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Muscular Regeneration

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https://www.readbyqxmd.com/read/29662788/skeletal-muscle-regeneration-is-modulated-by-inflammation
#1
REVIEW
Wenjun Yang, Ping Hu
Skeletal muscle regeneration is a complex process orchestrated by multiple steps. Recent findings indicate that inflammatory responses could play central roles in bridging initial muscle injury responses and timely muscle injury reparation. The various types of immune cells and cytokines have crucial roles in muscle regeneration process. In this review, we briefly summarise the functions of acute inflammation in muscle regeneration. The translational potential of this article: Immune system is closely relevant to the muscle regeneration...
April 2018: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29603757/extracellular-matrix-scaffolds-for-treatment-of-large-volume-muscle-injuries-a-review
#2
REVIEW
Tiffany L Sarrafian, Sue C Bodine, Brian Murphy, J Kevin Grayson, Susan M Stover
OBJECTIVE: Large muscular or musculotendinous defects present a dilemma because of the inadequacies of current treatment strategies. Extracellular matrices (ECM) are potential clinically applicable regenerative biomaterials. This review summarizes information from the preclinical literature evaluating the use of ECM for muscle regeneration in animal models of volumetric muscle loss (VML). STUDY DESIGN: Literature review. SAMPLE POPULATION: Animal models of VML in which surgical repair was performed with an ECM product, with or without added cell populations...
March 30, 2018: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/29578051/dexpression-patterns-of-regulatory-rnas-including-lncrnas-and-trnas-during-postnatal-growth-of-normal-and-dystrophic-mdx-mouse-muscles-and-their-response-to-taurine-treatment
#3
Lauren C Butchart, Jessica R Terrill, Giulia Rossetti, Robert White, Aleksandra Filipovska, Miranda D Grounds
Post-natal skeletal muscle growth in mice is very rapid and involves complex changes in many cells types over the first 6 weeks of life. The acute onset of dystropathology also occurs around 3 weeks of age in the mdx mouse model of the human disease Duchenne Muscular Dystrophy (DMD). This study investigated (i) alterations in expression patterns of regulatory non-coding RNAs (ncRNAs) in vivo, including miRNAs, lncRNAs and tRNAs, during early growth of skeletal muscles in normal control C57Bl/10Scsn (C57) compared with dystrophic mdx mice from 2-6 weeks of postnatal age, and revealed inherent differences in vivo for levels of 3 ncRNAs between C57 and mdx muscles before the onset of dystropathology...
March 22, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29573382/human-adipose-derived-and-amniotic-fluid-derived-stem-cells-a-preliminary-in-vitro-study-comparing-myogenic-differentiation-capability
#4
Anna Bajek, Joanna Olkowska, Małgorzata Walentowicz-Sadłecka, Paweł Sadłecki, Marek Grabiec, Dorota Porowińska, Tomasz Drewa, Krzysztof Roszkowski
BACKGROUND Around the world, disabilities due to musculoskeletal disorders have increased and are a major health problem worldwide. In recent years, stem cells have been considered to be powerful tools for musculoskeletal tissue engineering. Human adipose-derived stem cells (hADSCs) and amniotic fluid-derived stem cells (hAFSCs) undergo typical differentiation process into cells of mesodermal origin and can be used to treat muscular system diseases. The aim of the present study was to compare the biological characteristic of stem cells isolated from different human tissues (adipose tissue and amniotic fluid) with respect to myogenic capacity and skeletal and smooth muscle differentiation under the same conditions...
March 24, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29561896/the-dual-ccr2-ccr5-chemokine-receptor-antagonist-cenicriviroc-reduces-macrophage-infiltration-and-disease-severity-in-duchenne-muscular-dystrophy-dmdmdx-4cv-mice
#5
Feng Liang, Christian Giordano, Dong Shang, Qian Li, Basil J Petrof
Duchenne muscular dystrophy (DMD) is characterized by progressive muscle weakness which is ultimately fatal, most often due to involvement of the diaphragm. Macrophage infiltration of dystrophic muscles has been strongly linked to muscle damage and fibrosis in DMD. We hypothesized that cenicriviroc (CVC), a dual chemokine receptor (CCR2/CCR5) antagonist currently under clinical evaluation for other diseases, could prevent macrophage accumulation and blunt disease progression in the diaphragms of mdx mice (genetic homologue of DMD)...
