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https://www.readbyqxmd.com/read/28100040/induced-pluripotent-stem-cell-research-in-the-era-of-precision-medicine
#1
Takashi Hamazaki, Nihal El Rouby, Natalie C Fredette, Katherine E Santostefano, Naohiro Terada
Recent advances in DNA sequencing technologies are revealing how human genetic variations associate with differential health risks, disease susceptibilities and drug responses. Such information is now expected to help evaluate individual health risks, design personalized health plans and treat patients with precision. It is still challenging, however, to understand how such genetic variations cause the phenotypic alterations in pathobiologies and treatment response. Human induced pluripotent stem cell (iPSC) technologies are emerging as a promising strategy to fill the knowledge gaps between genetic association studies and underlying molecular mechanisms...
January 18, 2017: Stem Cells
https://www.readbyqxmd.com/read/28095828/improved-genome-sequencing-using-an-engineered-transposase
#2
Amirali Kia, Christian Gloeckner, Trina Osothprarop, Niall Gormley, Erin Bomati, Michelle Stephenson, Igor Goryshin, Molly Min He
BACKGROUND: Next-generation sequencing (NGS) has transformed genomic research by reducing turnaround time and cost. However, no major breakthrough has been made in the upstream library preparation methods until the transposase-based Nextera method was invented. Nextera combines DNA fragmentation and barcoding in a single tube reaction and therefore enables a very fast workflow to sequencing-ready DNA libraries within a couple of hours. When compared to the traditional ligation-based methods, transposed-based Nextera has a slight insertion bias...
January 17, 2017: BMC Biotechnology
https://www.readbyqxmd.com/read/28088718/highly-efficient-inactivation-of-bacteria-found-in-drinking-water-using-chitosan-bentonite-composites-modelling-and-breakthrough-curve-analysis
#3
Sarah C Motshekga, Suprakas Sinha Ray
Disinfection of bacterially-contaminated drinking water requires a robust and effective technique and can be achieved by using an appropriate disinfectant material. The advanced use of nanomaterials is observed as an alternative and effective way for the disinfection process and water treatment as a whole. Hence, the inactivation of Escherichia coli (E. coli) using chitosan-Bentonite (Cts-Bent) composites was studied in a fixed bed column. Cts-Bent composites were synthesized using in situ cross-linking method using Bent-supported silver and zinc oxide nanoparticles...
January 3, 2017: Water Research
https://www.readbyqxmd.com/read/28088074/anti-angiogenic-treatment-in-breast-cancer-facts-successes-failures-and-future-perspectives
#4
REVIEW
Kim C Aalders, Konstantinos Tryfonidis, Elżbieta Senkus, Fatima Cardoso
Angiogenesis is one of the hallmarks of cancer and a crucial requisite in the development of tumors. Interrupting this process by blocking the vascular endothelial growth factor (VEGF) with the monoclonal antibody bevacizumab has been considered a possible breakthrough in the treatment of various types of cancer, especially for advanced disease. However in breast cancer, studies have shown ambivalent results causing debate about the value of this drug. In this article, we review the evidence for anti-angiogenic treatment options for breast cancer, as well as discuss the possible factors limiting the effectiveness of anti-angiogenic agents and offer a recommendation regarding the future research on these therapies for the treatment of breast cancer...
January 3, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28081594/management-of-direct-antiviral-agent-failures
#5
REVIEW
María Buti, Rafael Esteban
The current standard of care for patients with chronic hepatitis C virus (HCV) infection is a combination of direct-acting antiviral agents (DAAs). Most HCV patients treated with these drugs achieve viral elimination, but 1% to 15% fail to attain this objective. Treatment failures are usually related to relapse, and less often to on-treatment viral breakthrough. HCV drug resistant associated substitutions are detected in most patients who do not eliminate the virus. The risk of developing these variants depends on host- and virus-related factors, the properties of the drugs used, and the treatment strategies applied...
December 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28081116/the-sharing-experimental-animal-resources-coordinating-holdings-search-framework-encouraging-reduction-replacement-and-refinement-in-animal-research
#6
Bethny Morrissey, Karen Blyth, Phil Carter, Claude Chelala, Louise Jones, Ingunn Holen, Valerie Speirs
While significant medical breakthroughs have been achieved through using animal models, our experience shows that often there is surplus material remaining that is frequently never revisited but could be put to good use by other scientists. Recognising that most scientists are willing to share this material on a collaborative basis, it makes economic, ethical, and academic sense to explore the option to utilise this precious resource before generating new/additional animal models and associated samples. To bring together those requiring animal tissue and those holding this type of archival material, we have devised a framework called Sharing Experimental Animal Resources, Coordinating Holdings (SEARCH) with the aim of making remaining material derived from animal studies in biomedical research more visible and accessible to the scientific community...
