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https://www.readbyqxmd.com/read/28329675/trimethylation-and-acetylation-of-%C3%AE-catenin-at-lysine-49-represent-key-elements-in-esc-pluripotency
#1
Katrin Hoffmeyer, Dirk Junghans, Benoit Kanzler, Rolf Kemler
Wnt/β-catenin signaling is required for embryonic stem cell (ESC) pluripotency by inducing mesodermal differentiation and inhibiting neuronal differentiation; however, how β-catenin counter-regulates these differentiation pathways is unknown. Here, we show that lysine 49 (K49) of β-catenin is trimethylated (β-catMe3) by Ezh2 or acetylated (β-catAc) by Cbp. Significantly, β-catMe3 acts as a transcriptional co-repressor of the neuronal differentiation genes sox1 and sox3, whereas β-catAc acts as a transcriptional co-activator of the key mesodermal differentiation gene t-brachyury (t-bra)...
March 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28326329/diagnostic-value-of-ck-18-fgf-21-and-related-biomarker-panel-in-nonalcoholic-fatty-liver-disease-a-systematic-review-and-meta-analysis
#2
REVIEW
Lei He, Linfeng Deng, Quan Zhang, Jianli Guo, Jinan Zhou, Wenjian Song, Fahu Yuan
Liver biopsy still remains the gold standard for diagnosing nonalcoholic steatohepatitis (NASH), but with limitations. There is an urgent need to develop noninvasive tests that accurately distinguish NASH from simple steatosis. The purpose of this meta-analysis was to evaluate the diagnostic value of serum biomarkers including cytokeratin 18 (CK-18), fibroblast growth factor 21 (FGF-21), and combined biomarker panel (CBP) in the diagnosis of NAFLD, especially NASH. A total of 25 studies met the inclusion criteria...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28325473/foxh1-occupies-cis-regulatory-modules-prior-to-dynamic-transcription-factor-interactions-controlling-the-mesendoderm-gene-program
#3
Rebekah M Charney, Elmira Forouzmand, Jin Sun Cho, Jessica Cheung, Kitt D Paraiso, Yuuri Yasuoka, Shuji Takahashi, Masanori Taira, Ira L Blitz, Xiaohui Xie, Ken W Y Cho
The interplay between transcription factors and chromatin dictates gene regulatory network activity. Germ layer specification is tightly coupled with zygotic gene activation and, in most metazoans, is dependent upon maternal factors. We explore the dynamic genome-wide interactions of Foxh1, a maternal transcription factor that mediates Nodal/TGF-β signaling, with cis-regulatory modules (CRMs) during mesendodermal specification. Foxh1 marks CRMs during cleavage stages and recruits the co-repressor Tle/Groucho in the early blastula...
March 17, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28324996/analysis-of-the-non-stationarity-of-neural-activity-during-an-auditory-oddball-task-in-schizophrenia
#4
P Nunez, J Poza, J Gomez-Pilar, A Bachiller, C Gomez, A Lubeiro, V Molina, R Hornero
The aim of this study was to characterize brain dynamics during an auditory oddball task. For this purpose, a measure of the non-stationarity of a given time-frequency representation (TFR) was applied to electroencephalographic (EEG) signals. EEG activity was acquired from 20 schizophrenic (SCH) patients and 20 healthy controls while they underwent a three-stimulus auditory oddball task. The Degree of Stationarity (DS), a measure of the non-stationarity of the TFR, was computed using the continuous wavelet transform...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28322791/lps-depletes-phlpp-levels-in-macrophages-through-the-inhibition-of-sp1-dependent-transcriptional-regulation
#5
Neeraja P Alamuru-Yellapragada, Sanghamitra Vundyala, Soma Behera, Kishore V L Parsa
We have previously reported that bacterial endotoxin LPS attenuates expression of PHLPP, a ser/thr phosphatase, at both transcript and protein levels in different immune cells, however the underlying molecular mechanism is unknown and is of significant interest. Here, in line with the decreased transcript levels upon LPS treatment, we observed that LPS caused significant reduction in PHLPP promoter activity. We observed that SP1, a transcription factor frequently associated with inflammation, was recruited to the PHLPP promoter region...
