference materials, method condition optimization, special resolution calculation, and the limit of detection.
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28522829/somatic-tumor-mutations-detected-by-targeted-next-generation-sequencing-in-minute-amounts-of-serum-derived-cell-free-dna
#6
Marjolein J A Weerts, Ronald van Marion, Jean C A Helmijr, Corine M Beaufort, Niels M G Krol, Anita M A C Trapman-Jansen, Winand N M Dinjens, Stefan Sleijfer, Maurice P H M Jansen, John W M Martens
The use of blood-circulating cell-free DNA (cfDNA) as 'liquid-biopsy' is explored worldwide, with hopes for its potential in providing prognostic or predictive information in cancer treatment. In exploring cfDNA, valuable repositories are biobanks containing material collected over time, however these retrospective cohorts have restrictive resources. In this study, we aimed to detect tumor-specific mutations in only minute amounts of serum-derived cfDNA by using a targeted next generation sequencing (NGS) approach...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28521982/hydrophobization-and-smoothing-of-cellulose-nanofibril-films-by-cellulose-ester-coatings
#7
Pia Willberg-Keyriläinen, Jari Vartiainen, Jani Pelto, Jarmo Ropponen
The Cellulose nanofibrils (CNF), also referred to as nanocellulose, is one of the most studied bio-based material in recent year, which has good potential in the future for packaging applications due to its excellent mechanical strength and oxygen barrier properties. In the future, CNF films may also find new applications for example in printed electronics, if the surface smoothness of CNF films can be improved. One way to improve surface smoothness is to use thin coating solutions with zero porosity, such as molar mass controlled cellulose ester coatings...
August 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28521376/-images-of-ageing-in-health-care-magazines-of-the-public-health-system
#8
Ilse Hartmann-Tews, Theresa Hoppe
Objectives Collective images of ageing influence attitudes towards ageing and health- related activities. The aim of this study was to explore images of ageing and old age in magazines published by public health institutions, namely health insurance companies and pharmacies. Design A standardized content analysis was conducted covering age-related articles (n=146) and accompanying photographs (n=218) of public health institutions. The stock of material comprises age-related articles of all magazines published 2012-2013 of 2 public health insurance companies (Allgemeine Ortskrankenkasse: "Bleib gesund", Barmer Ersatzkasse: "Gesundheit konkret"), 2 private health insurance companies (Gothaer Versicherung: "Gothaer magazin", Deutsche Krankenversicherung: "DKV impulse") and 2 consumer magazines of pharmacies ("Apothekenumschau","Senioren Ratgeber")...
May 18, 2017: Das Gesundheitswesen
https://www.readbyqxmd.com/read/28521371/evaluation-of-biological-effects-of-hydroalcoholic-extract-of-hibiscus-rosa-sinensis-flowers-on-alloxan-induced-diabetes-in-rats
#9
Mohan Pethe, Samir Yelwatkar, Smita Manchalwar, Vijay Gujar
Aim and Objective The current study sought to investigate antidiabetic, hypolipidimic, antioxidant and histopathological effects of floral extract of Hibiscus rosa sinensis in Alloxan induced Diabetes in rats. Materials and Methods Study was conducted on 6 groups with 6 wistar rats in each group for the period of 4 weeks. Group I: served as normal control (NC), rats administered with gum acacia 1 ml daily, group II: consider as diabetic control (DC) treated with alloxon 150 mg/kg body wt. Whereas Hibiscus rosa-sinensis flower extract was given orally in group III (DE1), group IV (DE2), group V (DE3) at doses of 50, 100 and 200 mg/kg body weight dissolved in distilled water respectively...
