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https://www.readbyqxmd.com/read/28644883/effects-of-dietary-inclusion-of-high-concentrations-of-crude-glycerin-on-meat-quality-and-fatty-acid-profile-of-feedlot-fed-nellore-bulls
#1
Eric H C B van Cleef, André P D'Áurea, Vanessa R Fávaro, Flavia O S van Cleef, Robson S Barducci, Marco T C Almeida, Otávio R Machado Neto, Jane M B Ezequiel
Crude glycerin, the main by-product of biodiesel production, can replace dietary energy sources, such as corn. The objective of this study was to evaluate the inclusion of up to 30% of crude glycerin in dry matter (DM) of the total diets, and its effects on meat quality parameters of feedlot Nellore bulls. Thirty animals (227.7 ± 23.8 kg body weight; 18 months old) were housed in individual pens and fed 5 experimental diets, containing 0, 7.5, 15, 22.5 or 30% crude glycerin (DM basis). After 103 d (21 d adaptation) animals were slaughtered and the Longissimus muscle was collected...
2017: PloS One
https://www.readbyqxmd.com/read/28644248/are-ultrasonographic-measures-of-cervical-flexor-muscles-correlated-with-flexion-endurance-in-chronic-neck-pain-and-asymptomatic-participants
#2
Leila Ghamkhar, Amir Hossein Kahlaee
OBJECTIVE: This study compared the relationship between some clinical factors and the size of neck flexors in participants with or without chronic neck pain. DESIGN: In this case-control study, the correlation between flexor endurance capacity as well as thickness, cross-section area, and shape ratio of longus colli/capitis and sternocleidomastoid muscles were examined in 30 patients with chronic neck pain and 30 asymptomatic participants. RESULTS: The patients showed lower flexor endurance (P = 0...
June 21, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28640861/inhibition-of-nf-%C3%AE%C2%BAb-improves-the-stress-resistance-and-myogenic-differentiation-of-mdspcs-isolated-from-naturally-aged-mice
#3
Jonathan D Proto, Aiping Lu, Akaitz Dorronsoro, Alex Scibetta, Paul D Robbins, Laura J Niedernhofer, Johnny Huard
A decline in the regenerative capacity of adult stem cells with aging is well documented. As a result of this decline, the efficacy of autologous stem cell therapies is likely to decline with increasing donor age. In these cases, strategies to restore the function of aged stem cells would have clinical utility. Globally, the transcription factor NF-κB is up-regulated in aged tissues. Given the negative role that NF-κB plays in myogenesis, we investigated whether the age-related decline in the function of muscle-derived stem/progenitor cells (MDSPCs) could be improved by inhibition of NF-κB...
2017: PloS One
https://www.readbyqxmd.com/read/28639297/autophagy-activation-not-pgc-1%C3%AE-may-mediate-exercise-induced-improvements-in-glucose-handling-during-diet-induced-obesity
#4
Megan E Rosa-Caldwell, Jacob L Brown, David E Lee, Thomas A Blackwell, Kyle W Turner, Lemuel A Brown, Richard A Perry, Wesley S Haynie, Tyrone A Washington, Nicholas P Greene
Prevalence of glucose intolerance is at alarming levels. Efforts to promote mitochondrial biogenesis through PGC-1α to mitigate glucose intolerance have been controversial. However, physical activity remains a primary means to alleviate the condition. PURPOSE: To determine combined effects of muscle-specific overexpression of PGC-1α and physical activity on glucose handling during diet-induced obesity. METHODS: Wild-type (WT, ∼20) and PGC-1α muscle transgenic (MCK-PGC-1α, ∼20) mice were given Western diet (WD) at 8 wks age and allowed to consume food ab libitum throughout the study...
June 21, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28638346/micrornas-in-muscle-characterizing-the-powerlifter-phenotype
#5
Randall F D'Souza, Thomas Bjørnsen, Nina Zeng, Kirsten M M Aasen, Truls Raastad, David Cameron-Smith, Cameron J Mitchell
Powerlifters are the epitome of muscular adaptation and are able to generate extreme forces. The molecular mechanisms underpinning the significant capacity for force generation and hypertrophy are not fully elucidated. MicroRNAs (miRs) are short non-coding RNA sequences that control gene expression via promotion of transcript breakdown and/or translational inhibition. Differences in basal miR expression may partially account for phenotypic differences in muscle mass and function between powerlifters and untrained age-matched controls...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28637129/patient-reported-outcomes-in-gne-myopathy-incorporating-a-valid-assessment-of-physical-function-in-a-rare-disease
#6
Christina Slota, Margaret Bevans, Li Yang, Joseph Shrader, Galen Joe, Nuria Carrillo
BACKGROUND: The aim of this analysis was to evaluate the psychometric properties of three patient reported outcome (PRO) measures characterizing physical function in GNE myopathy: the Human Activity Profile, the Inclusion Body Myositis Functional Rating Scale, and the Activities-specific Balance Confidence scale. METHODS: This analysis used data from 35 GNE myopathy subjects participating in a natural history study. For construct validity, correlational and known-group analyses were between the PROs and physical assessments...