March 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28321055/the-relationships-between-the-differences-in-the-central-blood-pressure-and-brachial-blood-pressure-and-other-factors-in-patients-with-essential-hypertension
#6
Masaki Ryuzaki, Satoshi Morimoto, Michita Niiyama, Yasufumi Seki, Naohiro Yoshida, Yoichi Oshima, Yuki Mizuguchi, Daisuke Watanabe, Takashi Ando, Atsuhiro Ichihara
Objective The management of blood pressure (BP) in hypertensive patients is the key to preventing a progression of organ damage. The brachial BP (bBP) has been used as the representative method for measuring the BP. The central BP (cBP), which is, different from the bBP due to the propagation and the reflection of the pulse wave in the arterial system, has recently received attention because it can now be estimated non-invasively. We examined the relationships between the difference in the central systolic BP (csBP) and the brachial systolic BP (bsBP) (Δ) and other factors in hypertensive patients...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28317782/assessment-of-iron-bioavailability-from-different-bread-making-processes-using-an-in-vitro-intestinal-cell-model
#7
I Rodriguez-Ramiro, C A Brearley, S F A Bruggraber, A Perfecto, P Shewry, S Fairweather-Tait
Myo-inositol hexakisphosphate (IP6), is the main iron chelator in cereals and bread. The aim of this study was to investigate the effect of three commercial baking processes (sourdough, conventional yeast and Chorleywood Bread Making Process (CBP)) on the IP6 content of wholemeal bread, its impact on iron uptake in Caco-2 cells and the predicted bioavailability of iron from these breads with added iron, simulating a mixed-meal. The sourdough process fully degraded IP6 whilst the CBP and conventional processes reduced it by 75% compared with wholemeal flour...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28316617/an-efficient-framework-for-eeg-analysis-with-application-to-hybrid-brain-computer-interfaces-based-on-motor-imagery-and-p300
#8
Jinyi Long, Jue Wang, Tianyou Yu
The hybrid brain computer interface (BCI) based on motor imagery (MI) and P300 has been a preferred strategy aiming to improve the detection performance through combining the features of each. However, current methods used for combining these two modalities optimize them separately, which does not result in optimal performance. Here, we present an efficient framework to optimize them together by concatenating the features of MI and P300 in a block diagonal form. Then a linear classifier under a dual spectral norm regularizer is applied to the combined features...
2017: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/28315726/social-distance-influences-the-outcome-evaluation-of-cooperation-and-conflict-evidence-from-event-related-potentials
#9
Yezi Chen, Jiamei Lu, Yiwen Wang, Zhouqi Feng, Bo Yuan
Previous research shows that social distance plays an important role in promoting cooperation and that subtle cues that reduce social distance increase the tendency to cooperate. However, it is unclear how social distance influences our outcome evaluation of cooperative and conflict feedback. The present study investigated the influence of social distance on cooperative and conflict behavior and the evaluation process of the cooperative and conflict outcomes, using the event-related potentials (ERPs) technique...
March 15, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28314902/potential-factors-enabling-human-body-colonization-by-animal-streptococcus-dysgalactiae-subsp-equisimilis-strains
#10
Marcin Ciszewski, Eligia M Szewczyk
Streptococcus dysgalactiae subsp. equisimilis (SDSE) is a pyogenic, Lancefield C or G streptococcal pathogen. Until recently, it has been considered as an exclusive animal pathogen. Nowadays, it is responsible for both animal infections in wild animals, pets, and livestock and human infections often clinically similar to the ones caused by group A streptococcus (Streptococcus pyogenes). The risk of zoonotic infection is the most significant in people having regular contact with animals, such as veterinarians, cattlemen, and farmers...
