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Muscle differentiation

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https://www.readbyqxmd.com/read/28922779/targeting-the-myofibroblastic-cancer-associated-fibroblast-phenotype-through-inhibition-of-nox4
#1
Christopher J Hanley, Massimiliano Mellone, Kirsty Ford, Steve M Thirdborough, Toby Mellows, Steven J Frampton, David M Smith, Elena Harden, Cedric Szyndralewiez, Marc Bullock, Fergus Noble, Karwan A Moutasim, Emma V King, Pandurangan Vijayanand, Alex H Mirnezami, Timothy J Underwood, Christian H Ottensmeier, Gareth J Thomas
Background: Cancer-associated fibroblasts (CAFs) are tumor-promoting and correlate with poor survival in many cancers, which has led to their emergence as potential therapeutic targets. However, effective methods to manipulate these cells clinically have yet to be developed. Methods: CAF accumulation and prognostic significance in head and neck cancer (oral, n = 260; oropharyngeal, n = 271), and colorectal cancer (n = 56) was analyzed using immunohistochemistry...
January 1, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28922518/accelerated-epithelialization-and-improved-wound-healing-metrics-in-porcine-full-thickness-wounds-transplanted-with-full-thickness-skin-micrografts
#2
Christina L Rettinger, John L Fletcher, Anders H Carlsson, Rodney K Chan
Split-thickness skin grafting (STSG) is the current gold standard for treatment of extensive burn and traumatic skin injuries. However, STSG is limited by donor-site morbidity and availability, and often leads to scarring and wound contracture. Furthermore, these thin grafts lack dermal elements such as nerves and adnexa which are important in recapitulating normal skin function. Methods of fractional skin replacement either as minced STSGs or microscopic skin tissue columns (MSTCs) have been proposed, though these techniques have not been fully-characterized and lack evidence of regenerated adnexal structures...
September 18, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28922325/metacarpal-like-hand-classification-and-treatment-guidelines-for-microsurgical-reconstruction-with-toe-transplantation
#3
Fu-Chan Wei, Nidal F Al Deek, Yu-Te Lin, Chung-Chen Hsu, Cheng-Hung Lin
The metacarpal-like hand is a severe hand injury, never addressed before. It describes a hand that lost a significant degree of prehension through a wide array of amputations, involving all digits proximal to the functional length except in one finger or in two digits, including the thumb.Thumb condition can be used to differentiate between two types.In type I, the thumb is intact or amputated at/or distal to the interphalangeal joint (functional length); and therefore, the reconstruction is focused on fingers mainly...
September 14, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28922293/the-role-of-vitamin-d-in-cancer-cachexia
#4
Fabio Penna, Andrea Camperi, Maurizio Muscaritoli, Nicoletta Filigheddu, Paola Costelli
PURPOSE OF REVIEW: The possibility to use vitamin D supplementation to improve muscle wasting, with particular focus on cancer cachexia, is discussed. RECENT FINDINGS: Vitamin D exerts biological actions on myogenic precursor proliferation and differentiation, impinging on muscle regeneration. However, the effects of VitD supplementation in diseases associated with muscle atrophy, such as cancer cachexia, are poorly investigated. Data obtained in experimental models of cancer cachexia show that the administration of vitamin D to tumor-bearing animals is not able to prevent or delay both muscle wasting and adipose tissue depletion, despite increased expression of muscle vitamin D receptor...
September 15, 2017: Current Opinion in Supportive and Palliative Care
https://www.readbyqxmd.com/read/28921743/exercise-training-dose-differentially-alters-muscle-and-heart-capillary-density-and-metabolic-functions-in-an-obese-rat-with-metabolic-syndrome
#5
Marcus Vinicius Machado, Aline Bomfim Vieira, Fabiana Gomes da Conceição, Alessandro Rodrigues Nascimento, Antonio Claudio Lucas da Nóbrega, Eduardo Tibirica
We evaluated the effect of frequency, duration and intensity of exercise training on metabolic parameters and structural capillary density in obese rats with metabolic syndrome (MS). Wistar-Kyoto rats were fed a either standard commercial diet (CON) or high-fat diet (HFD). Animals that received the HFD were randomly separated into either a sedentary (SED) group or 8 different exercise groups that varied by the frequency, duration and intensity of training. After 12 weeks of aerobic exercise training, body composition, aerobic capacity, hemodynamic variables, metabolic parameters and capillary density in the heart and skeletal muscle were evaluated...