February 7, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28636505/the-effect-of-aerobic-interval-training-and-continuous-training-on-exercise-capacity-and-its-determinants
#7
Nele Pattyn, Paul J Beckers, Véronique A Cornelissen, Ellen Coeckelberghs, Catherine De Maeyer, Geert Frederix, Kaatje Goetschalckx, Nadine Possemiers, Dirk Schepers, Emeline M Van Craenenbroeck, Kurt Wuyts, Viviane M Conraads, Luc Vanhees
Objective We aimed to investigate (1) the effects of aerobic interval training (AIT) and aerobic continuous training (ACT) on (sub)maximal exercise measures and its determinants including endothelial function, muscle strength and cardiac autonomic function, and (2) the relationship between exercise capacity and these determinants. Methods Two-hundred coronary artery disease (CAD) patients (58.4 ± 9.1 years) were randomized to AIT or ACT for 12 weeks. All patients performed a cardiopulmonary exercise test and endothelial function measurements before and after the intervention; a subpopulation underwent muscle strength and heart rate variability (HRV) assessments...
March 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28634926/aging-effect-on-the-instrumented-timed-up-and-go-test-variables-in-nursing-home-women-aged-80-93%C3%A2-years
#8
Ryszard Zarzeczny, Agnieszka Nawrat-Szołtysik, Anna Polak, Jakub Maliszewski, Adam Kiełtyka, Beata Matyja, Magdalena Dudek, Joanna Zborowska, Adam Wajdman
Although the total "Timed-Up-and Go" test (TUG) performance time can characterize an age-related decline of general mobility, this result alone doesn't give any detailed information about the test subtasks. The primary objective of the study was to identify in nursing home women a variable extracted from instrumented TUG (iTUG) that is the best predictor of age. The secondary objective was to assess whether this variable is associated with the results of the isometric knee extension peak torque (IKEPT); lower limb strength measured by the 30-s chair stand test (30sCST), and walking capacity measured by the 6-min walk test (6MWT)...
June 20, 2017: Biogerontology
https://www.readbyqxmd.com/read/28633832/effects-of-ultrasound-on-the-beef-structure-and-water-distribution-during-curing-through-protein-degradation-and-modification
#9
Da-Cheng Kang, Xue-Qin Gao, Qing-Feng Ge, Guang-Hong Zhou, Wan-Gang Zhang
The objective of this study was to explore the mechanisms of power ultrasound (PUS, 150 and 300W) and treatment time (30 and 120min) on the water-holding capacity (WHC) and tenderness of beef during curing. Beef muscle at 48h post mortem was subjected to PUS treatment at a frequency of 20kHz. Analysis of compression loss and shear force showed that PUS-assisted curing significantly increased the WHC and the tenderness of beef compared to static brining (p<0.05). According to the analysis of LF-NMR, PUS treatment could increase the P21 values which indicated an improvement in water-binding ability of beef muscle...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28631679/-the-comparative-assessment-of-the-vocal-function-in-the-professional-voice-users-and-non-occupational-voice-users-in-the-late-adulthood
#10
O G Pavlikhin, S G Romanenko, D I Krasnikova, E V Lesogorova, V S Yakovlev
The objective of the present study was to evaluate the clinical and functional condition of the voice apparatus in the elderly patients and to elaborate recommendations for the prevention of disturbances of the vocal function in the professional voice users. This comprehensive study involved 95 patients including the active professional voice users (n=48) and 45 non-occupational voice users at the age from 61 to 82 years with the employment history varying from 32 to 51 years. The study was designed to obtain the voice characteristics by means of the subjective auditory assessment, microlaryngoscopy, video laryngostroboscopy, determination of maximum phonation time (MPT), and computer-assisted acoustic analysis of the voice with the use of the MDVP Kay Pentaxy system...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28629794/uncoupling-effect-of-palmitate-is-exacerbated-in-skeletal-muscle-mitochondria-of-sea-acclimatized-king-penguins-aptenodytes-patagonicus
#11
Benjamin Rey, Claude Duchamp, Damien Roussel
In king penguin juveniles, the environmental transition from a terrestrial to a marine habitat, occurring at fledging, drastically stimulates lipid catabolism and the remodelling of muscle mitochondria to sustain extensive swimming activity and thermoregulation in the cold circumpolar oceans. However, the exact nature of these mechanisms remains only partially resolved. Here we investigated, in vitro, the uncoupling effect of increasing doses of fatty acids in pectoralis muscle intermyofibrillar mitochondria isolated, either from terrestrial never-immersed or experimentally cold water immersed pre-fledging king penguins or from sea-acclimatized fledged penguins...