May 18, 2017: Drug Research
https://www.readbyqxmd.com/read/28520776/proteomic-analysis-of-tea-plants-camellia-sinensis-with-purple-young-shoots-during-leaf-development
#10
Qiongqiong Zhou, Zhidan Chen, Jinwook Lee, Xinghui Li, Weijiang Sun
Tea products made from purple leaves are highly preferred by consumers due to the health benefits. This study developed a proteome reference map related to color changes during leaf growth in tea (Camellia sinensis) plant with purple young shoots using two-dimensional electrophoresis (2-DE). Forty-six differentially expressed proteins were detected in the gel and successfully identified by using MALDI-TOF/TOF-MS. The pronounced changes in the proteomic profile between tender purple leaves (TPL) and mature green leaves (MGL) included: 1) the lower activity of proteins associated with CO2 assimilation, energy metabolism and photo flux efficiency and higher content of anthocyanins in TPL than those in MGL may protect tender leaves against photo-damage; 2) the higher abundance of chalcone synthase (CHS), chalcone isomerase (CHI) and flavonol synthase (FLS) likely contributes to the synthesis of anthocyanins, catechins and flavonols in TPL tissues; 3) higher abundance of stress response proteins, such as glutathione S-transferases (GST) and phospholipid hydroperoxide glutathione peroxidase (PHGPx), could enhance the tolerance of TPL tissues to adverse condition in; and 4) the increased abundance of proteins related to protein synthesis, nucleic acids and cell wall proteins should be beneficial for the proliferation and expansion of leaf cell in TPL tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28518187/in-vitro-shock-absorption-tests-on-implant-supported-crowns-influence-of-crown-materials-and-luting-agents
#11
Martin Rosentritt, Sibylle Schneider-Feyrer, Michael Behr, Verena Preis
PURPOSE: To investigate the force absorption capacity of implant-supported crowns made of different restorative materials and connected to abutments with different luting agents. MATERIALS AND METHODS: Molar crowns were milled of different computer-aided design/computer-aided manufacture materials (n = 8 crowns per material): polymethyl methacrylate, polyether ether ketone, composite, lithium disilicate, titanium, and zirconia. Crowns were mounted on titanium implant replicas using different luting agents: uncemented, temporarily cemented (zinc oxide-eugenol cement), conventionally cemented (zinc oxide phosphate cement), and adhesively bonded...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28515006/two-dimensional-multi-heart-cutting-centrifugal-partition-chromatography-liquid-chromatography-for-the-preparative-isolation-of-antioxidants-from-edelweiss-plant
#12
Léa Marlot, Magali Batteau, Marie-Claire Escofet, Sylvie Nuccio, Véronique Coquoin, René De Vaumas, Karine Faure
The Edelweiss plant has been recognized as a very valuable source of anti-aging principles due to its composition of antioxidants compounds: leontopodic acid A and 3,5-dicaffeoylquinic acid. In this work, off-line multi-heart cutting CPC-LC separation was set up at industrial scale in order to isolate and produce new high quality reference material of these two antioxidants from Edelweiss. For this purpose, CPC and HPLC methods were developed and optimized at laboratory scale and a comprehensive CPCxHPLC analysis of the crude extract was established...
April 27, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28513656/restoring-the-biophysical-properties-of-decellularized-patches-through-recellularization
#13
Gigi Chi Ting Au-Yeung, Udi Sarig, Hadar Sarig, Hanumakumar Bogireddi, Tomer Bronshtein, Limor Baruch, Avihai Spizzichino, Jacob Bortman, Boey Yin Chiang Freddy, Marcelle Machluf, Subbu S Venkatraman
Various extracellular matrix (ECM) scaffolds, isolated through decellularization, were suggested as ideal biomimetic materials for 'Functional tissue engineering' (FTE). The decellularization process comprises a compromise between damaging and preserving the ultrastructure and composition of ECM-previously shown to affect cell survival, proliferation, migration, organization, differentiation and maturation. Inversely, the effects of cells on the ECM constructs' biophysical properties, under physiological-like conditions, remain still largely unknown...
May 17, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28511814/evaluation-of-the-influence-of-mechanical-activation-on-physical-and-chemical-properties-of-municipal-solid-waste-incineration-sludge
#14
V Caprai, M V A Florea, H J H Brouwers
Despite numerous studies concerning the application of by-products in the construction field, municipal solid waste incineration (MSWI) residues are not widely used as secondary building materials. In some European countries, washing treatment to the full bottom ash (BA) fraction (0-32 mm) is applied, isolating more contaminated particles, smaller than 0.063 mm. Therefore, a MWSI sludge is produced, having a high moisture content, and thus a limited presence of soluble species. In order to enhance its performance as building material, here, dry mechanical activation is applied on MSWI sludge...
