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https://www.readbyqxmd.com/read/28315325/-epigallocatechin-3-gallate-stimulates-myogenic-differentiation-through-taz-activation
#1
A Rum Kim, Kyung Min Kim, Mi Ran Byun, Jun-Ha Hwang, Jung Il Park, Ho Taek Oh, Mi Gyeong Jeong, Eun Sook Hwang, Jeong-Ho Hong
Muscle loss is a typical process of aging. Green tea consumption is known to slow down the progress of aging. Their underlying mechanisms, however, remain largely unknown. In this study, we investigated the effect of (-)-epigallocatechin-3-gallate (EGCG), a polyphenolic compound of green tea, on myogenic differentiation and found that EGCG significantly increases myogenic differentiation. After EGCG treatment, the expression of myogenic marker genes, such as myosin heavy chain, are increased through activation of TAZ, a transcriptional coactivator with a PDZ-binding motif...
March 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28298639/benzyl-butyl-phthalate-decreases-myogenic-differentiation-of-endometrial-mesenchymal-stem-stromal-cells-through-mir-137-mediated-regulation-of-pitx2
#2
Hung-Sheng Chen, Chia-Yi Hsu, Yu-Chia Chang, Hui-Yu Chuang, Cheng-Yu Long, Tsung-Hua Hsieh, Eing-Mei Tsai
Phthalate, an environmental toxin, has been considered as an endocrine-disrupting chemical. Growing evidence has demonstrated links between endocrine-disrupting chemicals, tissue development, and reproductive physiology, but the mechanisms of gene expression regulation by environmental factors that affect cell differentiation are unclear. Herein, we investigated the effects of butyl benzyl phthalate (BBP) on human endometrial mesenchymal stem/stromal cell (EN-MSC) differentiation and identified a novel signaling pathway...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28285593/the-enzootic-life-cycle-of-borrelia-burgdorferi-sensu-lato-and-tick-borne-rickettsiae-an-epidemiological-study-on-wild-living-small-mammals-and-their-ticks-from-saxony-germany
#3
Anna Obiegala, Nina Król, Carolin Oltersdorf, Julian Nader, Martin Pfeffer
BACKGROUND: Borrelia burgdorferi (sensu lato) and rickettsiae of the spotted fever group are zoonotic tick-borne pathogens. While small mammals are confirmed reservoirs for certain Borrelia spp., little is known about the reservoirs for tick-borne rickettsiae. Between 2012 and 2014, ticks were collected from the vegetation and small mammals which were trapped in Saxony, Germany. DNA extracted from ticks and the small mammals' skin was analyzed for the presence of Rickettsia spp. and B...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28282360/an-alpha7-nicotinic-acetylcholine-receptor-agonist-gts-21-promotes-c2c12-myonuclear-accretion-in-association-with-release-of-interleukin-6-il-6-and-improves-survival-in-burned-mice
#4
Mohammed A S Khan, Mohammed F Khan, Shizuka Kashiwagi, William R Kem, Shingo Yasuhara, Masao Kaneki, Ronald G Tompkins, J A Jeevendra Martyn
The role of interleukin-6 (IL-6) in physiological processes and disease is poorly understood. The hypothesis tested in this study was that selective alpha7 acetylcholine receptor (α7AChR) agonist, GTS-21, releases of IL-6 in association with myonuclear accretion and enhances insulin signaling in muscle cells, and improves survival of burn injured (BI) mice. The in vitro effects of GTS-21 were determined in C2C12 myoblasts and 7-day differentiated myotubes (myotubes). The in vivo effects of GTS-21 were tested in BI wild type (WT) and IL-6 knockout (IL6KO) mice...
March 9, 2017: Shock
https://www.readbyqxmd.com/read/28278269/small-rodents-as-paratenic-or-intermediate-hosts-of-carnivore-parasites-in-berlin-germany
#5
Jürgen Krücken, Julia Blümke, Denny Maaz, Janina Demeler, Sabrina Ramünke, Daniela Antolová, Roland Schaper, Georg von Samson-Himmelstjerna
Rodents are important intermediate and paratenic hosts for carnivore parasites, including the important zoonotic agents Toxoplasma, Echinococcus and Toxocara. Monitoring of such parasites in rodents can be used to detect increasing risks for human and veterinary public health. Rodents were trapped at four sites in Berlin, two near the city center, two at the periphery. PCRs were conducted to detect Coccidia (target ITS-1) and specifically Toxoplasma gondii (repetitive element) in brain and ascarids (ITS-2) in muscle or brain tissue...
