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https://www.readbyqxmd.com/read/28092807/application-of-the-dreadd-technique-in-biomedical-brain-research
#1
REVIEW
Grzegorz Dobrzanski, Małgorzata Kossut
The DREADD (Designer Receptors Exclusively Activated by Designer Drugs) technique is a new chemogenetic approach allowing for selective and remote control of neural activity with a high degree of spatial resolution. Since its discovery in 2007 the DREADD technique was successfully employed into basic research, and together with the optogenetic method provided so far the best tool to influence the activity of the brain circuits and cell populations. The first aim of this review was to concisely describe the technique with regard to such issues like the history of its development, biochemistry as well as modes of the designer receptors delivery and expression...
October 29, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28092680/utilizing-somatic-mutation-data-from-numerous-studies-for-cancer-research-proof-of-concept-and-applications
#2
D Amar, S Izraeli, R Shamir
Large cancer projects measure somatic mutations in thousands of samples, gradually assembling a catalog of recurring mutations in cancer. Many methods analyze these data jointly with auxiliary information with the aim of identifying subtype-specific results. Here, we show that somatic gene mutations alone can reliably and specifically predict cancer subtypes. Interpretation of the classifiers provides useful insights for several biomedical applications. We analyze the COSMIC database, which collects somatic mutations from The Cancer Genome Atlas (TCGA) as well as from many smaller scale studies...
January 16, 2017: Oncogene
https://www.readbyqxmd.com/read/28092430/optimal-reactivity-and-improved-self-healing-capability-of-structurally-dynamic-polymers-grafted-on-janus-nanoparticles-governed-by-chain-stiffness-and-spatial-organization
#3
Guoxi Xu, Zihan Huang, Pengyu Chen, Tianqi Cui, Xinghua Zhang, Bing Miao, Li-Tang Yan
Structurally dynamic polymers are recognized as a key potential to revolutionize technologies ranging from design of self-healing materials to numerous biomedical applications. Despite intense research in this area, optimizing reactivity and thereby improving self-healing ability at the most fundamental level pose urgent issue for wider applications of such emerging materials. Here, the authors report the first mechanistic investigation of the fundamental principle for the dependence of reactivity and self-healing capabilities on the properties inherent to dynamic polymers by combining large-scale computer simulation, theoretical analysis, and experimental discussion...
January 16, 2017: Small
https://www.readbyqxmd.com/read/28092391/correlation-of-focal-adhesion-assembly-and-disassembly-with-cell-migration-on-nanotopography
#4
Elena I Liang, Emma J Mah, Albert F Yee, Michelle A Digman
Selective cell adhesion is desirable to control cell growth and migration on biomedical implants. Mesenchymal cell migration is regulated through focal adhesions (FAs) and can be modulated by their microenvironment, including changes in surface topography. We use the Number and Molecular Brightness (N&B) imaging analysis to provide a unique perspective on FA assembly and disassembly. This imaging analysis generates a map of real-time fluctuations of protein monomers, dimers, and higher order aggregates of FA proteins, such as paxillin during assembly and disassembly...
January 16, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/28091566/efficient-generation-of-hpsc-derived-midbrain-dopaminergic-neurons-in-a-fully-defined-scalable-3d-biomaterial-platform
#5
Maroof M Adil, Gonçalo M C Rodrigues, Rishikesh U Kulkarni, Antara T Rao, Nicole E Chernavsky, Evan W Miller, David V Schaffer
Pluripotent stem cells (PSCs) have major potential as an unlimited source of functional cells for many biomedical applications; however, the development of cell manufacturing systems to enable this promise faces many challenges. For example, there have been major recent advances in the generation of midbrain dopaminergic (mDA) neurons from stem cells for Parkinson's Disease (PD) therapy; however, production of these cells typically involves undefined components and difficult to scale 2D culture formats. Here, we used a fully defined, 3D, thermoresponsive biomaterial platform to rapidly generate large numbers of action-potential firing mDA neurons after 25 days of differentiation (~40% tyrosine hydroxylase (TH) positive, maturing into 25% cells exhibiting mDA neuron-like spiking behavior)...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28091413/expert-consensus-on-wenxin-granule-for-treatment-of-cardiac-arrhythmias
#6
(no author information available yet)
No abstract text is available yet for this article.
2017: Chinese Medical Journal
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/28090730/opinions-and-potential-solutions-regarding-dissemination-bias-from-funding-agencies-of-biomedical-research-in-europe
#8
Hector Pardo-Hernandez, Gerard Urrútia, Joerg J Meerpohl, Ana Marušić, Elizabeth Wager, Xavier Bonfill
RATIONALE, AIMS, AND OBJECTIVES: Several studies have found that about half of research results from clinical trials are never published. Until now, there has been little information on the views that funding agencies of biomedical research in Europe have regarding this issue and its possible solutions. METHODS: An electronic survey was conducted among funding agencies from 34 European countries. Participants were asked about their opinions, policies, and potential solutions regarding dissemination bias...