March 18, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28314773/glucocorticoid-receptor-signaling-represses-the-antioxidant-response-by-inhibiting-histone-acetylation-mediated-by-the-transcriptional-activator-nrf2
#11
Md Morshedul Alam, Keito Okazaki, Linh Thi Thao Nguyen, Nao Ota, Hiroshi Kitamura, Shohei Murakami, Hiroki Shima, Kazuhiko Igarashi, Hiroki Sekine, Hozumi Motohashi
NRF2 (nuclear factor erythroid 2-related factor 2) is a key transcriptional activator that mediates the inducible expression of antioxidant genes. NRF2 is normally ubiquitinated by KEAP1 (Kelch-like ECH-associated protein 1) and subsequently degraded by proteasomes. Inactivation of KEAP1 by oxidative stress or electrophilic chemicals allows NRF2 to activate transcription through binding to antioxidant response elements (AREs) and recruiting histone acetyltransferase CBP (CREB-binding protein). While KEAP1-dependent regulation is a major determinant of NRF2 activity, NRF2-mediated transcriptional activation varies from context to context, suggesting other intracellular signaling cascades may impact NRF2 function...
March 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28314201/inhibition-of-mirna-212-132-improves-the-reprogramming-of-fibroblasts-into-induced-pluripotent-stem-cells-by-de-repressing-important-epigenetic-remodelling-factors
#12
Nils Pfaff, Steffi Liebhaber, Selina Möbus, Abbas Beh-Pajooh, Jan Fiedler, Angelika Pfanne, Axel Schambach, Thomas Thum, Tobias Cantz, Thomas Moritz
MicroRNAs (miRNAs) repeatedly have been demonstrated to play important roles in the generation of induced pluripotent stem cells (iPSCs). To further elucidate the molecular mechanisms underlying transcription factor-mediated reprogramming we have established a model, which allows for the efficient screening of whole libraries of miRNAs modulating the generation of iPSCs from murine embryonic fibroblasts. Applying this model, we identified 14 miRNAs effectively inhibiting iPSC generation, including miR-132 and miR-212...
March 7, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28306348/differences-in-dyslexic-students-before-and-after-a-remediation-program-a-clinical-neuropsychological-and-event-related-potential-study
#13
Nikolaos C Zygouris, Elias Avramidis, Argyris V Karapetsas, George I Stamoulis
Developmental dyslexia is defined as an unexpected specific and persistent failure to acquire efficient reading skills despite conventional instruction, adequate intelligence and sociocultural opportunity. This article reports the outcomes of a study that evaluated the implementation of a 4-month intervention program. The intervention consisted of structured activities aiming at improving (a) the children's phonological awareness, (b) their visual and auditory memory, (c) their visual discrimination ability, and (d) their text comprehension...
March 17, 2017: Applied Neuropsychology. Child
https://www.readbyqxmd.com/read/28303949/the-processing-of-body-expressions-during-emotional-scenes-the-modulation-role-of-attachment-styles
#14
Yuanxiao Ma, Xu Chen, Guangming Ran, Haijing Ma, Xing Zhang, Guangzeng Liu
There is broad evidence indicating that contextual information influence the processing of emotional stimuli. However, attachment theory suggests that attachment styles contribute to the ways in which people perceive emotional events. To shed light on whether the processing of body expressions during different emotional scenes is modulated by attachment styles, attachment-related electrophysiological differences were measured using event-related potentials. For avoidantly attached group, our results suggested that larger N170 amplitudes were educed by neutral bodies than angry bodies, which was found only in neutral scene...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302137/mutations-of-crebbp-and-socs1-are-independent-prognostic-factors-in-diffuse-large-b-cell-lymphoma-mutational-analysis-of-the-sakk-38-07-prospective-clinical-trial-cohort
#15
Darius Juskevicius, David Jucker, Dirk Klingbiel, Christoph Mamot, Stephan Dirnhofer, Alexandar Tzankov
BACKGROUND/PURPOSE: Recently, the mutational background of diffuse large B cell lymphoma (DLBCL) has been revealed, identifying specific genetic events that drive lymphomagenesis. However, the prognostic value of these mutations remains to be determined. Prognostic biomarkers in DLBCL are urgently needed, since the current clinical parameter-based factors (e.g., International Prognostic Index (IPI)) are insufficient, particularly in identifying patients with poor prognosis who might benefit from alternative treatments...