June 16, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28627770/electrochemically-powered-energy-conserving-carbon-nanotube-artificial-muscles
#12
Jae Ah Lee, Na Li, Carter S Haines, Keon Jung Kim, Xavier Lepró, Raquel Ovalle-Robles, Seon Jeong Kim, Ray H Baughman
While artificial muscle yarns and fibers are potentially important for many applications, the combination of large strokes, high gravimetric work capacities, short cycle times, and high efficiencies are not realized for these fibers. This paper demonstrates here electrochemically powered carbon nanotube yarn muscles that provide tensile contraction as high as 16.5%, which is 12.7 times higher than previously obtained. These electrochemical muscles can deliver a contractile energy conversion efficiency of 5...
June 19, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28626855/a-scaling-method-to-individualise-muscle-force-capacities-in-musculoskeletal-models-of-the-hand-and-wrist-using-isometric-strength-measurements
#13
Benjamin Goislard de Monsabert, G Rao, A Gay, E Berton, L Vigouroux
Because the force-generating capacities of muscles are currently estimated using anatomical data obtained from cadaver specimens, hand musculoskeletal models provide only a limited representation of the specific features of individual subjects. A scaling method is proposed to individualise muscle capacities using dynamometric measurements and electromyography. For each subject, a strength profile was first defined by measuring net moments during eight maximum isometric contractions about the wrist and metacarpophalangeal joints...
June 19, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28625916/er-stress-disturbs-sr-er-mitochondria-ca-2-transfer-implications-in-duchenne-muscular-dystrophy
#14
Marion Pauly, Claire Angebault-Prouteau, Haikel Dridi, Cécile Notarnicola, Valérie Scheuermann, Alain Lacampagne, Stefan Matecki, Jérémy Fauconnier
Besides its role in calcium (Ca(2+)) homeostasis, the sarco-endoplamic reticulum (SR/ER) controls protein folding and is tethered to mitochondria.Under pathophysiological conditions the unfolded protein response (UPR) is associated with disturbance in SR/ER-mitochondria crosstalk. Here, we investigated whether ER stress altered SR/ER-mitochondria links, Ca(2+) handling and muscle damage in WT (Wild Type) and mdx mice, the murine model of Duchenne Muscular Dystrophy (DMD). In WT mice, the SR/ER-mitochondria links were decreased in isolated FDB muscle fibers after injection of ER stress activator tunicamycin (TM)...
June 15, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28623613/assessment-of-metabolic-flexibility-by-means-of-measuring-blood-lactate-fat-and-carbohydrate-oxidation-responses-to-exercise-in-professional-endurance-athletes-and-less-fit-individuals
#15
Iñigo San-Millán, George A Brooks
BACKGROUND: Increased muscle mitochondrial mass is characteristic of elite professional endurance athletes (PAs), whereas increased blood lactate levels (lactatemia) at the same absolute submaximal exercise intensities and decreased mitochondrial oxidative capacity are characteristics of individuals with low aerobic power. In contrast to PAs, patients with metabolic syndrome (MtS) are characterized by a decreased capacity to oxidize lipids and by early transition from fat to carbohydrate oxidation (FATox/CHOox), as well as elevated blood lactate concentration [La(-)] as exercise power output (PO) increases, a condition termed 'metabolic inflexibility'...
