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https://www.readbyqxmd.com/read/29457376/delivery-of-allogeneic-adipose-stem-cells-in-polyethylene-glycol-fibrin-hydrogels-as-an-adjunct-to-meshed-autografts-after-sharp-debridement-of-deep-partial-thickness-burns
#1
David M Burmeister, Randolph Stone, Nicole Wrice, Alfred Laborde, Sandra C Becerra, Shanmugasundaram Natesan, Robert J Christy
Harvesting of autografts results in donor site morbidities and is limited in scenarios such as large total body surface area burns. In these instances, coverage is increased by meshing grafts at the expense of delayed biologic closure. Moreover, graft meshing increases the likelihood of contraction and hypertrophic scarring, limits range of motion, and worsens cosmesis. Many tissue engineering technologies have touted the promise of adipose-derived stem cells (ASCs) for burn wounds. The primary objective of the current study was to determine feasibility and efficacy of in situ ASC delivery via PEGylated fibrin (FPEG) hydrogels as adjuncts to meshed split thickness skin grafts in a porcine model...
February 18, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29457234/community-engagement-and-field-trials-of-genetically-modified-insects-and-animals
#2
Carolyn P Neuhaus
New techniques for the genetic modification of organisms are creating new strategies for addressing persistent public health challenges. For example, the company Oxitec has conducted field trials internationally-and has attempted to conduct field trials in the United States-of a genetically modified mosquito that can be used to control dengue, Zika, and some other mosquito-borne diseases. In 2016, a report commissioned by the National Academies of Sciences, Engineering, and Medicine discussed the potential benefits and risks of another strategy, using gene drives...
January 2018: Hastings Center Report
https://www.readbyqxmd.com/read/29456510/sodium-tanshinone-ii-a-sulfonate-ds-201-induces-vasorelaxation-of-rat-mesenteric-arteries-via-inhibition-of-l-type-ca-2-channel
#3
Xiao-Dong Zhang, Chun-Xia He, Jun Cheng, Jing Wen, Peng-Yun Li, Na Wang, Guang Li, Xiao-Rong Zeng, Ji-Min Cao, Yan Yang
Background: We previously have proved that sodium tanshinone II-A sulfonate (DS-201), a derivative of traditional Chinese medicinal herb Danshen (Salvia miltiorrhiza), is an opener and vasodilator of BKCa channel in the vascular smooth muscle cells (VSMCs). Vascular tension is closely associated with Ca2+ dynamics and activation of BKCa channel may not be the sole mechanism for the relaxation of the vascular tension by DS-201. Therefore, we hypothesized that the vasorelaxing effect of DS-20 may be also related to Ca2+ channel and cytoplasmic Ca2+ level in the VSMCs...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29456356/the-current-state-of-rural-neurosurgical-practice-an-international-perspective
#4
REVIEW
Pavan S Upadhyayula, John K Yue, Jason Yang, Harjus S Birk, Joseph D Ciacci
Introduction: Rural and low-resource areas have diminished capacity to care for neurosurgical patients due to lack of infrastructure, healthcare investment, and training programs. This review summarizes the range of rural neurosurgical procedures, novel mechanisms for delivering care, rapid training programs, and outcome differences across international rural neurosurgical practice. Methods: A comprehensive literature search was performed for English language manuscripts with keywords "rural" and "neurosurgery" using the National Library of Medicine PubMed database (01/1971-06/2017)...
January 2018: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29454028/fabricating-3d-printed-orally-disintegrating-printlets-using-selective-laser-sintering
#5
Fabrizio Fina, Christine M Madla, Alvaro Goyanes, Jiaxin Zhang, Simon Gaisford, Abdul W Basit
Selective laser sintering (SLS) is a three-dimensional printing (3DP) technology employed to manufacture plastic, metallic or ceramic objects. The aim of this study was to demonstrate the feasibility of SLS to fabricating novel solid dosage forms with accelerated drug release properties, and with a view to create orally disintegrating formulations. Two polymers (hydroxypropyl methylcellulose (HPMC E5) and vinylpyrrolidone-vinyl acetate copolymer (Kollidon ® VA 64)) were separately mixed with 5% paracetamol (used as a model drug) and 3% Candurin ® gold sheen colorant; the powder mixes were subjected to SLS printing resulting in the manufacture of printlets (3DP tablets)...
February 14, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29453861/virus-like-particle-engineering-from-rational-design-to-versatile-applications
#6
REVIEW
Xuanwei Ding, Dong Liu, George Booth, Wei Gao, Yuan Lu
As mimicking natural virus structures, virus-like particles (VLPs) have evolved to become a widely accepted technology used for humans which are safe, highly efficacious and profitable. Several remarkable advantages have been achieved to revolutionize the molecule delivery for diverse applications in nanotechnology, biotechnology, and medicine. Here, we review the rational structure design, manufacturing process, functionalization strategy, and emerging applications of VLPs. The situation and challenges in the VLP engineering, the key development orientation, and future applications have been discussed...
