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https://www.readbyqxmd.com/read/29141207/distinct-terb1-domains-regulate-different-protein-interactions-in-meiotic-telomere-movement
#1
Jingjing Zhang, Zhaowei Tu, Yoshinori Watanabe, Hiroki Shibuya
Meiotic telomeres attach to the nuclear envelope (NE) and drive the chromosome movement required for the pairing of homologous chromosomes. The meiosis-specific telomere proteins TERB1, TERB2, and MAJIN are required to regulate these events, but their assembly processes are largely unknown. Here, we developed a germ-cell-specific knockout mouse of the canonical telomere-binding protein TRF1 and revealed an essential role for TRF1 in directing the assembly of TERB1-TERB2-MAJIN. Further, we identified a TERB2 binding (T2B) domain in TERB1 that is dispensable for the TRF1-TERB1 interaction but is essential for the subsequent TERB1-TERB2 interaction and therefore for telomere attachment to the NE...
November 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/29141185/increased-cross-bridge-recruitment-contributes-to-transient-increase-in-force-generation-beyond-maximal-capacity-in-human-myocardium
#2
Nima Milani-Nejad, Jae-Hoon Chung, Benjamin D Canan, Vadim V Fedorov, Bryan A Whitson, Ahmet Kilic, Peter J Mohler, Paul M L Janssen
Cross-bridge attachment allows force generation to occur, and rate of tension redevelopment (ktr) is a commonly used index of cross-bridge cycling rate. Tension overshoots have been observed briefly after a slack-restretch ktr maneuver in various species of animal models and humans. In this study, we set out to determine the properties of these overshoots and their possible underlying mechanism. Utilizing human cardiac trabeculae, we have found that tension overshoots are temperature-dependent and that they do not occur at resting states...
November 12, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29140459/rbm45-competes-with-hdac1-for-binding-to-fus-in-response-to-dna-damage
#3
Juanjuan Gong, Min Huang, Fengli Wang, Xiaolu Ma, Hongmei Liu, Yingfeng Tu, Lingyu Xing, Xuefei Zhu, Hui Zheng, Junjie Fang, Xiaoling Li, Qiaochu Wang, Jiuqiang Wang, Zhongshuai Sun, Xi Wang, Yun Wang, Caixia Guo, Tie-Shan Tang
DNA damage response (DDR) is essential for genome stability and human health. Recently, several RNA binding proteins (RBPs), including fused-in-sarcoma (FUS), have been found unexpectedly to modulate this process. The role of FUS in DDR is closely linked to the pathogenesis of amyotrophic lateral sclerosis (ALS), a progressive neurodegenerative disease that affects nerve cells in the brain and the spinal cord. Given that RBM45 is also an ALS-associated RBP, we wondered whether RBM45 plays any function during this process...
November 13, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29140388/titanium-activates-the-dna-damage-response-pathway-in-oral-epithelial-cells-a-pilot-study
#4
Fernando Suárez-López Del Amo, Ivan Rudek, Vivian Petersen Wagner, Manoela D Martins, Francisco O'Valle, Pablo Galindo-Moreno, William V Giannobile, Hom-Lay Wang, Rogerio M Castilho
PURPOSE: To evaluate the effect of titanium (Ti) particles on oral epithelial cell homeostasis and the potential of dental implants to release Ti debris upon insertion. MATERIALS AND METHODS: Dental implants with varying surface treatments were employed to determine the feasibility of particle release during implant placement as well as the impact of free Ti debris on oral epithelial cells. Ti particles derived from implant surfaces were isolated and cultured in direct contact with normal oral epithelial cells for 48 hours...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140132/mediation-of-the-single-walled-carbon-nanotubes-induced-pulmonary-fibrogenic-response-by-osteopontin-and-tgf-%C3%AE-1
#5
Timur O Khaliullin, Elena R Kisin, Ashley R Murray, Naveena Yanamala, Michael R Shurin, Dmitriy W Gutkin, Liliya M Fatkhutdinova, Valerian E Kagan, Anna A Shvedova
PURPOSE OF THE STUDY: A number of in vivo studies have shown that pulmonary exposure to carbon nanotubes (CNTs) may lead to an acute local inflammatory response, pulmonary fibrosis, and granulomatous lesions. Among the factors that play direct roles in initiation and progression of fibrotic processes are epithelial-mesenchymal transition and myofibroblasts recruitment/differentiation, both mediated by transforming growth factor-β1 (TGF-β1). Yet, other contributors to TGF-β1 associated signaling, such as osteopontin (OPN) has not been fully investigated...