January 2017: PLoS Biology
https://www.readbyqxmd.com/read/28076534/absorption-and-metabolization-of-sex-hormones-and-their-transformation-into-contraceptive-technologies-the-paths-taken-by-medical-thought-in-brazil
#7
Claudia Bonan, Luiz Antonio Teixeira, Andreza Rodrigues Nakano
The article analyses knowledge assimilation and the development of clinical and research practices relating to sex hormones among Brazilian gynaecologists. It discusses the paths taken by medical thought from the reception of the hormones to their transformation into contraceptives. Our objective is to comprehend styles of introducing and disseminating medical technologies in the area of reproductive health in Brazil. It uses methods of historical analysis and takes as its source the Anais Brasileiros de Ginecologia, a journal published between 1936 and 1970...
January 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28073246/a-new-era-of-genome-integration-simply-cut-and-paste
#8
Zihe Liu, Youyun Liang, Ee-Lui Ang, Huimin Zhao
Genome integration is a powerful tool in both basic and applied biological research. However, traditional genome integration, which is typically mediated by homologous recombination, has been constrained by low efficiencies and limited host range. In recent years, the emergence of homing endonucleases and programmable nucleases has greatly enhanced integration efficiencies and allowed alternative integration mechanisms such as non-homologous end joining and microhomology-mediated end joining, enabling integration in hosts deficient in homologous recombination...
January 10, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/28071590/fabrication-of-nanopore-and-nanoparticle-arrays-with-high-aspect-ratio-aao-masks
#9
Zeping Li, Zhimou Xu, Xiaopeng Qu, Shuangbao Wang, Jing Peng, Lihong Mei
How to use high aspect ratio anodic aluminum oxide (AAO) membranes as the etching and evaporation mask is one of the unsolved problems in the application of nanostructured arrays. Here we describe that the versatile utilizations of the highly ordered AAO membranes with high aspect ratio more than 20 as universal masks for formations of various nanostructure arrays on various substrates. The result shows that the fabricated nanopore and nanoparticle arrays of substrates inherit the regularity of the AAO membranes completely...
January 10, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28064490/evolution-and-prospects-of-the-asymmetric-hydrogenation-of-unfunctionalized-olefins
#10
Cristiana Margarita, Pher G Andersson
The catalytic enantioselective hydrogenation of prochiral olefins is a key reaction in asymmetric synthesis. Its relevance applies to both industry and academia as an inherently direct and sustainable strategy to induce chirality. Here we briefly recount the early breakthroughs concerning the asymmetric hydrogenation of largely unfunctionalized olefins, from the first reports to the advent of chiral Crabtree-like catalysts. The mechanism and its implications on the enantioselectivity are shortly discussed. The main focus of this Perspective lies on the more recent advances in the field, such as the latest developed classes of ligands and the opportunity to employ more Earth-abundant metals...
January 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28063210/the-progress-and-challenges-for-dermal-regeneration-in-tissue-engineering
#11
REVIEW
Hanlei Zhou, Chuangang You, Ronghua Jin, Pan Wu, Qiong Li, Chunmao Han
Wound healing is an inherent response resulting in the restoration of tissue integrity. It is a complex process involving cell migration, proliferation, differentiation, apoptosis, and the synthesis and remodeling of the extracellular matrix (ECM). The dermal tissue is an important component of skin that acts as a connecting link between the epidermis and hypodermis. The appearance of scars and contractures after autologous split-thickness skin transplantation or single epidermis diaphragm transplantation for full skin defects indicates that the dermal tissue plays an important role in skin regeneration...
January 7, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28063169/progress-in-the-study-of-bioluminescent-earthworms
#12
Natalja S Rodionova, Emilia Rota, Aleksandra S Tsarkova, Valentin N Petushkov
Even though bioluminescent oligochaetes rarely catch people's eyes due to their secretive lifestyle, glowing earthworms sighting reports have come from different areas on all continents except Antarctica. A major breakthrough in the research of earthworm bioluminescence occurred in the 1960s with the studies of the North American Diplocardia longa. Comparative studies conducted on 13 earthworm species belonging to six genera showed that N-isovaleryl-3-aminopropanal (Diplocardia luciferin) is the common substrate for bioluminescence in all examined species, while luciferases appeared to be responsible for the color of bioluminescence...
January 7, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28059698/uk-national-data-guardian-for-health-and-care-s-review-of-data-security-trust-better-security-and-opt-outs
#13
Tom Chan, Concetta Tania Di Iorio, Simon De Lusignan, Daniel Lo Russo, Craig Kuziemsky, Siaw-Teng Liaw
Sharing health and social care data is essential to the delivery of high quality health care as well as disease surveillance, public health, and for conducting research. However, these societal benefits may be constrained by privacy and data protection principles. Hence, societies are striving to find a balance between the two competing public interests. Whilst the spread of IT advancements in recent decades has increased the demand for an increased privacy and data protection in many ways health is a special case...