2018: PloS One
https://www.readbyqxmd.com/read/29554127/expression-profiling-of-disease-progression-in-canine-model-of-duchenne-muscular-dystrophy
#6
Candice Brinkmeyer-Langford, Candice Chu, Cynthia Balog-Alvarez, Xue Yu, James J Cai, Mary Nabity, Joe N Kornegay
Duchenne muscular dystrophy (DMD) causes progressive disability in 1 of every 5,000 boys due to the lack of functional dystrophin protein. Despite much advancement in knowledge about DMD disease presentation and progression-attributable in part to studies using mouse and canine models of the disease-current DMD treatments are not equally effective in all patients. There remains, therefore, a need for translational animal models in which novel treatment targets can be identified and evaluated. Golden Retriever muscular dystrophy (GRMD) is a phenotypically and genetically homologous animal model of DMD...
2018: PloS One
https://www.readbyqxmd.com/read/29536564/clinical-relevance-of-terminal-schwann-cells-an-overlooked-component-of-the-neuromuscular-junction
#7
Katherine B Santosa, Alexandra M Keane, Albina Jablonka-Shariff, Bianca Vannucci, Alison K Snyder-Warwick
The terminal Schwann cell (tSC), a type of nonmyelinating Schwann cell, is a significant yet relatively understudied component of the neuromuscular junction. In addition to reviewing the role tSCs play on formation, maintenance, and remodeling of the synapse, we review studies that implicate tSCs in neuromuscular diseases including spinal muscular atrophy, Miller-Fisher syndrome, and amyotrophic lateral sclerosis, among others. We also discuss the importance of these cells on degeneration and regeneration after nerve injury...
March 13, 2018: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/29536116/muscle-stem-progenitor-cells-and-mesenchymal-stem-cells-of-bone-marrow-origin-for-skeletal-muscle-regeneration-in-muscular-dystrophies
#8
REVIEW
Aleksandra Klimczak, Urszula Kozlowska, Maciej Kurpisz
Muscular dystrophies represent a group of diseases which may develop in several forms, and severity of the disease is usually associated with gene mutations. In skeletal muscle regeneration and in muscular dystrophies, both innate and adaptive immune responses are involved. The regenerative potential of mesenchymal stem/stromal cells (MSCs) of bone marrow origin was confirmed by the ability to differentiate into diverse tissues and by their immunomodulatory and anti-inflammatory properties by secretion of a variety of growth factors and anti-inflammatory cytokines...
March 13, 2018: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/29504090/some-peculiarities-of-local-distribution-of-multipotent-mesenchymal-stromal-cells-after-their-injection-into-intact-muscle-tissue-in-experiment
#9
I V Maiborodin, V V Morozov, A A Anikeev, R V Maslov, N F Figurenko, V A Matveeva, V I Maiborodina
Changes in the muscular tissue after subcutaneous injection of autologous bone marrow multipotent mesenchymal stromal cells transfected with GFP gene and additionally stained with cell membrane dye Vybrant CM-Dil in the projection of ligated femoral vein were studied by light microscopy with luminescence. Stromal cells injected through the skin can appear not only in the damaged tissue where acceleration of regeneration processes is required, but also in intact structures located in superficial or deeper layers...
March 4, 2018: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29503200/autologous-cell-therapy-approach-for-duchenne-muscular-dystrophy-using-piggybac-transposons-and-mesoangioblasts
#10
Pavithra S Iyer, Lionel O Mavoungou, Flavio Ronzoni, Joanna Zemla, Emanuel Schmid-Siegert, Stefania Antonini, Laurence A Neff, Olivier M Dorchies, Marisa Jaconi, Malgorzata Lekka, Graziella Messina, Nicolas Mermod
Duchenne muscular dystrophy (DMD) is a lethal muscle-wasting disease currently without cure. We investigated the use of the PiggyBac transposon for full-length dystrophin expression in murine mesoangioblast (MABs) progenitor cells. DMD murine MABs were transfected with transposable expression vectors for full-length dystrophin and transplanted intramuscularly or intra-arterially into mdx/SCID mice. Intra-arterial delivery indicated that the MABs could migrate to regenerating muscles to mediate dystrophin expression...
