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https://www.readbyqxmd.com/read/28532138/a-case-based-shared-teaching-approach-in-undergraduate-medical-curriculum-a-way-for-integration-in-basic-and-clinical-sciences
#1
Soheil Peiman, Azim Mirzazadeh, Maryam Alizadeh, Sara Mortaz Hejri, Mohammad-Taghi Najafi, Abbas Tafakhori, Farnoosh Larti, Besharat Rahimi, Babak Geraiely, Parichehr Pasbakhsh, Gholamreza Hassanzadeh, Fatemeh Nabavizadeh Rafsanjani, Mohammad Ansari, Seyed Farshad Allameh
To present a multiple-instructor, active-learning strategy in the undergraduate medical curriculum. This educational research is a descriptive one. Shared teaching sessions, were designed for undergraduate medical students in six organ-system based courses. Sessions that involved in-class discussions of integrated clinical cases were designed implemented and moderated by at least 3 faculties (clinicians and basic scientists). The participants in this study include the basic sciences medical students of The Tehran University of Medical Sciences...
April 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28532118/facile-synthesis-of-polymeric-fluorescent-organic-nanoparticles-based-on-the-self-polymerization-of-dopamine-for-biological-imaging
#2
Yingge Shi, Ruming Jiang, Meiying Liu, Lihua Fu, Guangjian Zeng, Qing Wan, Liucheng Mao, Fengjie Deng, Xiaoyong Zhang, Yen Wei
Polymeric fluorescent organic nanoparticles (polymer-FONs) have raised considerable research attention for biomedical applications owing to their advantages as compared with fluorescent inorganic nanoparticles and small organic molecules. In this study, we presented an efficient, facile and environment-friendly strategy to produce polymer-FONs, which relied on the self-polymerization of dopamine and polyethyleneimine (PEI) in rather mild conditions. To obtain the final polymer-FONs, aldehyde group-containing copolymers (named as poly(UA-co-PEGMA)) were synthesized by reversible addition-fragmentation chain-transfer polymerization using polyethylene glycol methyl ether methacrylate (PEGMA) and 1-undecen-10-al (UA) as monomers...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532088/mussel-inspired-surface-modification-of-titania-nanotubes-as-a-novel-drug-delivery-system
#3
Negin Khoshnood, Ali Zamanian, Abouzar Massoudi
Titania nanotubes (TNTs) have attracted considerable attention for the development of new devices for local drug delivery applications. In this study TNTs were synthesized by hydrothermal method from titania nanoparticles and then the surface of TNTs were functionalized by in situ polymerization of bioinspired polydopamine (PDA). The proposed strategies emphasized on remarkable properties of these materials and their unique combination to design local drug delivery system with advanced performance. The samples were characterized using Transmission Electron Microscope (TEM), Field Emission Scanning Electron Microscope (FESEM), X-ray diffraction pattern (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and surface area analysis (BET)...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532085/mesoporous-nano-bioglass-designed-for-the-release-of-imatinib-and-in-vitro-inhibitory-effects-on-cancer-cells
#4
Muhammad Shoaib, Aamer Saeed, Muhammad Saif Ur Rahman, Muhammad Moazzam Naseer
For treating bone cancer, controlled drug delivery is an important strategy. Bioactive scaffolds are widely used biomaterials due to their usefulness in localized drug delivery. The aim of this study was to develop mesoporous bioglass (MBG) with improved bioactivity and controllable drug delivery rate. By using pluronic 123 (P123) as a template, a facile sol-gel route was employed for the synthesis of MBG nanoparticles (NPs). The composition of the prepared sample was estimated by using energy dispersive X-ray spectroscopy (EDX)...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532070/ribose-mediated-crosslinking-of-collagen-hydroxyapatite-hybrid-scaffolds-for-bone-tissue-regeneration-using-biomimetic-strategies
#5
Gopal Shankar Krishnakumar, Natalia Gostynska, Elisabetta Campodoni, Massimiliano Dapporto, Monica Montesi, Silvia Panseri, Anna Tampieri, Elizaveta Kon, Maurilio Marcacci, Simone Sprio, Monica Sandri