2017: PloS One
https://www.readbyqxmd.com/read/28274289/transmission-ecology-of-taeniid-larval-cestodes-in-rodents-in-sweden-a-low-endemic-area-for-echinococcus-multilocularis
#6
Andrea L Miller, Gert E Olsson, Sofia Sollenberg, Marion R Walburg, Moa Skarin, Johan Höglund
Although local prevalence of Echinococcus multilocularis may be high, this zoonotic parasite has an overall low prevalence in foxes and rodents in Sweden. To better understand opportunities for E. multilocularis transmission in the Swedish environment, the aim of this study was to investigate other taeniid cestodes and to relate observed patterns to E. multilocularis. Cestode parasites were examined in fox feces and rodents caught in different habitats from four regions of Sweden. Arvicola amphibius and Microtus agrestis were parasitized with Versteria mustelae, Hydatigera taeniaeformis s...
March 9, 2017: Parasitology
https://www.readbyqxmd.com/read/28271491/role-of-skeletal-muscle-in-ear-development
#7
REVIEW
Irena Rot, Mark Baguma-Nibasheka, Willard J Costain, Paul Hong, Robert Tafra, Snjezana Mardesic-Brakus, Natasa Mrduljas-Djujic, Mirna Saraga-Babic, Boris Kablar
The current paper is a continuation of our work described in Rot and Kablar, 2010. Here, we show lists of 10 up- and 87 down-regulated genes obtained by a cDNA microarray analysis that compared developing Myf5-/-:Myod-/- (and Mrf4-/-) petrous part of the temporal bone, containing middle and inner ear, to the control, at embryonic day 18.5. Myf5-/-:Myod-/- fetuses entirely lack skeletal myoblasts and muscles. They are unable to move their head, which interferes with the perception of angular acceleration. Previously, we showed that the inner ear areas most affected in Myf5-/-:Myod-/- fetuses were the vestibular cristae ampullaris, sensitive to angular acceleration...
March 8, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28267409/myogenic-differentiation-potential-of-mesenchymal-stem-cells-derived-from-fetal-bovine-bone-marrow
#8
Lucas Hidenori Okamura, Paloma Cordero, Jaime Palomino, Victor Hugo Parraguez, Cristian Gabriel Torres, Oscar Alejandro Peralta
The myogenic potential of bovine fetal MSC (bfMSC) derived from bone marrow (BM) remains unknown; despite its potential application for the study of myogenesis and its implications for livestock production. In the present study, three protocols for in vitro myogenic differentiation of bfMSC based on the use of DNA methyltransferase inhibitor 5-Aza-2'-deoxycytidine (5-Aza), myoblast-secreted factor Galectin-1 (Gal-1), and myoblast culture medium SkGM-2 BulletKit were used. Plastic-adherent bfMSC were isolated from fetal BM collected from abattoir-derived fetuses...
March 7, 2017: Animal Biotechnology
https://www.readbyqxmd.com/read/28261464/intraspecific-functional-diversity-of-common-species-enhances-community-stability
#9
Connor M Wood, Shawn T McKinney, Cynthia S Loftin
Common species are fundamental to the structure and function of their communities and may enhance community stability through intraspecific functional diversity (iFD). We measured among-habitat and within-habitat iFD (i.e., among- and within-plant community types) of two common small mammal species using stable isotopes and functional trait dendrograms, determined whether iFD was related to short-term population stability and small mammal community stability, and tested whether spatially explicit trait filters helped explain observed patterns of iFD...
March 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28255772/isolation-culture-and-biological-characteristics-of-multipotent-porcine-skeletal-muscle-satellite-cells
#10
Jinjuan Yang, Hao Liu, Kunfu Wang, Lu Li, Hongyi Yuan, Xueting Liu, Yingjie Liu, Weijun Guan
Skeletal muscle has a huge regenerative potential for postnatal muscle growth and repair, which mainly depends on a kind of muscle progenitor cell population, called satellite cell. Nowadays, the majority of satellite cells were obtained from human, mouse, rat and other animals but rarely from pig. In this article, the porcine skeletal muscle satellite cells were isolated and cultured in vitro. The expression of surface markers of satellite cells was detected by immunofluorescence and RT-PCR assays. The differentiation capacity was assessed by inducing satellite cells into adipocytes, myoblasts and osteoblasts...
