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muscular protein synthesis

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https://www.readbyqxmd.com/read/28333970/-epicatechin-3-o-%C3%AE-d-allopyranoside-from-davallia-formosana-prevents-diabetes-and-dyslipidemia-in-streptozotocin-induced-diabetic-mice
#1
Cheng-Hsiu Lin, Jin-Bin Wu, Jia-Ying Jian, Chun-Ching Shih
The objective of this study was to evaluate the effects and molecular mechanism of (-)-epicatechin-3-O-β-D-allopyranoside from Davallia formosana (BB) (also known as Gu-Sui-Bu) on type 1 diabetes mellitus and dyslipidemia in streptozotocin (STZ)-induced diabetic mice. This plant was demonstrated to display antioxidant activities and possess polyphenol contents. Diabetic mice were randomly divided into six groups and were given daily oral gavage doses of either BB (at three dosage levels), metformin (Metf) (at 0...
2017: PloS One
https://www.readbyqxmd.com/read/28328712/resistance-training-induced-elevations-in-muscular-strength-in-trained-men-are-maintained-after-2-weeks-of-detraining-and-not-differentially-affected-by-whey-protein-supplementation
#2
Paul S Hwang, Thomas L Andre, Sarah K McKinley-Barnard, Flor E Morales Marroquín, Joshua J Gann, Joon J Song, Darryn S Willoughby
Hwang, PS, Andre, TL, McKinley-Barnard, SK, Morales Marroquín, FE, Gann, JJ, Song, JJ, and Willoughby, DS. Resistance training-induced elevations in muscular strength in trained men are maintained after 2 weeks of detraining and not differentially affected by whey protein supplementation. J Strength Cond Res 31(4): 869-881, 2017-Resistance training (RT) with nutritional strategies incorporating whey protein intake postexercise can stimulate muscle protein synthesis and elicit hypertrophy. The early phases of training-induced anabolic responses can be attenuated with longer-term training...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28274276/treatment-with-l-citrulline-in-patients-with-post-polio-syndrome-study-protocol-for-a-single-center-randomised-placebo-controlled-double-blind-trial
#3
Simone Schmidt, Vanya Gocheva, Thomas Zumbrunn, Daniela Rubino-Nacht, Ulrike Bonati, Dirk Fischer, Patricia Hafner
BACKGROUND: Post-polio syndrome (PPS) is a condition that affects polio survivors years after recovery from an initial acute infection by the Poliomyelitis virus. Most often, patients who suffered from polio start to experience gradual new weakening in muscles, a gradual decrease in the size of muscles (muscle atrophy) and fatigue years after the acute illness. L-citrulline is known to change muscular metabolism synthesis by raising nitric oxide (NO) levels and increasing protein synthesis...
March 9, 2017: Trials
https://www.readbyqxmd.com/read/28251761/3d-structural-analysis-of-protein-o-mannosyl-kinase-pomk-a-causative-gene-product-of-dystroglycanopathy
#4
Masamichi Nagae, Sushil K Mishra, Makiko Neyazaki, Rika Oi, Akemi Ikeda, Naohiro Matsugaki, Satoko Akashi, Hiroshi Manya, Mamoru Mizuno, Hirokazu Yagi, Koichi Kato, Toshiya Senda, Tamao Endo, Terukazu Nogi, Yoshiki Yamaguchi
Orchestration of the multiple enzymes engaged in O-mannose glycan synthesis provides a matriglycan on α-dystroglycan (α-DG) which attracts extracellular matrix (ECM) proteins such as laminin. Aberrant O-mannosylation of α-DG leads to severe congenital muscular dystrophies due to detachment of ECM proteins from the basal membrane. Phosphorylation at C6-position of O-mannose catalyzed by protein O-mannosyl kinase (POMK) is a crucial step in the biosynthetic pathway of O-mannose glycan. Several mis-sense mutations of the POMK catalytic domain are known to cause a severe congenital muscular dystrophy, Walker-Warburg syndrome...
