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https://www.readbyqxmd.com/read/29776629/clinical-implication-of-micrornas-in-molecular-pathology-an-update-for-2018
#1
REVIEW
Seema Sethi, Sajiv Sethi, Martin H Bluth
MicroRNAs (miRNAs) are poised to provide diagnostic, prognostic, and therapeutic targets for several diseases including malignancies for precision medicine applications. The miRNAs have immense potential in the clinical arena because they can be detected in the blood, serum, tissues (fresh and formalin-fixed paraffin-embedded), and fine-needle aspirate specimens. The most attractive feature of miRNA-based therapy is that a single miRNA could be useful for targeting multiple genes that are deregulated in cancers, which can be further investigated through systems biology and network analysis that may provide cancer-specific personalized therapy...
June 2018: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/29775582/src-3-coactivator-governs-dynamic-estrogen-induced-chromatin-looping-interactions-during-transcription
#2
Anil K Panigrahi, Charles E Foulds, Rainer B Lanz, Ross A Hamilton, Ping Yi, David M Lonard, Ming-Jer Tsai, Sophia Y Tsai, Bert W O'Malley
Enhancers are thought to activate transcription by physically contacting promoters via looping. However, direct assays demonstrating these contacts are required to mechanistically verify such cellular determinants of enhancer function. Here, we present versatile cell-free assays to further determine the role of enhancer-promoter contacts (EPCs). We demonstrate that EPC is linked to mutually stimulatory transcription at the enhancer and promoter in vitro. SRC-3 was identified as a critical looping determinant for the estradiol-(E2)-regulated GREB1 locus...
May 17, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29773510/implications-of-the-abcd-study-for-developmental-neuroscience
#3
Sarah W Feldstein Ewing, James M Bjork, Monica Luciana
The Adolescent Brain Cognitive Development Study (ABCD) will capture a breadth of multi-faceted biobehavioral, environmental, familial, and genetic longitudinal developmental open-access data from over 11,000 9-10 year olds throughout the United States of America (USA) for an envisioned ten-year span. This will subsequently represent the largest study ever attempted with this level of brain phenotypic detail. This study holds the opportunity for exciting advances in the understanding of typical adolescent neurodevelopment, discovery of neurodevelopmental underpinnings of mental illness, as well as the neurodevelopmental influences of (and on) social factors, substance use, and critically - their interaction...
May 14, 2018: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/29770047/emerging-infectious-diseases-prediction-and-detection
#4
N H Ogden, P AbdelMalik, Jrc Pulliam
Emerging infectious diseases (EIDs), including West Nile virus, severe acute respiratory syndrome (SARS) and Lyme disease, have had a direct effect within Canada, while many more EIDs such as Zika, chikungunya and Ebola are a threat to Canadians while travelling. Over 75% of EIDs affecting humans are, or were originally, zoonoses (infectious diseases transmitted from animals to humans). There are two main ways by which infectious diseases can emerge: by changes in their geographical ranges and by adaptive emergence, a genetic change in a microorganism that results in it becoming capable of invading a new niche, often by jumping to a new host species such as humans...
October 5, 2017: Canada Communicable Disease Report, Relevé des Maladies Transmissibles Au Canada
https://www.readbyqxmd.com/read/29769665/bioengineering-strategies-to-accelerate-stem-cell-therapeutics
#5
REVIEW
Christopher M Madl, Sarah C Heilshorn, Helen M Blau
Although only a few stem cell-based therapies are currently available to patients, stem cells hold tremendous regenerative potential, and several exciting clinical applications are on the horizon. Biomaterials with tuneable mechanical and biochemical properties can preserve stem cell function in culture, enhance survival of transplanted cells and guide tissue regeneration. Rapid progress with three-dimensional hydrogel culture platforms provides the opportunity to grow patient-specific organoids, and has led to the discovery of drugs that stimulate endogenous tissue-specific stem cells and enabled screens for drugs to treat disease...