This study explores for the first time the application of ribose as a highly biocompatible agent for the crosslinking of hybrid mineralized constructs, obtained by bio-inspired mineralization of self-assembling Type I collagen matrix with magnesium-doped-hydroxyapatite nanophase, towards a biomimetic mineralized 3D scaffolds (MgHA/Coll) with excellent compositional and structural mimicry of bone tissue. To this aim, two different crosslinking mechanisms in terms of pre-ribose glycation (before freeze drying) and post-ribose glycation (after freeze drying) were investigated...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532062/polylactide-and-polycaprolactone-based-substrates-enhance-angiogenic-potential-of-human-umbilical-cord-derived-mesenchymal-stem-cells-in-vitro-implications-for-cardiovascular-repair
#6
Małgorzata Sekuła, Patrycja Domalik-Pyzik, Anna Morawska-Chochół, Sylwia Bobis-Wozowicz, Elżbieta Karnas, Sylwia Noga, Dariusz Boruczkowski, Marta Adamiak, Zbigniew Madeja, Jan Chłopek, Ewa K Zuba-Surma
Recent approaches in tissue regeneration focus on combining innovative achievements of stem cell biology and biomaterial sciences to develop novel therapeutic strategies for patients. Growing recent evidence indicates that mesenchymal stem cells harvested from human umbilical cord Wharton's jelly (hUC-MSCs) are a new valuable source of cells for autologous as well as allogeneic therapies in humans. hUC-MSCs are multipotent, highly proliferating cells with prominent immunoregulatory activity. In this study, we evaluated the impact of widely used FDA approved poly(α-esters) including polylactide (PLA) and polycaprolactone (PCL) on selected biological properties of hUC-MSCs in vitro...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532048/surface-grafting-of-eu-3-doped-luminescent-hydroxyapatite-nanomaterials-through-metal-free-light-initiated-atom-transfer-radical-polymerization-for-theranostic-applications
#7
Guangjian Zeng, Meiying Liu, Ruming Jiang, Chunning Heng, Qiang Huang, Liucheng Mao, Junfeng Hui, Fengjie Deng, Xiaoyong Zhang, Yen Wei
We reported a simple and efficient method to prepare the hydrophilic luminescent HAp polymer nanocomposites through the combination of ligand exchange and metal free light initiated surface-initiated atom transfer radical polymerization (SI-ATRP) using 10-phenylphenothiazine (PTH) as organic catalyst and 2-methacryloyloxyethyl phosphorylcholine (MPC) and itaconic acid (IA) as monomers. The biological imaging and drug delivery performance of HAp-poly(MPC-IA) nanorods were examined to evaluate their potential for biomedical applications...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532045/electrochemically-reduced-graphene-oxide-poly-glycine-composite-modified-electrode-for-sensitive-determination-of-l-dopa
#8
Venkata Narayana Palakollu, Neeta Thapliyal, Tirivashe E Chiwunze, Rajshekhar Karpoormath, Sivanandhan Karunanidhi, Srinivasulu Cherukupalli
A facile preparation strategy based on electrochemical technique for the fabrication of glycine (Poly-Gly) and electrochemically reduced graphene oxide (ERGO) composite modified electrode was developed. The morphology of the developed composite (ERGO/Poly-Gly) was investigated using field emission scanning electron microscope (FE-SEM). The composite modified glassy carbon electrode (GCE) was characterized using fourier transform-infrared (FT-IR) spectroscopy, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV)...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532036/facile-fabrication-of-pan-pdms-core-shell-nanofibers-from-synchronous-photopolymerization
#9
Qijian Niu, Xiaolei Zhu, Yunhui Tang, Jun Nie, Guiping Ma
Different from the traditional method for fabricating core-shell structure nanofiber, the PAN/PDMS nanofibers with core-shell structure (PAN as the core layer and PDMS as the shell layer) have been illustrated, which combines with the synchronous photopolymerization during emulsion electrospinning process. The morphology and structure of as-fabricated PAN/PDMS nanofibers are characterized by SEM and TEM. The composition of PAN/PDMS nanofibers is characterized by FTIR, XPS, TG, and DTG, successfully. The photopolymerization process is characterized by UV-vis spectroscopy indirectly...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532014/advanced-review-of-graphene-based-nanomaterials-in-drug-delivery-systems-synthesis-modification-toxicity-and-application