September 17, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28921619/alcohol-reduces-arterial-remodeling-by-inhibiting-sonic-hedgehog-stimulated-sca1-progenitor-stem-cell-expansion
#6
Emma Fitzpatrick, Xu Han, Weimin Liu, Eoin Corcoran, Denise Burtenshaw, Maryam Alshamrani, David Morrow, Jay-Christian Helt, Paul A Cahill, Eileen M Redmond
BACKGROUND: Cell and molecular mechanisms mediating the cardiovascular effects of alcohol are not fully understood. Our aim was to determine the effect of moderate Ethanol (EtOH) on Sonic Hedgehog (SHh) signaling in regulating possible Sca1(+) progenitor stem cell involvement during pathologic arterial remodeling. METHODS AND RESULTS: Partial ligation or sham-operation of the left carotid artery was performed in transgenic Sca1-eGFP mice gavaged with or without 'daily moderate' EtOH...
September 18, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28920957/klf4-dependent-perivascular-cell-plasticity-mediates-pre-metastatic-niche-formation-and-metastasis
#7
Meera Murgai, Wei Ju, Matthew Eason, Jessica Kline, Daniel W Beury, Sabina Kaczanowska, Markku M Miettinen, Michael Kruhlak, Haiyan Lei, Jack F Shern, Olga A Cherepanova, Gary K Owens, Rosandra N Kaplan
A deeper understanding of the metastatic process is required for the development of new therapies that improve patient survival. Metastatic tumor cell growth and survival in distant organs is facilitated by the formation of a pre-metastatic niche that is composed of hematopoietic cells, stromal cells and extracellular matrix (ECM). Perivascular cells, including vascular smooth muscle cells (vSMCs) and pericytes, are involved in new vessel formation and in promoting stem cell maintenance and proliferation. Given the well-described plasticity of perivascular cells, we hypothesized that perivascular cells similarly regulate tumor cell fate at metastatic sites...
September 18, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28920705/human-endothelial-progenitor-cell-derived-exosomes-increase-proliferation-and-angiogenesis-in-cardiac-fibroblasts-by-promoting-the-mesenchymal-endothelial-transition-and-reducing-high-mobility-group-box-1-protein-b1-expression
#8
Xiao Ke, Dahao Yang, Jiawen Liang, Xing Wang, Shaoyun Wu, Xiaoqing Wang, Chengheng Hu
Myocardial fibrosis is a characteristic feature of cardiomyopathies. However, no effective strategies to attenuate cardiac fibrosis are currently available. Late-stage endothelial progenitor cells (EPCs) are precursors of endothelial cells (ECs) that repair the heart through a paracrine mechanism. In the present study, we tested whether EPC-derived exosomes regulate the differentiation of fibroblasts into ECs. We isolated late-stage EPCs from human peripheral blood (PB) and used immunofluorescence and flow cytometry to confirm their identity...
September 18, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28920418/myogenic-satellite-cells-differentiation-with-linolenic-and-retinoic-and-thiazolidenediones-from-prepubertal-korean-black-goat
#9
Sugathan Subi, Sungjin Lee, Supriya Shiwani, Naresh Kumar Singh
Objective: Myogenic satellite cells were isolated from semitendinosus muscle of prepubertal Korean black goat to observe the differential effect of linolenic and retinoic acid in thepresence of thiazolidinediones and also to observe the production insulin sensitive preadipocyte. Methods: Cells were characterized for its stemness with CD 34, CD 13, CD 106, CD44, Vimentin surface markers using flow cytometry. Cells characterized themselves to possess significant (p<0...
September 18, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28919162/mir-101-1-expression-pattern-in-qinchuan-cattle-and-its-role-in-the-regulation-of-cell-differentiation
#10
Jiyao Wu, Dandan He, Binglin Yue, Chunlei Zhang, Xingtang Fang, Hong Chen
MiRNAs have emerged as key regulators of skeletal muscle development, but the knowledge of miRNAs in the molecular network of muscle development remains poorly understood. In this study, we designed to examine the biological function of bovine-miR-101-1. The bovine miR-101-1 was detected in the skeletal muscle of fetal, calf and adult cattle. Its abundance was significantly higher in the skeletal muscle of calf cattle than that in fetal and adult cattle. In the course of C2C12 myoblast differentiation, the expression of miR-101-1 gradually increased...