February 2, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29484837/elevated-glut4-and-glycogenin-protein-abundance-correspond-to-increased-glycogen-content-in-the-soleus-muscle-of-mdx-mice-with-no-benefit-associated-with-taurine-supplementation
#11
Robert G Barker, Barnaby P Frankish, Hongyang Xu, Robyn M Murphy
Duchenne muscular dystrophy (DMD) patients and the dystrophic mdx mouse have an elevated demand for ATP requiring processes, including Ca2+ regulation and skeletal muscle regeneration. As a key substrate for cellular ATP production, altered glycogen metabolism may contribute significantly to dystrophic pathology and explain reports of mild glucose intolerance. We compare the soleus and extensor digitorum longus (EDL) muscles of the mdx mouse during active muscle necrosis (at 28 days) and at 70 days where pathology is stable...
March 2018: Physiological Reports
https://www.readbyqxmd.com/read/29481844/biglycan-and-ltbp4-leveraging-the-extracellular-matrix-for-duchenne-muscular-dystrophy-therapeutics
#12
REVIEW
Justin R Fallon, Elizabeth M McNally
The extracellular matrix (ECM) plays key roles in normal and diseased skeletal and cardiac muscle. In healthy muscle the ECM is essential for transmitting contractile force, maintaining myofiber integrity and orchestrating cellular signaling. Duchenne Muscular Dystrophy (DMD) is caused by loss of dystrophin, a cytosolic protein that anchors a transmembrane complex and serves as a vital link between the actin cytoskeleton and the basal lamina. Loss of dystrophin leads to membrane fragility and impaired signaling, resulting in myofiber death and cycles of inflammation and regeneration...
February 23, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29480633/the-distinctive-jaw-and-alveolar-bone-regeneration
#13
S O Akintoye
The skeletal system is structurally and functionally unique. It can be referred to as connective tissue that lost its ability to resist mineralization as mineralization in any other connective tissues is heterotopic. In addition to providing support for muscular attachments, the skeletal system protects nerves and harbors the hematopoietic and mesenchymal stem cells within the bone marrow compartment. However, there are distinct phenotypic and functional differences between the orofacial skeleton compared to axial and appendicular skeleton...
March 2018: Oral Diseases
https://www.readbyqxmd.com/read/29475516/exposure-to-microgravity-for-30-days-onboard-bion-m1-caused-muscle-atrophy-and-impaired-regeneration-in-murine-femoral-quadriceps
#14
E A Radugina, E A C Almeida, E Blaber, V A Poplinskaya, Y V Markitantova, E N Grigoryan
Mechanical unloading in microgravity during spaceflight is known to cause muscular atrophy, changes in muscle fiber composition, gene expression, and reduction in regenerative muscle growth. Although some limited data exists for long-term effects of microgravity in human muscle, these processes have mostly been studied in rodents for short periods of time. Here we report on how long-term (30-day long) mechanical unloading in microgravity affects murine muscles of the femoral Quadriceps group. To conduct these studies we used muscle tissue from 6 microgravity mice, in comparison to habitat (7), and vivarium (14) ground control mice from the NASA Biospecimen Sharing Program conducted in collaboration with the Institute for Biomedical Problems of the Russian Academy of Sciences, during the Russian Bion M1 biosatellite mission in 2013...
