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https://www.readbyqxmd.com/read/28636566/detection-of-muscle-gap-by-l-bia-in-muscle-injuries-clinical-prognosis
#1
L Nescolarde, J Yanguas, J Terricabras, H Lukaski, X Alomar, J Rosell-Ferrer, G Rodas
Sport-related muscle injury classifications are based basically on imaging criteria such as ultrasound (US) and magnetic resonance imaging (MRI) without consensus because of a lack of clinical prognostics for return-to-play (RTP), which is conditioned upon the severity of the injury, and this in turn with the muscle gap (muscular fibers retraction). Recently, Futbol Club Barcelona's medical department proposed a new muscle injury classification in which muscle gap plays an important role, with the drawback that it is not always possible to identify by MRI...
June 21, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28630577/effects-of-high-velocity-elastic-band-versus-heavy-resistance-training-on-hamstring-strength-activation-and-sprint-running-performance
#2
Donatas Janusevicius, Audrius Snieckus, Albertas Skurvydas, Viktoras Silinskas, Eugenijus Trinkunas, Joan Aureli Cadefau, Sigitas Kamandulis
Hamstring muscle injuries occur during high-speed activities, which suggests that muscular strength at high velocities may be more important than maximal strength. This study examined hamstring adaptations to training for maximal strength and for strength at high velocities. Physically active men (n = 25; age, 23.0 ± 3.2 years) were randomly divided into: (1) a resistance training (RT, n = 8) group, which performed high-load, low-velocity concentric-eccentric hamstring contractions; (2) a resistance training concentric (RTC; n = 9) group, which performed high-load, low-velocity concentric-only hamstring contractions; and (3) a high-velocity elastic band training (HVT, n = 8) group, which performed low-load, high-velocity concentric-eccentric hamstring contractions...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28625951/evaluation-of-supplementing-active-peptide-s-effect-on-recovering-skeletal-muscle-micro-injury-after-track-and-field-exercises
#3
Caifeng Li, Zongyou Yang
To explore the effect of supplementing active peptide on recovering skeletal muscle injury after track and field exercises. METHOD: choose 80 patients (contain teenagers) with skeletal muscle micro-injury after the track and field exercises from March 2015 to July 2016, divide them into two groups. Normal treatment of micro-injury of skeletal muscle is given to the control group while active peptide is supplemented to the experimental group based on normal treatment. Compare the two groups to find the differences in relevant indexes of skeletal muscle after track and field exercises...
January 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28607396/cxcl12-and-osteopontin-from-bone-marrow-derived-mesenchymal-stromal-cells-improve-muscle-regeneration
#4
Yasushi Maeda, Yasuhiro Yonemochi, Yuki Nakajyo, Hideaki Hidaka, Tokunori Ikeda, Yukio Ando
Muscle satellite cells are essential for muscle regeneration. However, efficient regeneration does not occur without muscle-resident mesenchymal progenitor cells. We show here that bone marrow-derived mesenchymal stromal cells (Bm-MSCs) also facilitate muscle regeneration in Duchenne muscular dystrophy (DMD) model mice. Bm-MSCs transplanted into peritoneal cavities of DMD model mice with severe muscle degeneration strongly suppressed dystrophic pathology and improved death-related symptoms, which resulted in dramatic lifespan extension...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28607151/the-transcriptional-co-repressor-tle3-regulates-myogenic-differentiation-by-repressing-the-activity-of-the-myod-transcription-factor
#5
Shoichiro Kokabu, Chihiro Nakatomi, Takuma Matsubara, Yusuke Ono, William N Addison, Jonathan W Lowery, Mariko Urata, Aaron M Hudnall, Suzuro Hitomi, Mitsushiro Nakatomi, Tsuyoshi Sato, Kenji Osawa, Tetsuya Yoda, Vicki Rosen, Eijiro Jimi
Satellite cells are skeletal muscle stem cells that provide myonuclei for postnatal muscle growth, maintenance, and repair/regeneration in adults. Normally, satellite cells are mitotically quiescent, but they are activated in response to muscle injury, in which case they proliferate extensively and exhibit upregulated expression of the transcription factor MyoD, a master regulator of myogenesis. MyoD forms a heterodimer with E proteins through their basic helix-loophelix (bHLH) domain, binds to E boxes in the genome, and thereby activates transcription at muscle-specific promoters...