March 2, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28249631/expansion-of-spatial-and-host-range-of-puumala-virus-in-sweden-an-increasing-threat-for-humans
#11
O Borg, M Wille, P Kjellander, U A Bergvall, P-E Lindgren, J Chirico, Å Lundkvist
Hantaviruses are globally distributed and cause severe human disease. Puumala hantavirus (PUUV) is the most common species in Northern Europe, and the only hantavirus confirmed to circulate in Sweden, restricted to the northern regions of the country. In this study, we aimed to further add to the natural ecology of PUUV in Sweden by investigating prevalence, and spatial and host species infection patterns. Specifically, we wanted to ascertain whether PUUV was present in the natural reservoir, the bank vole (Myodes glareolus) further south than Dalälven river, in south-central Sweden, and whether PUUV can be detected in other rodent species in addition to the natural reservoir...
March 2, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28245831/puumala-hantavirus-infections-in-bank-vole-populations-host-and-virus-dynamics-in-central-europe
#12
Daniela Reil, Ulrike M Rosenfeld, Christian Imholt, Sabrina Schmidt, Rainer G Ulrich, Jana A Eccard, Jens Jacob
BACKGROUND: In Europe, bank voles (Myodes glareolus) are widely distributed and can transmit Puumala virus (PUUV) to humans, which causes a mild to moderate form of haemorrhagic fever with renal syndrome, called nephropathia epidemica. Uncovering the link between host and virus dynamics can help to prevent human PUUV infections in the future. Bank voles were live trapped three times a year in 2010-2013 in three woodland plots in each of four regions in Germany. Bank vole population density was estimated and blood samples collected to detect PUUV specific antibodies...
February 28, 2017: BMC Ecology
https://www.readbyqxmd.com/read/28228414/moderate-and-sustained-exercise-modulates-muscle-proteolytic-and-myogenic-markers-in-gilthead-sea-bream-sparus-aurata
#13
Emilio J Vélez, Sheida Azizi, Esmail Lutfi, Encarnación Capilla, Alberto Moya, Isabel Navarro, Jaume Fernández-Borràs, Josefina Blasco, Joaquim Gutiérrez
Swimming activity primarily accelerates growth in fish by increasing protein synthesis and energy efficiency. The role of muscle in this process is remarkable and especially important in teleosts, where muscle represents a high percentage of body weight, and by the continuous growth that many fish species present. The aim of this work was to characterize the effects of five weeks of moderate and sustained swimming in gene and protein expression of myogenic regulatory factors, proliferation markers and proteolytic molecules in two muscle regions (anterior and caudal) of gilthead sea bream fingerlings...
February 22, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28228365/isoquinoline-alkaloids-from-coptis-japonica-stimulate-the-myoblast-differentiation-via-p38-map-kinase-and-akt-signaling-pathway
#14
Heyjin Lee, Le Thi Tuong, Ji Hye Jeong, Sang-Jin Lee, Gyu-Un Bae, Jae-Ha Ryu
To overcome the muscle atrophy, such as cachexia and sarcopenia, we tried to find myogenic agents from medicinal plants. From myogenic extract of Coptis japonica, we purified six isoquinoline alkaloids and evaluated their effects on transactivation of myoD and MHC expression in C2C12 cells during differentiation process. Among obtained compounds, magnoflorine most efficiently enhanced the myoblast differentiation by activating the p38 MAP kinase and Akt pathway, and also increased the number of multinucleated and cylinder-shaped myotubes...
February 4, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28228264/lsd1-controls-timely-myod-expression-via-myod-core-enhancer-transcription
#15
Isabella Scionti, Shinichiro Hayashi, Sandrine Mouradian, Emmanuelle Girard, Joana Esteves de Lima, Véronique Morel, Thomas Simonet, Maud Wurmser, Pascal Maire, Katia Ancelin, Eric Metzger, Roland Schüle, Evelyne Goillot, Frederic Relaix, Laurent Schaeffer
MyoD is a master regulator of myogenesis. Chromatin modifications required to trigger MyoD expression are still poorly described. Here, we demonstrate that the histone demethylase LSD1/KDM1a is recruited on the MyoD core enhancer upon muscle differentiation. Depletion of Lsd1 in myoblasts precludes the removal of H3K9 methylation and the recruitment of RNA polymerase II on the core enhancer, thereby preventing transcription of the non-coding enhancer RNA required for MyoD expression (CEeRNA). Consistently, Lsd1 conditional inactivation in muscle progenitor cells during embryogenesis prevented transcription of the CEeRNA and delayed MyoD expression...
