keyword
MENU ▼
Read by QxMD icon Read
search

strain muscle

keyword
https://www.readbyqxmd.com/read/27913925/changes-in-stiffness-of-the-dorsal-scapular-muscles-before-and-after-computer-work-a-comparison-between-individuals-with-and-without-neck-and-shoulder-complaints
#1
Hiroaki Ishikawa, Takayuki Muraki, Shuhei Morise, Yusuke Sekiguchi, Nobuyuki Yamamoto, Eiji Itoi, Shin-Ichi Izumi
PURPOSE: The aim of this study was to compare the stiffness of the dorsal scapular muscles before and after computer work between individuals with and without neck and shoulder complaints. METHODS: Thirty subjects were divided into patient (n = 18) and control (n = 12) groups. The stiffness of the upper trapezius, levator scapulae, and rhomboid major was measured using ultrasound elastography before and after a 30-min typing task. The strain ratio of the muscle to an acoustic coupler was calculated (a lower strain ratio value indicates greater muscle stiffness)...
December 2, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27913923/actn3-x-allele-carriers-had-greater-levels-of-muscle-damage-during-a-half-ironman
#2
Juan Del Coso, Juan José Salinero, Beatriz Lara, César Gallo-Salazar, Francisco Areces, Carlos Puente, David Herrero
PURPOSE: Alpha-actinin-3, encoded by the ACTN3 gene, is an actin-binding protein with an important role in myofibril contraction and muscle force output. In humans, there is a relatively common deficiency of the α-actinin-3 due to homozygosity in a polymorphism of the ACTN3 gene (R577X, rs1815739), that has been related to decreased resistance to strain during voluntary muscle contractions. The purpose of this study was to investigate the influence of the ACTN3 genotype on the level of exercise-induced muscle damage attained by 23 experienced triathletes during an official half-ironman competition...
December 2, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27913423/bronchodilatory-effect-of-deep-inspiration-in-freshly-isolated-sheep-lungs
#3
William D Wong, Lu Wang, Peter D Paré, Chun Y Seow
Taking a big breath is known to reverse bronchoconstriction induced by bronchochallenge in healthy subjects; this bronchodilatory effect of deep inspiration (DI) is diminished in asthmatics. The mechanism underlying the DI effect is not clear. Observations from experiments using isolated airway smooth muscle (ASM) preparations and airway segments suggest that straining of ASM due to DI could lead to bronchodilation, possibly due to strain-induced reduction in ASM contractility. However, factors external to the lung cannot be excluded as potential causes for the DI effect...
December 2, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27903535/magnetic-resonance-imaging-of-cardiac-strain-pattern-following-transplantation-of-human-tissue-engineered-heart-muscles
#4
Xulei Qin, Johannes Riegler, Malte Tiburcy, Xin Zhao, Tony Chour, Babacar Ndoye, Michael Nguyen, Jackson Adams, Mohamed Ameen, Thomas S Denney, Phillip C Yang, Patricia Nguyen, Wolfram H Zimmermann, Joseph C Wu
BACKGROUND: The use of tissue engineering approaches in combination with exogenously produced cardiomyocytes offers the potential to restore contractile function after myocardial injury. However, current techniques assessing changes in global cardiac performance after such treatments are plagued by relatively low detection ability. Since the treatment is locally performed, this detection could be improved by myocardial strain imaging that measures regional contractility. METHODS AND RESULTS: Tissue engineered heart muscles (EHMs) were generated by casting human embryonic stem cell-derived cardiomyocytes with collagen in preformed molds...
