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https://www.readbyqxmd.com/read/27900684/dna-rna-and-protein-based-stable-isotope-probing-for-high-throughput-biomarker-analysis-of-active-microorganisms
#1
Eleanor Jameson, Martin Taubert, Sara Coyotzi, Yin Chen, Özge Eyice, Hendrik Schäfer, J Colin Murrell, Josh D Neufeld, Marc G Dumont
Stable-isotope probing (SIP) enables researchers to target active populations within complex microbial communities, which is achieved by providing growth substrates enriched in heavy isotopes, usually in the form of (13)C, (18)O, or (15)N. After growth on the substrate and subsequent extraction of microbial biomarkers, typically nucleic acids or proteins, the SIP technique is used for the recovery and analysis of isotope-labeled biomarkers from active microbial populations. In the years following the initial development of DNA- and RNA-based SIP, it was common practice to characterize labeled populations by targeted gene analysis...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27900341/subventricular-zone-associated-glioblastoma-a-call-for-translational-research-to-guide-clinical-decision-making
#2
Andrew W Smith, Bhupesh Parashar, A Gabriella Wernicke
Glioblastoma (GBM) is both the most common and the most devastating primary cancer of the central nervous system, with an expected overall survival in most patients of about 14 months. Despite extensive research, outcomes for GBM have been largely unchanged since the introduction of temozolomide in 2005. We believe that in order to achieve a breakthrough in therapeutic management, we must begin to identify subtypes of GBM, and tailor treatment to best target a particular tumor's vulnerabilities. Our group has recently produced an examination of the clinical outcomes of radiation therapy directed at tumors that contact the subventricular zone (SVZ), the 3-5 mm lateral border of the lateral ventricles that contains the largest collection of neural stem cells in the adult brain...
2016: Neurogenesis (Austin, Tex.)
https://www.readbyqxmd.com/read/27898010/applications-of-alginate-based-bioinks-in-3d-bioprinting
#3
REVIEW
Eneko Axpe, Michelle L Oyen
Three-dimensional (3D) bioprinting is on the cusp of permitting the direct fabrication of artificial living tissue. Multicellular building blocks (bioinks) are dispensed layer by layer and scaled for the target construct. However, only a few materials are able to fulfill the considerable requirements for suitable bioink formulation, a critical component of efficient 3D bioprinting. Alginate, a naturally occurring polysaccharide, is clearly the most commonly employed material in current bioinks. Here, we discuss the benefits and disadvantages of the use of alginate in 3D bioprinting by summarizing the most recent studies that used alginate for printing vascular tissue, bone and cartilage...
November 25, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27894413/targeting-of-bcr-abl-lessons-learned-from-bcr-abl-inhibition
#4
X Lin, M Z Qureshi, R Attar, S Khalid, F Tahir, A Yaqub, A Aslam, I Yaylim, L K De Carlos Back, A A Farooqi, M Ismail
In 1960 researchers reported that balanced translocation between chromosomes 22 and 9 resulted in the generation of Philadelphia chromosome. This breakthrough revolutionized our knowledge related to leukemia biology and contemporary studies revealed that chromosomal translocation resulted in the fusion between the 5' segment of BCR gene and 3' segment of the ABL gene to form BCR/ABL fusion gene. Research over the years has progressively and systematically improved our understanding of the genetic and proteomic basis of Leukemia...
October 31, 2016: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/27892723/optimization-and-stratification-of-multiple-sclerosis-treatment-in-fast-developing-economic-countries-a-perspective-from-qatar
#5
Dirk Deleu, Boulenouar Mesraoua, Hisham El Khider, Beatriz Canibano, Gayane Melikyan, Hassan Al Hail, Noha Mhjob, Anjushri Bhagat, Faiza Ibrahim, Yolande Hanssens
OBJECTIVE: The introduction of disease-modifying therapies (DMTs) - with varying degrees of efficacy for reducing annual relapse rate and disability progression - has considerably transformed the therapeutic landscape of relapsing-remitting multiple sclerosis (RRMS). We aim to develop rational evidence-based treatment recommendations and algorithms for the management of clinically isolated syndrome (CIS) and RRMS conform to the healthcare system in a fast-developing economic country such as Qatar...