March 17, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28301306/two-possible-modes-of-pioneering-associated-with-combinations-of-h2a-z-and-p300-cbp-at-nucleosome-occupied-enhancers
#16
Pierre Cauchy, Frederic Koch, Jean-Christophe Andrau
Pioneer transcription factors are defined by their ability to bind nucleosome-occupied regions. Here, we discuss the properties of nucleosomes bound by pioneers at enhancer regions. We describe how select pioneers bind nucleosome-occupied or -depleted enhancer sites. Importantly, by revisiting and expanding existing data sets, we show differential H2A.Z and p300/CBP association at bound enhancers, highlighting two possible pioneering modes.
February 13, 2017: Transcription
https://www.readbyqxmd.com/read/28299977/identification-of-lymph-node-metastasis-related-micrornas-in-lung-adenocarcinoma-and-analysis-of-the-underlying-mechanisms-using-a-bioinformatics-approach
#17
Li Yan, Demin Jiao, Huizhen Hu, Jian Wang, Xiali Tang, Jun Chen, Qingyong Chen
This study aimed to screen lymphatic metastasis-related microRNAs (miRNAs) in lung adenocarcinoma and explore their underlying mechanisms using bioinformatics. The miRNA expression in primary lung adenocarcinoma, matched adjacent non-tumorigenic and lymph node metastasis tissues of patients were profiled via microarray. The screened metastasis-related miRNAs were then validated using quantitative real-time PCR in a second cohort of lung adenocarcinoma patients with lymphatic metastasis. Significance was determined using a paired t-test...
April 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28299666/runx3-and-p53-how-two-tumor-suppressors-cooperate-against-oncogenic-ras
#18
Jung-Won Lee, Andre van Wijnen, Suk-Chul Bae
RUNX family members play pivotal roles in both normal development and neoplasia. In particular, RUNX1 and RUNX2 are essential for determination of the hematopoietic and osteogenic lineages, respectively. RUNX3 is involved in lineage determination of various types of epithelial cells. Analysis of mouse models and human cancer specimens revealed that RUNX3 acts as a tumor suppressor via multiple mechanisms. p53-related pathways play central roles in tumor suppression through the DNA damage response and oncogene surveillance, and RUNX3 is involved in both processes...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28298889/cortical-sensitivity-to-guitar-note-patterns-eeg-entrainment-to-repetition-and-key
#19
David A Bridwell, Emily Leslie, Dakarai Q McCoy, Sergey M Plis, Vince D Calhoun
Music is ubiquitous throughout recent human culture, and many individual's have an innate ability to appreciate and understand music. Our appreciation of music likely emerges from the brain's ability to process a series of repeated complex acoustic patterns. In order to understand these processes further, cortical responses were measured to a series of guitar notes presented with a musical pattern or without a pattern. ERP responses to individual notes were measured using a 24 electrode Bluetooth mobile EEG system (Smarting mBrainTrain) while 13 healthy non-musicians listened to structured (i...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28298888/reaching-and-grasping-a-glass-of-water-by-locked-in-als-patients-through-a-bci-controlled-humanoid-robot
#20
Rossella Spataro, Antonio Chella, Brendan Allison, Marcello Giardina, Rosario Sorbello, Salvatore Tramonte, Christoph Guger, Vincenzo La Bella
Locked-in Amyotrophic Lateral Sclerosis (ALS) patients are fully dependent on caregivers for any daily need. At this stage, basic communication and environmental control may not be possible even with commonly used augmentative and alternative communication devices. Brain Computer Interface (BCI) technology allows users to modulate brain activity for communication and control of machines and devices, without requiring a motor control. In the last several years, numerous articles have described how persons with ALS could effectively use BCIs for different goals, usually spelling...
2017: Frontiers in Human Neuroscience
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