February 2018: Life Sciences in Space Research
https://www.readbyqxmd.com/read/29462608/mrnp-assembly-axonal-transport-and-local-translation-in-neurodegenerative-diseases
#15
Bilal Khalil, Dmytro Morderer, Phillip L Price, Feilin Liu, Wilfried Rossoll
The development, maturation, and maintenance of the mammalian nervous system rely on complex spatiotemporal patterns of gene expression. In neurons, this is achieved by the expression of differentially localized isoforms and specific sets of mRNA-binding proteins (mRBPs) that regulate RNA processing, mRNA trafficking, and local protein synthesis at remote sites within dendrites and axons. There is growing evidence that axons contain a specialized transcriptome and are endowed with the machinery that allows them to rapidly alter their local proteome via local translation and protein degradation...
February 17, 2018: Brain Research
https://www.readbyqxmd.com/read/29459044/decellularized-human-fetal-intestine-as-a-bioscaffold-for-regeneration-of-the-rabbit-bladder-submucosa
#16
Abdol-Mohammad Kajbafzadeh, Reza Khorramirouz, Ahmad Masoumi, Sorena Keihani, Behnam Nabavizadeh
PURPOSE: We aim to report a method to create a natural acellular scaffold from human fetal small intestine for augmentation cystoplasty in rabbits. METHODS: Fetal intestines were decellularized by immersion in a hypotonic solution. The success of this protocol was evaluated by histological analysis, scanning electron microscopy and measurement of collagen and sulfated glycosaminoglycan of the acellular tissues. Eight mature rabbits were selected and acellular scaffolds were implanted on the exposed urothelium...
February 1, 2018: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29458172/modelling-human-myoblasts-survival-upon-xenotransplantation-into-immunodeficient-mouse-muscle
#17
Christophe Praud, Karine Vauchez, Pascal Zongo, Jean-Thomas Vilquin
Cell transplantation has been challenged in several clinical indications of genetic or acquired muscular diseases, but therapeutic success were mitigated. To understand and improve the yields of tissue regeneration, we aimed at modelling the fate of CD56-positive human myoblasts after transplantation. Using immunodeficient severe combined immunodeficiency (SCID) mice as recipients, we assessed the survival, integration and satellite cell niche occupancy of human myoblasts by a triple immunohistochemical labelling of laminin, dystrophin and human lamin A/C...
February 16, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29408413/regulation-of-fibrosis-in-muscular-dystrophy
#18
REVIEW
Lucas R Smith, Elisabeth R Barton
The production of force and power are inherent properties of skeletal muscle, and regulated by contractile proteins within muscle fibers. However, skeletal muscle integrity and function also require strong connections between muscle fibers and their extracellular matrix (ECM). A well-organized and pliant ECM is integral to muscle function and the ability for many different cell populations to efficiently migrate through ECM is critical during growth and regeneration. For many neuromuscular diseases, genetic mutations cause disruption of these cytoskeletal-ECM connections, resulting in muscle fragility and chronic injury...
February 2, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29400678/a-comparative-study-of-rehabilitation-therapy-in-traumatic-upper-limb-peripheral-nerve-injuries
#19
Cristian Milicin, Elena Sîrbu
INTRODUCTION: Lower motor neurons are the only neurons of the central nervous system (CNS) with the ability to regenerate without any intervention after an axotomy. AIM: This present study was conducted to analyze clinical and electrophysiological parameters in four groups of upper limb peripheral neuropathies, before and after treatment, comparing the results obtained after three cures of complex rehabilitation therapy. MATERIALS AND METHODS: We selected a number of 107 patients (66 women and 41 men) aged between 29 and 77 years (mean age = 49...
2018: NeuroRehabilitation
https://www.readbyqxmd.com/read/29399383/epigenetic-regulators-modulate-muscle-damage-in-duchenne-muscular-dystrophy-model
#20
Fernanda Bajanca, Laurence Vandel
Histone acetyl transferases (HATs) and histone deacetylases (HDAC) control transcription during myogenesis. HDACs promote chromatin condensation, inhibiting gene transcription in muscle progenitor cells until myoblast differentiation is triggered and HDACs are released. HATs, namely CBP/p300, activate myogenic regulatory and elongation factors promoting myogenesis. HDAC inhibitors are known to improve regeneration in dystrophic muscles through follistatin upregulation. However, the potential of directly modulating HATs remains unexplored...
December 21, 2017: PLoS Currents
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