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https://www.readbyqxmd.com/read/28106517/traditional-invasive-and-synchrotron-based-non-invasive-assessments-of-3d-printed-hybrid-cartilage-constructs
#1
Adeola Deborah Olubamiji, Ning Zhu, Tuanjie Chang, Chijioke Nwankwo, Zohreh Izadifar, Ali Honaramooz, Daniel Chen, B Frank Eames
Three-dimensional (3D)-printed constructs made of polycaprolactone (PCL) and chondrocyte-impregnated alginate hydrogel (hybrid cartilage constructs) mimic the biphasic nature of articular cartilage, offering promise for cartilage tissue engineering (CTE) applications. However, the regulatory pathway for medical device development requires validation of such constructs through in vitro bench tests and in vivo preclinical examinations premarket approval. Furthermore, non-invasive imaging techniques are required for effective evaluation of the progress of these cartilage constructs, especially when implanted in animal models or human subjects...
January 20, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28103515/strong-synergistic-effects-in-pla-pcl-blends-impact-of-pla-matrix-viscosity
#2
Aleksandra Ostafinska, Ivan Fortelný, Jiří Hodan, Sabina Krejčíková, Martina Nevoralová, Jana Kredatusová, Zdeněk Kruliš, Jiří Kotek, Miroslav Šlouf
Blends of two biodegradable polymers, poly(lactic acid) (PLA) and poly(ϵ-caprolactone) (PCL), with strong synergistic improvement in mechanical performance were prepared by melt-mixing using the optimized composition (80/20) and the optimized preparation procedure (a melt-mixing followed by a compression molding) according to our previous study. Three different PLA polymers were employed, whose viscosity decreased in the following order: PLC ≈ PLA1 > PLA2 > PLA3. The blends with the highest viscosity matrix (PLA1/PCL) exhibited the smallest PCL particles (d∼0...
January 10, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28103165/burn-wound-healing-present-concepts-treatment-strategies-and-future-directions
#3
A Oryan, E Alemzadeh, A Moshiri
Burns are the most extensive forms of soft tissue injuries occasionally resulting in extensive and deep wounds and death. Burns can lead to severe mental and emotional distress, because of excessive scarring and skin contractures. Treatment of burns has always been a difficult medical problem and many different methods have been used to treat such injuries, locally. Biofilms are a collection of microorganisms that delay wound healing. One of the new methods of prevention and treatment of burn wound infections is application of antimicrobials, which act on biofilms and prevent the wound infection...
January 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28101640/labia-minora-hypertrophy-causes-impact-on-women-s-health-and-treatment-options
#4
Caterina Gulia, Andrea Zangari, Vito Briganti, Zhoobin H Bateni, Alessandro Porrello, Roberto Piergentili
INTRODUCTION AND HYPOTHESIS: We provide a review of the literature about the onset and development of hypertrophy of the labia minora, together with some expert opinions on the appropriateness of labiaplasty. METHODS: We searched PubMed and used popular search engines, with a greater emphasis on the physiology and hormone-mediated metabolism of these structures, and less emphasis on their surgical treatment. RESULTS: We describe major embryological, cytological, and biochemical features of this anatomical part and summarize the clinical aspects of its hypertrophy, evaluating types of discomfort reported by women and the medical treatments available...
January 18, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28096709/communication-pitfalls-of-traditional-history-and-physical-write-up-documentation
#5
Jeffrey L Brown
BACKGROUND: An unofficial standardized "write-up" outline is commonly used for documenting history and physical examinations, giving oral presentations, and teaching clinical skills. Despite general acceptance, there is an apparent discrepancy between the way clinical encounters are conducted and how they are documented. METHODS: Fifteen medical school websites were randomly selected from search-engine generated lists. One example of a history and physical write-up from each of six sites, one teaching outline from each of nine additional sites, and recommendations for documentation made in two commonly used textbooks were compared for similarities and differences...
2017: Advances in Medical Education and Practice
https://www.readbyqxmd.com/read/28091347/changes-in-the-seroprevalence-of-cysticercosis-in-suspected-patients-in-chandigarh-india-between-1998-and-2014-analysis-of-17-years-of-data
#6
L J Robertson, H Joshi, K S Utaaker, A Kumar, S Chaudhary, K Goyal, R Sehgal
Changes in seroprevalence of cysticercosis diagnosed in Chandigarh, India between 1998 and 2014 were investigated by extraction and analysis of data from records held at the Postgraduate Institute of Medical Education and Research in Chandigarh. Among the total number of samples for which cysticercosis had been suspected during this period (N = 9650), 1716 (17·8%) were seropositive. Adults were more likely to be seropositive than children, and women were more likely to be seropositive than men. In addition to there being fewer patients with suspicion of cysticercosis over the data analysis period, the proportion of patients seropositive also reduced significantly...
