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European Journal of Translational Myology

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https://www.readbyqxmd.com/read/28458809/maintaining-motor-units-into-old-age-running-the-final-common-pathway
#1
Geoffrey A Power, Brian H Dalton, Kevin J Gilmore, Matti D Allen, Timothy J Doherty, Charles L Rice
Invited Letter to the Editor. This article is a commentary on the recently published manuscript "Use it or lose it: tonic activity of slow motoneurons promotes their survival and preferentially increases slow fiber-type groupings in muscles of old lifelong recreational sportsmen". Mosole S, Carraro U, Kern H, Loefler S, Zampieri S. Use it or lose it: tonic activity of slow motoneurons promotes their survival and preferentially increases slow fiber-type groupings in muscles of old lifelong recreational sportsmen...
February 24, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28458808/of-faeces-and-sweat-how-much-a-mouse-is-willing-to-run-having-a-hard-time-measuring-spontaneous-physical-activity-in-different-mouse-sub-strains
#2
Dario Coletti, Sergio Adamo, Viviana Moresi
Invited Letter to the Editor. Physical activity has multiple beneficial effects in the physiology and pathology of the organism. In particular, we and other groups have shown that running counteracts cancer cachexia in both humans and rodents. The latter are prone to exercise in wheel-equipped cages even at advanced stages of cachexia. However, when we wanted to replicate the experimental model routinely used at the University of Rome in a different laboratory (i.e. at Paris 6 University), we had to struggle with puzzling results due to unpredicted mouse behavior...
February 24, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28458807/denervation-does-not-induce-muscle-atrophy-through-oxidative-stress
#3
Eva Pigna, Emanuela Greco, Giulio Morozzi, Silvia Grottelli, Alessio Rotini, Alba Minelli, Stefania Fulle, Sergio Adamo, Rosa Mancinelli, Ilaria Bellezza, Viviana Moresi
Denervation leads to the activation of the catabolic pathways, such as the ubiquitin-proteasome and autophagy, resulting in skeletal muscle atrophy and weakness. Furthermore, denervation induces oxidative stress in skeletal muscle, which is thought to contribute to the induction of skeletal muscle atrophy. Several muscle diseases are characterized by denervation, but the molecular pathways contributing to muscle atrophy have been only partially described. Our study delineates the kinetics of activation of oxidative stress response in skeletal muscle following denervation...
February 24, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28458806/the-contribution-of-neuromuscular-stimulation-in-elucidating-muscle-plasticity-revisited
#4
REVIEW
Dirk Pette, Gerta Vrbová
Studies carried out during the past 45 years on the effects of chronic low-frequency stimulation on skeletal muscle have revealed a multiplicity of adaptive changes of muscle fibres in response to increased activity. As reflected by induced changes in the metabolic properties, protein profiles of the contractile machinery and elements of the Ca(2+)-regulatory system, all essential components of the muscle fibre undergo pronounced changes in their properties that ultimately lead to their reversible transformation from fast-to-slow phenotype...
February 24, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28458805/the-tongue-mandible-hyoid-system
#5
Giuseppe Messina
The craniocervical-mandibular system works in harmony and allows different functional tasks as the postural control of the cervical region. This system is formed by the temporomandibular joint, the masticatory muscles and ligaments connecting the temporomandibular joint and the cervical region. It has been seen to affect human posture, and many disorders of the temporomandibular joints may affect this functional arrangement. Notwithstanding this system considered as a functional arrangement, may offer various clinical explanations, it does not hold anatomical connections with the posterior region of the cranium, thus it should not be refered to as a craniocervical arrangement...
February 24, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28458804/nutrition-pharmacological-and-training-strategies-adopted-by-six-bodybuilders-case-report-and-critical-review
#6
Paulo Gentil, Claudio Andre Barbosa de Lira, Antonio Paoli, José Alexandre Barbosa Dos Santos, Roberto Deivide Teixeira da Silva, José Romulo Pereira Junior, Edson Pereira da Silva, Rodrigo Ferro Magosso
The purpose of this study was to report and analyze the practices adopted by bodybuilders in light of scientific evidence and to propose evidence-based alternatives. Six (four male and two female) bodybuilders and their coaches were directly interviewed. According to the reports, the quantity of anabolic steroids used by the men was 500-750 mg/week during the bulking phase and 720-1160 mg during the cutting phase. The values for women were 400 and 740 mg, respectively. The participants also used ephedrine and hydrochlorothiazide during the cutting phase...
February 24, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28458803/neuromuscular-disorder-as-initial-manifestation-of-secondary-hyperparathyroidism-a-case-report
#7
Karim Hajjar, Tim Hagenacker
This case report describes a young woman who presented with slowly progressing weakness of the proximal limb muscles and slight decrease of muscle tone but otherwise unremarkable neurological history. Diagnostic workup revealed fatty degeneration of the girdle muscles and an excessive increase of the parathyroid hormone as a result of severe vitamin D deficiency. Secondary hyperparathyroidism was diagnosed, and neurological deficits resolved after treatment of the underlying endocrinopathy.
