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https://www.readbyqxmd.com/read/28748323/mechanisms-of-protein-homeostasis-proteostasis-maintain-stem-cell-identity-in-mammalian-pluripotent-stem-cells
#1
REVIEW
Alireza Noormohammadi, Giuseppe Calculli, Ricardo Gutierrez-Garcia, Amirabbas Khodakarami, Seda Koyuncu, David Vilchez
Protein homeostasis, or proteostasis, is essential for cell function, development, and organismal viability. The composition of the proteome is adjusted to the specific requirements of a particular cell type and status. Moreover, multiple metabolic and environmental conditions challenge the integrity of the proteome. To maintain the quality of the proteome, the proteostasis network monitors proteins from their synthesis through their degradation. Whereas somatic stem cells lose their ability to maintain proteostasis with age, immortal pluripotent stem cells exhibit a stringent proteostasis network associated with their biological function and intrinsic characteristics...
July 26, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28748105/a-feasibility-study-of-the-mini-after-telephone-intervention-for-the-management-of-fear-of-recurrence-in-breast-cancer-survivors-a-mixed-methods-study-protocol
#2
Susanne Cruickshank, Emma Steel, Deborah Fenlon, Jo Armes, Karen Scanlon, Elspeth Banks, Gerald Humphris
BACKGROUND: Fear of recurrence (FoR) is a major concern for patients following treatment for primary breast cancer, affecting 60-99% of breast cancer survivors. Mini-AFTER is a brief intervention developed to address this fear, that breast care nurses are ideally placed to deliver. However, their interest in delivering such an intervention is unknown and crucial to its introduction. This study aims to assess the perceived feasibility of the Mini-AFTER telephone intervention for implementation by breast care nurses to manage moderate levels of fear of recurrence among breast cancer survivors...
2018: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/28747994/lignin-valorization-lignin-nanoparticles-as-high-value-bio-additive-for-multifunctional-nanocomposites
#3
Dong Tian, Jinguang Hu, Jie Bao, Richard P Chandra, Jack N Saddler, Canhui Lu
BACKGROUND: Although conversion of low value but high-volume lignin by-product to its usable form is one of the determinant factors for building an economically feasible integrated lignocellulose biorefinery, it has been challenged by its structural complexity and inhomogeneity. We and others have shown that uniform lignin nanoparticles can be produced from a wide range of technical lignins, despite the varied lignocellulosic biomass and the pretreatment methods/conditions applied. This value-added nanostructure lignin enriched with multifunctional groups can be a promising versatile material platform for various downstream utilizations especially in the emerging nanocomposite fields...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28747768/controlling-adult-stem-cell-behavior-using-nanodiamond-reinforced-hydrogel-implication-in-bone-regeneration-therapy
#4
Settimio Pacelli, Ryan Maloney, Aparna R Chakravarti, Jonathan Whitlow, Sayantani Basu, Saman Modaresi, Stevin Gehrke, Arghya Paul
Nanodiamonds (NDs) have attracted considerable attention as drug delivery nanocarriers due to their low cytotoxicity and facile surface functionalization. Given these features, NDs have been recently investigated for the fabrication of nanocomposite hydrogels for tissue engineering. Here we report the synthesis of a hydrogel using photocrosslinkable gelatin methacrylamide (GelMA) and NDs as a three-dimensional scaffold for drug delivery and stem cell-guided bone regeneration. We investigated the effect of different concentration of NDs on the physical and mechanical properties of the GelMA hydrogel network...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28747611/histone-deacetylase-1-inhibition-protects-against-hypoxia-induced-swelling-in-h9c2-cardiomyocytes-through-regulating-cell-stiffness
#5
Yi Li, Zhengyi Zhang, Xiangnan Zhou, Rui Li, Yan Cheng, Bo Shang, Yu Han, Bin Liu, Xiaodong Xie
BACKGROUND: The process of cardiomyocyte swelling involves changes of biomechanical properties and profiles of cellular genes. Although many genes have been proved to regulate cell edema of cardiomyocyte, the mechanisms involved in this event, as well as the biomechanical properties of swelling cell, remain unknown.Methods and Results:Whether histone deacetylase 1 (HDAC1) inhibition protects against hypoxia-induced H9c2 cardiomyocyte swelling is examined in this study. Hypoxia-induced changes in the biomechanical properties and cytoskeletal structure that are relevant to cell swelling were also determined...
