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Medical engineering

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https://www.readbyqxmd.com/read/27921218/from-problem-solving-to-problem-definition-scrutinizing-the-complex-nature-of-clinical-practice
#1
Sayra Cristancho, Lorelei Lingard, Glenn Regehr
In medical education, we have tended to present problems as being singular, stable, and solvable. Problem solving has, therefore, drawn much of medical education researchers' attention. This focus has been important but it is limited in terms of preparing clinicians to deal with the complexity of the 21st century healthcare system in which they will provide team-based care for patients with complex medical illness. In this paper, we use the Soft Systems Engineering principles to introduce the idea that in complex, team-based situations, problems usually involve divergent views and evolve with multiple solution iterations...
December 5, 2016: Perspectives on Medical Education
https://www.readbyqxmd.com/read/27920940/3d-printing-in-neurosurgery-a-systematic-review
#2
REVIEW
Michael Randazzo, Jared M Pisapia, Nickpreet Singh, Jayesh P Thawani
BACKGROUND: The recent expansion of three-dimensional (3D) printing technology into the field of neurosurgery has prompted a widespread investigation of its utility. In this article, we review the current body of literature describing rapid prototyping techniques with applications to the practice of neurosurgery. METHODS: An extensive and systematic search of the Compendex, Scopus, and PubMed medical databases was conducted using keywords relating to 3D printing and neurosurgery...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27918487/integrating-deoxyribozymes-into-colorimetric-sensing-platforms
#3
REVIEW
Dingran Chang, Sandy Zakaria, Mimi Deng, Nicholas Allen, Kha Tram, Yingfu Li
Biosensors are analytical devices that have found a variety of applications in medical diagnostics, food quality control, environmental monitoring and biodefense. In recent years, functional nucleic acids, such as aptamers and nucleic acid enzymes, have shown great potential in biosensor development due to their excellent ability in target recognition and catalysis. Deoxyribozymes (or DNAzymes) are single-stranded DNA molecules with catalytic activity and can be isolated to recognize a wide range of analytes through the process of in vitro selection...
December 3, 2016: Sensors
https://www.readbyqxmd.com/read/27916652/exploring-pericyte-and-cardiac-stem-cell-secretome-unveils-new-tactics-for-drug-discovery
#4
REVIEW
Georgina M Ellison-Hughes, Paolo Madeddu
Ischaemic diseases remain a major cause of morbidity and mortality despite continuous advancements in medical and interventional treatments. Moreover, available drugs reduce symptoms associated with tissue ischaemia, without providing a definitive repair. Cardiovascular regenerative medicine is an expanding field of research that aims to improve the treatment of ischaemic disorders through restorative methods, such as gene therapy, stem cell therapy, and tissue engineering. Stem cell transplantation has salutary effects through direct and indirect actions, the latter being attributable to growth factors and cytokines released by stem cells and influencing the endogenous mechanisms of repair...
December 1, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27916124/alkaline-phosphatase-fused-repebody-as-a-new-format-of-immuno-reagent-for-an-immunoassay
#5
Hyo-Deok Seo, Joong-Jae Lee, Yu Jung Kim, Oliver Hantschel, Seung-Goo Lee, Hak-Sung Kim
Enzyme-linked immunoassays based on an antibody-antigen interaction are widely used in biological and medical sciences. However, the conjugation of an enzyme to antibodies needs an additional chemical process, usually resulting in randomly cross-linked molecules and a loss of the binding affinity and enzyme activity. Herein, we present the development of an alkaline phosphatase-fused repebody as a new format of immuno-reagent for immunoassays. A repebody specifically binding to human TNF-α (hTNF-α) was selected through a phage display, and its binding affinity was increased up to 49 nM using a modular engineering approach...
January 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27915023/anisotropic-noble-metal-nanoparticles-synthesis-surface-functionalization-and-applications-in-biosensing-bioimaging-drug-delivery-and-theranostics
#6
REVIEW
Gokul Paramasivam, Namitharan Kayambu, Arul Maximus Rabel, Ashok K Sundramoorthy, Anandhakumar Sundaramurthy
Anisotropic nanoparticles have fascinated scientists and engineering communities for over a century because of their unique physical and chemical properties. In recent years, continuous advances in design and fabrication of anisotropic nanoparticles have opened new avenues for application in various areas of biology, chemistry and physics. Anisotropic nanoparticles have the plasmon absorption in the visible as well as near-infrared (NIR) region, which enable them to be used for crucial applications such as biological imaging, medical diagnostics and therapy ("theranostics")...
