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https://www.readbyqxmd.com/read/28339962/fstl3-is-increased-in-renal-dysfunction
#1
Susan Kralisch, Annett Hoffmann, Nora Klöting, Anette Bachmann, Jürgen Kratzsch, Jens-Uwe Stolzenburg, Anja Dietel, Joachim Beige, Matthias Anders, Ingolf Bast, Matthias Blüher, Ming-Zhi Zhang, Raymond C Harris, Michael Stumvoll, Mathias Fasshauer, Thomas Ebert
Background.: Follistatin-like 3 (FSTL3) is a novel cytokine that regulates insulin sensitivity and counteracts activin/myostatin signalling. In the present study, regulation of FSTL3 in renal dysfunction was investigated in both human chronic kidney disease (CKD) and acute kidney dysfunction (AKD). Furthermore, mFSTL3 expression was analysed in insulin-sensitive tissues in a mouse model of CKD. Methods.: Circulating FSTL3 was quantified by enzyme-linked immunosorbent assay in 581 patients with CKD covering the whole spectrum of estimated glomerular filtration rate (eGFR) categories from G1 to G5...
March 3, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28338991/mir-30e-is-negatively-regulated-by-myostatin-in-skeletal-muscle-and-is-functionally-related-to-fiber-type-composition
#2
Haixue Jia, Yixia Zhao, Tingting Li, Yong Zhang, Dahai Zhu
Myostatin (MSTN) negatively regulates skeletal myogenesis in which microRNAs (miRNAs) also play critical roles. Using miRNA microarrays of skeletal muscle from MSTN-knockout (MSTN-/-) mice, we recently showed that miR-431 is regulated by MSTN signaling. To identify additional miRNAs regulated by MSTN, we re-analyzed these miRNA arrays and validated their expression by quantitative RT-PCR. Herein, we demonstrated that miR-30e was significantly upregulated in skeletal muscle of MSTN-/- mice compared with that of the wild-type littermates...
March 17, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28329753/benefits-of-high-intensity-exercise-training-to-patients-with-chronic-obstructive-pulmonary-disease-a-controlled-study
#3
Tobias Boeselt, Christoph Nell, Lea Lütteken, Katharina Kehr, Janine Koepke, Sandra Apelt, Martina Veith, Björn Beutel, Marc Spielmanns, Timm Greulich, Claus F Vogelmeier, Klaus Kenn, Sabina Janciauskiene, Peter Alter, A Rembert Koczulla
BACKGROUND: Various exercise training programs are used for patients with chronic obstructive pulmonary disease (COPD) of different severity. OBJECTIVES: To investigate the impact of individualized high-intensity training on exercise capacity with COPD. METHODS: A total of 49 patients agreed to participate. Of these, 31 were assigned to the training group and 18 served as controls. The training group exercised twice a week for 90 min with consecutively increasing loads...
March 23, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28325281/systemic-antisense-therapeutics-for-dystrophin-and-myostatin-exon-splice-modulation-improve-muscle-pathology-of-adult-mdx-mice
#4
Ngoc Lu-Nguyen, Alberto Malerba, Linda Popplewell, Fred Schnell, Gunnar Hanson, George Dickson
Antisense-mediated exon skipping is a promising approach for the treatment of Duchenne muscular dystrophy (DMD), a rare life-threatening genetic disease due to dystrophin deficiency. Such an approach can restore the disrupted reading frame of dystrophin pre-mRNA, generating a truncated form of the protein. Alternatively, antisense therapy can be used to induce destructive exon skipping of myostatin pre-mRNA, knocking down myostatin expression to enhance muscle strength and reduce fibrosis. We have reported previously that intramuscular or intraperitoneal antisense administration inducing dual exon skipping of dystrophin and myostatin pre-mRNAs was beneficial in mdx mice, a mouse model of DMD, although therapeutic effects were muscle type restricted, possibly due to the delivery routes used...
March 17, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28322766/characterization-of-a-molt-related-myostatin-gene-fmmstn-from-the-banana-shrimp-fenneropenaeus-merguiensis
#5
Rui Qun Zhuo, Ting Ting Zhou, Shi Ping Yang, Siuming Francis Chan
Myostatin is an important member of the Transforming Growth Factor (TGF) family that functions to regulate muscle growth in animals. In this study, the myostatin gene (FmMstn) and two slightly different (short and long forms) cDNAs of the banana shrimp Fenneropenaeus merguiensis were cloned and characterized. Similar to Mstn gene of the scallop, fish and mammal, FmMstn gene consists of 3 exons and 2 introns. The 2 kb upstream promoter region of the FmMstn gene consists of putative response elements for myocyte enhancing factor (MEF2) and E-box factors...