February 17, 2018: Biotechnology Journal
https://www.readbyqxmd.com/read/29453531/transmucosal-nanoparticles-toxicological-overview
#7
Swapnil Talkar, Sagar Dhoble, Anuradha Majumdar, Vandana Patravale
Nanoparticles have specific physicochemical properties different to bulk materials of the same composition and such properties make them very attractive for commercial and medical applications. Mucoadhesive nanoparticulate dosage forms are designed to enable prolonged retention of these nanoparticles at the site of application, providing a controlled drug release for improved therapeutic outcome. Moreover, drug delivery across the mucosa bypasses the first-pass hepatic metabolism and avoids the degradation by gastrointestinal enzymes...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29453042/evaluation-of-the-anti-hypertensive-effect-of-tengfu-jiangya-tablet-by-combination-of-uplc-q-exactive-ms-based-metabolomics-and-itraq-based-proteomics-technology
#8
Yanpeng Tian, Feng Jiang, Yunlun Li, Haiqiang Jiang, Yanjun Chu, Lijuan Zhu, Weixing Guo
OBJECTIVE: Tengfu Jiangya tablet (TJT) is a traditional Chinese medicine formulation composed of Uncaria rhynchophylla and Semen raphani. It is a hospital preparation that is widely used in clinics for treating hypertension. A previous metabolomics study reported that TJT exerted a protective effect on hypertension by restoring impaired NO production, ameliorating the inflammatory state, and vascular remodeling. A clinical proteomics study also revealed five key target proteins during TJT intervention...
February 13, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29452273/3d-bioprinted-functional-and-contractile-cardiac-tissue-constructs
#9
Zhan Wang, Sang Jin Lee, Heng-Jie Cheng, James J Yoo, Anthony Atala
Bioengineering of a functional cardiac tissue composed of primary cardiomyocytes has great potential for myocardial regeneration and in vitro tissue modeling. However, its applications remain limited because the cardiac tissue is a highly organized structure with unique physiologic, biomechanical, and electrical properties. In this study, we undertook a proof-of-concept study to develop a contractile cardiac tissue with cellular organization, uniformity, and scalability by using three-dimensional (3D) bioprinting strategy...
February 13, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29451882/de-novo-transcriptomic-analysis-of-leaf-and-fruit-tissue-of-cornus-officinalis-using-illumina-platform
#10
Dian-Yun Hou, Lin-Chun Shi, Meng-Meng Yang, Jiong Li, Shuang Zhou, Hong-Xiao Zhang, Hua-Wei Xu
Cornus officinalis is one of the most widely used medicinal plants in China and other East Asian countries to cure diseases such as liver, kidney, cardiovascular diseases and frequent urination for thousands of years. It is a Level 3 protected species, and is one of the 42 national key protected wild species of animals and plants in China. However, the genetics and molecular biology of C. officinalis are poorly understood, which has hindered research on the molecular mechanism of its metabolism and utilization...
2018: PloS One
https://www.readbyqxmd.com/read/29451603/from-medicinal-chemistry-to-human-health-current-approaches-to-drug-discovery-for-cancer-and-neglected-tropical-diseases
#11
Leonardo G Ferreira, Glaucius Oliva, Adriano D Andricopulo
Scientific and technological breakthroughs have compelled the current players in drug discovery to increasingly incorporate knowledge-based approaches. This evolving paradigm, which has its roots attached to the recent advances in medicinal chemistry, molecular and structural biology, has unprecedentedly demanded the development of up-to-date computational approaches, such as bio- and chemo-informatics. These tools have been pivotal to catalyzing the ever-increasing amount of data generated by the molecular sciences, and to converting the data into insightful guidelines for use in the research pipeline...
February 15, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29451516/-evidence-based-medicine-vs-personalized-medicine
#12
Lucio Capurso
Evidence-based medicine (EBM) and personalized medicine (PM) are driven by two diverse modes of reasoning about «evidence making». EBM has been criticized since his quality mark has been misappropriated by vested interests, the benefits statistically significant may be marginal in clinical practice, rigid rules and technology may produce care that is management driven rather than patient centered. On the contrary PM (or "precision medicine") refers to the tailoring of medical treatment to the specific characteristics of each patient involving the ability to classify individuals into subpopulations that are uniquely susceptible to a specific treatment, sparing expense and side effects and is derived from doubts on the results of subgroup analyses and on non responders in clinical trials typical of EBM...
January 2018: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/29451205/optical-read-out-and-modulation-of-peripheral-nerve-activity
#13
REVIEW
Arjun K Fontaine, Hans E Anderson, John H Caldwell, Richard F Weir
Numerous clinical and research applications necessitate the ability to interface with peripheral nerve fibers to read and control relevant neural pathways. Visceral organ modulation and rehabilitative prosthesis are two areas which could benefit greatly from improved neural interfacing approaches. Therapeutic neural interfacing, or 'bioelectronic medicine', has potential to affect a broad range of disorders given that all the major organs of the viscera are neurally innervated. However, a better understanding of the neural pathways that underlie function and a means to precisely interface with these fibers are required...