January 16, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28090771/differential-adhesive-bioactive-properties-of-polymeric-surface-coated-with-graphene-oxide-thin-film
#7
Sudhin Thampi, A Maya Nandkumar, Vignesh Muthuvijayan, Ramesh Parameswaran
Surface engineering of implantable devices involving polymeric biomaterials has become an essential aspect for medical implants. Surface enhancement technique can provide an array of unique surface properties that improves its biocompatibility and functionality as an implant. Polyurethane based implants that have found extensively acclaimed usage as an implant in biomedical applications, especially in the area of cardiovascular devices still lacks any mechanism to ward off bacterial or platelet adhesion. To bring out such a defense mechanism we are proposing a surface modification technique...
January 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28088527/navigation-in-the-electronic-health-record-a-review-of-the-safety-and-usability-literature
#8
REVIEW
Lisette C Roman, Jessica S Ancker, Stephen B Johnson, Yalini Senathirajah
OBJECTIVE: Inefficient navigation in electronic health records has been shown to increase users' cognitive load, which may increase potential for errors, reduce efficiency, and increase fatigue. However, navigation has received insufficient recognition and attention in the electronic health record (EHR) literature as an independent construct and contributor to overall usability. Our aims in this literature review were to (1) assess the prevalence of navigation-related topics within the EHR usability and safety research literature, (2) categorize types of navigation actions within the EHR, (3) capture relationships between these navigation actions and usability principles, and (4) collect terms and concepts related to EHR navigation...
January 11, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28080206/probiotics-d-lactic-acidosis-oxidative-stress-and-strain-specificity
#9
Luis Vitetta, Samantha Coulson, Michael Thomsen, Tony Nguyen, Sean Hall
1. The existence of an implicit living microscopic world, composed primarily of bacteria, has been known for centuries. The exact mechanisms that govern the contribution of bacteria to human health and disease have only recently become the subject of intense research efforts. Within this very evident shift in paradigms, the rational design of probiotic formulations has led to the creation of an industry that seeks to progress the engineering of probiotic bacteria that produce metabolites that may enhance human host health and prevent disease...
January 12, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28079984/medical-application-of-glycosaminoglycans-a-review
#10
REVIEW
Alexander Köwitsch, Guoying Zhou, Thomas Groth
The characteristic molecular composition of the different glycosaminoglycans (GAG) is related to their role as structural components and regulators of a multitude of functions of proteins, cells and tissues in the human body. Therefore, it is not surprising that GAG are widely used as coating materials for implants, components of 3D-constructs like tissue engineering scaffolds and hydrogels, but also as diagnostic devices like biosensors and in controlled release applications. Beside a physisorption or encapsulation of GAG, these applications often require their chemical modification to allow a stable covalent attachment on surfaces or cross-linking reactions with other molecules...
January 12, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28078529/rethinking-preconception-care-a-critical-women-s-health-perspective
#11
Erika L Thompson, Coralia Vázquez-Otero, Cheryl A Vamos, Stephanie L Marhefka, Nolan S Kline, Ellen M Daley
Objectives Preconception care aims to provide care to reproductive aged individuals in order to improve pregnancy and birth outcomes. Given that preconception care is a public health priority, it is important to evaluate the evolution of this health paradigm and the promotion of preconception messages that are obtained by the public. We identified online preconception health messages, which were critically assessed through a women's health perspective. Methods We searched for "preconception care" on three major search engines...
January 11, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28076316/changes-of-thyroid-hormonal-status-in-patients-receiving-ketogenic-diet-due-to-intractable-epilepsy
#12
Engin Kose, Orkide Guzel, Korcan Demir, Nur Arslan
BACKGROUND: Ketogenic diet (KD), which is high in fat and low in carbohydrates, mimics the metabolic state of starvation and is used therapeutically for pharmacoresistant epilepsy. It is known that generation of triiodothyronine (T3) from thyroxine (T4) decreases during fasting periods. The aim of this study was to evaluate the thyroid function of children receiving KD for at least 1 year due to drug-resistant epilepsy. METHODS: A total of 120 patients [63 males, 52...
January 11, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28075698/older-adults-and-management-of-medical-devices-in-the-home-five-requirements-for-appropriate-use
#13
Sara C Keller, Ayse P Gurses, Nicole Werner, Dawn Hohl, Ashley Hughes, Bruce Leff, Alicia I Arbaje
Medical devices, or instruments or tools to manage disease, are increasingly used in the home, yet there have been limited evaluations of how older adults and caregivers safely use these devices. This study concerns a qualitative evaluation of (1) barriers and facilitators of appropriate use, and (2) outcomes of inappropriate use, among older adults at the transition from hospital to home with skilled home health care (SHHC). Guided by a human factors engineering work system model, the authors (1) conducted direct observations with contextual inquiry of the start-of-care or resumption-of-care SHHC provider visit, and (2) semi-structured interviews with 24 older adults and their informal caregivers, and 39 SHHC providers and administrators...
January 11, 2017: Population Health Management
https://www.readbyqxmd.com/read/28070773/challenges-and-opportunities-building-a-relationship-between-a-department-of-biomedical-engineering-and-a-medical-school
#14
EDITORIAL
Steven C George, M Elizabeth Meyerand
A department of biomedical engineering can significantly enhance the impact of their research and training programs if a productive relationship with a medical school can be established. In order to develop such a relationship, significant hurdles must be overcome. This editorial summarizes some of the major challenges and opportunities for a department of biomedical engineering as they seek to build or enhance a relationship with a medical school. The ideas were formulated by engaging the collective wisdom from the Council of Chairs of the biomedical engineering departments...