#10
REVIEW
Qi Zhang, Zhuona Wu, Ning Li, Yiqiong Pu, Bing Wang, Tong Zhang, Jiansheng Tao
The discovery of graphene, a notable achievement in the field of novel carbon nanomaterials, has triggered the worldwide exploration of the biomedical applications of this material since 2004 because of its unique properties. The two-dimensional planar structure, large surface area, chemical stability, mechanical stability, and good biocompatibility of graphene are promising for applications in drug delivery systems (DDSs). In this review, we briefly discuss the characteristics, synthesis, and modification of graphene...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532009/exploring-recent-developments-to-improve-antioxidant-anti-inflammatory-and-antimicrobial-efficacy-of-curcumin-a-review-of-new-trends-and-future-perspectives
#11
REVIEW
Zahid Hussain, Hnin Ei Thu, Muhammad Wahab Amjad, Fahad Hussain, Tarek A Ahmed, Shahzeb Khan
Curcumin derivatives have been well-documented due to their natural antioxidant, antimicrobial and anti-inflammatory activities. Curcuminoids have also gained widespread recognition due to their wide range of other activities which include anti-infective, anti-mutagenic, anticancer, anti-coagulant, antiarthrititc, and wound healing potential. Despite of having a wide range of activities, the inherent physicochemical characteristics (poor water solubility, low bioavailability, chemical instability, photodegradation, rapid metabolism and short half-life) of curcumin derivatives limit their pharmaceutical significance...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532005/non-viral-strategies-for-ocular-gene-delivery
#12
REVIEW
Ana V Oliveira, Ana M Rosa da Costa, Gabriela A Silva
The success of gene therapy relies on efficient gene transfer and stable transgene expression. The in vivo efficiency is determined by the delivery vector, route of administration, therapeutic gene, and target cells. While some requirements are common to several strategies, others depend on the target disease and transgene product. Consequently, it is unlikely that a single system is suitable for all applications. This review examines current gene therapy strategies, focusing on non-viral approaches and the use of natural polymers with the eye, and particularly the retina, as their gene delivery target...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532003/recent-development-in-cell-encapsulations-and-their-therapeutic-applications
#13
REVIEW
Jiang-Ze Wang, Zhen-Qi Ding, Feng Zhang, Wen-Bin Ye
Chronic and degenerative diseases are the main causes of death in the aging population worldwide. These diseases are currently maintained using long term administration of conventional drugs which are not curative and reduce the life quality of patients. It is urgent to develop new therapeutic approaches for the treatment of these diseases. Cell therapy that involves the injection of viable cell into patients is a promising therapeutic strategy in chronic and degenerative diseases. However, the survival of injected cells in host tissue is limited due to immunoresponse...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531966/how-do-disturbances-and-climate-effects-on-carbon-and-water-fluxes-differ-between-multi-aged-and-even-aged-coniferous-forests
#14
Xuguang Tang, Hengpeng Li, Mingguo Ma, Li Yao, Matthias Peichl, Altaf Arain, Xibao Xu, Michael Goulden
Disturbances and climatic changes significantly affect forest ecosystem productivity, water use efficiency (WUE) and carbon (C) flux dynamics. A deep understanding of terrestrial feedbacks to such effects and recovery mechanisms in forests across contrasting climatic regimes is essential to predict future regional/global C and water budgets, which are also closely related to the potential forest management decisions. However, the resilience of multi-aged and even-aged forests to disturbances has been debated for >60years because of technical measurement constraints...