March 17, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28315163/activity-of-metabolic-enzymes-and-muscle-specific-gene-expression-in-parr-and-smolts-atlantic-salmon-salmo-salar-l-of-different-age-groups
#6
Maria V Churova, Olga V Meshcheryakova, Aleksey E Veselov, Denis A Efremov, Nina N Nemova
This study was conducted to characterize the energy metabolism level and the features of muscle growth regulation during the development of Atlantic salmon (Salmo salar) inhabiting the Indera River (Kola Peninsula, Russia). The activities of aerobic and anaerobic enzymes (cytochrome c oxidase and lactate dehydrogenase) and carbohydrate metabolism enzymes (glucose-6-phosphate dehydrogenase, glycerol-3-phosphate dehydrogenase, and aldolase) were measured in muscle and liver tissue. Gene expression levels of myosin heavy chain (MyHC), myostatin (MSTN-1a), and myogenic regulatory factors (MRFs-MyoD1a, MyoD1b, MyoD1c, Myf5, myogenin) were measured in the white muscles of salmon parr of ages 0+, 1+, 2+, and 3+ and smolts of ages 2+ and 3+...
March 18, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28277951/within-winter-flexibility-in-muscle-masses-myostatin-and-cellular-aerobic-metabolic-intensity-in-passerine-birds
#7
David L Swanson, Marisa O King, William Culver, Yufeng Zhang
Metabolic rates of passerine birds are flexible traits that vary both seasonally and among and within winters. Seasonal variation in summit metabolic rates (Msum = maximum thermoregulatory metabolism) in birds is consistently correlated with changes in pectoralis muscle and heart masses and sometimes with variation in cellular aerobic metabolic intensity, so these traits might also be associated with shorter-term, within-winter variation in metabolic rates. To determine whether these mechanisms are associated with within-winter variation in Msum, we examined the effects of short-term (ST; 0-7 d), medium-term (MT; 14-30 d), and long-term (LT; 30-yr means) temperature variables on pectoralis muscle and heart masses, pectoralis expression of the muscle-growth inhibitor myostatin and its metalloproteinase activators TLL-1 and TLL-2, and pectoralis and heart citrate synthase (CS; an indicator of cellular aerobic metabolic intensity) activities for two temperate-zone resident passerines, house sparrows (Passer domesticus) and dark-eyed juncos (Junco hyemalis)...
March 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28270449/supraphysiological-levels-of-gdf11-induce-striated-muscle-atrophy
#8
David W Hammers, Melissa Merscham-Banda, Jennifer Ying Hsiao, Stefan Engst, James J Hartman, H Lee Sweeney
Growth and differentiation factor (GDF) 11 is a member of the transforming growth factor β superfamily recently identified as a potential therapeutic for age-related cardiac and skeletal muscle decrements, despite high homology to myostatin (Mstn), a potent negative regulator of muscle mass. Though several reports have refuted these data, the in vivo effects of GDF11 on skeletal muscle mass have not been addressed. Using in vitro myoblast culture assays, we first demonstrate that GDF11 and Mstn have similar activities/potencies on activating p-SMAD2/3 and induce comparable levels of differentiated myotube atrophy...
March 7, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28270253/genomic-differentiation-between-asturiana-de-los-valles-avile%C3%A3-a-negra-ib%C3%A3-rica-bruna-dels-pirineus-morucha-pirenaica-retinta-and-rubia-gallega-cattle-breeds
#9
A González-Rodríguez, S Munilla, E F Mouresan, J J Cañas-Álvarez, J A Baro, A Molina, C Díaz, J Altarriba, J Piedrafita, L Varona
The Spanish local beef cattle breeds have most likely common origin followed by a process of differentiation. This particular historical evolution has most probably left detectable signatures in the genome. The objective of this study was to identify genomic regions associated with differentiation processes in seven Spanish autochthonous populations (Asturiana de los Valles (AV), Avileña-Negra Ibérica (ANI), Bruna dels Pirineus (BP), Morucha (Mo), Pirenaica (Pi), Retinta (Re) and Rubia Gallega (RG)). The BovineHD 777K BeadChip was used on 342 individuals (AV, n=50; ANI, n=48; BP, n=50; Mo, n=50; Pi, n=48; Re, n=48; RG, n=48) chosen to be as unrelated as possible...