July 26, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28746815/higher-order-areas-of-the-mouse-visual-cortex
#6
Lindsey L Glickfeld, Shawn R Olsen
The brain has evolved to transform sensory information in the environment into neural representations that can be used for perception and action. Higher-order sensory cortical areas, with their increasingly complex receptive fields and integrative properties, are thought to be critical nodes for this function. This is especially true in the primate visual cortex, in which functionally specialized areas are engaged in parallel streams to support diverse computations. Recent anatomical and physiological studies of the mouse visual cortex have revealed a similarly complex network of specialized higher-order areas...
July 26, 2017: Annual Review of Vision Science
https://www.readbyqxmd.com/read/28745929/molecular-and-cellular-mechanisms-of-palate-development
#7
C Li, Y Lan, R Jiang
Development of the mammalian secondary palate involves highly dynamic morphogenetic processes, including outgrowth of palatal shelves from the oral side of the embryonic maxillary prominences, elevation of the initially vertically oriented palatal shelves to the horizontal position above the embryonic tongue, and subsequently adhesion and fusion of the paired palatal shelves at the midline to separate the oral cavity from the nasal cavity. Perturbation of any of these processes could cause cleft palate, a common birth defect that significantly affects patients' quality of life even after surgical treatment...
April 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28745863/sandwich-type-nbs2-s-i-doped-graphene-for-high-sulfur-loaded-ultrahigh-rate-and-long-life-lithium-sulfur-batteries
#8
Zhubing Xiao, Zhi Yang, Linjie Zhang, Hui Pan, Ruihu Wang
Lithium-sulfur batteries practically suffer from short cycling life, low sulfur utilization and safety concerns, particularly at ultrahigh rate and high sulfur loading. To address these problems, we have designed and synthesized a ternary NbS2@S@IG composite consisting of sandwich-type NbS2@S enveloped by iodine-doped graphene (IG). The sandwich-type structure provides an interconnected conductive network and plane-to-point intimate contact between layered NbS2 (or IG) and sulfur particles, enabling sulfur species to be efficiently entrapped and utilized at ultrahigh rates while the structural integrity is well maintained...
July 26, 2017: ACS Nano
https://www.readbyqxmd.com/read/28745564/patient-and-clinician-perspectives-of-an-integrated-electronic-medication-prescribing-and-dispensing-system-a-qualitative-study-at-a-multisite-australian-hospital-network
#9
Grace Lau, Jayde Ho, Susan Lin, Karen Yeoh, Tiffany Wan, Marisa Hodgkinson
BACKGROUND: While clinician attitudes towards electronic prescribing (e-prescribing) systems have been widely studied, little is known about the perspectives of patients, despite being the primary beneficiaries of these systems. OBJECTIVE: The objective of this study is to explore and compare patient and clinician attitudes towards an integrated e-prescribing and dispensing system, in order to guide improvements in system implementation, service delivery and enhancements to system functionality...
January 1, 2017: HIM Journal
https://www.readbyqxmd.com/read/28744812/in-vivo-effects-of-dexamethasone-on-blood-gene-expression-in-ataxia-telangiectasia
#10
Michele Menotta, Sara Biagiotti, Sara Orazi, Luigia Rossi, Luciana Chessa, Vincenzo Leuzzi, Daniela D'Agnano, Alessandro Plebani, Annarosa Soresina, Mauro Magnani
Ataxia telangiectasia (AT) is a rare incurable genetic disease caused by biallelic mutations in the Ataxia telangiectasia-mutated gene. Intra-erythrocyte infusion of dexamethasone improves clinical outcomes in AT patients; however, the molecular mechanisms that lead to this improvement remain unknown. Hence, to gain a better understanding of these mechanisms, we assessed the effects of glucocorticoid administration on gene expression in the blood of AT patients. Whole blood was obtained from nine children enrolled in a phase two clinical trial, who were being treated with dexamethasone (AT Dexa), from six untreated AT patients (AT) and from six healthy volunteers (WT)...