November 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27902904/infection-with-some-infectious-bursal-disease-virus-pathotypes-produces-virus-in-chicken-muscle-tissue-and-the-role-of-humoral-immunity-as-a-mitigation-strategy
#5
Mariana Sá E Silva, Kateri Bertran, Kira Moresco, Daral J Jackwood, David E Swayne
Infectious bursal disease virus (IBDV) causes important economic losses and negatively affects global trade in poultry and poultry products. This study determined the presence of IBDV in primary lymphoid tissues and muscle tissue of infected broilers and the role of vaccination as a mitigation strategy. In the first study, specific-pathogen-free (SPF) broiler chickens were challenged with STC (classical [cIBDV]), Indiana (variant [varIBDV]), rA (very virulent [vvIBDV]), or Ohio (serotype 2, avirulent) IBDV...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27901409/a-non-invasive-in-vitro-monitoring-system-reporting-skeletal-muscle-differentiation
#6
Deniz Öztürk-Kaloglu, David Hercher, Philipp Heher, Katja Posa-Markaryan, Simon Sperger, Alice Zimmermann, Susanne Wolbank, Heinz Redl, Ara Hacobian
Monitoring of cell differentiation is a crucial aspect of cell-based therapeutic strategies depending on tissue maturation. In this study we have developed a non-invasive reporter system to trace murine skeletal muscle differentiation. Either a secreted bioluminescent reporter (Metridia luciferase) or a fluorescent reporter (GFP) was placed under the control of the truncated muscle creatine kinase (MCK) basal promoter enhanced by variable numbers of upstream MCK E-boxes. The engineered pE3MCK vector, coding a triple tandem of E-Boxes and the truncated MCK promoter, showed 20-fold higher levels of luciferase activation compared to a CMV promoter...
November 30, 2016: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/27899306/molecular-characterization-of-chicken-anemia-virus-outbreaks-in-nagpur-province-india-from-2012-2015
#7
Ketan Ganar, Manisha Shah, Bhupesh P Kamdi, Nitin Vasantrao Kurkure, Sachin Kumar
Chicken anemia virus (CAV) is one of the important poultry pathogen. CAV infection can cause immunosuppression, aggravation of co-infections, vaccination failures and mortality. We are reporting the CAV outbreaks from the Nagpur province of India, between the years 2012-2015. The breed included cockerel and Black Australorp of age varying from 29 to 50 days. The mortality rate observed among poultry was from 20% to 62.5%. Clinical symptoms like anemia, subcutaneous hemorrhages, growth retardation, abnormal feathers and hind limb paralysis suggested CAV infection...
November 26, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27895704/the-extracellular-microscape-governs-mesenchymal-stem-cell-fate
#8
REVIEW
William J Hadden, Yu Suk Choi
Each cell forever interacts with its extracellular matrix (ECM); a stem cell relies on this interaction to guide differentiation. The stiffness, nanotopography, protein composition, stress and strain inherent to any given ECM influences stem cell lineage commitment. This interaction is dynamic, multidimensional and reciprocally evolving through time, and from this concerted exchange the macroscopic tissues that comprise living organisms are formed. Mesenchymal stem cells can give rise to bone, cartilage, tendon and muscle; thus attempts to manipulate their differentiation must heed the physical properties of incredibly complex native microenvironments to realize regenerative goals...
2016: Journal of Biological Engineering
https://www.readbyqxmd.com/read/27895593/baseline-muscle-mass-is-a-poor-predictor-of-functional-overload-induced-gain-in-the-mouse-model
#9
Audrius Kilikevicius, Lutz Bunger, Arimantas Lionikas
Genetic background contributes substantially to individual variability in muscle mass. Muscle hypertrophy in response to resistance training can also vary extensively. However, it is less clear if muscle mass at baseline is predictive of the hypertrophic response. The aim of this study was to examine the effect of genetic background on variability in muscle mass at baseline and in the adaptive response of the mouse fast- and slow-twitch muscles to overload. Males of eight laboratory mouse strains: C57BL/6J (B6, n = 17), BALB/cByJ (n = 7), DBA/2J (D2, n = 12), B6...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27888465/bacillus-piscis-sp-nov-a-novel-bacterium-isolated-from-the-muscle-of-the-antarctic-fish-dissostichus-mawsoni
#10
Jae-Bong Lee, Seon Hwa Jeon, Seok-Gwan Choi, Hee-Young Jung, Myung Kyum Kim, Sathiyaraj Srinivasan
In this paper, a new bacterial strain designated as 16MFT21(T) is isolated from the muscle of a fish caught in the Antarctic Ocean. Strain 16MFT21(T) is a Gram-staining-positive, catalase-oxidase-positive, rod-shaped facultative-aerobic bacterium. The phylogenetic analysis that is based on the 16S-rRNA gene sequence of strain 16MFT21(T) revealed that it belongs to the genus Bacillus in the family Bacillaceae in the class Bacilli. The highest degrees of the sequence similarity of the strain 16MFT21(T) is with Bacillus licheniformis ATCC 14580(T) (96...