May 2018: Nature
https://www.readbyqxmd.com/read/29769565/adaptation-to-criticality-through-organizational-invariance-in-embodied-agents
#6
Miguel Aguilera, Manuel G Bedia
Many biological and cognitive systems do not operate deep within one or other regime of activity. Instead, they are poised at critical points located at phase transitions in their parameter space. The pervasiveness of criticality suggests that there may be general principles inducing this behaviour, yet there is no well-founded theory for understanding how criticality is generated at a wide span of levels and contexts. In order to explore how criticality might emerge from general adaptive mechanisms, we propose a simple learning rule that maintains an internal organizational structure from a specific family of systems at criticality...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769080/a-complex-culturally-targeted-intervention-to-reduce-hispanic-disparities-in-living-kidney-donor-transplantation-an-effectiveness-implementation-hybrid-study-protocol
#7
Elisa J Gordon, Jungwha Lee, Raymond H Kang, Juan Carlos Caicedo, Jane L Holl, Daniela P Ladner, Michelle D Shumate
BACKGROUND: The shortage of organs for kidney transplantation for patients with end-stage renal disease (ESRD) is magnified in Hispanics/Latin Americans in the United States. Living donor kidney transplantation (LDKT) is the treatment of choice for ESRD. However, compared to their representation on the transplant waitlist, fewer Hispanics receive a LDKT than non-Hispanic whites. Barriers to LDKT for Hispanics include: lack of knowledge, cultural concerns, and language barriers. Few interventions have been designed to reduce LDKT disparities...
May 16, 2018: BMC Health Services Research
https://www.readbyqxmd.com/read/29765414/developmental-pathways-pervade-stem-cell-responses-to-evolving-extracellular-matrices-of-3d-bioprinted-microenvironments
#8
Quyen A Tran, Visar Ajeti, Brian T Freeman, Paul J Campagnola, Brenda M Ogle
Developmental studies and 3D in vitro model systems show that the production and engagement of extracellular matrix (ECM) often precede stem cell differentiation. Yet, unclear is how the ECM triggers signaling events in sequence to accommodate multistep process characteristic of differentiation. Here, we employ transcriptome profiling and advanced imaging to delineate the specificity of ECM engagement to particular differentiation pathways and to determine whether specificity in this context is a function of long-term ECM remodeling...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29762692/overarching-immunodominance-patterns-and-substantial-diversity-in-specificity-and-functionality-in-the-circulating-human-influenza-a-and-b-cd4-t-cell-repertoire
#9
Katherine A Richards, John J Treanor, Jennifer L Nayak, Andrea J Sant
There is limited information on the antigen specificity and functional potential of the influenza-specific CD4 T cell repertoire in humans. Here, ELISPOT assays were used to examine circulating CD4 T cell influenza specificities directly ex vivo in healthy adults.  Our studies revealed CD4 T cell reactivity to multiple influenza proteins, including hemagglutinins, NA, M1 and NP. Unexpectedly, the immunodominance hierarchies and functional potential of cells reactive toward influenza A were distinct from influenza B...
May 12, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29759132/the-gamma-aminobutyric-acid-b-receptor-in-depression-and-reward
#10
REVIEW
Laura H Jacobson, Styliani Vlachou, David A Slattery, Xia Li, John F Cryan
The metabotropic gamma-aminobutyric acid B (GABAB ) receptor was the first described obligate G protein-coupled receptor heterodimer and continues to set the stage for discoveries in G protein-coupled receptor signaling complexity. In this review, dedicated to the life and work of Athina Markou, we explore the role of GABAB receptors in depression, reward, and the convergence of these domains in anhedonia, a shared symptom of major depressive disorder and withdrawal from drugs of abuse. GABAB receptor expression and function are enhanced by antidepressants and reduced in animal models of depression...
