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https://www.readbyqxmd.com/read/28644567/reliability-of-surface-emg-measurements-from-the-suprahyoid-muscle-complex
#1
Mohit Kothari, Peter William Stubbs, Asger Roer Pedersen, Jim Jensen, Jørgen Feldbaek Nielsen
BACKGROUND: Assessment of swallowing musculature using motor evoked potentials (MEPs) can be used to evaluate neural pathways. However, recording of the swallowing musculature is often invasive, uncomfortable and unrealistic in normal clinical practise. OBJECTIVE: To investigate the possibility of using the suprahyoid muscle complex (SMC) using surface electromyography (sEMG) to assess changes to neural pathways by determining the reliability of measurements in healthy participants over days...
June 23, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28644430/the-clinical-landscape-for-sma-in-a-new-therapeutic-era
#2
REVIEW
K Talbot, E F Tizzano
Despite significant advances in basic research, the treatment of degenerative diseases of the nervous system remains one of the greatest challenges for translational medicine. The childhood onset motor neuron disorder spinal muscular atrophy (SMA) has been viewed as one of the more tractable targets for molecular therapy, due to a detailed understanding of the molecular genetic basis of the disease. In SMA, inactivating mutations in the SMN1 gene can be partially compensated for by limited expression of SMN protein from a variable number of copies of the SMN2 gene, which provides both a molecular explanation for phenotypic severity and a target for therapy...
June 23, 2017: Gene Therapy
https://www.readbyqxmd.com/read/28642873/serum-amyloid-a-induces-a-vascular-smooth-muscle-cell-phenotype-switch-through-the-p38-mapk-signaling-pathway
#3
Xincai Zhang, Jinqin Chen, Shixun Wang
Atherosclerosis is an important pathological condition which is accompanied by a vascular smooth muscle cell (VSMC) phenotype switch toward a synthetic phenotype. As an acute-phase protein, Serum Amyloid A (SAA) is thought to have a close relationship to atherosclerosis development. However, no study has investigated the direct effect of SAA on the VSMC phenotype switch, as well as the underlying mechanisms. The purpose of our study was to explore the effect of SAA on the VSMC phenotype switch and the potential mechanisms involved...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28641503/embolization-of-a-large-progressive-symptomatic-desmoid-tumor-in-the-rectus-muscle-of-a-female-patient-with-multiple-sclerosis-a-case-report
#4
I Diebels, M Blockhuys, P Willemsen, Y Pirenne
INTRODUCTION: Desmoid tumors are benign tumors, yet can lead to significant morbidity due to aggressive local expansions. Treatment starts with a wait-and-see policy, however, more aggressive treatments like broad margin resection surgery might be necessary in case of tumor progression. PATIENTS AND METHODS: We report the case of a 26-year-old female with a symptomatic desmoid tumor in the left rectus muscle. The initial wait-and-see policy led to an increase in tumor size and progression of symptoms...
June 22, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28641241/influence-of-shoulder-kinematic-estimate-on-joint-and-muscle-mechanics-predicted-by-musculoskeletal-model
#5
Yoann Blache, Mickael Begon
Little information is available in the existing literature regarding the influence of the scapular kinematic estimate method on musculoskeletal analysis. This study aimed to assess the propagation of errors due to the method used for scapular kinematics reconstruction in the workflow of musculoskeletal modeling (joint kinematics, joint torques, muscle force and joint reaction force) in shoulder and upper-limb movements. Two participants performed functional (arm elevation and rotation), daily life (eating and reaching pants pockets) and sports movements (a simulated throwing maneuver)...
June 15, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28641185/mechanistic-understanding-of-low-methylmercury-bioaccessibility-from-crayfish-procambarus-clarkii-muscle-tissue
#6
Qian Peng, Ben K Greenfield, Fei Dang, Yu Gong, Wenbo Bu, Huan Zhong
Recent research indicates that dietary exposure to mercury and other metals from crayfish consumption poses a human health concern, particularly in regions with high crayfish-consuming populations. To better understand consumption risk from methylmercury (MeHg), we quantified MeHg bioaccessibility in edible tail muscle of cooked red swamp crayfish (Procambarus clarkii, collected from seven cities in China), versus cooked fillet tissue of two finfish species: yellow croaker (Larimichthys polyactis) and snakehead (Channa argus)...
June 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28641068/centric-relation-intercuspal-position-discrepancy-and-its-relationship-with-temporomandibular-disorders-a-systematic-review
#7
Antonio Jiménez-Silva, Julio Tobar-Reyes, Sheilah Vivanco-Coke, Eduardo Pastén-Castro, Hernán Palomino-Montenegro
OBJECTIVE: The objective of this study is to assess the relationship between centric relation-intercuspal position discrepancy (CR-ICP discrepancy) and temporomandibular disorders (TMDs), by systematically reviewing the literature. MATERIALS AND METHODS: A systematic research was performed between 1960 and 2016 based on electronic databases: PubMed, Cochrane Library, Medline, Embase, Scopus, EBSCOhost, BIREME, Lilacs and Scielo, including all languages. Analytical observational clinical studies were identified...