February 24, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078075/a-design-method-for-fes-bone-health-therapy-in-sci
#8
Brian Andrews, James Shippen, Monica Armengol, Robin Gibbons, William Holderbaum, William Harwin
FES assisted activities such as standing, walking, cycling and rowing induce forces within the leg bones and have been proposed to reduce osteoporosis in spinal cord injury (SCI). However, details of the applied mechanical stimulus for osteogenesis is often not reported. Typically, comparisons of bone density results are made after costly and time consuming clinical trials. These studies have produced inconsistent results and are subject to sample size variations. Here we propose a design process that may be used to predict the clinical outcome based on biomechanical simulation and mechano-biology...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078074/fes-in-europe-and-beyond-current-translational-research
#9
Christine Azevedo Coste, Winfried Mayr, Manfred Bijak, Antonio Musarò, Ugo Carraro
Capacity of adult neural and muscle tissues to respond to external Electrical Stimulation (ES) is the biological basis for the development and implementation of mobility impairment physiotherapy protocols and of related assistive technologies, e.g, Functional Electrical Stimulation (FES). All body tissues, however, respond to electrical stimulation and, indeed, the most successful application of FES is electrical stimulation of the heart to revert or limit effects of arrhythmias (Pace-makers and Defibrillators)...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078073/soft-encapsulation-of-flexible-electrical-stimulation-implant-challenges-and-innovations
#10
Adrien Debelle, Laura Hermans, Maxime Bosquet, Sam Dehaeck, Laurent Lonys, Benoit Scheid, Antoine Nonclercq, Anne Vanhoestenberghe
In this document we discuss the main challenges encountered when producing flexible electrical stimulation implants, and present our approach to solving them for prototype production. We include a study of the optimization of the flexible PCB design, the selection of additive manufacturing materials for the mold, and the chemical compatibility of the different materials. Our approach was tested on a flexible gastro-stimulator as part of the ENDOGES research program.
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078072/multisensor-classification-system-for-triggering-fes-in-order-to-support-voluntary-swallowing
#11
Benjamin Riebold, Holger Nahrstaedt, Corinna Schultheiss, Rainer O Seidl, Thomas Schauer
In dysphagia the ability of elevating the larynx and hyoid is usually impaired. Electromyography (EMG) and Bioimpedance (BI) measurements at the neck can be used to trigger functional electrical stimulation (FES) of swallowing related muscles. Nahrstaedt et al.(1) introduced an algorithm to trigger the stimulation in phase with the voluntary swallowing to improve the airway closure and elevation speed of the larynx and hyoid. However, due to non-swallow related movements like speaking, chewing or head turning, stimulations might be unintentionally triggered...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078071/electrical-stimulation-to-reduce-the-overload-in-upper-limbs-during-sitting-pivot-transfer-in-paraplegic-a-preliminary-study
#12
Ana Claudia G Lopes, Claudia Ochoa-Diaz, Roberto S Baptista, Lucas O Fonseca, Charles Fattal, Christine Azevedo Coste, Antônio P L Bó, Emerson Fachin-Martins
Transfer is a key ability and allows greater interact with the environment and social participation. Conversely, paraplegics have great risk of pain and injury in the upper limbs due to joint overloads during activities of daily living, like transfer. The main goal of this study is to verify if the use of functional electrical stimulation (FES) in the lower limbs of paraplegic individuals can assist the sitting pivot transfer (SPT). The secondary objective is to verify if there is a greater participation of the lower limbs during lift pivot phase...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078070/stem-cells-and-tissue-niche-two-faces-of-the-same-coin-of-muscle-regeneration
#13
Bianca Maria Scicchitano, Gigliola Sica, Antonio Musarò
Capacity of adult muscle to regenerate in response to injury stimuli represents an important homeostatic process. Regeneration is a highly coordinated program that partially recapitulates the embryonic developmental program. However, muscle regeneration is severely compromised in several pathological conditions. It is likely that the restricted tissue repair program under pathological conditions is due to either progressive loss of stem cell populations or to missing signals that limit the damaged tissues to efficiently activate a regenerative program...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078069/skeletal-muscle-microalterations-in-patients-carrying-malignant-hyperthermia-related-mutations-of-the-e-c-coupling-machinery
#14
Manuela Lavorato, Pawan K Gupta, Philip M Hopkins, Clara Franzini-Armstrong