November 30, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27914052/applications-of-normal-mode-analysis-methods-in-computational-protein-design
#7
Vincent Frappier, Matthieu Chartier, Rafael Najmanovich
Recent advances in coarse-grained normal mode analysis methods make possible the large-scale prediction of the effect of mutations on protein stability and dynamics as well as the generation of biologically relevant conformational ensembles. Given the interplay between flexibility and enzymatic activity, the combined analysis of stability and dynamics using the Elastic Network Contact Model (ENCoM) method has ample applications in protein engineering in industrial and medical applications such as in computational antibody design...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27913366/deepr-a-convolutional-net-for-medical-records
#8
Phuoc Nguyen, Truyen Tran, Nilmini Wickramasinghe, Svetha Venkatesh
Feature engineering remains a major bottleneck when creating predictive systems from electronic medical records. At present, an important missing element is detecting predictive regular clinical motifs from irregular episodic records. We present Deepr (short for Deep record), a new end-to-end deep learning system that learns to extract features from medical records and predicts future risk automatically. Deepr transforms a record into a sequence of discrete elements separated by coded time gaps and hospital transfers...
December 1, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/27909940/enhancement-of-rapamycin-production-by-metabolic-engineering-in-streptomyces-hygroscopicus-based-on-genome-scale-metabolic-model
#9
Lanqing Dang, Jiao Liu, Cheng Wang, Huanhuan Liu, Jianping Wen
Rapamycin, as a macrocyclic polyketide with immunosuppressive, antifungal, and anti-tumor activity produced by Streptomyces hygroscopicus, is receiving considerable attention for its significant contribution in medical field. However, the production capacity of the wild strain is very low. Hereby, a computational guided engineering approach was proposed to improve the capability of rapamycin production. First, a genome-scale metabolic model of Streptomyces hygroscopicus ATCC 29253 was constructed based on its annotated genome and biochemical information...
December 1, 2016: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/27909510/interactive-in-vitro-training-in-physics-of-radiofrequency-ablation-for-physicians-and-medical-engineering-students
#10
REVIEW
Haber T, Kleister G, Selman B, Härtig J, Melichercik J, Ismer B
Radiofrequency (RF) ablation requires a complex set of devices as well as profound electrophysiological experience and substantial knowledge of physical science basics. To establish RF ablation in-vitro teaching-system, six workstations were equipped with computer-controlled RF ablation generators. Universal connection boxes allow ablation-essays with catheters of different make and model. Special wetlabs were developed combining a basin containing isotonic saline solution with a thermostat and a pump to simulate blood flow...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27908880/an-anti-cd3-anti-cll-1-bispecific-antibody-for-the-treatment-of-acute-myeloid-leukemia
#11
Steven R Leong, Siddharth Sukumaran, Maria Hristopoulos, Klara Totpal, Shannon Stainton, Elizabeth Lu, Alfred Wong, Lucinda Tam, Robert Newman, Brian R Vuillemenot, Diego Ellerman, Chen Gu, Mary Mathieu, Mark S Dennis, Allen Nguyen, Bing Zheng, Crystal Zhang, Genee Lee, Yu-Waye Chu, Rodney A Prell, Kedan Lin, Steven T Laing, Andrew G Polson
Acute myeloid leukemia (AML) is major unmet medical need. Most patients have poor long-term survival and treatment has not significantly changed in 40 years. Recently, bispecific antibodies that redirect the cytotoxic activity of effector T-cells by binding to CD3, the signaling component of the T-cell receptor, and a tumor target have shown clinical activity. Notably, blinatumomab is approved to treat relapsed/refractory acute lymphoid leukemia. Here we describe the design, discovery, pharmacological activity, pharmacokinetics, and safety of a CD3 T-cell-dependent bispecific (TDB) full-length human IgG1 therapeutic antibody targeting CLL-1 that could potentially be used in humans to treat AML...
December 1, 2016: Blood
https://www.readbyqxmd.com/read/27908256/a-review-on-nano-antimicrobials-metal-nanoparticles-methods-and-mechanisms
#12
Edris Hoseinzadeh, Pouran Makhdoumi, Parisa Taha, John Stelling, Hooshyar Hossini, Mohammad Amjad Kamal, Ghulam Md Ashraf
Nanotechnology is a scientific and engineering technology conducted at the Nano-scale, such as in the fields of compound fabric manufacturing, food processing, agricultural processing, and engineering, as well as in medical and medicinal application. In recent decade, nanomaterial applications for antimicrobial works have been interested by many researchers. Available reports show that some of the metal oxide Nanoparticles including; Al2O3, TiO2, ZnO, CuO, Co3O4, In2O3, MgO, SiO2, ZrO2, Cr2O3, Ni2O3, Mn2O3, CoO, and Nickel oxide have toxicity toward several microorganisms and they could successfully kill numerous bacteria...
December 1, 2016: Current Drug Metabolism
https://www.readbyqxmd.com/read/27907985/effectiveness-of-training-intervention-to-improve-medical-student-s-information-literacy-skills
#13
Mohammadhiwa Abdekhoda, Afsaneh Dehnad, Mahmood Yousefi
This study aimed to assess the efficiency of delivering a 4-month course of "effective literature search" among medical postgraduate students for improving information literacy skills. This was a cross-sectional study in which 90 postgraduate students were randomly selected and participated in 12 training sessions. Effective search strategies were presented and the students' attitude and competency concerning online search were measured by a pre- and post-questionnaires and skill tests. Data were analyzed by SPSS version 16 using t-test...