May 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531962/how-geostatistics-can-help-you-find-lead-and-galvanized-water-service-lines-the-case-of-flint-mi
#15
Pierre Goovaerts
In the aftermath of Flint drinking water crisis, most US cities have been scrambling to locate all lead service lines (LSLs) in their water supply systems. This information, which is most often inaccurate or lacking, is critical to assess compliance with the Lead and Copper Rule and to plan the replacement of lead and galvanized service lines (GSLs) as currently under way in Flint. This paper presents the first geospatial approach to predict the likelihood that a home has a LSL or GSL based on neighboring field data (i...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531953/priority-pesticides-abatement-by-advanced-water-technologies-the-case-of-acetamiprid-removal-by-ozonation
#16
A Cruz-Alcalde, C Sans, S Esplugas
With the aim of exploring treatment alternatives for priority insecticide acetamiprid (ACMP) abatement, the removal of this compound from water by ozonation was studied for the first time, paying special attention to the kinetic, mechanistic and toxicological aspects of the process. The second order rate constants of reactions between ACMP and both molecular ozone (O3) and hydroxyl radicals (OH) were determined to be 0.25M(-1)s(-1) and 2.1·10(9)M(-1)s(-1), respectively. On the basis of kinetic results, the degradation of ACMP during ozonation could be well-explained by the reactivity of this pesticide with OH...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531942/target-signalling-pathways-of-natural-plant-derived-radioprotective-agents-from-treatment-to-potential-candidates-a-reverse-thought-on-anti-tumour-drugs
#17
REVIEW
Ke-Li Yun, Zhen Yu Wang
Radiation damage can occur in nuclear power plant workers when physical protections fail, which results in nuclear leakage through the protective layers. Alternatively, workers may be unable to use physical protection in time (in the case of a sudden nuclear weapons attack). In addition, patients who receive local radiotherapy and are not allowed to adopt local physical protection may experience radiation damage. Thus, protection against chemical radiation has become indispensable. In view of the side effects caused by synthetic radioprotective agents (such as amisfostine), searching for radioprotective agents from plant sources is an alternative strategy...
May 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28531930/in-reply-to-optimal-strategy-to-control-surgical-site-infection-following-deep-brain-stimulation-surgery-adequate-management-of-risk-factors-topical-application-of-vancomycin-powder-in-the-surgical-wound-and-preoperative-antibiotic-prophylaxis
#18
https://www.readbyqxmd.com/read/28531929/optimal-strategy-to-control-surgical-site-infection-following-deep-brain-stimulation-surgery-adequate-management-of-risk-factors-topical-application-of-vancomycin-powder-in-the-surgical-wound-and-preoperative-antibiotic-prophylaxis
#19
https://www.readbyqxmd.com/read/28531888/right-trac%C3%A2-post-hospitalization-care-transitions-program-to-reduce-readmissions-for-hemodialysis-patients
#20
Rebecca L Wingard, Kathryn McDougall, Billie Axley, Andrew Howard, Cathleen O'Keefe, Nancy Armistead, Janet R Lynch, Sophia Rosen, Len Usvyat, Franklin W Maddux
BACKGROUND: Hemodialysis (HD) patients have high hospitalization rates. This nonrandomized trial tested the effect of a bundle of renal-specific "Right TraC™" strategies on 30-day all-cause readmission rates and, secondarily, 90-day readmissions and overall admissions among HD patients. METHODS: Twenty-six Fresenius clinics in West Virginia, Ohio, and Kentucky participated in the interventions. Eighteen matched clinics served as controls; intervention clinics also served as their own controls...
May 23, 2017: American Journal of Nephrology
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