October 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/29138540/a-qualitative-study-exploring-issues-related-to-medication-management-in-residential-aged-care-facilities
#6
Mariani Ahmad Nizaruddin, Marhanis-Salihah Omar, Adliah Mhd-Ali, Mohd Makmor-Bakry
Background: Globally, the population of older people is on the rise. As families are burdened with the high cost of care for aging members, demand is increasing for medical care and nursing homes. Thus, medication management is crucial to ensure that residents in a care center benefit and assist the management of the care center in reducing the burden of health care. This study is aimed to qualitatively explore issues related to medication management in residential aged care facilities (RACFs)...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/29138111/recent-advances-in-melanoma-research-via-omics-platforms
#7
REVIEW
Carmen Rodríguez-Cerdeira, Alberto Molares-Vila, Miguel Carnero-Gregorio, Alberte Corbalán-Rivas
Melanoma has a high mortality rate and metastatic melanoma is highly resistant to conventional therapies. "Omics" fields such as proteomics and microRNA and exosome studies have provided new knowledge to complement the information generated by genomic studies. This work aimed to review the current status of biomarker discovery for melanoma through multi-"omics" platforms. A few sets of novel microRNAs and proteins are described, some of them with important implications in suppressing melanoma at different stages...
November 11, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/29137679/trial-of-acute-femoral-fracture-fixation-traffix-study-protocol-for-a-randomised-controlled-feasibility-trial
#8
Xavier L Griffin, Matthew L Costa, Juul Achten, Melina Dritsaki, Janis Baird, Nicholas Parsons
BACKGROUND: Distal femoral fractures are a source of considerable morbidity and best treatment is currently uncertain. The Trial of Acute Femoral Fracture Fixation (TrAFFix) is a randomised, parallel-group feasibility study designed to inform the design of a later, definitive clinical trial comparing intramedullary nails and locking plates for the treatment of distal femoral fractures. METHODS/DESIGN: Patients aged 50 years and older with a femoral fracture within the distal two Müller squares are potentially eligible for inclusion...
November 14, 2017: Trials
https://www.readbyqxmd.com/read/29136592/human-sirtuin-3-sirt3-deacetylates-histone-h3-lysine-56-to-promote-nonhomologous-end-joining-repair
#9
Amrita Sengupta, Devyani Haldar
Human sirtuin 3 (SIRT3) is a conserved NAD(+) dependent deacetylase, which functions in important cellular processes including transcription, metabolism, oxidative stress response. It is a robust mitochondrial deacetylase; however, few studies have indicated its nuclear functions. Here we report interaction of SIRT3 with core histones and identified acetylated histone H3 lysine 56 (H3K56ac) as its novel substrate, in addition to known substrates acetylated H4K16 and H3K9. Further, we showed in response to DNA damage SIRT3 localizes to the repair foci colocalizing with γH2AX and nonhomologous end joining (NHEJ) marker p53-binding protein 1 (53BP1)...
November 8, 2017: DNA Repair
https://www.readbyqxmd.com/read/29136196/analysis-of-the-natively-unstructured-rna-protein-recognition-core-in-the-escherichia-coli-rna-degradosome-and-its-interactions-with-regulatory-rna-hfq-complexes
#10
Heather A Bruce, Dijun Du, Dijana Matak-Vinkovic, Katarzyna J Bandyra, R William Broadhurst, Esther Martin, Frank Sobott, Alexander V Shkumatov, Ben F Luisi
The RNA degradosome is a multi-enzyme assembly that plays a central role in the RNA metabolism of Escherichia coli and numerous other bacterial species including pathogens. At the core of the assembly is the endoribonuclease RNase E, one of the largest E. coli proteins and also one that bears the greatest region predicted to be natively unstructured. This extensive unstructured region, situated in the C-terminal half of RNase E, is punctuated with conserved short linear motifs that recruit partner proteins, direct RNA interactions, and enable association with the cytoplasmic membrane...