June 16, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28623559/ifn-%C3%AE-induced-reactive-oxygen-species-and-mitochondrial-damage-contribute-to-muscle-impairment-and-inflammation-maintenance-in-dermatomyositis
#16
Alain Meyer, Gilles Laverny, Yves Allenbach, Elise Grelet, Vanessa Ueberschlag, Andoni Echaniz-Laguna, Béatrice Lannes, Ghada Alsaleh, Anne Laure Charles, François Singh, Joffrey Zoll, Evelyne Lonsdorfer, François Maurier, Olivier Boyer, Jacques-Eric Gottenberg, Anne Sophie Nicot, Jocelyn Laporte, Olivier Benveniste, Daniel Metzger, Jean Sibilia, Bernard Geny
Dermatomyositis (DM) is an autoimmune disease associated with enhanced type I interferon (IFN) signalling in skeletal muscle, but the mechanisms underlying muscle dysfunction and inflammation perpetuation remain unknown. Transcriptomic analysis of early untreated DM muscles revealed that the main cluster of down-regulated genes was mitochondria-related. Histochemical, electron microscopy, and in situ oxygraphy analysis showed mitochondrial abnormalities, including increased reactive oxygen species (ROS) production and decreased respiration, which was correlated with low exercise capacities and a type I IFN signature...
June 16, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28621617/intrathoracic-meningocele-associated-with-neurofibromatosis-type-1-and-a-novel-technique-for-surgical-repair-case-report
#17
Paramita Das, Tarini Goyal, Matthew A Hunt
Neurofibromatosis Type 1 (NF1) is a neurocutaneous disorder that can have associated spinal abnormalities related to both bone and dural dysplasia. Thoracic meningoceles are one spine anomaly associated with NF1, although they are a fairly uncommon pathology. Surgical techniques to treat these meningoceles, usually undertaken only when the patient is symptomatic, are targeted at decreasing the size of the protrusion and improving lung capacity. Surgical interventions discussed in the literature include shunting the pseudomeningocele, primary repair with laminectomy, thoracoscopic plication, and reinforcement of the closure with cement, muscle, or fascia...
June 16, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28621488/effects-of-intradialytic-neuromuscular-electrical-stimulation-on-strength-and-muscle-architecture-in-patients-with-chronic-kidney-failure-randomized-clinical-trial
#18
Jociane Schardong, Thiago Dipp, Camila Bassani Bozzeto, Marília Godoy da Silva, Gabriela Leivas Baldissera, Raíssa de Castro Ribeiro, Bruna Pan Valdemarca, Alexandre Severo do Pinho, Graciele Sbruzzi, Rodrigo Della Méa Plentz
This study aimed to evaluate the effects of neuromuscular electrical stimulation (NMES) on muscle strength and architecture, functional capacity, and endothelial function in patients with chronic kidney failure (CKF) on hemodialysis (HD). Twenty-one patients with CKF on HD were randomized into a control group (CG; n = 10) and neuromuscular electrical stimulation group (NMESG; n = 11) who received NMES in the quadriceps muscle for 8 weeks, 3 times/week (20-34 min) during HD sessions. The muscle strength of the lower limbs was evaluated by dynamometry and sit-and-stand test (SST); muscle architecture through ultrasonography; functional capacity by the distance covered in a 6-min walk test and the endothelial function by flow-mediated dilatation technique of the brachial artery...
June 16, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28620932/fiber-type-composition-of-the-palmaris-brevis-muscle-implications-for-palmar-function
#19
Colin W Moore, Tyler S Beveridge, Charles L Rice
The palmaris brevis (PB) is a small muscle of variant morphology located on the ulnar aspect of the palm, superficial to the hypothenar eminence. Functionally, the PB has been proposed to protect the neurovasculature of the ulnar canal from compressive forces during repetitive or intermittent trauma associated with grasping. Although PB function has been inferred from cadaveric observations, it is unknown whether it has the contractile capacity and fatigue-resistance necessary to withstand these functional demands...
June 16, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28620483/utilisation-of-supplemented-l-carnitine-for-fuel-efficiency-as-an-antioxidant-and-for-muscle-recovery-in-labrador-retrievers
#20
Jessica L Varney, J W Fowler, W C Gilbert, C N Coon
The primary goal was to investigate the effects of l-carnitine on fuel efficiency, as an antioxidant, and for muscle recovery in Labrador retrievers. Dogs were split into two groups, with one group being supplemented with 250 mg/d of Carniking™ l-carnitine powder. Two experiments (Expt 1 and Expt 2) were performed over a 2-year period which included running programmes, activity monitoring, body composition scans and evaluation of recovery using biomarkers. Each experiment differed slightly in dog number and design: fifty-six v...
2017: Journal of Nutritional Science
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