March 2, 2017: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/28127425/novel-metabolic-and-physiological-functions-of-branched-chain-amino-acids-a-review
#5
REVIEW
Shihai Zhang, Xiangfang Zeng, Man Ren, Xiangbing Mao, Shiyan Qiao
It is widely known that branched chain amino acids (BCAA) are not only elementary components for building muscle tissue but also participate in increasing protein synthesis in animals and humans. BCAA (isoleucine, leucine and valine) regulate many key signaling pathways, the most classic of which is the activation of the mTOR signaling pathway. This signaling pathway connects many diverse physiological and metabolic roles. Recent years have witnessed many striking developments in determining the novel functions of BCAA including: (1) Insufficient or excessive levels of BCAA in the diet enhances lipolysis...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28115638/secis-binding-protein-2-interacts-with-the-smn-complex-and-the-methylosome-for-selenoprotein-mrnp-assembly-and-translation
#6
Anne-Sophie Gribling-Burrer, Michael Leichter, Laurence Wurth, Alexandra Huttin, Florence Schlotter, Nathalie Troffer-Charlier, Vincent Cura, Martine Barkats, Jean Cavarelli, Séverine Massenet, Christine Allmang
Selenoprotein synthesis requires the co-translational recoding of a UGASec codon. This process involves an RNA structural element, called Selenocysteine Insertion Sequence (SECIS) and the SECIS binding protein 2 (SBP2). Several selenoprotein mRNAs undergo unusual cap hypermethylation by the trimethylguanosine synthase 1 (Tgs1), which is recruited by the ubiquitous Survival of MotoNeurons (SMN) protein. SMN, the protein involved in spinal muscular atrophy, is part of a chaperone complex that collaborates with the methylosome for RNP assembly...
January 23, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28095296/diverse-role-of-survival-motor-neuron-protein
#7
REVIEW
Ravindra N Singh, Matthew D Howell, Eric W Ottesen, Natalia N Singh
The multifunctional Survival Motor Neuron (SMN) protein is required for the survival of all organisms of the animal kingdom. SMN impacts various aspects of RNA metabolism through the formation and/or interaction with ribonucleoprotein (RNP) complexes. SMN regulates biogenesis of small nuclear RNPs, small nucleolar RNPs, small Cajal body-associated RNPs, signal recognition particles and telomerase. SMN also plays an important role in DNA repair, transcription, pre-mRNA splicing, histone mRNA processing, translation, selenoprotein synthesis, macromolecular trafficking, stress granule formation, cell signaling and cytoskeleton maintenance...
March 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28017945/-pathological-state-or-cause-of-sarcopenia
#8
Yasumoto Matsui
Skeletal muscle atrophy by aging(Sarcopenia)is more likely to occur in lower limbs rather than upper ones, and in the thigh rather than in the lower leg, and in the anterior side of thigh rather than posterior, faster in men than in women. It differs from disuse muscle atrophy in that it occurs slowly and gradually, hard to be recovered, or fast twitch fibers are mainly involved. Many factors or phenomena are known to contribute to proceed sarcopenia. In the aged skeletal muscle tissue, the number of satellite cells or motor neurons decrease and the function of the neuro-muscular junction declines...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/27993175/carbohydrate-intake-and-resistance-based-exercise-are-current-recommendations-reflective-of-actual-need
#9
Kurt A Escobar, Trisha A VanDusseldorp, Chad M Kerksick
Substantial research has been completed examining the impact of carbohydrate (CHO) intake on endurance exercise, whereas its role in resistance-based exercise performance, adaptation and cell signalling has yet to be fully characterised. This empirical shortcoming has precluded the ability to establish specific CHO recommendations for resistance exercise. This results in recommendations largely stemming from findings based on endurance exercise and/or anecdotal evidence despite the distinct energetic demands and molecular responses mediating adaptation from endurance- and resistance-based exercise...
December 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/27940419/novel-clk1-inhibitors-based-on-n-aryloxazol-2-amine-skeleton-a-possible-way-to-dual-vegfr2-tk-clk-ligands
#10
Miroslav Murár, Juraj Dobiaš, Peter Šramel, Gabriela Addová, Gilles Hanquet, Andrej Boháč
BACKGROUND: Inhibitors of CLK protein kinases suppress cell growth and induce apoptosis by modulating pre-mRNA splicing in cancer. CLK family kinases are also involved in alternative splicing and RNA processing in Duchenne muscular dystrophy, Alzheimer's disease, HIV-1, and influenza virus. Small inhibitors are valuable tools for better understanding the molecular mechanisms of splicing and may serve as seeds for a novel class of therapeutics. ACHIEVEMENTS: Here we describe a discovery of four novel CLK1 inhibitors possessing N-aryloxazol-2-amine skeleton...