September 14, 2017: Gene
https://www.readbyqxmd.com/read/28918783/-treatment-of-patellofemoral-pain-includes-more-than-knee-rehabiliation
#11
Michael Skovdal Rathleff, Negar Pourbordbari, Martin Bach Jensen, Jens Lykkegaard Olesen
Patellofemoral pain is a debilitating condition which affects one in 14 adolescents and a similar number of adults. It is characterized by peri- or retropatellar pain during loaded bending of the knee. The purpose of this review is to provide a short, up-to-date review of the diagnostics, differential diagnostics and evidence-based treatment for both adolescents and adults with patellofemoral pain. The key message is that treatments of patellofemoral pain should include a combination of patient education to support self-management and exercises to strengthen the hip and knee muscles...
September 18, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28918507/the-muscle-regulatory-transcription-factor-myod-participates-with-p53-to-directly-increase-the-expression-of-the-pro-apoptotic-bcl2-family-member-puma
#12
Terri J Harford, Greg Kliment, Girish C Shukla, Crystal M Weyman
The muscle regulatory transcription factor MyoD is a master regulator of skeletal myoblast differentiation. We have previously reported that MyoD is also necessary for the elevated expression of the pro-apoptotic Bcl2 family member PUMA, and the ensuing apoptosis, that occurs in a subset of myoblasts induced to differentiate. Herein, we report the identification of a functional MyoD binding site within the extended PUMA promoter. In silico analysis of the murine PUMA extended promoter revealed three potential MyoD binding sites within 2 kb of the transcription start site...
September 16, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28918066/enzymatic-testing-sensitivity-variability-and-practical-diagnostic-algorithm-for-pyruvate-dehydrogenase-complex-pdc-deficiency
#13
Ha Kyung Shin, George Grahame, Shawn E McCandless, Douglas S Kerr, Jirair K Bedoyan
Pyruvate dehydrogenase complex (PDC) deficiency is a major cause of primary lactic acidemia in children. Prompt and correct diagnosis of PDC deficiency and differentiating between specific vs generalized, or secondary deficiencies has important implications for clinical management and therapeutic interventions. Both genetic and enzymatic testing approaches are being used in the diagnosis of PDC deficiency. However, the diagnostic efficacy of such testing approaches for individuals affected with PDC deficiency has not been systematically investigated in this disorder...
September 8, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28917653/human-il6-stimulates-bovine-satellite-cell-proliferation-through-a-signal-transducer-and-activator-of-transcription-3-stat3-dependent-mechanism
#14
A M Brandt, J M Kania, B M Reinholt, S E Johnson
Bovine satellite cell (bSC) myogenesis and skeletal muscle hypertrophy occur through the orchestrated actions of multiple autocrine and paracrine growth factors. Intimate to the bSC niche is IL6, a dual-purpose cytokine with proinflammatory and mitogenic properties. The objective of the experiment was to examine the effects of IL6 on proliferation and differentiation of bSC in vitro. Treatment of primary bSC cultures with recombinant bovine IL6 (bIL6) failed to alter myogenesis owing to the absence of intracellular signal transduction...
August 31, 2017: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/28917637/diversity-of-copy-number-variation-in-a-worldwide-population-of-sheep
#15
Liu Yang, Lingyang Xu, Yang Zhou, Mei Liu, Lei Wang, James W Kijas, Hongping Zhang, Li Li, George E Liu
Copy number variation (CNV) represents a major source of genomic variation. We investigated the diversity of CNV distribution using SNP array data collected from a comprehensive collection of geographically dispersed sheep breeds. We identified 24,558 putative CNVs, which can be merged into 619 CNV regions, spanning 197Mb of total length and corresponding to ~6.9% of the sheep genome. Our results reveal a population differentiation in CNV between different geographical areas, including Africa, America, Asia, Southwestern Asia, Central Europe, Northern Europe and Southwestern Europe...