November 28, 2016: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/27891195/reflections-on-a-giant-of-brain-science-how-lucky-we-are-having-walter-j-freeman-as-our-beacon-in-cognitive-neurodynamics-research
#6
REVIEW
Robert Kozma
Walter J. Freeman was a giant of the field of neuroscience whose visionary work contributed various experimental and theoretical breakthroughs to brain research in the past 60 years. He has pioneered a number of Electroencephalogram and Electrocorticogram tools and approaches that shaped the field, while "Freeman Neurodynamics" is a theoretical concept that is widely known, used, and respected among neuroscientists all over the world. His recent death is a profound loss to neuroscience and biomedical engineering...
December 2016: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/27888525/breaking-sad-unleashing-the-breakthrough-potential-of-ketamine-s-rapid-antidepressant-effects
#7
David Feifel
Preclinical Research The surprising results of a small clinical trial on the effects of low dose ketamine, a 65-year old anesthetic drug that is also used off-label for chronic pain and recreationally as a club drug, in eight depressed subjects unleashed the most significant advance in antidepressant drug development in decades. That study and subsequent ones have demonstrated that low dose, infused ketamine is able to induce a remission of depression in patients who have failed conventional medications, within 24 h...
November 26, 2016: Drug Development Research
https://www.readbyqxmd.com/read/27883133/na2-32co1-84-so4-3-as-a-new-member-of-the-alluaudite-family-of-high-voltage-sodium-battery-cathodes
#8
Debasmita Dwibedi, Ritambhara Gond, Allumolu Dayamani, Rafael B Araujo, Sudip Chakraborty, Rajeev Ahuja, Prabeer Barpanda
Electrochemical energy storage has recently seen tremendous emphasis being placed on the large-scale (power) grid storage. Sodium-ion batteries are capable of achieving this goal with economic viability. In a recent breakthrough in sodium-ion battery research, the alluaudite framework (Na2Fe2(SO4)3) has been reported, with the highest Fe(3+)/Fe(2+) redox potential (ca. 3.8 V, Barpanda, et al., Nat. Commun., 2014, 5, 4358). Exploring this high-voltage sodium insertion system, we report the discovery of Na2+2xCo2-x(SO4)3 (x = 0...
November 24, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27881558/the-american-heart-association-s-new-institute-for%C3%A2-precision-cardiovascular-medicine
#9
Steven R Houser
"One size does not fit all." These 6 simple words represent the fundamental concept driving an unprecedented initiative of the American Heart Association, the Institute for Precision Cardiovascular Medicine. In the field of heart disease and stroke research, we have seen enormous knowledge advances in recent decades, all of which have led to breakthroughs in our ability to treat and prevent these illnesses. We celebrate these advances because they are allowing us to save and improve more lives than ever before...
November 22, 2016: Circulation
https://www.readbyqxmd.com/read/27875627/immunotherapy-approaches-in-the-treatment-of-malignant-brain-tumors
#10
REVIEW
Anastasie M Dunn-Pirio, Gordana Vlahovic
Glioblastoma is the most common malignant primary brain tumor. Despite standard-of-care treatment, consisting of maximal surgical resection followed by chemoradiation, both morbidity and mortality associated with this disease remain very poor. Therefore, there is an urgent need for more efficacious and well tolerated therapies. Advancing knowledge of the intricate interplay between malignant gliomas and the immune system, coupled with the recent launch of immunotherapy research for other cancers, has led to a veritable increase in immunotherapy investigation for glioblastoma and other malignant gliomas...