January 27, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27874066/cl316-243-a-%C3%AE-3-adrenergic-receptor-agonist-induces-muscle-hypertrophy-and-increased-strength
#11
Daniela Puzzo, Roberto Raiteri, Clotilde Castaldo, Raffaele Capasso, Ester Pagano, Mariateresa Tedesco, Walter Gulisano, Lisaveta Drozd, Pellegrino Lippiello, Agostino Palmeri, Pietro Scotto, Maria Concetta Miniaci
Studies in vitro have demonstrated that β3-adrenergic receptors (β3-ARs) regulate protein metabolism in skeletal muscle by promoting protein synthesis and inhibiting protein degradation. In this study, we evaluated whether activation of β3-ARs by the selective agonist CL316,243 modifies the functional and structural properties of skeletal muscles of healthy mice. Daily injections of CL316,243 for 15 days resulted in a significant improvement in muscle force production, assessed by grip strength and weight tests, and an increased myofiber cross-sectional area, indicative of muscle hypertrophy...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27866827/nucleoprotein-supplementation-enhances-the-recovery-of-rat-soleus-mass-with-reloading-after-hindlimb-unloading-induced-atrophy-via-myonuclei-accretion-and-increased-protein-synthesis
#12
Ryosuke Nakanishi, Yusuke Hirayama, Minoru Tanaka, Noriaki Maeshige, Hiroyo Kondo, Akihiko Ishihara, Roland R Roy, Hidemi Fujino
Hindlimb unloading results in muscle atrophy and a period of reloading has been shown to partially recover the lost muscle mass. Two of the mechanisms involved in this recovery of muscle mass are the activation of protein synthesis pathways and an increase in myonuclei number. The additional myonuclei are provided by satellite cells that are activated by the mechanical stress associated with the reloading of the muscles and eventually incorporated into the muscle fibers. Amino acid supplementation with exercise also can increase skeletal muscle mass through enhancement of protein synthesis and nucleotide supplements can promote cell cycle activity...
December 2016: Nutrition Research
https://www.readbyqxmd.com/read/27845387/adenoviral-vectors-encoding-crispr-cas9-multiplexes-rescue-dystrophin-synthesis-in-unselected-populations-of-dmd-muscle-cells
#13
Ignazio Maggio, Jin Liu, Josephine M Janssen, Xiaoyu Chen, Manuel A F V Gonçalves
Mutations disrupting the reading frame of the ~2.4 Mb dystrophin-encoding DMD gene cause a fatal X-linked muscle-wasting disorder called Duchenne muscular dystrophy (DMD). Genome editing based on paired RNA-guided nucleases (RGNs) from CRISPR/Cas9 systems has been proposed for permanently repairing faulty DMD loci. However, such multiplexing strategies require the development and testing of delivery systems capable of introducing the various gene editing tools into target cells. Here, we investigated the suitability of adenoviral vectors (AdVs) for multiplexed DMD editing by packaging in single vector particles expression units encoding the Streptococcus pyogenes Cas9 nuclease and sequence-specific gRNA pairs...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27832095/increased-muscular-5%C3%AE-dihydrotestosterone-in-response-to-resistance-training-relates-to-skeletal-muscle-mass-and-glucose-metabolism-in-type-2-diabetic-rats
#14
Naoki Horii, Koji Sato, Noboru Mesaki, Motoyuki Iemitsu
Regular resistance exercise induces skeletal muscle hypertrophy and improvement of glycemic control in type 2 diabetes patients. Administration of dehydroepiandrosterone (DHEA), a sex steroid hormone precursor, increases 5α-dihydrotestosterone (DHT) synthesis and is associated with improvements in fasting blood glucose level and skeletal muscle hypertrophy. Therefore, the aim of this study was to investigate whether increase in muscle DHT levels, induced by chronic resistance exercise, can contribute to skeletal muscle hypertrophy and concomitant improvement of muscular glucose metabolism in type 2 diabetic rats...
2016: PloS One
https://www.readbyqxmd.com/read/27798264/nad-repletion-improves-muscle-function-in-muscular-dystrophy-and-counters-global-parylation
#15
Dongryeol Ryu, Hongbo Zhang, Eduardo R Ropelle, Vincenzo Sorrentino, Davi A G Mázala, Laurent Mouchiroud, Philip L Marshall, Matthew D Campbell, Amir Safi Ali, Gary M Knowels, Stéphanie Bellemin, Shama R Iyer, Xu Wang, Karim Gariani, Anthony A Sauve, Carles Cantó, Kevin E Conley, Ludivine Walter, Richard M Lovering, Eva R Chin, Bernard J Jasmin, David J Marcinek, Keir J Menzies, Johan Auwerx
Neuromuscular diseases are often caused by inherited mutations that lead to progressive skeletal muscle weakness and degeneration. In diverse populations of normal healthy mice, we observed correlations between the abundance of mRNA transcripts related to mitochondrial biogenesis, the dystrophin-sarcoglycan complex, and nicotinamide adenine dinucleotide (NAD(+)) synthesis, consistent with a potential role for the essential cofactor NAD(+) in protecting muscle from metabolic and structural degeneration. Furthermore, the skeletal muscle transcriptomes of patients with Duchene's muscular dystrophy (DMD) and other muscle diseases were enriched for various poly[adenosine 5'-diphosphate (ADP)-ribose] polymerases (PARPs) and for nicotinamide N-methyltransferase (NNMT), enzymes that are major consumers of NAD(+) and are involved in pleiotropic events, including inflammation...