June 12, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28607093/prostaglandin-e2-is-essential-for-efficacious-skeletal-muscle-stem-cell-function-augmenting-regeneration-and-strength
#6
Andrew T V Ho, Adelaida R Palla, Matthew R Blake, Nora D Yucel, Yu Xin Wang, Klas E G Magnusson, Colin A Holbrook, Peggy E Kraft, Scott L Delp, Helen M Blau
Skeletal muscles harbor quiescent muscle-specific stem cells (MuSCs) capable of tissue regeneration throughout life. Muscle injury precipitates a complex inflammatory response in which a multiplicity of cell types, cytokines, and growth factors participate. Here we show that Prostaglandin E2 (PGE2) is an inflammatory cytokine that directly targets MuSCs via the EP4 receptor, leading to MuSC expansion. An acute treatment with PGE2 suffices to robustly augment muscle regeneration by either endogenous or transplanted MuSCs...
June 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28596791/in-utero-stem-cell-transplantation-potential-therapeutic-application-for-muscle-diseases
#7
REVIEW
Neeladri Chowdhury, Atsushi Asakura
Muscular dystrophies, myopathies, and traumatic muscle injury and loss encompass a large group of conditions that currently have no cure. Myoblast transplantations have been investigated as potential cures for these conditions for decades. However, current techniques lack the ability to generate cell numbers required to produce any therapeutic benefit. In utero stem cell transplantation into embryos has been studied for many years mainly in the context of hematopoietic cells and has shown to have experimental advantages and therapeutic applications...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28593626/safety-of-lateral-interbody-fusion-surgery-without-intraoperative-monitoring
#8
Hong-Jae Lee, Kyeong-Sik Ryu, Jung-Woo Hur, Ji-Hoon Seong, Hyun-Jin Cho, Jin-Sung Kim
AIM: Oblique lateral interbody fusion (OLIF) is a minimally invasive surgical method that can access lumbar spine without direct dissection of psoas muscle and the need for intraoperative neuromonitoring (IOM) is questionable. The purpose of this study is to examine and document the transient and persistent perioperative complications in patients who underwent OLIF for degenerative lumbar disease without IOM. MATERIAL AND METHODS: Total 129 consecutive patients who were diagnosed as degenerative spinal disease from L1 to S1 and underwent the mini-open OLIF, were identified and retrospectively reviewed...
May 7, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28591366/creation-of-a-contusion-injury-method-for-skeletal-muscle-in-rats-with-differing-impacts
#9
Milla Gabriela Belarmino Dantas, Camila Mahara Dias Damasceno, Vanessa Raquel Pinto de Barros, Eveline Soares Menezes, Humberto de Sousa Fontoura, Ricardo Santana de Lima, Ferdinando Oliveira Carvalho, Jackson Roberto Guedes da Silva Almeida
Purpose: To realize a morphological examination of the musculoskeletal tissue, assessing the effect of a contusion method for the production in rat gastrocnemius, comparing the inflammatory responses generated by different impacts. Methods: For the analysis of a contusion method, twelve female Wistar rats were distributed into four groups. The lesion was generated by 324 g of mass that was dropped from different predetermined heights for each group (30, 45, 60 and 70 cm)...
May 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28583764/proteomic-composition-and-immunomodulatory-properties-of-urinary-bladder-matrix-scaffolds-in-homeostasis-and-injury
#10
REVIEW
Kaitlyn Sadtler, Sven D Sommerfeld, Matthew T Wolf, Xiaokun Wang, Shoumyo Majumdar, Liam Chung, Dhanashree S Kelkar, Akhilesh Pandey, Jennifer H Elisseeff
Urinary bladder matrix (UBM) is used clinically for management of wounds and reinforcement of surgical soft tissue repair, among other applications. UBM consists of the lamina propria and basal lamina of the porcine urinary bladder, and is decellularized as part of the process to manufacture the medical device. UBM is composed mainly of Collagen I, but also contains a wide variety of fibrillar and basement membrane collagens, glycoproteins, proteoglycans and ECM-associated factors. Upon application of the biomaterial in a traumatic or non-traumatic setting in a mouse model, there is a cascade of immune cells that respond to the damaged tissue and biomaterial...