January 16, 2017: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/28090431/a-role-for-3d-printing-in-kidney-on-a-chip-platforms
#9
Ryan D Sochol, Navin R Gupta, Joseph V Bonventre
The advancement of "kidney-on-a-chip" platforms - submillimeter-scale fluidic systems designed to recapitulate renal functions in vitro - directly impacts a wide range of biomedical fields, including drug screening, cell and tissue engineering, toxicity testing, and disease modelling. To fabricate kidney-on-a-chip technologies, researchers have primarily adapted traditional micromachining techniques that are rooted in the integrated circuit industry; hence the term, "chip." A significant challenge, however, is that such methods are inherently monolithic, which limits one's ability to accurately recreate the geometric and architectural complexity of the kidney in vivo...
March 2016: Current Transplantation Reports
https://www.readbyqxmd.com/read/28090101/a-novel-mathematical-model-for-determining-faculty-workload
#10
Leo R Fitzpatrick, Carol Millette-Snodgrass, Eman Atef
Objective. To develop a mathematical model for determining faculty workload at a college of pharmacy with a team-based learning curriculum. Methods. Using faculty provided data, our model calculated activity and weighted means in teaching, scholarship and service. Subsequently, these data were used to develop departmental and institutional workload models. Results. For the pharmaceutical and biomedical sciences department, percent faculty activity mean values were greatest for service followed by teaching and scholarship...
November 25, 2016: American Journal of Pharmaceutical Education
https://www.readbyqxmd.com/read/28088983/the-epigenetic-basis-of-hematopoietic-stem-cell-aging
#11
REVIEW
Ashley Kramer, Grant A Challen
Highly proliferative tissues such as the gut, skin, and bone marrow lose millions of cells each day to normal attrition and challenge from different biological adversities. To achieve a lifespan beyond the longevity of individual cell types, tissue-specific stem cells sustain these tissues throughout the life of a human. For example, the lifespan of erythrocytes is about 100 days and adults make about two million new erythrocytes every second. A small pool of hematopoietic stem cells (HSCs) in the bone marrow is responsible for the lifetime maintenance of these populations...
January 2017: Seminars in Hematology
https://www.readbyqxmd.com/read/28088943/percutaneous-poking-reduction-and-fixation-versus-open-reduction-and-fixation-in-the-treatment-of-displaced-calcaneal-fractures-for-chinese-patients-a-systematic-review-and-meta-analysis
#12
Xiao-Jian Wang, Yun-Xing Su, Lu Li, Zhi-Hua Zhang, Xiao-Chun Wei, Lei Wei
PURPOSE: To compare the efficacy of percutaneous poking reduction and fixationwith open reduction and fixation in the treatment of displaced calcaneal fractures. METHODS: Reports of studies using case-controlled trials (CCT) to compare the percutaneous poking reduction and fixation with the open reduction and fixation in the management of calcaneal fractures were retrieved from the Cochrane Library, PubMed Database, CNKI, Chinese Biomedical Database, Wanfang Data (from January of 2005 to August of 2015)...
December 1, 2016: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28088847/vapor-and-gas-bubble-growth-dynamics-around-laser-irradiated-water-immersed-plasmonic-nanoparticles
#13
Yuliang Wang, Mikhail E Zaytsev, Hai Le The, Jan Cornelis Titus Eijkel, Harold J W Zandvliet, Xuehua Zhang, Detlef Lohse
Microbubbles produced by exposing water-immersed metallic nanoparticles to resonant light play an important role in novel and efficient plasmonic-enhanced processes for catalytic conversion, solar energy harvesting, biomedical imaging technique or cancer therapy. How do these bubbles form and what is their gas composition? In this article, the growth dynamics of nucleating bubbles around laser irradiated water-immersed Au plasmonic nanoparticles are studied to determine the exact origin of the occurrence and growth of these bubbles...
January 16, 2017: ACS Nano
https://www.readbyqxmd.com/read/28088691/stability-effect-of-cholesterol-poly-acrylic-acid-in-a-stimuli-responsive-polymer-liposome-complex-obtained-from-soybean-lecithin-for-controlled-drug-delivery
#14
M G Simões, P Alves, Manuela Carvalheiro, P N Simões
The development of polymer-liposome complexes (PLCs), in particular for biomedical applications, has grown significantly in the last decades. The importance of these studies comes from the emerging need in finding intelligent controlled release systems, more predictable, effective and selective, for applications in several areas, such as treatment and/or diagnosis of cancer, neurological, dermatological, ophthalmic and orthopedic diseases, gene therapy, cosmetic treatments, and food engineering. This work reports the development and characterization of a pH sensitive system for controlled release based on PLCs...