June 1, 2018: Biological Psychiatry
https://www.readbyqxmd.com/read/29758728/amphibian-sacculus-and-the-forced-kuramoto-model-with-intrinsic-noise-and-frequency-dispersion
#11
Seung Ji, Dolores Bozovic, Robijn Bruinsma
The amphibian sacculus (AS) is an end organ that specializes in the detection of low-frequency auditory and vestibular signals. In this paper, we propose a model for the AS in the form of an array of phase oscillators with long-range coupling, subject to a steady load that suppresses spontaneous oscillations. The array is exposed to significant levels of frequency dispersion and intrinsic noise. We show that such an array can be a sensitive and robust subthreshold detector of low-frequency stimuli, though without significant frequency selectivity...
April 2018: Physical Review. E
https://www.readbyqxmd.com/read/29758626/balancing-selfishness-and-norm-conformity-can-explain-human-behavior-in-large-scale-prisoner-s-dilemma-games-and-can-poise-human-groups-near-criticality
#12
John Realpe-Gómez, Giulia Andrighetto, Luis Gustavo Nardin, Javier Antonio Montoya
Cooperation is central to the success of human societies as it is crucial for overcoming some of the most pressing social challenges of our time; still, how human cooperation is achieved and may persist is a main puzzle in the social and biological sciences. Recently, scholars have recognized the importance of social norms as solutions to major local and large-scale collective action problems, from the management of water resources to the reduction of smoking in public places to the change in fertility practices...
April 2018: Physical Review. E
https://www.readbyqxmd.com/read/29754806/machine-learning-in-cardiac-ct-basic-concepts-and-contemporary-data
#13
REVIEW
Gurpreet Singh, Subhi J Al'Aref, Marly Van Assen, Timothy Suyong Kim, Alexander van Rosendael, Kranthi K Kolli, Aeshita Dwivedi, Gabriel Maliakal, Mohit Pandey, Jing Wang, Virginie Do, Manasa Gummalla, Carlo N De Cecco, James K Min
Propelled by the synergy of the groundbreaking advancements in the ability to analyze high-dimensional datasets and the increasing availability of imaging and clinical data, machine learning (ML) is poised to transform the practice of cardiovascular medicine. Owing to the growing body of literature validating both the diagnostic performance as well as the prognostic implications of anatomic and physiologic findings, coronary computed tomography angiography (CCTA) is now a well-established non-invasive modality for the assessment of cardiovascular disease...
April 30, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29753563/critical-appraisal-of-the-2018-acc-scientific-sessions-late-breaking-trials-from-a-statistician-s-perspective
#14
REVIEW
Stuart J Pocock, Tim J Collier
The late-breaking clinical trials presentations at the American College of Cardiology Scientific Sessions in March 2018 are an important contribution to the field of cardiology. This paper presents a constructive critical appraisal of 7 key studies: ODYSSEY OUTCOMES (Evaluation of Cardiovascular Outcomes After an Acute Coronary Syndrome During Treatment With Alirocumab), VEST (Vest Prevention of Early Sudden Death Trial), SECURE-PCI (Statins Evaluation in Coronary Procedures and Revascularization), TREAT (Ticagrelor in Patients with ST-Elevation Myocardial Infarction treated with Pharmacological Thrombolysis), POISE (PeriOperative ISchemic Evaluation), SMART-DATE (Safety of 6-Month Duration of Dual Antiplatelet Therapy After Percutaneous Coronary Intervention in Patients With Acute Coronary Syndrome), and CVD-REAL 2 (Comparative Effectiveness of Cardiovascular Outcomes in New Users of SGLT-2 Inhibitors)...
May 7, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29753351/evaluating-and-valuing-drugs-for-rare-conditions-no-easy-answers
#15
Daniel A Ollendorf, Richard H Chapman, Steven D Pearson
We find ourselves in an era of unprecedented growth in the development and use of so-called "orphan" drugs to treat rare diseases, which are poised to represent more than one-fifth of pharmaceutical expenditures by 2022. This widespread use has been facilitated by legislative and regulatory incentives in both the United States and abroad, yet US payers and health systems have not yet made a concerted effort to understand whether and how rare diseases require special considerations on their part and how to adapt traditional methods of health technology assessment and economic evaluation to accommodate these situations...