December 2016: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/27888462/deinococcus-rubellus-sp-nov-bacteria-isolated-from-the-muscle-of-antarctic-fish
#11
Seok-Gwan Choi, Seon Hwa Jeon, Jae-Bong Lee, Eun Sun Joo, Sangyong Lim, Hee-Young Jung, Myung Kyum Kim
Two new bacterial strains designated as Ant6(T) and Ant18 were isolated from the muscle of a fish which had been caught in the Antarctic Ocean. Both strains are Gram-stain-positive, catalase positive, oxidase negative, aerobic, and coccoid bacteria. Phylogenetic analysis based on the 16S rRNA gene sequences of strains Ant6(T) and Ant18 revealed that the strains Ant6(T) and Ant18 belong to the genus Deinococcus in the family Deinococcaceae in the class Deinococci. The highest degrees of sequence similarities of strains Ant6(T) and Ant18 were found with Deinococcus alpinitundrae LMG 24283(T) by 96...
December 2016: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/27886611/inter-and-intraobserver-consistency-in-lv-myocardial-strain-measurement-using-a-novel-multi-layer-technique-in-patients-with-severe-aortic-stenosis-and-preserved-lv-ejection-fraction
#12
Koya Ozawa, Nobusada Funabashi, Tomoko Kamata, Yoshio Kobayashi
BACKGROUND: A new transthoracic echocardiography (TTE) technique allows multi-layer measurement of left ventricular (LV), endocardial, epicardial, and whole layer myocardial strain. We evaluated interobserver and intraobserver TTE reproducibility for 2D LV global longitudinal (GLS) and circumferential strain (GCS) estimates using data from severe aortic stenosis (AS) subjects with preserved LV ejection fraction (EF). METHODS: Twenty severe AS subjects (11 male; mean age, 75±7years; LV EF >50%) underwent TTE (Vivid E9, GE Healthcare)...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27886582/crude-extract-of-cyanobacteria-radiocystis-fernandoi-strain-r28-induces-liver-impairments-in-fish
#13
M G Paulino, D Tavares, F Bieczynski, P G Pedrão, N E S Souza, M M Sakuragui, C M Luquet, A P Terezan, J B Fernandes, A Giani, M N Fernandes
Radiocystis fernandoi R28 strain is a cyanobacterium which produces mostly the RR and YR microcystin variants (MC-RR and MC-YR, respectively). The effects of crude extract of the R. fernandoi strain R28 were evaluated on the protein phosphatases and on the structure and ultrastructure of the liver of the Neotropical fish, Hoplias malabaricus, after acute and subchronic exposure. Concomitantly, the accumulation of the majority of MCs was determined in the liver and muscle. The fish were exposed to 120.60 MC-RR+MC-LR kg-fish(-1) (=100μg MC-LReq kg-fish(-1)) for 12 and 96h (one single dose, acute exposure) and 30days (one similar dose every 72h, subchronic exposure)...
November 17, 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/27884430/strengthening-of-c2c12-mouse-myoblasts-against-compression-damage-by-mild-cyclic-compressive-stimulation
#14
Yifei Yao, Arthur Ft Mak
Deep tissue injury (DTI) is a severe kind of pressure ulcers formed by sustained deformation of muscle tissues over bony prominences. As a major clinical issue, DTI affects people with physical disabilities, and is obviously related to the load-bearing capacity of muscle cells in various in-vivo conditions. It is important to provide a preventive approach to help muscle cells from being damaged by compressive stress. In this study, we hypothesized that cyclic compressive stimulation could strengthen muscle cells against compressive damage and enhance the cell plasma membrane resealing capability...
November 16, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27882612/the-relationship-between-geometry-of-the-extensor-mechanism-of-the-knee-and-risk-of-anterior-cruciate-ligament-injury
#15
Josh C Carter, Daniel R Sturnick, Pamela M Vacek, Michael J DeSarno, Erin C Argentieri, James R Slauterbeck, Robert J Johnson, Bruce D Beynnon
The complex inter-segmental forces that are developed across an extended knee by body weight and contraction of the quadriceps muscle group transmits an anteriorly-directed force on the tibia that strain the anterior cruciate ligament (ACL). We hypothesized that a relationship exists between geometry of the knees extensor mechanism and the risk of sustaining a non-contact ACL injury. Geometry of the extensor mechanism was characterized using MRI scans of the knees of 88 subjects that suffered their first non-contact ACL injury and 88 matched control subjects with normal knees that were on the same team...