September 13, 2017: Genomics
https://www.readbyqxmd.com/read/28917017/physiological-ripples-%C3%A2-%C3%A2-100%C3%A2-hz-in-spike-free-scalp-eegs-of-children-with-and-without-epilepsy
#16
Anne H Mooij, Renee C M A Raijmann, Floor E Jansen, Kees P J Braun, Maeike Zijlmans
Pathological high frequency oscillations (HFOs, >80 Hz) are considered new biomarkers for epilepsy. They have mostly been recorded invasively, but pathological ripples (80-250 Hz) can also be found in scalp EEGs with frequent epileptiform spikes. Physiological HFOs also exist. They have been recorded invasively in hippocampus and neocortex. There are no reports of spontaneously occurring physiological HFOs recorded with scalp EEG. We aimed to study ripples in spike-free scalp EEGs. We included 23 children (6 with, 17 without epilepsy) who had an EEG without interictal epileptiform spikes recorded during sleep...
September 15, 2017: Brain Topography
https://www.readbyqxmd.com/read/28916862/monitoring-the-response-of-urothelial-precancerous-lesions-to-bacillus-calmette-guerin-at-the-proteome-level-in-an-in-vivo-rat-model
#17
Kerem Teke, Nil Guzel, Ali Kemal Uslubas, Murat Kasap, Hasan Yilmaz, Gurler Akpinar, Demir Kursat Yildiz, Ozdal Dillioglugil
Intravesical Bacillus Calmette-Guerin (BCG) is the best treatment modality for progression of non-muscle invasive bladder cancer. We aimed to monitor changes at the proteome level to identify putative protein biomarkers associated with the response of urothelial precancerous lesions to intravesical BCG treatment. The rats were divided into three groups (n = 10/group): control, non-treated, and BCG-treated groups. The non-treated and BCG-treated groups received N-methyl-N-nitrosourea intravesically. BCG Tice-strain was instilled into bladder in BCG-treated group...
September 15, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28916122/myasthenia-gravis-and-crisis-evaluation-and-management-in-the-emergency-department
#18
Jamie Roper, M Emily Fleming, Brit Long, Alex Koyfman
BACKGROUND: Myasthenia gravis (MG) is an uncommon autoimmune disorder affecting the neuromuscular junction and manifesting as muscle weakness. A multitude of stressors can exacerbate MG. When symptoms are exacerbated, muscle weakness can be severe enough to result in respiratory failure, a condition known as myasthenic crisis (MC). OBJECTIVE: This review discusses risk factors, diagnosis, management, and iatrogenic avoidance of MC. DISCUSSION: MC can affect any age, ethnicity, or sex and can be precipitated with any stressor, infection being the most common...
September 12, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28915407/differentiation-and-sarcomere-formation-in-skeletal-myocytes-directly-prepared-from-human-induced-pluripotent-stem-cells-using-a-sphere-based-culture
#19
Saowanee Jiwlawat, Eileen Lynch, Jennifer Glaser, Ivy Smit-Oistad, Jeremy Jeffrey, Jonathan M Van Dyke, Masatoshi Suzuki
Human induced-pluripotent stem cells (iPSCs) are a promising resource for propagation of myogenic progenitors. Our group recently reported a unique protocol for the derivation of myogenic progenitors directly (without genetic modification) from human pluripotent cells using free-floating spherical culture. Here we expand our previous efforts and attempt to determine how differentiation duration, culture surface coatings, and nutrient supplements in the medium influence progenitor differentiation and formation of skeletal myotubes containing sarcomeric structures...
August 1, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28915325/brown-and-beige-adipose-tissues-in-health-and-disease
#20
Liangyou Rui
Brown and beige adipocytes arise from distinct developmental origins. Brown adipose tissue (BAT) develops embryonically from precursors that also give to skeletal muscle. Beige fat develops postnatally and is highly inducible. Beige fat recruitment is mediated by multiple mechanisms, including de novo beige adipogenesis and white-to-brown adipocyte transdifferentiaiton. Beige precursors reside around vasculatures, and proliferate and differentiate into beige adipocytes. PDGFRα+Ebf2+ precursors are restricted to beige lineage cells, while another PDGFRα+ subset gives rise to beige adipocytes, white adipocytes, or fibrogenic cells...
September 12, 2017: Comprehensive Physiology
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