February 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28223352/cross-talk-between-the-glucocorticoid-receptor-and-myod-family-inhibitor-domain-containing-protein-provides-a-new-mechanism-for-generating-tissue-specific-responses-to-glucocorticoids
#16
Robert H Oakley, John M Busillo, John A Cidlowski
Glucocorticoids are primary stress hormones that regulate many physiological processes, and synthetic derivatives of these molecules are widely used in the clinic. The molecular factors that govern tissue specificity of glucocorticoids, however, are poorly understood. The actions of glucocorticoids are mediated by the glucocorticoid receptor (GR). To discover new proteins that interact with GR and modulate its function, we performed a yeast 2-hybrid assay. The MyoD family inhibitor domain containing (MDFIC) protein was identified as a binding partner for GR...
February 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28197948/mercury-in-soil-earthworms-and-organs-of-voles-myodes-glareolus-and-shrew-sorex-araneus-in-the-vicinity-of-an-industrial-complex-in-northwest-russia-cherepovets
#17
V T Komov, E S Ivanova, N Y Poddubnaya, V A Gremyachikh
The characteristic properties of uptake and distribution of mercury in terrestrial ecosystems have received much lesser attention compared to aquatic particularly in Russia. Terrestrial ecosystems adjacent to large industrial manufactures-potential sources of mercury inflow into the environment frequently remain unstudied. This is the first report on mercury (Hg) levels in the basic elements of terrestrial ecosystems situated close to a large metallurgical complex.Mean values of mercury concentration (mg Hg/kg dry weight) in the vicinity of city of Cherepovets were the following: 0...
March 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28197667/discovery-and-progress-of-direct-cardiac-reprogramming
#18
REVIEW
Hidenori Kojima, Masaki Ieda
Cardiac disease remains a major cause of death worldwide. Direct cardiac reprogramming has emerged as a promising approach for cardiac regenerative therapy. After the discovery of MyoD, a master regulator for skeletal muscle, other single cardiac reprogramming factors (master regulators) have been sought. Discovery of cardiac reprogramming factors was inspired by the finding that multiple, but not single, transcription factors were needed to generate induced pluripotent stem cells (iPSCs) from fibroblasts. We first reported a combination of cardiac-specific transcription factors, Gata4, Mef2c, and Tbx5 (GMT), that could convert mouse fibroblasts into cardiomyocyte-like cells, which were designated as induced cardiomyocyte-like cells (iCMs)...
February 14, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28192046/distribution-and-seasonal-variation-of-ljungan-virus-in-bank-voles-myodes-glareolus-in-fennoscandia
#19
Cristina Fevola, Chiara Rossi, Roberto Rosà, Åke Nordström, Frauke Ecke, Magnus Magnusson, Andrea L Miller, Jukka Niemimaa, Gert E Olsson, Anne J Jääskeläinen, Birger Hörnfeldt, Heikki Henttonen, Heidi C Hauffe
Ljungan virus (LV) is a picornavirus originally isolated from Swedish bank voles ( Myodes glareolus ) in 1998. The association of LV with human disease has been debated ever since, but fundamental data on the ecology of the virus are still lacking. Here we present results of the first intensive study on the prevalence of LV in bank voles trapped in Fennoscandia (Sweden and Finland) from 2009-2012 as determined by PCR. Using an LV-specific RT-PCR, LV was detected in the liver of 73 out of 452 (16.2%) individuals and in 13 out of 17 sampling sites across Sweden and Finland (mean per site prevalence 16%, SE 3%, range 0-50%)...
February 13, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28188264/immortalized-human-myotonic-dystrophy-muscle-cell-lines-to-assess-therapeutic-compounds
#20
Arandel Ludovic, Polay-Espinosa Micaela, Matloka Magdalena, Bazinet Audrey, De Dea Diniz Damily, Naouar Naïra, Rau Frédérique, Jollet Arnaud, Edom-Vovard Frédérique, Mamchaoui Kamel, Tarnopolsky Mark, Puymirat Jack, Battail Christophe, Boland Anne, Deleuze Jean-Francois, Mouly Vincent, Klein F Arnaud, Furling Denis
Myotonic dystrophy type 1 (DM1) and type 2 (DM2) are autosomal dominant neuromuscular diseases caused by microsatellite expansions and belong to the family of RNA dominant disorders. Availability of cellular models in which the DM mutation is expressed within its natural context is essential to facilitate efforts to identify new therapeutic compounds. Here we generated immortalized DM1 and DM2 human muscle cell lines that display nuclear RNA-aggregates of expanded repeats, a hallmark of myotonic dystrophy. Selected clones of DM1 and DM2 immortalized myoblasts behave as parental primary myoblasts with a reduced fusion capacity of immortalized DM1 myoblasts when compared to control and DM2 cells...
February 10, 2017: Disease Models & Mechanisms
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