December 20, 2016: Journal of Innovation in Health Informatics
https://www.readbyqxmd.com/read/28056258/-advance-of-molecular-subtyping-and-precise-treatment-for-gliomas
#14
W Hua, Y Mao
With the advance of genomics research, there have been a new breakthrough in the molecular classification of gliomas. Glioblastoma (WHO grade Ⅳ) could be subtyped to proneural, neural, classical, and mesochymal according to the mRNA expression. Lower grade gliomas (WHO grade Ⅱ and Ⅲ) could be divided into 5 types using 1p/19q co-deletion, isocitrate dehydrogenase(IDH) mutation, and TERTp (promotor region) mutation. In 2016, a new classification of tumors of the central nervous system was proposed, and some new markers such as IDH1 mutation were introduced into the diagnosis of gliomas...
January 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28053160/the-24th-annual-nucleic-acids-research-database-issue-a-look-back-and-upcoming-changes
#15
Michael Y Galperin, Xosé M Fernández-Suárez, Daniel J Rigden
This year's Database Issue of Nucleic Acids Research contains 152 papers that include descriptions of 54 new databases and update papers on 98 databases, of which 16 have not been previously featured in NAR As always, these databases cover a broad range of molecular biology subjects, including genome structure, gene expression and its regulation, proteins, protein domains, and protein-protein interactions. Following the recent trend, an increasing number of new and established databases deal with the issues of human health, from cancer-causing mutations to drugs and drug targets...
January 4, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28050263/peculiarities-of-yeasts-and-human-telomerase-rnas-processing
#16
M P Rubtsova, D P Vasilkova, Yu V Naraykina, O A Dontsova
Telomerase is one of the major components of the telomeres -- linear eukaryotic chromosome ends - maintenance system. Linear chromosomes are shortened during each cell division due to the removal of the primer used for DNA replication. Special repeated telomere sequences at the very ends of linear chromosomes prevent the deletion of genome information caused by primer removal. Telomeres are shortened at each replication round until it becomes critically short and is no longer able to protect the chromosome in somatic cells...
October 2016: Acta Naturae
https://www.readbyqxmd.com/read/28050262/gmos-in-russia-research-society-and-legislation
#17
I V Korobko, P G Georgiev, K G Skryabin, M P Kirpichnikov
Russian legislation lags behind the rapid developments witnessed in genetic engineering. Only a scientifically based and well-substantiated policy on the place of organisms that are created with the use of genetic engineering technologies and an assessment of the risks associated with them could guarantee that the breakthroughs achieved in modern genetic engineering technologies are effectively put to use in the real economy. A lack of demand for such breakthroughs in the practical field will lead to stagnation in scientific research and to a loss of expertise...
October 2016: Acta Naturae
https://www.readbyqxmd.com/read/28044203/advances-with-neonatal-aerodigestive-science-in-the-pursuit-of-safe-swallowing-in-infants-invited-review
#18
Sudarshan R Jadcherla
Feeding, swallowing, and airway protection are three distinct entities. Feeding involves a process of sequential, neurosensory, and neuromotor interactions of reflexes and behaviors facilitating ingestion. Swallowing involves anterograde bolus movement during oral-, pharyngeal-, and esophageal phases of peristalsis into stomach. During these events, coordination with airway protection is vital for homeostasis in clearing any material away from airway vicinity. Neurological-airway-digestive inter-relationships are critical to the continuum of successful feeding patterns during infancy, either in health or disease...
January 2, 2017: Dysphagia
https://www.readbyqxmd.com/read/28042619/beating-the-odds-successful-establishment-of-a-phase-ii-iii-clinical-research-trial-in-resource-poor-liberia-during-the-largest-ever-ebola-outbreak
#19
J Doe-Anderson, B Baseler, P Driscoll, M Johnson, J Lysander, L McNay, W S Njoh, M Smolskis, L Wehrlen, J Zuckerman
It has been argued that a country such as Liberia, not fully recovered from the devastation of decades of civil unrest, lacked the appropriate ethical and regulatory framework, basic human and health care services, and infrastructure to carry out clinical trials according to international standards of quality during a public health emergency. However, as Liberia, Sierra Leone, and Guinea were being ravaged by the largest and most devastating Ebola Virus Disease (EVD) outbreak ever recorded, the topic of conducting clinical trials of experimental vaccine and treatment candidates in these resource-poor countries generated the keen interest and concern of scientists, researchers, physicians, bioethicists, philanthropists, and even politicians...
December 15, 2016: Contemporary Clinical Trials Communications
https://www.readbyqxmd.com/read/28042521/cftr-modulator-therapies-in-pediatric-cystic-fibrosis-focus-on-ivacaftor
#20
Elizabeth L Kramer, John P Clancy
INTRODUCTION: Mutations in the cystic fibrosis transmembrane conductance regulator protein (CFTR) cause cystic fibrosis (CF), a disease with life threatening pulmonary and gastrointestinal manifestations. Recent breakthrough therapies restore function to select disease-causing CFTR mutations. Ivacaftor is a small molecule that increases the open channel probability of certain CFTR mutations, producing clear evidence of bioactivity and efficacy in pediatric CF patients. CFTR modulators represent a significant advancement in CF treatment...
October 2016: Expert Opinion on Orphan Drugs
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