June 2, 2017: Seminars in Immunology
https://www.readbyqxmd.com/read/28559976/quantitative-photoacoustic-imaging-for-early-detection-of-muscle-ischemia-injury
#11
Liang Chen, Hengheng Ma, Hong Liu, Kangquan Shou, Xun Zheng, Quli Fan, Aixi Yu, Xiang Hu
Acute lower extremity ischemia is a limb-and life-threatening problem. The timing of clinical intervention is critical to achieving optimal outcomes. However, there has been a lack of effective techniques capable of evaluating muscle and limb damage. Microcirculatory injury is the initial pathological change during ischemic muscle injury. Here, we performed photoacoustic imaging (PAI) in real time to quantitatively detect the degree of microcirculatory injury of ischemic muscles in a rat model in which Evans blue (EB), which strongly binds to albumin in blood, was used as a nontoxic molecular PA probe...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28546635/local-cryotherapy-minimally-impacts-the-metabolome-and-transcriptome-of-human-skeletal-muscle
#12
Dylan C Sarver, Kristoffer B Sugg, Nathaniel P Disser, Elizabeth R Sibilsky Enselman, Tariq M Awan, Christopher L Mendias
Cryotherapy is commonly used in the treatment of skeletal muscle injuries. However, the data to support the use of cryotherapy is inconclusive, and the biochemical etiology of cryotherapy in human skeletal muscle remains largely unknown. We therefore sought to determine how a clinically-relevant dose of cryotherapy would impact the transcriptome and metabolome of skeletal muscle. Eight healthy male subjects (age 24.7 ± 4.5 years, BMI 22.2 ± 1.6) received a 15 minute bout of local cryotherapy, delivered via ice cup massage over the anterolateral thigh...
May 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28536315/-skeletal-muscle-stem-cell
#13
Shinsuke Yuasa
Adult skeletal muscle has its own stem cell population known as satellite cells. After muscle injury, quiescent satellite cells are activated and then proliferate and differentiate into mature skeletal muscle to ensure that muscle function is recovered. In our screen for myocyte differentiation-promoting factors, we noted markedly elevated expression of granulocyte-colony stimulating factor receptor(G-CSFR, encoded by csf3r)in the skeletal muscle developing area. Furthermore, G-CSFR was transiently expressed in regenerating myocytes of adult injured skeletal muscle, and extrinsic G-CSF supported short-term and long-term muscle regeneration in mouse model of skeletal muscle injury...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28513280/application-of-acoustic-radiation-force-impulse-arfi-elastography-in-imaging-of-delayed-onset-muscle-soreness-doms-a-comparative-analysis-with-3t-mri
#14
Thilo Hotfiel, Marion Kellermann, Bernd Swoboda, Dane Wildner, Tobias Golditz, Casper Grim, Martin Raithel, Michael Uder, Rafael Heiss
CONTEXT: DOMS is one of the most common reasons for impaired muscle performance in sports and is associated with reduced muscle strength and frequently observed both in professional and recreational athletes. OBJECTIVE: To emphasize the diagnostic value of Acoustic Radiation Force Impulse (ARFI) in imaging of Delayed Onset Muscle Soreness by comparing findings to high-resolution 3T MRI T2 weighted sequences. DESIGN: Case series. SETTING: Laboratory environment...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28503793/rectus-abdominis-rhabdomyolysis-report-of-2-cases
#15
Jerome Boyle, Paul Marks, John Read
Exercise-induced rhabdomyolysis is an unusual clinical entity for physicians and one that is frequently misdiagnosed. With the ever-increasing use of sonography by radiologists, sonographers, and sports physicians in the diagnosis of acute muscle injury, recognition of the typical sonographic appearance of rhabdomyolysis is paramount. Current literature using high-resolution ultrasound equipment is limited, with much of the literature offering dated or incongruent descriptions. We describe the sonographic findings of hyperechoic muscle and a hypoechoic halo of edema in 2 proven cases of rectus abdominis rhabdomyolysis after exercise...