October 19, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27798095/myeloid-cells-are-capable-of-synthesizing-aldosterone-to-exacerbate-damage-in-muscular-dystrophy
#16
Jessica A Chadwick, Sarah A Swager, Jeovanna Lowe, Steven S Welc, James G Tidball, Celso E Gomez-Sanchez, Elise P Gomez-Sanchez, Jill A Rafael-Fortney
FDA-approved mineralocorticoid receptor (MR) antagonists are used to treat heart failure. We have recently demonstrated efficacy of MR antagonists for skeletal muscles in addition to heart in Duchenne muscular dystrophy mouse models and that mineralocorticoid receptors are present and functional in skeletal muscles. The goal of this study was to elucidate the underlying mechanisms of MR antagonist efficacy on dystrophic skeletal muscles. We demonstrate for the first time that infiltrating myeloid cells clustered in damaged areas of dystrophic skeletal muscles have the capacity to produce the natural ligand of MR, aldosterone, which in excess is known to exacerbate tissue damage...
October 23, 2016: Human Molecular Genetics
https://www.readbyqxmd.com/read/27742803/skeletal-muscle-and-resistance-exercise-training-the-role-of-protein-synthesis-in-recovery-and-remodelling
#17
Chris McGlory, Michaela C Devries, Stuart M Phillips
Exercise results in the rapid remodelling of skeletal muscle imparting a positive impact on human health. This process is underpinned by acute and chronic changes in both gene and protein synthesis. In this short review we provide a brief summary of our current understanding regarding how exercise influences these processes as well as the subsequent impact on muscle protein turnover and resultant shift in muscle phenotype. We explore concepts of ribosomal biogenesis and the potential role of increased translational capacity versus translational efficiency in contributing to muscular hypertrophy...
October 14, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27733450/new-function-of-the-myostatin-activin-type-i-receptor-alk4-as-a-mediator-of-muscle-atrophy-and-muscle-regeneration
#18
Svitlana Pasteuning-Vuhman, Johanna W Boertje-van der Meulen, Maaike van Putten, Maurice Overzier, Peter Ten Dijke, Szymon M Kiełbasa, Wibowo Arindrarto, Ron Wolterbeek, Ksenia V Lezhnina, Ivan V Ozerov, Aleksandr M Aliper, Willem M Hoogaars, Annemieke Aartsma-Rus, Cindy J M Loomans
Skeletal muscle fibrosis and impaired muscle regeneration are major contributors to muscle wasting in Duchenne muscular dystrophy (DMD). Muscle growth is negatively regulated by myostatin (MSTN) and activins. Blockage of these pathways may improve muscle quality and function in DMD. Antisense oligonucleotides (AONs) were designed specifically to block the function of ALK4, a key receptor for the MSTN/activin pathway in skeletal muscle. AON-induced exon skipping resulted in specific Alk4 down-regulation, inhibition of MSTN activity, and increased myoblast differentiation in vitro Unexpectedly, a marked decrease in muscle mass (10%) was found after Alk4 AON treatment in mdx mice...
January 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/27665016/effect-of-white-striping-myopathy-on-breast-muscle-pectoralis-major-protein-turnover-and-gene-expression-in-broilers
#19
Karen Vignale, Justina V Caldas, Judy A England, Nirun Boonsinchai, Andrew Magnuson, Erik D Pollock, Sami Dridi, Casey M Owens, Craig N Coon
A study was conducted to evaluate the effect of white striping ( WS: ) of broiler breast muscle (Pectoralis major) on protein turnover and gene expression of genes related to protein degradation and fatty acid synthesis. A total of 560 day-old male broiler chicks Cobb 500 were allocated in a total of 16 pens, 35 chicks per pen. A completely randomized design was conducted with a 2 × 3 factorial arrangement (2 scores: severe and normal, and 3 breast meat samples sites). At d 60, 20 birds were randomly selected, euthanized, and scored for white striping...
September 24, 2016: Poultry Science
https://www.readbyqxmd.com/read/27631878/mitochondrial-chchd-containing-proteins-physiologic-functions-and-link-with-neurodegenerative-diseases
#20
Zhi-Dong Zhou, Wuan-Ting Saw, Eng-King Tan
The coiled-coil-helix-coiled-coil-helix domain (CHCHD)-containing proteins are evolutionarily conserved nucleus-encoded small mitochondrial proteins with important functions. So far, nine members have been identified in this protein family. All CHCHD proteins have at least one functional coiled-coil-helix-coiled-coil-helix (CHCH) domain, which is stabilized by two pairs of disulfide bonds between two helices. CHCHD proteins have various important pathophysiological roles in mitochondria and other key cellular processes...
September 8, 2016: Molecular Neurobiology
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