July 25, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28743667/integrative-analysis-of-mrna-and-mirna-expression-profiles-in-oral-lichen-planus-preliminary-results
#11
Junjun Chen, Guanhuan Du, Yufeng Wang, Linjun Shi, Jun Mi, Guoyao Tang
OBJECTIVE: Oral lichen planus (OLP), a chronic inflammatory disease of unknown etiology, is considered a potentially malignant oral disorder. The aim of the present study was to analyze candidate microRNAs (miRNAs) and genes from patients with OLP and healthy controls (HCs). STUDY DESIGN: Biopsy specimens of the oral mucosa were collected from patients with OLP (n = 9) and from HCs (n = 4). Differentially expressed miRNAs and differentially expressed genes were screened by using next-generation sequencing with DESeq and edgeR software algorithms...
June 8, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28743454/convergence-of-primary-sensory-cortex-and-cerebellar-nuclei-pathways-in-the-whisker-system
#12
REVIEW
Carmen B Schäfer, Freek E Hoebeek
To safely maneuver through the environment the brain needs to compare active sensory information with ongoing motor programs. This process occurs at various levels in the brain: at the lower level, i.e. in the spinal cord, reflexes are generated for the most primitive motor responses; at the intermediate level, i.e., in the brainstem, various nuclei co-process sensory- and motor-related inputs; and, at the higher level cerebellum and thalamo-cortical networks individually compute suitable commands for fine-tuned motor output...
July 22, 2017: Neuroscience
https://www.readbyqxmd.com/read/28742291/evaluating-the-effect-of-the-changes-in-fda-guidelines-for-clozapine-monitoring
#13
Ryan S Sultan, Mark Olfson, Christoph U Correll, Erica J Duncan
BACKGROUND: Concerns exist that clozapine is underutilized in the management of treatment-resistant schizophrenia. Although a 2015 change in the US Food and Drug Administration (FDA) monitoring recommendations lowered the threshold of the absolute neutrophil count for treatment interruption from 1,500/μL to 1,000/μL and removed white blood cell count thresholds from the monitoring algorithm, the implications of this policy change on clozapine interruptions remain unknown. METHODS: We analyzed outpatient prescribing records for antipsychotic medications in the Veterans Integrated Service Network 7 (VISN 7) database between 1999 and 2012 to assess the potential impact of the recent changes in FDA neutropenia monitoring recommendations on clozapine treatment discontinuation...
July 18, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28742153/reconstructing-the-regulatory-circuit-of-cell-fate-determination-in-yeast-mating-response
#14
Bin Shao, Haiyu Yuan, Rongfei Zhang, Xuan Wang, Shuwen Zhang, Qi Ouyang, Nan Hao, Chunxiong Luo
Massive technological advances enabled high-throughput measurements of proteomic changes in biological processes. However, retrieving biological insights from large-scale protein dynamics data remains a challenging task. Here we used the mating differentiation in yeast Saccharomyces cerevisiae as a model and developed integrated experimental and computational approaches to analyze the proteomic dynamics during the process of cell fate determination. When exposed to a high dose of mating pheromone, the yeast cell undergoes growth arrest and forms a shmoo-like morphology; however, at intermediate doses, chemotropic elongated growth is initialized...
July 24, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28742050/asymptotic-tracking-controller-design-for-nonlinear-systems-with-guaranteed-performance
#15
Bo Fan, Qinmin Yang, Sarangapani Jagannathan, Youxian Sun
In this paper, a novel adaptive control strategy is presented for the tracking control of a class of multi-input-multioutput uncertain nonlinear systems with external disturbances to place user-defined time-varying constraints on the system state. Our contribution includes a step forward beyond the usual stabilization result to show that the states of the plant converge asymptotically, as well as remain within user-defined time-varying bounds. To achieve the new results, an error transformation technique is first established to generate an equivalent nonlinear system from the original one, whose asymptotic stability guarantees both the satisfaction of the time-varying restrictions and the asymptotic tracking performance of the original system...
