keyword
MENU ▼
Read by QxMD icon Read
search

Muscle differentiation

keyword
https://www.readbyqxmd.com/read/28110043/is-myoelectric-activity-distributed-equally-within-the-rectus-femoris-muscle-during-loaded-squat-exercises
#1
Leonardo Mendes Leal de Souza, Desirée Barros da Fonseca, Hélio da Veiga Cabral, Liliam Fernandes de Oliveira, Taian Martins Vieira
Recent evidence suggests different regions of the rectus femoris (RF) muscle respond differently to squat exercises. Such differential adaptation may result from neural inputs distributed locally within RF, as previously reported for isometric contractions, walking and in response to fatigue. Here we therefore investigate whether myoelectric activity distributes evenly within RF during squat. Surface electromyograms (EMGs) were sampled proximally and distally from RF with arrays of electrodes, while thirteen healthy volunteers performed 10 consecutive squats with 20% and 40% of their body weight...
January 9, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28109823/divergent-regulation-of-insulin-like-growth-factor-binding-protein-genes-in-cultured-atlantic-salmon-myotubes-under-different-models-of-catabolism-and-anabolism
#2
Daniel Garcia de la Serrana, Eduardo N Fuentes, Samuel A M Martin, Ian A Johnston, Daniel J Macqueen
Much attention has been given to insulin-like growth factor (Igf) pathways that regulate the balance of skeletal muscle protein synthesis and breakdown in response to a range of extrinsic and intrinsic signals. However, we have a less complete understanding of how the same signals modulate muscle mass upstream of such signalling, through a family of functionally-diverse Igf-binding proteins (Igfbps) that modify the availability of Igfs to the cell receptor Igf1r. We exposed cultured myotubes from Atlantic salmon (Salmo salar L...
January 18, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28109612/topographic-mapping-of-left-ventricular-regional-contractile-injury-in-ischemic-mitral-regurgitation
#3
Timothy S Lancaster, Julia Kar, Brian P Cupps, Matthew C Henn, Kevin Kulshrestha, Danielle J Koerner, Michael K Pasque
OBJECTIVE: Restrictive leaflet tethering resulting from regional left ventricular (LV) contractile injury causes ischemic mitral regurgitation (MR). We hypothesized that 3-dimensional LV topographic mapping by MRI-based multiparametric strain analysis could characterize the regional contractile injury patterns that differentiate ischemic coronary artery disease patients who have ischemic MR from those who do not. METHODS: Magnetic resonance imaging-based multiparametric strain data were calculated for 15,300 LV grid points in 100 normal volunteers...
December 19, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28108669/developmental-differences-in-dynamic-muscle-tendon-behavior-implications-for-movement-efficiency
#4
C M Waugh, T Korff, A J Blazevich
Children perform cyclic motor tasks less efficiently than adults, however the mechanisms underlying such differences are not fully understood. One mechanism that may contribute these age-related differences is a differential contribution of muscles and tendons to a given muscle tendon unit (MTU) excursion. The aims of this study were to a) compare muscle and tendon excursion between children and adults performing vertical hopping, and b) determine if children and adults choose a hopping frequency that maximizes movement efficiency, based on the utilization of energy-saving mechanisms...
January 20, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28108369/jaburetox-affects-gene-expression-and-enzyme-activities-in-rhodnius-prolixus-a-chagas-disease-vector
#5
Leonardo L Fruttero, Natalia R Moyetta, Monique Siebra Krug, Valquiria Broll, Matheus V Coste Grahl, Rafael Real-Guerra, Fernanda Stanisçuaski, Celia R Carlini
Jaburetox, a recombinant peptide of ∼11kDa derived from one of the Canavalia ensiformis (Jack Bean) urease isoforms, is toxic and lethal to insects belonging to different orders when administered orally or via injection. Previous findings indicated that Jaburetox acts on insects in a complex fashion, inhibiting diuresis and the transmembrane potential of Malpighian tubules, interfering with muscle contractility and affecting the immune system. In vitro, Jaburetox forms ionic channels and alters permeability of artificial lipid membranes...