We have compared the ultrastructure of skeletal muscle biopsies from patients that have survived a [Malignant Hyperthermia, MH] episode and siblings that test positive for MH susceptibility with those from siblings that tested negatives. The aim is to establish whether life long exposure to the MH-related mutation effects may result in subtle abnormalities even in the absence of active episodes and/or clinically detectable deficiencies. Although a specific ultrastructural signature for MH mutants cannot be demonstrated, an MH related pattern of minor alterations does exist...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078068/efficacy-of-emg-bioimpedance-triggered-functional-electrical-stimulation-on-swallowing-performance
#15
Corinna Schultheiss, Thomas Schauer, Holger Nahrstaedt, Rainer O Seidl, Jehoschua Bieler
In order to support swallowing, the efficacy of functional electrical stimulation for different stimulation settings of the submental musculature has been investigated. The stimulation was administrated at rest and synchronously to voluntary initiated swallows. The onset of a swallow was detected in real-time by a combined electromyography/ bioimpedance measurement at the neck in order to trigger the stimulation. The amplitude and speed of larynx elevation caused by the FES has been assessed by the observed change in bioimpedance whereas a reduction of bioimpedance corresponds to an increase in larynx elevation...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078067/%C3%AE-linolenic-acid-reduces-tnf-induced-apoptosis-in-c2c12-myoblasts-by-regulating-expression-of-apoptotic-proteins
#16
Felicia Carotenuto, Dario Coletti, Paolo Di Nardo, Laura Teodori
Impaired regeneration and consequent muscle wasting is a major feature of muscle degenerative diseases. Nutritional interventions such as adjuvant strategy for preventing these conditions are recently gaining increasing attention. Ingestion of n3-polyunsaturated fatty acids has been suggested as having a positive impact on muscle diseases. We recently demonstrated that a diet enriched with plant derived n3-fatty acid, α-linolenic acid (ALA), exerts potent beneficial effects in preserving skeletal muscle regeneration in models of muscle dystrophy...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078066/use-it-or-lose-it-tonic-activity-of-slow-motoneurons-promotes-their-survival-and-preferentially-increases-slow-fiber-type-groupings-in-muscles-of-old-lifelong-recreational-sportsmen
#17
Simone Mosole, Ugo Carraro, Helmut Kern, Stefan Loefler, Sandra Zampieri
Histochemistry, immuno-histochemistry, gel electrophoresis of single muscle fibers and electromyography of aging muscles and nerves suggest that: i) denervation contributes to muscle atrophy, ii) impaired mobility accelerates the process, and iii) lifelong running protects against loss of motor units. Recent corroborating results on the muscle effects of Functional Electrical Stimulation (FES) of aged muscles will be also mentioned, but we will in particular discuss how and why a lifelong increased physical activity sustains reinnervation of muscle fibers...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28078065/clinical-features-of-neuromuscular-disorders-in-patients-with-n-type-voltage-gated-calcium-channel-antibodies
#18
Andreas Totzeck, Petra Mummel, Oliver Kastrup, Tim Hagenacker
Neuromuscular junction disorders affect the pre- or postsynaptic nerve to muscle transmission due to autoimmune antibodies. Members of the group like myasthenia gravis and Lambert-Eaton syndrome have pathophysiologically distinct characteristics. However, in practice, distinction may be difficult. We present a series of three patients with a myasthenic syndrome, dropped-head syndrome, bulbar and respiratory muscle weakness and positive testing for anti-N-type voltage-gated calcium channel antibodies. In two cases anti-acetylcholin receptor antibodies were elevated, anti-P/Q-type voltage-gated calcium channel antibodies were negative...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/27990247/bci-triggered-functional-electrical-stimulation-therapy-for-upper-limb
#19
Cesar Marquez-Chin, Aaron Marquis, Milos R Popovic
We present here the integration of brain-computer interfacing (BCI) technology with functional electrical stimulation therapy to restore voluntary function. The system was tested with a single man with chronic (6 years) severe left hemiplegia resulting from a stroke. The BCI, implemented as a simple "brain-switch" activated by power decreases in the 18 Hz - 28 Hz frequency range of the participant's electroencephalograpic signals, triggered a neuroprosthesis designed to facilitate forward reaching, reaching to the mouth, and lateral reaching movements...
June 13, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/27990246/feasibility-of-using-lokomat-combined-with-functional-electrical-stimulation-for-the-rehabilitation-of-foot-drop
#20
Christian B Laursen, Jørgen F Nielsen, Ole K Andersen, Erika G Spaich
This study investigated the clinical feasibility of combining the electromechanical gait trainer Lokomat with functional electrical therapy (LokoFET), stimulating the common peroneal nerve during the swing phase of the gait cycle to correct foot drop as an integrated part of gait therapy. Five patients with different acquired brain injuries trained with LokoFET 2-3 times a week for 3-4 weeks. Pre- and post-intervention evaluations were performed to quantify neurophysiological changes related to the patients' foot drop impairment during the swing phase of the gait cycle...
June 13, 2016: European Journal of Translational Myology
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