January 9, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28068065/sustained-nitric-oxide-release-from-a-tertiary-s-nitrosothiol-based-polyphosphazene-coating
#15
Alec Lutzke, Jesus B Tapia, Megan J Neufeld, Melissa M Reynolds
Nitric oxide (NO) occurs naturally in mammalian biochemistry as a critical signaling molecule and exhibits antithrombotic, antibacterial, and wound-healing properties. NO-forming biodegradable polymers have been utilized in the development of antithrombotic or antibacterial materials for biointerfacial applications, including tissue engineering and the fabrication of erodible coatings for medical devices such as stents. Use of such NO-forming polymers has frequently been constrained by short-term release or limited NO storage capacity and has led to the pursuit of new materials with improved NO release function...
January 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28065957/the-effect-of-educational-internships-on-medical-students-perceptions-of-plastic-surgery
#16
Andac Aykan, Engin Kurt, Sedat Avsar, Muhitdin Eski, Serdar Ozturk
OBJECTIVE: To investigate the effects of plastic, reconstructive and aesthetic surgery educational internships on medical students' perceptions of the scope of plastic surgery. METHODS: This cross-sectional study was conducted at the Gulhane Medical Faculty, Ankara, Turkey, from 2012 to 2013, and comprised 4th-, 5th- and 6th-year medical students. Students were given a questionnaire consisting of 28 questions related to maxillofacial and upper and lower extremity medical conditions, and skin, aesthetic and congenital anomalies...
January 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28065772/multimorbidity-in-middle-aged-adults-with-cerebral-palsy
#17
Nicole Cremer, Edward A Hurvitz, Mark D Peterson
BACKGROUND: Individuals with cerebral palsy have less lean body mass, greater relative adiposity, and lower fitness and physical activity participation; and yet, the prevalence of age-related multimorbidity in this population has yet to be established. PURPOSE: To examine the prevalence of lifestyle-related chronic conditions and multimorbidity in a sample of middle-aged adults with cerebral palsy. METHODS: A clinic-based sample of middle-aged adults with cerebral palsy was examined using Electronic Medical Records Search Engine (EMERSE) software...
January 5, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28064006/versatile-rna-tetra-u-helix-linking-motif-as-a-toolkit-for-nucleic-acid-nanotechnology
#18
My N Bui, M Brittany Johnson, Mathias Viard, Emily Satterwhite, Angelica N Martins, Zhihai Li, Ian Marriott, Kirill A Afonin, Emil F Khisamutdinov
RNA nanotechnology employs synthetically modified ribonucleic acid (RNA) to engineer highly stable nanostructures in one, two, and three dimensions for medical applications. Despite the tremendous advantages in RNA nanotechnology, unmodified RNA itself is fragile and prone to enzymatic degradation. In contrast to use traditionally modified RNA strands e.g. 2'-fluorine, 2'-amine, 2'-methyl, we studied the effect of RNA/DNA hybrid approach utilizing a computer-assisted de novo RNA tetra-uracil (tetra-U) motif as a toolkit to address questions related to assembly efficiency, versatility, stability, and the production costs of hybrid RNA/DNA nanoparticles...
January 4, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28059256/ultra-broadband-mid-ir-supercontinuum-generation-in-ge-sub-11-5-sub-as-sub-24-sub-se-sub-64-5-sub-based-chalcogenide-graded-index-photonic-crystal-fiber-design-and-analysis
#19
A G N Chaitanya, Than Singh Saini, Ajeet Kumar, Ravindra Kumar Sinha
In this paper, we report design and numerical analysis of a Ge<sub>11.5</sub>As<sub>24</sub>Se<sub>64.5</sub> based chalcogenide glass graded-index photonic crystal fiber structure for mid-IR ultra broadband supercontinuum generation. The proposed dispersion engineered photonic crystal fiber offers a zero dispersion wavelength at a pump wavelength of 2.8 μm. To simulate the supercontinuum generation spectrum, the orders of dispersion coefficient up to the ninth order are considered...
December 20, 2016: Applied Optics
https://www.readbyqxmd.com/read/28058727/exppning-how-acetylcholine-improves-gait-in-parkinson-s-disease-an-editorial-highlight-for-deletion-of-the-vesicular-acetylcholine-transporter-from-pedunculopontine-laterodorsal-tegmental-neurons-modifies-gait
#20
EDITORIAL
Björn Falkenburger
Gait impairment is one of the most intractable symptoms of Parkinson's disease, responding poorly to dopaminergic medication. Promising therapeutic strategies include deep brain stimulation (DBS) of the pedunculopontine nucleus (PPN) and enhancing cholinergic neurotransmission by acetylcholine esterase inhibitors. This Editorial discusses an elegant study by Janickova and coworkers in the current issue of the Journal of Neurochemistry, in which the authors engineered mice lacking cholinergic transmission selectively in the PPN and demonstrate that cholinergic neurons of the PPN are critical for gait...
January 6, 2017: Journal of Neurochemistry
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