March 8, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28250722/acute-resistance-exercise-reduces-increased-gene-expression-in-muscle-atrophy-of-ovariectomised-arthritic-rats
#10
Roberto Furlanetto, Aletéia de Paula Souza, Anselmo Alves de Oliveira, Paulo Ricardo Prado Nunes, Márcia Antoniazi Michelin, Javier Emilio Lazo Chica, Eddie Fernando Candido Murta, Fábio Lera Orsatti
OBJECTIVE: We studied the effect of resistance exercise (RE) on mRNA levels of atrogin-1, MuRF-1, and myostatin in the gastrocnemius muscle of arthritic rats after loss of ovarian function (LOF). MATERIAL AND METHODS: Thirty female Wistar rats (nine weeks old, 195.3 ±17.4 grams) were randomly allocated into five groups: control group (CT-Sham; n = 6); group with rheumatoid arthritis (RA; n = 6); group with rheumatoid arthritis subjected to RE (RAEX; n = 6); ovariectomy group with rheumatoid arthritis (RAOV; n = 6); and an ovariectomy group with rheumatoid arthritis subjected to RE (RAOVEX; n = 6)...
December 2016: Przeglad Menopauzalny, Menopause Review
https://www.readbyqxmd.com/read/28247316/selecting-potential-pharmacological-interventions-in-sarcopenia
#11
Amanda J Kilsby, Avan A Sayer, Miles D Witham
Sarcopenia of age is prevalent and costly and proven pharmacological interventions are currently lacking. The pathophysiology of sarcopenia is incompletely understood but appears to involve multiple pathways, including inflammation, hormonal dysregulation, impaired regeneration, mitochondrial dysfunction and denervation. There are several ways in which we might select potential pharmacological interventions for testing in clinical trials. These include a 'bottom-up' approach using basic science to elucidate the molecular processes involved and identify potential targets from this knowledge-a strategy that has led to the development of myostatin inhibitors...
April 2017: Drugs & Aging
https://www.readbyqxmd.com/read/28246458/associations-between-single-nucleotide-polymorphisms-in-multiple-candidate-genes-and-body-weight-in-rabbits
#12
Karim El-Sabrout, Sarah A Aggag
AIM: In this study, we examined parts of six growth genes (growth hormone [GH], melanocortin 4 receptor [MC4R], growth hormone receptor [GHR], phosphorglycerate mutase [PGAM], myostatin [MSTN], and fibroblast growth factor [FGF]) as specific primers for two rabbit lines (V-line, Alexandria) using nucleotide sequence analysis, to investigate association between detecting single nucleotide polymorphism (SNP) of these genes and body weight (BW) at market. MATERIALS AND METHODS: Each line kits were grouped into high and low weight rabbits to identify DNA markers useful for association studies with high BW...
January 2017: Veterinary World
https://www.readbyqxmd.com/read/28222403/muscular-effects-of-vitamin-d-in-young-athletes-and-non-athletes-and-in-the-elderly
#13
REVIEW
Nikolaos E Koundourakis, Pavlina D Avgoustinaki, Niki Malliaraki, Andrew N Margioris
Muscles are major targets of vitamin D. Exposure of skeletal muscles to vitamin D induces the expression of multiple myogenic transcription factors enhancing muscle cell proliferation and differentiation. At the same time vitamin D suppresses the expression of myostatin, a negative regulator of muscle mass. Moreover, vitamin D increases the number of type II or fast twitch muscle cells and in particular that of type IIA cells, while its deficiency causes type IIA cell atrophy. Furthermore, vitamin D supplementation in young males with low vitamin D levels increases the percentage of type IIA fibers in muscles, causing an increase in muscular high power output...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28217409/muscle-derived-stem-cells-stimulate-muscle-myofiber-repair-and-counteract-fat-infiltration-in-a-diabetic-mouse-model-of-critical-limb-ischemia
#14
J Tsao, I Kovanecz, N Awadalla, R Gelfand, I Sinha-Hikim, R A White, N F Gonzalez-Cadavid
BACKGROUND: Critical Limb Ischemia (CLI) affects patients with Type 2 Diabetes (T2D) and obesity, with high risk of amputation and post-surgical mortality, and no effective medical treatment. Stem cell therapy, mainly with bone marrow mesenchymal, adipose derived, endothelial, hematopoietic, and umbilical cord stem cells, is promising in CLI mouse and rat models and is in clinical trials. Their general focus is on angiogenic repair, with no reports on the alleviation of necrosis, lipofibrosis, and myofiber regeneration in the ischemic muscle, or the use of Muscle Derived Stem Cells (MDSC) alone or in combination with pharmacological adjuvants, in the context of CLI in T2D...
December 2016: Journal of Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28204905/transcriptome-assembly-and-identification-of-genes-and-snps-associated-with-growth-traits-in-largemouth-bass-micropterus-salmoides
#15
Shengjie Li, Hao Liu, Junjie Bai, Xinping Zhu
Growth is one of the most crucial economic traits of all aquaculture species, but the molecular mechanisms involved in growth of largemouth bass (Micropterus salmoides) are poorly understood. The objective of this study was to screen growth-related genes of M. salmoides by RNA sequencing and identify growth-related single-nucleotide polymorphism (SNP) markers through a growth association study. The muscle transcriptomes of fast- and slow-growing largemouth bass were obtained using the RNA-Seq technique. A total of 54,058,178 and 54,742,444 qualified Illumina read pairs were obtained for the fast-growing and slow-growing groups, respectively, giving rise to 4,865,236,020 and 4,926,819,960 total clean bases, respectively...