November 22, 2016: Cancer
https://www.readbyqxmd.com/read/27870047/a-keystone-ecologist-robert-treat-paine-1933-2016
#11
James A Estes, Paul K Dayton, Peter Kareiva, Simon A Levin, Jane Lubchenco, Bruce A Menge, Stephen R Palumbi, Mary E Power, John Terborgh
Robert T. Paine, who passed away on 13 June 2016, is among the most influential people in the history of ecology. Paine was an experimentalist, a theoretician, a practitioner, and proponent of the "ecology of place," and a deep believer in the importance of natural history to ecological understanding. His scientific legacy grew from the discovery of a link between top-down forcing and species diversity, a breakthrough that led to the ideas of both keystone species and trophic cascades, and to our early understanding of the mosaic nature of biological communities, causes of zonation across physical gradients, and the intermediate-disturbance hypothesis of species diversity...
November 2016: Ecology
https://www.readbyqxmd.com/read/27865029/highly-intact-and-pure-oxo-functionalized-graphene-synthesis-and-electron-beam-induced-reduction
#12
Benjamin Butz, Christian Dolle, Christian E Halbig, Erdmann Spiecker, Siegfried Eigler
Controlling the chemistry of graphene is necessary to enable applications in materials and life sciences. Research beyond graphene oxide is targeted to avoid the highly defective character of the carbon framework. Herein, we show how to optimize the synthesis of oxo-functionalized graphene (oxo-G) to prepare high-quality monolayer flakes that even allow for direct transmission electron microscopy investigation at atomic resolution (HRTEM). The role of undesired residuals is addressed and sources are eliminated...
November 16, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27857067/one-volt-driven-superfast-polymer-actuators-based-on-single-ion-conductors
#13
Onnuri Kim, Hoon Kim, U Hyeok Choi, Moon Jeong Park
The key challenges in the advancement of actuator technologies related to artificial muscles include fast-response time, low operation voltages and durability. Although several researchers have tackled these challenges over the last few decades, no breakthrough has been made. Here we describe a platform for the development of soft actuators that moves a few millimetres under 1 V in air, with a superfast response time of tens of milliseconds. An essential component of this actuator is the single-ion-conducting polymers that contain well-defined ionic domains through the introduction of zwitterions; this achieved an exceptionally high dielectric constant of 76 and a 300-fold enhancement in ionic conductivity...
November 18, 2016: Nature Communications
https://www.readbyqxmd.com/read/27852766/compartmentalized-microfluidic-platforms-the-unrivaled-breakthrough-of-in-vitro-tools-for-neurobiological-research
#14
Estrela Neto, Luís Leitão, Daniela M Sousa, Cecília J Alves, Inês S Alencastre, Paulo Aguiar, Meriem Lamghari
Microfluidic technology has become a valuable tool to the scientific community, allowing researchers to study fine cellular mechanisms with higher variable control compared with conventional systems. It has evolved tremendously, and its applicability and flexibility made its usage grow exponentially and transversely to several research fields. This has been particularly noticeable in neuroscience research, where microfluidic platforms made it possible to address specific questions extending from axonal guidance, synapse formation, or axonal transport to the development of 3D models of the CNS to allow pharmacological testing and drug screening...
November 16, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27834758/current-status-of-tissue-engineering-heart-valve
#15
Toshiharu Shinoka, Hideki Miyachi
The development of surgically implantable heart valve prostheses has contributed to improved outcomes in patients with cardiovascular disease. However, there are drawbacks, such as risk of infection and lack of growth potential. Tissue-engineered heart valve (TEHV) holds great promise to address these drawbacks as the ideal TEHV is easily implanted, biocompatible, non-thrombogenic, durable, degradable, and ultimately remodels into native-like tissue. In general, three main components used in creating a tissue-engineered construct are (1) a scaffold material, (2) a cell type for seeding the scaffold, and (3) a subsequent remodeling process driven by cell accumulation and proliferation, and/or biochemical and mechanical signaling...