November 9, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29135675/novel-strategies-to-improve-resident-selection-by-improving-cultural-fit-aoa-critical-issues
#11
Scott E Porter, Afshin E Razi, T Bennett Ramsey
Residency selection is a perennial multifactorial process that differs considerably from the recruitment processes that other professional occupations enjoy. The 2016 meeting of the American Orthopaedic Association's Council of Orthopaedic Residency Directors highlighted a series of symposia that sought to present a novel manner of resident selection. Specifically, the presenters for each symposium were asked to do the following: present some general recruitment best practices in industries outside of medicine, present how branding of a program may translate into a better interview season, investigate evidence that the applicant pool to orthopaedic surgery may have changed and that residency program brands may have to reflect this, and assess our current evaluation techniques for talent identification and resident selection with respect to a specific department's appearance or brand...
November 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29135647/the-role-of-platelet-rich-plasma-in-muscle-healing
#12
Paolo Borrione, Federica Fagnani, Alessia Di Gianfrancesco, Annamaria Mancini, Fabio Pigozzi, Yannis Pitsiladis
The healing of a muscle injury is a complex and dynamic process characterized by different overlapping phases resulting in the restoration of the anatomic continuity and function. This process, triggered by the tissue injury itself, is modulated by different growth factors capable of directing the recruitment, duplication, activation, and differentiation of different cell types. This key role played by different growth factors is the basis of the use of platelet-rich plasma in several circumstances, all of them characterized by the need of activating or ameliorating the process of tissue repair...
November 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/29135589/safety-and-effectiveness-of-a-novel-facemask-for-positive-pressure-ventilation
#13
Tod A Brown, Tamas A Szabo, Kathryn H Bridges, Michel J Sabbagh, William R Hand, Bethany J Wolf, Robert D Warters
BACKGROUND: Manual positive pressure ventilation is an essential skill in a variety of clinical situations. The C&E technique is commonly used with standard facemasks to provide effective ventilation. The Tao mask is a novel design that allows a more ergonomic grip. A seal between the mask and face is made with downward pressure of the palm, centered on the mask, and jaw lift is achieved with 4 fingers centered under the mandible. The purpose of this study was to evaluate the safety and effectiveness of the Tao mask compared to a standard mask before and after the administration of neuromuscular blockade (NMB) using 2 previously established ventilation scales...
November 10, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29135358/training-area-agencies-on-aging-case-managers-to-improve-physical-function-mood-and-behavior-in-persons-with-dementia-and-caregivers-examples-from-the-rdad-northwest-study
#14
Susan M McCurry, Rebecca G Logsdon, Kenneth C Pike, David M LaFazia, Linda Teri
The Reducing Disability in Alzheimer's Disease (RDAD) program has been shown to be an effective tool for teaching caregivers strategies to improve mood, behavior, and physical function in persons with dementia. This paper describes how RDAD has been translated and implemented for use by Area Agencies on Aging (AAA) case managers across Washington and Oregon. Modifications to the original RDAD program as part of its community translation included decreasing the number of in-person sessions while preserving all educational content; involving caregivers in exercise activities for themselves as well as acting as exercise coaches for care-receivers; and enrolling persons with cognitive impairment due to mixed etiologies...
November 14, 2017: Journal of Gerontological Social Work
https://www.readbyqxmd.com/read/29135000/bioconjugated-fluorescent-organic-nanoparticles-targeting-egfr-overexpressing-cancer-cells
#15
Adrien Faucon, Houda Benhelli-Mokrani, Fabrice Fleury, Stéphanie Dutertre, Marc Tramier, Joanna Boucard, Lénaïc Lartigue, Steven Nedellec, Philippe Hulin, Eléna Ishow
The field of optical bioimaging has considerably flourished with the advent of sophisticated microscopy techniques and ultra-bright fluorescent tools. Fluorescent organic nanoparticles (FONs) have thus recently appeared as very attractive labels for their high payload, absence of cytotoxicity and eventual biodegradation. Nevertheless, their bioconjugation to target specific receptors with high imaging contrast is scarcely performed. Moreover, assessing the reality of bioconjugation represents high challenges given the sub-nanomolar concentrations resulting from the commonly adopted nanoprecipitation fabrication process...