January 17, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28107746/induced-differentiation-of-human-gingival-fibroblasts-into-vsmc-like-cells
#6
Xuqian Liu, Jie Wang, Fusheng Dong, Hexiang Li, Yali Hou
Vascular smooth muscle cells (VSMCs) are major component of the vascular wall, and they play an essential role in maintaining the basic physiological function and stable structure of the vascular wall. In the present study, human gingival fibroblasts (HGFs) were cultured and induced into VSMC-like cells in vitro to confirm that HGFs with properties of stem cells have the potential for differentiation. The epithelium isolated from patients was extracted from normal human gingiva consisting of epithelium and connective tissue...
January 17, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28107658/validation-of-a-personalized-curved-muscle-model-of-the-lumbar-spine-during-complex-dynamic-exertions
#7
Jaejin Hwang, Gregory G Knapik, Jonathan S Dufour, Thomas M Best, Safdar N Khan, Ehud Mendel, William S Marras
Previous curved muscle models have typically examined their robustness only under simple, single-plane static exertions. In addition, the empirical validation of curved muscle models through an entire lumbar spine has not been fully realized. The objective of this study was to empirically validate a personalized biologically-assisted curved muscle model during complex dynamic exertions. Twelve subjects performed a variety of complex lifting tasks as a function of load weight, load origin, and load height. Both a personalized curved muscle model as well as a straight-line muscle model were used to evaluate the model's fidelity and prediction of three-dimensional spine tissue loads under different lifting conditions...
January 9, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28106696/use-of-acellular-dermal-matrix-in-treatment-of-congenital-muscular-torticollis-in-patients-over-eight-years-of-age
#8
Hyung Min Hahn, Kyung Hoon Cook, Il Jae Lee, Dong Ha Park, Myong Chul Park
BACKGROUND: Treatment for neglected or recurred congenital muscular torticollis should be differentiated from primary patients due to the long-standing adjacent tissue contracture. The aim of this study was to evaluate the effect of acellular dermal matrix (ADM) on surgery of recurred and neglected patients of congenital muscular torticollis. METHODS: Forty-nine patients were included in the study. All patients underwent resection at the distal end of the sternocleidomastoid muscle...
January 18, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28106509/potential-epigenetic-biomarkers-of-obesity-related-insulin-resistance-in-human-whole-blood
#9
Samantha E Day, Richard L Coletta, Joon Young Kim, Luis A Garcia, Latoya E Campbell, Tonya R Benjamin, Lori R Roust, Elena A De Filippis, Lawrence J Mandarino, Dawn K Coletta
Obesity can increase the risk of complex metabolic diseases, including insulin resistance. Moreover, obesity can be caused by environmental and genetic factors. However, the epigenetic mechanisms of obesity are not well defined. Therefore, the identification of novel epigenetic biomarkers of obesity allows for a more complete understanding of the disease and its underlying insulin resistance. The aim of our study was to identify DNA methylation changes in whole-blood that were strongly associated with obesity and insulin resistance...
January 20, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28106300/expression-profiles-analysis-and-functional-characterization-of-microrna-660-in-skeletal-muscle-differentiation
#10
Binglin Yue, Jiyao Wu, Yanhuan Wang, Chunlei Zhang, Xingtang Fang, Hong Chen
MicroRNA are a series of small non-coding RNAs that have emerged as critical regulators of skeletal muscle development. Here, we concentrated on the function of miR-660 during bovine skeletal myogenesis from our previous high-throughput sequencing results, then analyzed its expression profiles and characterized related functional roles. Overexpression of miR-660 significantly attenuated myogenic differentiation of C2C12 cells, whereas miR-660 inhibition enhanced C2C12 differentiation. Dual-Luciferase Reporter Assay went for demonstrating that miR-660 directly targeted the 3'-UTR of Rho guanine nucleotide exchange factor 12(ARHGEF-12)...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28106162/heterogeneous-nuclear-ribonucleoprotein-m-associates-with-mtorc2-and-regulates-muscle-differentiation
#11
Wei-Yen Chen, Chia-Lung Lin, Jen-Hua Chuang, Fu-Yu Chiu, Yun-Ya Sun, Mei-Chih Liang, Yenshou Lin