January 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29449955/prospects-for-precision-medicine-in-glomerulonephritis-treatment
#14
REVIEW
Yulu Cherry Liu, Justin Chun
Background: Glomerulonephritis (GN) consists of a group of kidney diseases that are categorized based on shared histopathological features. The current classifications for GN make it difficult to distinguish the individual variability in presentation, disease progression, and response to treatment. GN is a significant cause of end-stage renal disease (ESRD), and improved therapies are desperately needed because current immunosuppressive therapies sometimes lack efficacy and can lead to significant toxicities...
2018: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/29449411/molecular-imaging-in-drug-discovery-and-development
#15
Jonathan R Lindner, Jeanne Link
Noninvasive imaging has played an increasing role in the process of cardiovascular drug development. This review focuses specifically on the use of molecular imaging, which has been increasingly applied to improve and accelerate certain preclinical steps in drug development, including the identification of appropriate therapeutic targets, evaluation of on-target and off-target effects of candidate therapies, assessment of dose response, and the evaluation of drug or biological biodistribution and pharmacodynamics...
February 2018: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29448963/academic-medical-centers-as-innovation-ecosystems-to-address-population-omics-challenges-in-precision-medicine
#16
REVIEW
Patrick J Silva, Valerie M Schaibley, Kenneth S Ramos
While the promise of the Human Genome Project provided significant insights into the structure of the human genome, the complexities of disease at the individual level have made it difficult to utilize -omic information in clinical decision making. Some of the existing constraints have been minimized by technological advancements that have reduced the cost of sequencing to a rate far in excess of Moore's Law (a halving in cost per unit output every 18 months). The reduction in sequencing costs has made it economically feasible to create large data commons capturing the diversity of disease across populations...
February 15, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29448764/frontiers-in-crispr
#17
Alyson G Weidmann
CRISPR-based approaches to genetic engineering are progressing at a rapid pace and present exciting new avenues for science, medicine, and technology. Many of the most cutting-edge advances in genome engineering are encompassed in the Research Articles, Reviews, and Perspectives in this special issue, often with an eye toward future directions for the field. Yet, many questions remain at this new frontier. We asked over 100 CRISPR researchers, including our contributing authors, for their perspectives on some of the most pressing questions surrounding the future of genome engineering and the CRISPR-Cas platform, the challenges that lie ahead, and opportunities for chemists and chemical biologists to drive creative molecular solutions...
February 16, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29448760/identification-of-new-compounds-from-sage-flowers-salvia-officinalis-l-as-markers-for-quality-control-and-the-influence-of-the-manufacturing-technology-on-the-chemical-composition-and-antibacterial-activity-of-sage-flower-extracts
#18
Sebastian Gericke, Tilo Lübken, Diana Wolf, Martin Kaiser, Christian Hannig, Karl Speer
Parts of Salvia species such as its flowers and leaves are currently used as a culinary herb and for some medicinal applications. To distinguish the different sage extracts it is necessary to analyze their individual chemical compositions. Their characteristic compounds might be established as markers to differentiate between sage flowers and leaf extracts or to determine the manufacturing technology and storage conditions. Tri-p-coumaroylspermidine can be detected only in flowers and has been described here for Salvia and Lavandula species for the first time...
February 16, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29447720/no-257-ultrasonographic-cervical-length-assessment-in-predicting-preterm-birth-in-singleton-pregnancies
#19
Kenneth Lim, Kimberly Butt, Joan M Crane
OBJECTIVES: To review (1) the use of ultrasonographic-derived cervical length measurement in predicting preterm birth and (2) interventions associated with a short cervical length. OUTCOMES: Reduction in rates of prematurity and/or better identification of those at risk, as well as possible prevention of unnecessary interventions. EVIDENCE: Published literature was retrieved through searches of PubMed and The Cochrane Library up to December 2009, using appropriate controlled vocabulary and key words (preterm labour, ultrasound, cervix, incompetent cervix, transvaginal, transperineal, cervical length, fibronectin)...
February 2018: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/29447055/advanced-microengineered-lung-models-for-translational-drug-discovery
#20
Brian F Niemeyer, Peng Zhao, Rubin M Tuder, Kambez H Benam
Lung diseases impose a significant socioeconomic burden and are a leading cause of morbidity and mortality worldwide. Moreover, respiratory medicine, unlike several other therapeutic areas, faces a disappointingly low number of new approved therapies. This is partly due to lack of reliable in vitro or in vivo models that can reproduce organ-level complexity and pathophysiological responses of human lung. Here, we examine new opportunities in application of recently emerged organ-on-chip technology to model human lung alveolus and small airway in preclinical drug development and biomarker discovery...
February 1, 2018: SLAS Discovery
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