November 14, 2017: Nanoscale
https://www.readbyqxmd.com/read/29134288/task-relevant-brain-networks-identified-with-simultaneous-pet-mr-imaging-of-metabolism-and-connectivity
#16
Andreas Hahn, Gregor Gryglewski, Lukas Nics, Lucas Rischka, Sebastian Ganger, Helen Sigurdardottir, Chrysoula Vraka, Leo Silberbauer, Thomas Vanicek, Alexander Kautzky, Wolfgang Wadsak, Markus Mitterhauser, Markus Hartenbach, Marcus Hacker, Siegfried Kasper, Rupert Lanzenberger
Except for task-specific functional MRI, the vast majority of imaging studies assessed human brain function at resting conditions. However, tracking task-specific neuronal activity yields important insight how the brain responds to stimulation. We specifically investigated changes in glucose metabolism, functional connectivity and white matter microstructure during task performance using several recent methodological advancements. Opening the eyes and right finger tapping had elicited an increased glucose metabolism in primary visual and motor cortices, respectively...
November 13, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/29134067/modelling-the-role-of-correctional-services-on-gangs-insights-through-a-mathematical-model
#17
F Nyabadza, C P Ogbogbo, J Mushanyu
Research has shown that gang membership increases the chances of offending, antisocial behaviour and drug use. Gang membership should be acknowledged as part of crime prevention and policy designs, and when developing interventions and preventative programmes. Correctional services are designed to rehabilitate convicted offenders. We formulate a deterministic mathematical model using nonlinear ordinary differential equations to investigate the role of correctional services on the dynamics of gangs. The recruitment into gang membership is assumed to happen through an imitation process...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29132636/systematic-data-ingratiation-of-clinical-trial-recruitment-locations-for-geographic-based-query-and-visualization
#18
Jake Luo, Weiheng Chen, Min Wu, Chunhua Weng
BACKGROUND: Prior studies of clinical trial planning indicate that it is crucial to search and screen recruitment sites before starting to enroll participants. However, currently there is no systematic method developed to support clinical investigators to search candidate recruitment sites according to their interested clinical trial factors. OBJECTIVE: In this study, we aim at developing a new approach to integrating the location data of over one million heterogeneous recruitment sites that are stored in clinical trial documents...
December 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/29132269/correlation-of-concussion-symptom-profile-with-head-impact-biomechanics-a-case-for-individual-specific-injury-tolerance
#19
Steven Rowson, Stefan M Duma, Brian D Stemper, Alok S Shah, Jason Mihalik, Jaroslaw Harezlak, Larry D Riggen, Christopher C Giza, John DiFiori, Alison Brooks, Kevin K Guskiewicz, Darren Campbell, Jerry McGinty, Steve Svoboda, Ken Cameron, Steven P Broglio, Thomas McAllister, Michael McCrea
Concussion is a brain injury induced by biomechanical forces that is broadly defined as a complex pathophysiological process affecting the brain. The intricate link between biomechanical input and concussion injury response is poorly understood. We aimed to test the hypothesis that greater biomechanical forces would result in the presentation of more concussion-related symptoms that would take longer to resolve. The objective of this study was to investigate the relationship between an array of biomechanical parameters measured for concussive impacts and the presentation and resolution of concussion symptoms...
November 13, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29132256/mcp-1-produced-by-keratinocytes-is-associated-with-leucocyte-recruitment-during-elicitation-of-nickel-induced-occupational-allergic-contact-dermatitis
#20
Weihua Mai, Dongqing Lu, Xingwei Liu, Ling Chen
To investigate the expression profile of monocyte chemoattractant peptide-1 (MCP-1) by keratinocytes after nickel exposure and to identify its role for leucocyte migration during nickel-induced occupational allergic contact dermatitis (OACD), 26 workers diagnosed with nickel-induced OACD were enrolled. Skin biopsies from the positive nickel-challenged sites at different time points were assessed by immunohistochemistry (IHC) for MCP-1, CD68, CD45RO, and in situ hybridization (ISH) for MCP-1, using chronic periumbilical dermititis as controls...
January 1, 2017: Toxicology and Industrial Health
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