Mammalian target of rapamycin (mTOR) plays a range of crucial roles in cell survival, growth, proliferation, metabolism, and morphology. However, mTOR forms two distinct complexes, mTOR complex 1 and mTOR complex 2 (mTORC1 and mTORC2), via association with a series of different components; this allows the complexes to execute their wide range of functions. This study explores further the composition of the mTORC2 complex. Utilizing Rictor knock-out cells, immunoprecipitation and mass spectrometry, a novel Rictor associated protein, heterogeneous nuclear ribonucleoprotein M (hnRNP M), was identified...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28106095/modeling-stem-cell-myogenic-differentiation
#12
Rajiv S Deshpande, Alexander A Spector
The process of stem cell myogenesis (transformation into skeletal muscle cells) includes several stages characterized by the expression of certain combinations of myogenic factors. The first part of this process is accompanied by cell division, while the second part is mainly associated with direct differentiation. The mechanical cues are known to enhance stem cell myogenesis, and the paper focuses on the stem cell differentiation under the condition of externally applied strain. The process of stem cell myogenic differentiation is interpreted as the interplay among transcription factors, targeted proteins and strain-generated signaling molecule, and it is described by a kinetic multi-stage model...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105966/a-novel-approach-for-pathway-analysis-of-gwas-data-highlights-role-of-bmp-signaling-and-muscle-cell-differentiation-in-colorectal-cancer-susceptibility
#13
Aniket Mishra, Stuart MacGregor
Genome-wide association studies (GWAS) have revolutionized the field of gene mapping. As the GWAS field matures, it is becoming clear that for many complex traits, a proportion of the missing heritability is attributable to common variants of individually small effect. Detecting these small effects individually can be difficult, and statistical power would be increased if relevant variants could be grouped together for testing. Here, we propose a VEGAS2Pathway approach that aggregates association strength of individual markers into pre-specified biological pathways...
February 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28104493/the-effect-of-parathyroid-hormone-on-the-uptake-and-retention-of-25-hydroxyvitamin-d-in-skeletal-muscle-cells
#14
REVIEW
M Abboud, M S Rybchyn, J Liu, Y Ning, C Gordon-Thomson, T C Brennan-Speranza, L Cole, H Greenfield, D R Fraser, R S Mason
Data from our studies, and those of others, support the proposal that there is a role for skeletal muscle in the maintenance of vitamin D status. We demonstrated that skeletal muscle is able to internalise extracellular vitamin D binding protein, which then binds to actin in the cytoplasm, to provide high affinity binding sites which accumulate 25-hydroxyvitamin D3 (25(OH)D3) [1]. This study investigated the concentration- and time-dependent effects of parathyroid hormone (PTH) on the capacity of muscle cells to take up and release (3)H-25(OH)D3...
January 16, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28104472/downregulation-of-mir-145-in-venous-malformations-its-association-with-disorganized-vessels-and-sclerotherapy
#15
Hou-Fu Xia, Jian-Gang Ren, Jun-Yi Zhu, Zi-Li Yu, Wei Zhang, Yan-Fang Sun, Yi-Fang Zhao, Gang Chen
Venous malformations (VMs) are characterized by ectatic and tortuous venous channels with decreased perivascular cell coverage. Recent studies have discovered that miR-145 plays a critical role in amounts of vascular diseases through regulating the differentiation and phenotype of vascular smooth muscle cells (VSMCs). However, the potential roles of miR-145 in VMs remain unknown. In this study, 21 samples of VMs without treatment history, and 10 samples of healthy donor skin, were collected to evaluate the expression level of TGF-β, miR-145, and α-SMA by immunohistochemistry, in situ hybridization, and real-time polymerase chain reaction (PCR)...
January 16, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28103314/expression-of-a-mutant-sema3a-protein-with-diminished-signalling-capacity-does-not-alter-als-related-motor-decline-or-confer-changes-in-nmj-plasticity-after-botoxa-induced-paralysis-of-male-gastrocnemic-muscle
#16
Elizabeth B Moloney, Barbara Hobo, Fred De Winter, Joost Verhaagen
Terminal Schwann cells (TSCs) are specialized cells that envelop the motor nerve terminal, and play a role in the maintenance and regeneration of neuromuscular junctions (NMJs). The chemorepulsive protein semaphorin 3A (SEMA3A) is selectively up-regulated in TSCs on fast-fatigable muscle fibers following experimental denervation of the muscle (BotoxA-induced paralysis or crush injury to the sciatic nerve) or in the motor neuron disease amyotrophic lateral sclerosis (ALS). Re-expression of SEMA3A in this subset of TSCs is thought to play a role in the selective plasticity of nerve terminals as observed in ALS and following BotoxA-induced paralysis...