July 21, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28742049/reduced-and-full-order-observers-for-delayed-genetic-regulatory-networks
#16
Xian Zhang, Xiaofei Fan, Ligang Wu
This paper is centered upon the state estimation for delayed genetic regulatory networks. Our aim is at estimating the concentrations of mRNAs and proteins by designing reduced-order and full-order state observers based on available network outputs. We introduce a Lyapunov-Krasovskii functional including quadruplicate integrals, and estimate its derivative by employing the Wirtinger-type integral inequalities, reciprocal convex technique, and convex technique. From which, delay-dependent sufficient conditions, in the form of linear matrix inequalities (LMIs), are investigated to ensure that the resultant error system is asymptotically stable...
July 21, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28741694/reduced-parahippocampal-volume-and-psychosis-symptoms-in-alzheimer-s-disease
#17
Emma McLachlan, Jennifer Bousfield, Robert Howard, Suzanne Reeves
OBJECTIVE: Establishing structural imaging correlates of psychosis symptoms in Alzheimer's disease (AD) could localise pathology and target symptomatic treatment. This study investigated whether psychosis symptoms are associated with visuoperceptual or frontal networks, and whether regional brain volume differences could be linked with the paranoid (persecutory delusions) or misidentification (misidentification phenomena and/or hallucinations) subtypes. METHODS: A total of 104 patients with probable AD (AddNeuroMed; 47 psychotic, 57 non-psychotic), followed up for at least one year with structural MRI at baseline...
July 25, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28741415/gram-negative-bacterial-membrane-vesicle-release-in-response-to-the-host-environment-different-threats-same-trick
#18
Charlotte Volgers, Paul H M Savelkoul, Frank R M Stassen
Bacteria are confronted with a multitude of stressors when occupying niches within the host. These stressors originate from host defense mechanisms, other bacteria during niche competition or result from physiological challenges such as nutrient limitation. To counteract these stressors, bacteria have developed a stress-induced network to mount the adaptations required for survival. These stress-induced adaptations include the release of membrane vesicles from the bacterial envelope. Membrane vesicles can provide bacteria with a plethora of immediate and ultimate benefits for coping with environmental stressors...
July 25, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28741222/network-of-anatomical-texts-nanatex-an-open-source-project-for-visualizing-the-interaction-between-anatomical-terms
#19
Ryusuke Momota, Aiji Ohtsuka
Anatomy is the science and art of understanding the structure of the body and its components in relation to the functions of the whole-body system. Medicine is based on a deep understanding of anatomy, but quite a few introductory-level learners are overwhelmed by the sheer amount of anatomical terminology that must be understood, so they regard anatomy as a dull and dense subject. To help them learn anatomical terms in a more contextual way, we started a new open-source project, the Network of Anatomical Texts (NAnaTex), which visualizes relationships of body components by integrating text-based anatomical information using Cytoscape, a network visualization software platform...
July 24, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28741036/network-based-subcellular-proteomics-in-monocyte-membrane-revealed-novel-candidate-genes-involved-in-osteoporosis
#20
Y Zeng, L Zhang, W Zhu, H He, H Sheng, Q Tian, F-Y Deng, L-S Zhang, H-G Hu, H-W Deng
In this study, label-free-based quantitative subcellular proteomics integrated with network analysis highlighted several candidate genes including P4HB, ITGB1, CD36, and ACTN1 that may be involved in osteoporosis. All of them are predicted as significant membrane proteins with high confidence and enriched in bone-related biological process. The results were further verified in transcriptomic and genomic levels. INTRODUCTION: Osteoporosis is a metabolic bone disease mainly characterized by low bone mineral density (BMD)...
July 24, 2017: Osteoporosis International
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