January 4, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28088616/patient-agency-and-contested-notions-of-disability-in-social-assistance-applications-in-south-africa
#15
Gabrielle Kelly
Problems in fairly allocating welfare and health resources are very often located in the spaces where citizens interact directly with state workers. This study draws on observations of doctor-patient encounters in disability assessments for the South African disability grant (DG) to examine how doctor-patient interactions and patient agency shape social welfare allocation in a context of high poverty and inequality. Data were gathered via interviews with healthcare workers and observations of doctor-patient interactions in twelve clinics and three hospitals in the Western Cape province between October 2013 and August 2014...
January 9, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28088500/voice-emotion-perception-and-production-in-cochlear-implant-users
#16
REVIEW
N T Jiam, M Caldwell, M L Deroche, M Chatterjee, C J Limb
Voice emotion is a fundamental component of human social interaction and social development. Unfortunately, cochlear implant users are often forced to interface with highly degraded prosodic cues as a result of device constraints in extraction, processing, and transmission. As such, individuals with cochlear implants frequently demonstrate significant difficulty in recognizing voice emotions in comparison to their normal hearing counterparts. Cochlear implant-mediated perception and production of voice emotion is an important but relatively understudied area of research...
January 11, 2017: Hearing Research
https://www.readbyqxmd.com/read/28087485/stepwise-targeted-drug-delivery-to-liver-cancer-cells-for-enhanced-therapeutic-efficacy-by-galactose-grafted-ultra-ph-sensitive-micelles
#17
Guoqing Yan, Jun Wang, Liefeng Hu, Xin Wang, Guanqing Yang, Shengxiang Fu, Xu Cheng, Panpan Zhang, Rupei Tang
: To promote drug accumulation and cell-killing ability at tumor tissue, we have prepared a stepwise targeted drug delivery system that can remain stealthy and long-circulating in the blood vessels, improve drug retention at extracellular stimuli, enhance cellular uptake through special targeting ligands, and then achieve rapid drug release to improve toxicity to tumor cells at intracellular stimuli. Herein, galactose-grafted, ultra-pH-sensitive drug carriers (POEAd-g-LA-DOX micelles), which could respond to both extracellular and intracellular pH, and combine with galactose-receptors in cell membrane, were constructed by a facile method, therefore achieving: (i) remaining stable at pH 7...
January 10, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28087451/in-depth-comparative-analysis-of-the-chicken-eggshell-membrane-proteome
#18
Tamer A E Ahmed, Henri-Pierre Suso, Maxwell T Hincke
: The avian eggshell membrane (ESM) is stabilized by extensive cross-linkages, making the identification of its protein constituents technically challenging. Herein, we applied various extraction/solubilization conditions followed by proteomic analysis to characterize the protein constituents of ESM derived from the unfertilized chicken eggs. The egg white and eggshell proteomes (including previous published work) were determined and compared to ESM to identify proteins that are relatively or highly specific to ESM...
January 10, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28087376/ir780-loaded-tpgs-tos-micelles-for-breast-cancer-photodynamic-therapy
#19
Cleide Pais-Silva, Duarte de Melo-Diogo, Ilídio J Correia
IR780 iodide is a near-infrared (NIR) dye with a huge potential for cancer imaging and phototherapy. However, its biomedical application is strongly impaired by its lipophilic character. Herein, amphiphilic micelles based on d-α-tocopheryl polyethylene glycol succinate (TPGS) and d-α-tocopheryl succinate (TOS), two vitamin E derivatives with intrinsic anticancer activity, are explored to load IR780. IR780-loaded micelles with suitable sizes are obtained by using specific TPGS and TOS weight feed ratios during micelles formulation and these are able to encapsulate IR780 with high efficiency...
January 11, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28086924/treating-infants-with-frigg-linking-disease-aetiologies-medicinal-plant-use-and-care-seeking-behaviour-in-southern-morocco
#20
Irene Teixidor-Toneu, Gary J Martin, Rajindra K Puri, Ahmed Ouhammou, Julie A Hawkins
BACKGROUND: Although most Moroccans rely to some extent on traditional medicine, the practice of frigg to treat paediatric ailments by elderly women traditional healers known as ferraggat, has not yet been documented. We describe the role of these specialist healers, document the medicinal plants they use, and evaluate how and why their practice is changing. METHODS: Ethnomedicinal and ethnobotanical data were collected using semi-structured interviews and observations of medical encounters...
January 13, 2017: Journal of Ethnobiology and Ethnomedicine
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