November 24, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27882328/genomic-analysis-of-a-marine-bacterium-bioinformatics-for-comparison-evaluation-and-interpretation-of-dna-sequences
#16
Bhagwan N Rekadwad, Juan M Gonzalez, Chandrahasya N Khobragade
A total of five highly related strains of an unidentified marine bacterium were analyzed through their short genome sequences (AM260709-AM260713). Genome-to-Genome Distance (GGDC) showed high similarity to Pseudoalteromonas haloplanktis (X67024). The generated unique Quick Response (QR) codes indicated no identity to other microbial species or gene sequences. Chaos Game Representation (CGR) showed the number of bases concentrated in the area. Guanine residues were highest in number followed by cytosine. Frequency of Chaos Game Representation (FCGR) indicated that CC and GG blocks have higher frequency in the sequence from the evaluated marine bacterium strains...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27878999/experimental-evaluation-of-multiscale-tendon-mechanics
#17
REVIEW
Fei Fang, Spencer P Lake
Tendon's primary function is a mechanical link between muscle and bone. The hierarchical structure of tendon and specific compositional constituents are believed to be critical for proper mechanical function. With increased appreciation for tendon importance and the development of various technological advances, this review paper summarizes recent experimental approaches that have been used to study multiscale tendon mechanics, includes an overview of studies that have evaluated the role of specific tissue constituents, and also proposes challenges/opportunities facing tendon study...
November 23, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27878409/analysis-of-the-functional-muscle-bone-unit-of-the-forearm-in-patients-with-phenylketonuria-by-peripheral-quantitative-computed-tomography
#18
Daniela Choukair, Carolin Kneppo, Reinhard Feneberg, Eckhard Schönau, Martin Lindner, Stefan Kölker, Georg F Hoffmann, Burkhard Tönshoff
Bone disease in patients with phenylketonuria (PKU) is incompletely characterized. We therefore analyzed, in a cross-sectional study radius macroscopic bone architecture and forearm muscle size by peripheral quantitative computed tomography (pQCT) and muscle strength by hand dynamometry in a large cohort (n = 56) of adolescent and adult patients with PKU aged 26.0 ± 8.9 (range, 11.8-41.5) years. Data were compared with a reference population (n = 700) from the DONALD study using identical methodology...
November 22, 2016: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/27875560/denervation-induced-activation-of-the-standard-proteasome-and-immunoproteasome
#19
Haiming M Liu, Deborah A Ferrington, Cory W Baumann, LaDora V Thompson
The standard 26S proteasome is responsible for the majority of myofibrillar protein degradation leading to muscle atrophy. The immunoproteasome is an inducible form of the proteasome. While its function has been linked to conditions of atrophy, its contribution to muscle proteolysis remains unclear. Therefore, the purpose of this study was to determine if the immunoproteasome plays a role in skeletal muscle atrophy induced by denervation. Adult male C57BL/6 wild type (WT) and immunoproteasome knockout lmp7-/-/mecl-1-/- (L7M1) mice underwent tibial nerve transection on the left hindlimb for either 7 or 14 days, while control mice did not undergo surgery...
2016: PloS One
https://www.readbyqxmd.com/read/27875493/acute-lumbar-paraspinal-myonecrosis-in-football-players-with-sickle-cell-trait-a-case-series
#20
E Randy Eichner, Brock Schnebel, Scott Anderson, James R Clugston, Heath Hale, Charlie Michaudet, John M Small
We report 6 cases of a novel syndrome of acute, exertional low back pain (LBP) in football players, 5 in college and one in the National Football League (NFL). All 6 are African-Americans with sickle cell trait (SCT). The acute LBP is severe and can be disabling, and the condition can be confused with muscle strain, discogenic pain, stress fracture, or other problems in athletes. Our evidence shows that this syndrome is caused by lumbar paraspinal myonecrosis (LPSMN), which likely often contributes to the lumbar paraspinal compartment syndrome...
November 21, 2016: Medicine and Science in Sports and Exercise
keyword
keyword
34140
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"