May 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28511303/-association-of-xrcc1-gene-polymorphism-and-low-dose-ionizing-radiation-with-peripheral-blood-lymphocyte-micronucleus
#15
F Yang, P Xiong, X L Yuan, C R Liu, L J Ran, Y Yang, J Y Li
Objective: To explore the effects of X-ray repair cross complementing gene 1 (XRCC1) polymorphism and low dose ionizing radiation exposure on radiology professionals' peripheral blood lymphocyte micronucleus. Methods: A matched case-control study was designed. From 2013 to 2015, 1 102 radiology professionals with micronucleus test rusults, and 45 cases with present micronucleus were enroled into case group. 180 diagnostic radiology technicians detecting no micronucleus were chosen as control group, cases and controls were 1∶4 mached on gender, age ≤40 or >40 years old...
March 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28510082/biomedical-applications-of-nanotechnology
#16
REVIEW
Ana P Ramos, Marcos A E Cruz, Camila B Tovani, Pietro Ciancaglini
The ability to investigate substances at the molecular level has boosted the search for materials with outstanding properties for use in medicine. The application of these novel materials has generated the new research field of nanobiotechnology, which plays a central role in disease diagnosis, drug design and delivery, and implants. In this review, we provide an overview of the use of metallic and metal oxide nanoparticles, carbon-nanotubes, liposomes, and nanopatterned flat surfaces for specific biomedical applications...
April 2017: Biophysical Reviews
https://www.readbyqxmd.com/read/28509869/experimental-approach-for-the-uncertainty-assessment-of-3d-complex-geometry-dimensional-measurements-using-computed-tomography-at-the-mm-and-sub-mm-scales
#17
Roberto Jiménez, Marta Torralba, José A Yagüe-Fabra, Sinué Ontiveros, Guido Tosello
The dimensional verification of miniaturized components with 3D complex geometries is particularly challenging. Computed Tomography (CT) can represent a suitable alternative solution to micro metrology tools based on optical and tactile techniques. However, the establishment of CT systems' traceability when measuring 3D complex geometries is still an open issue. In this work, an alternative method for the measurement uncertainty assessment of 3D complex geometries by using CT is presented. The method is based on the micro-CT system Maximum Permissible Error (MPE) estimation, determined experimentally by using several calibrated reference artefacts...
May 16, 2017: Sensors
https://www.readbyqxmd.com/read/28507457/evaluating-the-performance-of-tg-43-protocol-in-esophageal-hdr-brachytherapy-viewpoint-to-trachea-inhomogeneity
#18
Seyed Mohsen Hosseini Daghigh, Hamid Reza Baghani, Seyed Mahmoud Reza Aghamiri, Seyed Rabi Mahdavi
AIM: The aim of this study is to evaluate the effect of air within trachea on dose calculations of esophageal HDR brachytherapy treatment planning. BACKGROUND: Dose calculations in esophageal HDR brachytherapy treatment planning systems are greatly based on TG-43 protocol which in all materials are considered to be water equivalent. MATERIALS AND METHODS: A cylindrical PMMA phantom with a tube in the center (neck equivalent phantom) accompanied by Flexitron HDR brachytherapy system was used in this study...
July 2017: Reports of Practical Oncology and Radiotherapy
https://www.readbyqxmd.com/read/28507369/nature-scope-and-use-of-economic-evaluation-of-healthcare-programmes-with-special-reference-to-pakistan
#19
Muhammad Ashar Malik, Saleem Perwaiz Iqbal, Farina Gul Abrejo
Economic evaluation (EE)/cost effectiveness analysis(CEA) of healthcare programmes is an emerging area, yet the resource base to apprehend EE/CEA is very limited in Pakistan. This paper attempts to fill this gap by providing a basic text in the field of EE with special reference to Pakistan. We used four dimensional criteria (available, relevant, complete and accurate) for reviewing the EE contents in the locally available textbooks and reading material on public health. We find CEA as core competency and skill of medical doctors in undergraduate medical curricula yet we could not find EE contents in the recommended textbooks...
May 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28506656/colorizing-titanium-6aluminum-4vanadium-alloy-using-electrochemical-anodization-developing-a-color-chart
#20
Chandur Wadhwani, Marco Brindis, Mathew Kattadiyil, Richard O'Brien, Kwok-Hung Chung
Colorizing titanium alloys by electrochemical anodization is used in dentistry especially for identification purposes. Colorization is the result of distinct voltage applications to specific titanium alloys when placed in an electrolyte. Titanium and titanium alloys differ in their ability to be anodized. As titanium-6aluminum-4vanadium is commonly used as an abutment material, we have developed a specific color reference scale relating color to the voltage applied.
May 12, 2017: Journal of Prosthetic Dentistry
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