June 22, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28641044/the-effects-of-short-versus-long-inter-set-rest-intervals-in-resistance-training-on-measures-of-muscle-hypertrophy-a-systematic-review
#8
Jozo Grgic, Bruno Lazinica, Pavle Mikulic, James W Krieger, Brad Jon Schoenfeld
Although the effects of short versus long inter-set rest intervals in resistance training on measures of muscle hypertrophy have been investigated in several studies, the findings are equivocal and the practical implications remain unclear. In an attempt to provide clarity on the topic, we performed a systematic literature search of PubMed/MEDLINE, Scopus, Web of Science, Cochrane Library, and Physiotherapy Evidence Database (PEDro) electronic databases. Six studies were found to have met the inclusion criteria: (a) an experimental trial published in an English-language peer-reviewed journal; (b) the study compared the use of short (≤60 s) to long (>60 s) inter-set rest intervals in a traditional dynamic resistance exercise using both concentric and eccentric muscle actions, with the only difference in resistance training among groups being the inter-set rest interval duration; (c) at least one method of measuring changes in muscle mass was used in the study; (d) the study lasted for a minimum of four weeks, employed a training frequency of ≥2 resistance training days per week, and (e) used human participants without known chronic disease or injury...
June 22, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28640772/the-effect-of-a-carbohydrate-mouth-rinse-on-upper-body-muscular-strength-and-endurance
#9
James E Dunkin, Shaun M Phillips
Dunkin, JE and Phillips, SM. The effect of a carbohydrate mouth rinse on upper-body muscular strength and endurance. J Strength Cond Res 31(7): 1948-1953, 2017-Carbohydrate (CHO) mouth rinsing rapidly increases corticomotor output and maximal muscle force production, which could enhance muscular strength and endurance during resistance exercise. However, previous research has found no effect of CHO rinsing on muscular strength or endurance. The current study altered the CHO rinse composition and frequency and the muscular endurance test to further investigate the effects of a CHO mouth rinse on upper-body muscular strength and endurance...
July 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28640447/role-of-serca-pump-in-muscle-thermogenesis-and-metabolism
#10
Muthu Periasamy, Santosh Kumar Maurya, Sanjaya Kumar Sahoo, Sushant Singh, Sanjaya Kumar Sahoo, Felipe C G Reis, Naresh Chandra Bal
In muscle cells, the sarcoplasmic reticulum (SR) not only acts as a Ca2+ store, but also regulates the contractile characteristics of the muscle. Ca2+ release from the SR is the primary mechanism for activating muscle contraction and reuptake of Ca2+ by the sarcoplasmic reticulum Ca2+ ATPase (SERCA) pump causes muscle relaxation. The SERCA pump isoforms are encoded by three genes, SERCA 1, 2, and 3, which are differentially expressed in muscle and determine SR Ca2+ dynamics by affecting the rate and amount of Ca2+ uptake, thereby affecting SR store and release of Ca2+ in muscle...
June 18, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28639888/transgelin-2-a-potential-oncogenic-factor
#11
Ti Meng, Leichao Liu, Ruifang Hao, Siying Chen, Yalin Dong
Actin-binding proteins are proteins that could bind to actin or actin fibers. As a member of actin-binding proteins, Transgelin-2 is expressed in smooth muscle cells and non-smooth muscle cells, and its gene, TAGLN2, is differently expressed in all cells and tissues. The deregulation of Transgelin-2 is considered to be correlated with progression of many kinds of diseases, especially the development of malignant tumors, such as invasion, metastasis, and resistance, yet the function and mechanism of action of Transgelin-2 remain elusive...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28639874/compression-treatment-of-pelvic-congestion-syndrome
#12
S G Gavrilov, A V Karalkin, O O Turischeva
Aim To study the influence of compression treatment on clinical manifestations and venous hemodynamics of the pelvis in patients with pelvic congestion syndrome. Materials and methods A prospective study of the various options and modes of compression treatment was carried out and included 74 patients with pelvic congestion syndrome in 2008-2015. The patients were divided into three groups. The first group consisted of 48 patients with symptoms of pelvic congestion syndrome and chronic pelvic pain. They used Class II compression shorts...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28639596/guillain-barre-syndrome-demographics-clinical-profile-seasonal-variation-in-a-tertiary-care-centre-of-central-india
#13
Manisha Shrivastava, Shah Nehal, Navaid Seema
BACKGROUND & OBJECTIVES: Guillain-Barre syndrome (GBS) is an autoimmune disease and a recognized cause of generalized progressive paralysis worldwide. The present study was aimed to document the clinical findings, demographics and seasonal variations amongst the patients with GBS during the hospital stay. METHODS: A retrospective analysis of 66 referred cases diagnosed as GBS was conducted. Medical records and the data related to age, sex, antecedent illness, duration of symptoms before admission, muscle power graded by the Medical Research Council scale, functional scores, details of Intensive Care Unit complications and need for ventilation were obtained...