2017: PloS One
https://www.readbyqxmd.com/read/28102336/differential-effects-of-phytotherapic-preparations-in-the-hsod1-drosophila-melanogaster-model-of-als
#17
Francescaelena De Rose, Roberto Marotta, Giuseppe Talani, Tiziano Catelani, Paolo Solari, Simone Poddighe, Giuseppe Borghero, Francesco Marrosu, Enrico Sanna, Sanjay Kasture, Elio Acquas, Anna Liscia
The present study was aimed at characterizing the effects of Withania somnifera (Wse) and Mucuna pruriens (Mpe) on a Drosophila melanogaster model for Amyotrophic Lateral Sclerosis (ALS). In particular, the effects of Wse and Mpe were assessed following feeding the flies selectively overexpressing the wild human copper, zinc-superoxide dismutase (hSOD1-gain-of-function) in Drosophila motoneurons. Although ALS-hSOD1 mutants showed no impairment in life span, with respect to GAL4 controls, the results revealed impairment of climbing behaviour, muscle electrophysiological parameters (latency and amplitude of ePSPs) as well as thoracic ganglia mitochondrial functions...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102011/local-myogenic-pulp-derived-cell-injection-enhances-craniofacial-muscle-regeneration-in-vivo
#18
J E Jung, M J Song, S Shin, Y J Choi, K H Kim, C J Chung
OBJECTIVES: To enhance myogenic differentiation in pulp cells isolated from extracted premolars by epigenetic modification using a DNA demethylation agent, 5-aza-2'-deoxycytidine (5-Aza), and to evaluate the potent stimulatory effect of 5-Aza-treated pulp cell injection for craniofacial muscle regeneration in vivo. SETTING AND SAMPLE POPULATION: Pulp cells were isolated from premolars extracted for orthodontic purposes from four adults (age range, 18-22.1 years)...
February 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28101909/efficient-transdifferentiation-of-human-dermal-fibroblasts-into-skeletal-muscle
#19
Selwa Mokhtar Boularaoui, Khaled M A Abdel-Raouf, Noaf Salah Ali Alwahab, Megan E Kondash, George A Truskey, Jeremy Choon Meng Teo, Nicolas Christoforou
Skeletal muscle holds significant regenerative potential but is incapable of restoring tissue loss caused due to severe injury, congenital defects, or tumor ablation. Consequently, skeletal muscle models are being developed to study human pathophysiology and regeneration. Their physiological accuracy, however, is hampered by the lack of an easily accessible human cell source that is readily expandable and capable of efficient differentiation. MYOD1, a master gene regulator, induces transdifferentiation of a variety of cell types into skeletal muscle, although inefficiently in human cells...
January 18, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28101704/molecular-cloning-and-gene-protein-expression-of-fat-cd36-from-grass-carp-ctenopharyngodon-idella-and-the-regulation-of-its-expression-by-dietary-energy
#20
Juan Tian, Wei Liu, Weihua Gao, Fan Wu, Lijuan Yu, Xing Lu, Chang-Geng Yang, Ming Jiang, Hua Wen
Fatty acid translocase/cluster of differentiation 36 (FAT/CD36) functions as a membrane long-chain fatty acid transporter in various tissues in land animals. Not much is known about the CD36 molecule in teleost fish. Therefore, we studied CD36 in grass carp (Ctenopharyngodon idella, ciCD36). The full-length complementary DNA sequence of ciCD36 was 1976 bp, with an ORF of 468 amino acids, which had high sequence similarity to the CD36 of common carp. The messenger RNA (mRNA) expression of ciCD36 was high in the intestine, heart, liver, visceral tissue, and brain, but absent in the kidney...
January 18, 2017: Fish Physiology and Biochemistry
keyword
keyword
22713
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"