May 2018: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/29751097/investigating-the-effect-of-ascorbate-on-the-fe-ii-catalyzed-transformation-of-the-poorly-crystalline-iron-mineral-ferrihydrite
#16
Wei Xiao, Adele M Jones, Richard N Collins, T David Waite
The inorganic core of the iron storage protein, ferritin, is recognized as being analogous to the poorly crystalline iron mineral, ferrihydrite (Fh). Fh is also abundant in soils where it is central to the redox cycling of particular soil contaminants and trace elements. In geochemical circles, it is recognized that Fh can undergo Fe(II)-catalyzed transformation to form more crystalline iron minerals, vastly altering the reactivity of the iron oxide and, in some cases, the redox poise of the system. Of relevance to both geochemical and biological systems, we investigate here if the naturally occurring reducing agent, ascorbate, can effect such an Fe(II)-catalyzed transformation of Fh at 25 °C and circumneutral pH...
May 8, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29749658/contemporary-understanding-of-the-secretory-granules-in-human-eosinophils
#17
REVIEW
Rossana C N Melo, Peter F Weller
Eosinophil secretory (specific) granules have a unique morphology and are both a morphologic hallmark of eosinophils and fundamental to eosinophil-mediated responses. Eosinophil mediators with multiple functional activities are presynthesized and stored within these granules, poised for very rapid, stimulus-induced secretion. The structural organization and changes of eosinophil specific granules are revealing in demonstrating the complex and diverse secretory activities of this cell. Here, we review our current knowledge on the architecture, composition, and function of eosinophil specific granules as highly elaborated organelles able to produce vesiculotubular carriers and to interplay with the intracellular vesicular trafficking...
May 11, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29748997/the-recycling-endosome-and-bacterial-pathogens
#18
REVIEW
Samual C Allgood, M Ramona Neunuebel
Bacterial pathogens have developed a wide range of strategies to survive within human cells. A number of pathogens multiply in a vacuolar compartment, while others can rupture the vacuole and replicate in the host cytosol. A common theme among many bacterial pathogens is the use of specialized secretion systems to deliver effector proteins into the host cell. These effectors can manipulate the host's membrane trafficking pathways to remodel the vacuole into a replication-permissive niche and prevent degradation...
May 10, 2018: Cellular Microbiology
https://www.readbyqxmd.com/read/29748402/complete-genome-sequence-of-geobacter-sulfurreducens-strain-ym18-isolated-from-river-sediment-in-japan
#19
Kengo Inoue, Yoshitoshi Ogura, Yoshihiro Kawano, Tetsuya Hayashi
Geobacter sulfurreducens is known to be a dominant species in the anode biofilms of microbial fuel cells. Here, we report the complete genome sequence of G. sulfurreducens strain YM18. Strain YM18 was isolated from a biofilm formed on an anode poised at -400 mV (versus an Ag/AgCl electrode) in a bioelectrochemical system.
May 10, 2018: Genome Announcements
https://www.readbyqxmd.com/read/29746690/retrospective-analysis-reproducibility-of-interblastomere-differences-of-mrna-expression-in-2-cell-stage-mouse-embryos-is-remarkably-poor-due-to-combinatorial-mechanisms-of-blastomere-diversification
#20
E Casser, S Israel, S Schlatt, V Nordhoff, M Boiani
STUDY QUESTION: What is the prevalence, reproducibility and biological significance of transcriptomic differences between sister blastomeres of the mouse 2-cell embryo? SUMMARY ANSWER: Sister 2-cell stage blastomeres are distinguishable from each other by mRNA analysis, attesting to the fact that differentiation starts mostly early in the mouse embryo; however, the interblastomere differences are poorly reproducible and invoke the combinatorial effects of known and new mechanisms of blastomere diversification...
May 9, 2018: Molecular Human Reproduction
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