December 2016: Korean Journal of Medical Education
https://www.readbyqxmd.com/read/27903952/how-readable-is-bph-treatment-information-on-the-internet-assessing-barriers-to-literacy-in-prostate-health
#14
Kevin Koo, Ronald L Yap
Information about benign prostatic hyperplasia (BPH) has become increasingly accessible on the Internet. Though the ability to find such material is encouraging, its readability and impact on informing patient decision making are not known. To evaluate the readability of Internet-based information about BPH in the context of website ownership and Health on the Net certification, three search engines were queried daily for 1 month with BPH-related keywords. Website ownership data and Health on the Net certification status were verified...
November 29, 2016: American Journal of Men's Health
https://www.readbyqxmd.com/read/27900744/-developing-and-verifying-the-validity-and-reliability-of-the-electronic-menopausal-health-screen-system
#15
Pei-Shan Lee, Chyi-Long Lee, Chieh-Yu Liu, Wen-Chin Chen, Yen-Yen Yu, Lee-Ing Tsao
BACKGROUND: Menopausal women are in a transitional phase between health and sickness. Although the highest standards of menopausal care include clinical assessment and patient education on menopausal symptoms, current practices lack integrated care that aim to prevent chronic diseases for which menopause is a predisposing factor. PURPOSE: To integrate menopausal disturbances; to evaluate the risk factors for osteoporosis, cardiovascular disease, and diabetes; and to create a reliable and effective electronic menopausal health screen system (EMHSS)...
December 2016: Hu Li za Zhi the Journal of Nursing
https://www.readbyqxmd.com/read/27898187/tissue-engineering-acellular-scaffolds-the-significant-influence-of-physical-and-procedural-decellularization-factors
#16
F Starnecker, F Koenig, C Hagl, N Thierfelder
The importance of decellularized medical products has significantly increased during the last years. In this paper, we evaluated the effects of selected physical and procedural decellularization (DC) factors with the aim to systematically assess their influence on DC results. 72 porcine aortic walls (AW) were divided into three groups and exposed to a DC solution for 4 h and 8 h, either continuously or in repeated cycles. The AW were rocked (90bpm), whirled (10 l/min), sonicated (120W, 45 kHz) or exposed to a combination of these treatments, followed by 10 washing cycles...
November 29, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27894030/fatigue-in-hospital-nurses-supernurse-culture-is-a-barrier-to-addressing-problems-a-qualitative-interview-study
#17
Linsey M Steege, Jessica G Rainbow
BACKGROUND: Fatigue in hospital nurses is associated with decreased nurse satisfaction, increased turnover and negative patient outcomes. Addressing fatigue in nurses has been identified as a priority by many organizations worldwide in an effort to promote both a culture of patient safety and a healthy nursing workforce. OBJECTIVES: The overall aim of this study was to explore barriers and facilitators within the hospital nurse work system to nurse coping and fatigue...
November 21, 2016: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/27891345/voluntary-blood-donation-among-students-a-cross-sectional-study-on-knowledge-and-practice-vs-attitude
#18
Babita Raghuwanshi, Nand K Pehlajani, Mithilesh K Sinha
INTRODUCTION: The factors influencing blood donation decisions are varied and complex and one's attitude can influence this decision. AIM: To find the factors affecting the knowledge and practice of blood donation among college students and their attitude towards the same. MATERIALS AND METHODS: This cross-sectional study was conducted among 399 college going students using convenience sampling from medical, nursing and engineering colleges in Bhubaneswar city, where blood donation camps were to be held...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27890119/how-do-health-service-professionals-consider-human-factors-when-purchasing-interactive-medical-devices-a-qualitative-interview-study
#19
Christopher James Vincent, Ann Blandford
We present findings of a UK study into how those involved in purchasing interactive medical devices go about evaluating usability, the challenges that arise, and opportunities for improvement. The study focused on procurement of infusion devices because these are used by various professionals across healthcare. A semi-structured interview study was carried out involving a range of stakeholders (20 in total) involved in or impacted by medical device procurement. Data was analysed using thematic analysis, a qualitative method designed to support the identification, analysis and reporting of patterns...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27888821/effect-of-adenoid-hypertrophy-and-pulmonary-function-tests-in-children-with-mild-asthma
#20
Merve Aykan, Sedat Aydın, Sedat Öktem, Mehmet Gökhan Demir, Engin Tutar
OBJECTIVES: This study aims to assess the effect of adenoid hypertrophy on asthma in children with mild asthma. PATIENTS AND METHODS: Between September 2010 and September 2012, 63 children (42 males, 21 females; median age 10.5 years; range 6 to 14 years) admitted to our clinic with asthma complaint were included in this study. These children were evaluated for adenoid hypertrophy, symptoms of asthma, medical treatment, pulmonary function tests at the beginning of the study and at the end of second month...
September 2016: Kulak Burun Boğaz Ihtisas Dergisi: KBB, Journal of Ear, Nose, and Throat
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