November 2016: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/27823566/parallel-computing-for-brain-simulation
#16
L A Pastur-Romay, A B Porto-Pazos, F Cedrón, A Pazos
The human brain is the most complex system in the known universe, but it is the most unknown system. It allows the human beings to possess extraordinary capacities. However, we don´t understand yet how and why most of these capacities are produced. For decades, it have been tried that the computers reproduces these capacities. On one hand, to help understanding the nervous system. On the other hand, to process the data in a more efficient way than before. It is intended to make the computers process the information like the brain does it...
November 4, 2016: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/27822340/stem-progenitor-cells-and-obstructive-sleep-apnea-syndrome-new-insights-for-clinical-applications
#17
REVIEW
Miruna Mihaela Micheu, Ana-Maria Rosca, Oana-Claudia Deleanu
Obstructive sleep apnea syndrome (OSAS) is a widespread disorder, characterized by recurrent upper airway obstruction during sleep, mostly as a result of complete or partial pharyngeal obstruction. Due to the occurrence of frequent and regular hypoxic events, patients with OSAS are at increased risk of cardiovascular disease, stroke, metabolic disorders, occupational errors, motor vehicle accidents and even death. Thus, OSAS has severe consequences and represents a significant economic burden. However, some of the consequences, as well as their costs can be reduced with appropriate detection and treatment...
October 26, 2016: World Journal of Stem Cells
https://www.readbyqxmd.com/read/27822264/hepatitis-b-and-its-relationship-with-oxidative-stress
#18
REVIEW
Seyed Moayed Alavian, Alireza Showraki
CONTEXT: Despite the great breakthroughs we have witnessed in the last 50 years in the prevention, diagnosis, and treatment of hepatitis B, we are still far from eradicating or even curing the disease. Achieving further progress in controlling this disease will not be possible without discovering the exact pathogenesis behind it. One prime suspect in the pathogenesis of various diseases is oxidative stress. This review will exclusively explore hepatitis B in the context of oxidative stress to obtain a more comprehensive clinical perspective on its pathogenesis and eventual medical therapy...
September 2016: Hepatitis Monthly
https://www.readbyqxmd.com/read/27820803/dereplication-of-peptidic-natural-products-through-database-search-of-mass-spectra
#19
Hosein Mohimani, Alexey Gurevich, Alla Mikheenko, Neha Garg, Louis-Felix Nothias, Akihiro Ninomiya, Kentaro Takada, Pieter C Dorrestein, Pavel A Pevzner
Peptidic natural products (PNPs) are widely used compounds that include many antibiotics and a variety of other bioactive peptides. Although recent breakthroughs in PNP discovery raised the challenge of developing new algorithms for their analysis, identification of PNPs via database search of tandem mass spectra remains an open problem. To address this problem, natural product researchers use dereplication strategies that identify known PNPs and lead to the discovery of new ones, even in cases when the reference spectra are not present in existing spectral libraries...
October 31, 2016: Nature Chemical Biology
https://www.readbyqxmd.com/read/27818710/tunable-electronic-and-magnetic-properties-of-two-dimensional-materials-and-their-one-dimensional-derivatives
#20
REVIEW
Zhuhua Zhang, Xiaofei Liu, Jin Yu, Yang Hang, Yao Li, Yufeng Guo, Ying Xu, Xu Sun, Jianxin Zhou, Wanlin Guo
: Low-dimensional materials exhibit many exceptional properties and functionalities which can be efficiently tuned by externally applied force or fields. Here we review the current status of research on tuning the electronic and magnetic properties of low-dimensional carbon, boron nitride, metal-dichalcogenides, phosphorene nanomaterials by applied engineering strain, external electric field and interaction with substrates, etc, with particular focus on the progress of computational methods and studies...
July 2016: Wiley Interdisciplinary Reviews. Computational Molecular Science
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