February 15, 2017: Genetica
https://www.readbyqxmd.com/read/28202082/bone-morphogenetic-proteins-and-myostatin-pathways-key-mediator-of-human-sarcopenia
#16
Manuel Scimeca, Eleonora Piccirilli, Francesca Mastrangeli, Cecilia Rao, Maurizio Feola, Augusto Orlandi, Elena Gasbarra, Elena Bonanno, Umberto Tarantino
BACKGROUND: Sarcopenia, osteoporosis and osteoarthritis are the most frequent musculoskeletal disorders affecting older people. The main aim of this study was to test the hypothesis that the balance between BMPs and myostatin pathways regulates the age-related muscle degeneration in OP and OA patients. To this end, we investigated the relationship among the expression of BMP-2/4-7, myostatin and phosphorylated Smads1-5-8 and the muscle quality, evaluated in term of fibers atrophy and satellite cells activity...
February 15, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28192256/response-of-gut-health-and-microbiota-to-sulfide-exposure-in-pacific-white-shrimp-litopenaeus-vannamei
#17
Yantong Suo, Erchao Li, Tongyu Li, Yongyi Jia, Jian G Qin, Zhimin Gu, Liqiao Chen
Sulfide is a natural and widely distributed toxicant. It can be commonly found on the interface between water and sediment in the aquatic environment. The Pacific white shrimp Litopenaeus vannamei starts life in the benthic zone soon after the mysis stage, an early stage of post larvae. Therefore, L. vannamei is inevitably affected by exposure to sulfide released from pond sediment. This study explored the toxicant effect of different concentrations of sulfide on the intestinal health and microbiota of Pacific white shrimp by monitoring the change of expression of inflammatory, immune related cytokines, and the structure of the intestinal microbiota...
February 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28184997/molecular-characterization-of-myostatin-from-the-skeletal-muscle-of-the-african-lungfish-protopterus-annectens-and-changes-in-its-mrna-and-protein-expression-levels-during-three-phases-of-aestivation
#18
Jasmine L Y Ong, You R Chng, Biyun Ching, Xiu L Chen, Kum C Hiong, Wai P Wong, Shit F Chew, Yuen K Ip
African lungfishes can aestivate and remain torpid without food and water for years, but disuse muscle atrophy is not prominent during aestivation. This study aimed to clone myostatin (mstn/Mstn), a factor associated with disuse muscle atrophy in mammals, from the skeletal muscle of the African lungfish Protopterus annectens, and to determine its mRNA expression level and protein abundance therein during the induction, maintenance, and arousal phases of aestivation. The complete coding cDNA sequence of mstn comprised 1128 bp, encoding for 376 amino acids with an estimated molecular mass of 42...
February 9, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28176368/pharmacological-inhibition-of-myostatin-protects-against-skeletal-muscle-atrophy-and-weakness-after-anterior-cruciate-ligament-tear
#19
Caroline Nw Wurtzel, Jonathan P Gumucio, Jeremy A Grekin, Roger K Khouri, Alan J Russell, Asheesh Bedi, Christopher L Mendias
Anterior cruciate ligament (ACL) tears are among the most frequent knee injuries in sports medicine, with tear rates in the US up to 250,000 per year. Many patients who suffer from ACL tears have persistent atrophy and weakness even after considerable rehabilitation. Myostatin is a cytokine that directly induces muscle atrophy, and previous studies rodent models and patients have demonstrated an upregulation of myostatin after ACL tear. Using a preclinical rat model, our objective was to determine if the use of a bioneutralizing antibody against myostatin could prevent muscle atrophy and weakness after ACL tear...
February 8, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28132908/administration-of-an-activin-receptor-iib-ligand-trap-protects-male-juvenile-rhesus-macaques-from-simian-immunodeficiency-virus-associated-bone-loss
#20
Wen Guo, Karol M Pencina, Karyn O'Connell, Monty Montano, Liming Peng, Susan Westmoreland, Julie Glowacki, Shalender Bhasin
HIV-infected individuals are at an increased risk of osteoporosis despite effective viral suppression. Observations that myostatin null mice have increased bone mass led us to hypothesize that simian immunodeficiency virus (SIV)-associated bone loss may be attenuated by blocking myostatin/TGFβ signaling. In this proof-of-concept study, pair-housed juvenile male rhesus macaques were inoculated with SIVmac239. Four weeks later, animals were treated with vehicle or Fc-conjugated soluble activin receptor IIB (ActR2B·Fc, iv...
January 26, 2017: Bone
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