February 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28639532/diminished-abductor-muscular-strength-in-patients-with-valgus-impacted-femoral-neck-fractures-treated-by-internal-fixation-clinical-study-and-biomechanical-considerations
#14
Mitsuaki Noda, Yasuhiro Saegusa, Masayasu Takahashi, Yuichi Kuroda, Yuma Takada, Chihiro Yoshikawa, Mimami Wakabayashi, Kazuhiko Adachi, Yukiko Nakamura
BACKGROUND: Valgus-impacted femoral neck fractures treated with internal fixation occasionally result in unsatisfactory postoperative locomotive function, partially due to muscle shortening and a decrease in the moment arm. This study quantifies the degree of diminished abduction strength both clinically and biomechanically. METHODS: Fifteen patients were enrolled in this study. Twelve patients with fracture healed in valgus-impacted position were further evaluated...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28638928/-fat-deposition-in-skeletal-muscle-and-its-regulation
#15
Li-Fang Zheng, Pei-Jie Chen, Yong-Zhan Zhou, Wei-Hua Xiao
Under normal condition, there are a few lipid droplets in skeletal muscle. But in skeletal muscle acute injury, muscular dystrophy, muscle atrophy, obesity, diabetes and other pathological conditions, the fat deposition in skeletal muscle increases, which implicate that the fat deposition may play an important role in the pathogenesis of these diseases. However, the mechanisms of development and regulation of fat deposition in skeletal muscle are not clear. Clarifying the key signaling pathways and regulatory factors that affect fat deposition in skeletal muscle, and exploring new ways to improve the fat deposition in skeletal muscle will not only help to deepen our understanding of the pathogenesis of these diseases, but also provide new ideas for the treatment of these diseases...
June 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28638875/whole-body-vibration-improves-attention-and-motor-performance-in-mice-depending-on-the-duration-of-the-whole-body-vibration-session
#16
Jan N Keijser, Marieke J G van Heuvelen, Csaba Nyakas, Kata Tóth, Regien G Schoemaker, Edzard Zeinstra, Eddy A van der Zee
BACKGROUND: Whole body vibration (WBV) is a form of physical stimulation via mechanical vibrations transmitted to a subject. It is assumed that WBV induces sensory stimulation in cortical brain regions through the activation of skin and muscle receptors responding to the vibration. The effects of WBV on muscle strength are well described. However, little is known about the impact of WBV on the brain. Recently, it was shown in humans that WBV improves attention in an acute WBV protocol...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28637125/bilateral-movements-increase-sustained-extensor-force-in-the-paretic-arm
#17
Nyeonju Kang, James H Cauraugh
PURPOSE: Muscle weakness in the extensors poststroke is a common motor impairment. Unfortunately, research is unclear on whether bilateral movements increase extensor force production in the paretic arm. This study investigated sustained force production while stroke individuals maximally extended their wrist and fingers on their paretic arm. Specifically, we determined isometric force production in three conditions: (a) unilateral paretic arm, (b) unilateral nonparetic arm, and (c) bilateral (both arms executing the same movement simultaneously)...
February 6, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28636407/pulmonary-endpoints-in-duchenne-muscular-dystrophy-a-workshop-summary
#18
Jonathan Finder, Oscar Henry Mayer, Daniel Sheehan, Hemant Sawnani, R Ted Abresch, Joshua Benditt, David J Birnkrant, Tina Duong, Erik Henricson, Kathi Kinnett, Craig M McDonald, Anne M Connolly
Development of novel therapeutics for treatment of Duchenne muscular dystrophy (DMD) has led to clinical trials that include pulmonary endpoints that allow assessment of respiratory muscle status, especially in non-ambulatory subjects. Parent Project Muscular Dystrophy (PPMD) convened a workshop in Bethesda, MD from April 14-15, 2016 to summarize published respiratory data in DMD and give guidance to clinical researchers assessing the effect of interventions on pulmonary outcomes in DMD.
June 21, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28634449/electromyography-data-processing-impacts-muscle-synergies-during-gait-for-unimpaired-children-and-children-with-cerebral-palsy
#19
Benjamin R Shuman, Michael H Schwartz, Katherine M Steele
Muscle synergies calculated from electromyography (EMG) data identify weighted groups of muscles activated together during functional tasks. Research has shown that fewer synergies are required to describe EMG data of individuals with neurologic impairments. When considering potential clinical applications of synergies, understanding how EMG data processing impacts results and clinical interpretation is important. The aim of this study was to evaluate how EMG signal processing impacts synergy outputs during gait...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28634267/30-years-of-the-mineralocorticoid-receptor-the-role-of-the-mineralocorticoid-receptor-in-the-vasculature
#20
REVIEW
Jennifer J DuPont, Iris Z Jaffe
Since the mineralocorticoid receptor (MR) was cloned 30 years ago, it has become clear that MR is expressed in extra-renal tissues, including the cardiovascular system, where it is expressed in all cells of the vasculature. Understanding the role of MR in the vasculature has been of particular interest as clinical trials show that MR antagonism improves cardiovascular outcomes out of proportion to changes in blood pressure. The last 30 years of research have demonstrated that MR is a functional hormone-activated transcription factor in vascular smooth muscle cells and endothelial cells...
July 2017: Journal of Endocrinology
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