May 15, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28488835/incidence-of-injury-and-illness-in-south-african-professional-male-football-players-a-prospective-cohort-study
#16
Helen Bayne, Martin Schwellnus, Dina Janse Van Rensburg, Jhano Botha, Lervasen Pillay
BACKGROUND: Medical illnesses and sports-related injuries both have an effect on athlete health and performance. Epidemiology of injury and illness has been extensively researched during international football tournaments and the European football season. Reports on injury location and severity differ across geographical regions, and there is limited information on injury epidemiology in African football leagues. No studies have investigated the illness burden in football in Africa. METHODS: This was a prospective cohort study involving two football teams over the 10- month duration of the 2015/16 Premier Soccer League in South Africa...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28485676/assessment-of-preclinical-liver-and-skeletal-muscle-biomarkers-following-clofibrate-administration-in-wistar-rats
#17
Pierre Maliver, Matthias Festag, Moritz Bennecke, Francois Christen, Balázs Bánfai, Barbara Lenz, Michael Winter
Clofibrate is a known rodent hepatotoxicant classically associated with hepatocellular hypertrophy and increased serum activities of cellular alanine aminotransferase/aspartate aminotransferase (ALT/AST) in the absence of microscopic hepatocellular degeneration. At toxic dose, clofibrate induces liver and skeletal muscle injury. The objective of this study was to assess novel liver and skeletal muscle biomarkers following clofibrate administration in Wistar rats at different dose levels for 7 days. In addition to classical biomarkers, liver injury was assessed by cytokeratin 18 (CK18) cleaved form, high-mobility group box 1, arginase 1 (ARG1), microRNA 122 (miR-122), and glutamate dehydrogenase...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28481224/intermittent-glucocorticoid-steroid-dosing-enhances-muscle-repair-without-eliciting-muscle-atrophy
#18
Mattia Quattrocelli, David Y Barefield, James L Warner, Andy H Vo, Michele Hadhazy, Judy U Earley, Alexis R Demonbreun, Elizabeth M McNally
Glucocorticoid steroids such as prednisone are prescribed for chronic muscle conditions such as Duchenne muscular dystrophy, where their use is associated with prolonged ambulation. The positive effects of chronic steroid treatment in muscular dystrophy are paradoxical because these steroids are also known to trigger muscle atrophy. Chronic steroid use usually involves once-daily dosing, although weekly dosing in children has been suggested for its reduced side effects on behavior. In this work, we tested steroid dosing in mice and found that a single pulse of glucocorticoid steroids improved sarcolemmal repair through increased expression of annexins A1 and A6, which mediate myofiber repair...
June 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28480592/slow-myofiber-commitment-by-semaphorin-3a-secreted-from-myogenic-stem-cells
#19
Ryuichi Tatsumi, Takahiro Suzuki, Mai-Khoi Q Do, Yuki Ohya, Judy E Anderson, Ayumi Shibata, Mai Kawaguchi, Shunpei Ohya, Hideaki Ohtsubo, Wataru Mizunoya, Shoko Sawano, Yusuke Komiya, Riho Ichitsubo, Koichi Ojima, Shin-Ichiro Nishimatsu, Tsutomu Nohno, Yutaka Ohsawa, Yoshihide Sunada, Mako Nakamura, Mitsuhiro Furuse, Yoshihide Ikeuchi, Takanori Nishimura, Takeshi Yagi, Ronald E Allen
Recently, we found that resident myogenic stem satellite cells up-regulate a multi-functional secreted protein, semaphorin 3A (Sema3A), exclusively at the early- differentiation phase in response to muscle injury; however, its physiological significance is still unknown. Here we show that Sema3A impacts slow-twitch fiber generation through a signaling pathway, cell-membrane receptor (neuropilin2-plexinA3) → myogenin-myocyte enhancer factor 2D (MEF2D) → slow myosin heavy chain. This novel axis was found by small interfering RNA (siRNA)-transfection experiments in myoblast cultures, which also revealed an additional element that Sema3A-neuropilin1/plexinA1, A2 may enhance slow-fiber formation by activating signals that inhibit fast-myosin expression...
May 7, 2017: Stem Cells
https://www.readbyqxmd.com/read/28477022/downregulated-long-noncoding-rna-aldbgalg0000005049-induces-inflammation-in-chicken-muscle-suffered-from-selenium-deficiency-by-regulating-stearoyl-coa-desaturase
#20
Ruifeng Fan, Changyu Cao, Xia Zhao, Qunxiang Shi, Jinxin Zhao, Shiwen Xu
Long non-coding RNAs (lncRNAs) have been demonstrated to play a pivotal role in proliferation and differentiation of muscles. However, the study on the roles of lncRNAs in Selenium (Se) deficiency induced muscle injury is still unclear. In this study, deep sequencing was performed to profile lncRNAs and mRNAs of the muscles from the Se deficiency (-Se group) and control (C group) chickens. The results revealed that 38 lncRNAs (23 up-regulated and 15 down-regulated) and 687 mRNAs (285 up-regulated and 402 down-regulated) were significantly dysregulated expressed, and the significantly dysregulated pathway including Phagosome, Cardiac muscle contraction, and Peroxisome Proliferator-Activated Receptor (PPAR) in -Se group...
April 18, 2017: Oncotarget
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