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MUSCLE INJURIE

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https://www.readbyqxmd.com/read/28095141/an-old-problem-aging-and-skeletal-muscle-strain-injury
#1
Brent A Baker
: Clinical Scenario: Even though chronological aging is an inevitable phenomenological consequence occurring in every living organism, it is biological aging that may be the most significant factor challenging our quality of life. Development of functional limitations, resulting from improper maintenance and restoration of various organ systems, ultimately leads to reduced health and independence. Skeletal muscle is an organ system, that when challenged, is often injured in response to varying stimuli...
January 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28095094/female-age-related-differences-in-biomechanics-and-muscle-activity-during-descents-on-the-outstretched-arms
#2
Lauren Jane Lattimer, Joel Lanovaz, Jon Farthing, Stéphanie Madill, Soo Kim, Stephen Robinovitch, Cathy Arnold
The purposes of this study were to examine female age differences in: 1) upper extremity (UE) and trunk muscle activity, elbow joint moment, loading force and UE energy absorption during a controlled forward body descent and 2) UE muscle strength. Twenty young (mean 24.8±3.4 yrs.) and 20 older (68.4±5.7 yrs.) women were assessed via dynamometry for isometric, concentric and eccentric UE strength and performed forward descents on force plates at three body lean angles (60, 45, and 30° from horizontal). Significant differences (p < ...
January 17, 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/28094257/pten-is-necessary-for-the-quiescence-and-maintenance-of-adult-muscle-stem-cells
#3
Feng Yue, Pengpeng Bi, Chao Wang, Tizhong Shan, Yaohui Nie, Timothy L Ratliff, Timothy P Gavin, Shihuan Kuang
Satellite cells (SCs) are myogenic stem cells required for regeneration of adult skeletal muscles. A proper balance among quiescence, activation and differentiation is essential for long-term maintenance of SCs and their regenerative function. Here we show a function of Pten (phosphatase and tensin homologue) in quiescent SCs. Deletion of Pten in quiescent SCs leads to their spontaneous activation and premature differentiation without proliferation, resulting in depletion of SC pool and regenerative failure...
January 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28094213/examination-of-the-early-wound-healing-process-under-different-wound-dressing-conditions
#4
Toshiro Kibe, Takashi Koga, Kazuhide Nishihara, Takao Fuchigami, Takuya Yoshimura, Tetsushi Taguchi, Norifumi Nakamura
OBJECTIVE: Various types of wound-healing dressings have been used to assist in the healing of surgical wounds. We analyzed the wound-healing process in an animal model using different existing wound dressings. STUDY DESIGN: Full-thickness defects were created using a biopsy punch on the backs of 7-week-old rats. The wounded areas were covered with NEOVEIL (polyglycolic acid [PGA]) or TERUDERMIS (collagen sponge [CS]) affixed using a rat jacket. The wound area, neo-epithelium length, and α-smooth muscle actin (α-SMA) expression were evaluated and compared among the control, PGA, and CS groups...
November 11, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28093618/mri-assessment-of-calf-injuries-in-australian-football-league-players-findings-that-influence-return-to-play
#5
George Waterworth, Sara Wein, Alexandra Gorelik, Andrew H Rotstein
OBJECTIVE: Calf muscle strains have become increasingly prevalent in recent seasons of the Australian Football League (AFL) and represent a significant cause of time lost from competition. The purpose of this study was to examine the association between MRI features of calf muscle strains and games missed and to thereby identify parameters that are of prognostic value. MATERIALS AND METHODS: A retrospective analysis of MRI scans of AFL players with calf strains referred to a musculoskeletal radiology clinic over a 5-year period (2008-2012) was performed...
January 16, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28093018/algorithm-for-bionic-hand-reconstruction-in-patients-with-global-brachial-plexopathies
#6
Laura A Hruby, Agnes Sturma, Johannes A Mayer, Anna Pittermann, Stefan Salminger, Oskar C Aszmann
OBJECTIVE Global brachial plexus lesions with multiple root avulsions are among the most severe nerve injuries, leading to lifelong disability. Fortunately, in most cases primary and secondary reconstructions provide a stable shoulder and restore sufficient arm function. Restoration of biological hand function, however, remains a reconstructive goal that is difficult to reach. The recently introduced concept of bionic reconstruction overcomes biological limitations of classic reconstructive surgery to restore hand function by combining selective nerve and muscle transfers with elective amputation of the functionless hand and its replacement with a prosthetic device...
January 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28092739/an-emg-driven-biomechanical-model-of-the-canine-cervical-spine
#7
M Alizadeh, G G Knapik, J S Dufour, C Zindl, M J Allen, J Bertran, N Fitzpatrick, W S Marras
Due to the frequency of cervical spine injuries in canines, the purpose of this effort was to develop an EMG-driven dynamic model of the canine cervical spine to assess a biomechanical understanding that enables one to investigate the risk of neck disorders. A canine subject was recruited in this investigation in order to collect subject specific data. Reflective markers and a motion capture system were used for kinematic measurement; surface electrodes were used to record electromyography signals, and with the aid of force plate kinetics were recorded...
December 26, 2016: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28092265/the-fibronectin-synergy-site-re-enforces-cell-adhesion-and-mediates-a-crosstalk-between-integrin-classes
#8
Maria Benito-Jardón, Sarah Klapproth, Irene Gimeno-LLuch, Tobias Petzold, Mitasha Bharadwaj, Daniel J Müller, Gabriele Zuchtriegel, Christoph A Reichel, Mercedes Costell
Fibronectin (FN), a major extracellular matrix component, enables integrin-mediated cell adhesion via binding of α5β1, αIIbβ3 and αv-class integrins to an RGD-motif. An additional linkage for α5 and αIIb is the synergy site located in close proximity to the RGD motif. We report that mice with a dysfunctional FN-synergy motif (FNsyn/syn) suffer from surprisingly mild platelet adhesion and bleeding defects due to delayed thrombus formation after vessel injury. Additional loss of β3 integrins dramatically aggravates the bleedings and severely compromises smooth muscle cell coverage of the vasculature leading to embryonic lethality...
January 16, 2017: ELife
https://www.readbyqxmd.com/read/28092213/cellular-and-molecular-factors-influencing-tendon-repair
#9
Sushmitha Durgam, Matthew Stewart
Tendons are complex, hierarchically organized connective tissues that transmit tensile forces between muscles and tendons. Tendon injuries are among the most common orthopedic problems with long-term disability as a frequent consequence due to prolonged healing time. Further, the repair tissue is of inferior quality, predisposing patients to high rates of recurrence following initial injury. Co-ordinated cellular processes and biological factors under the influence of mechanical loading are involved in tendon healing and our understanding of these events lags behind other musculoskeletal tissues...
January 16, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28090397/insights-about-fall-prevention-of-older-adults-in-the-state-of-hawai-i
#10
Yuka Yamazaki, Cullen T Hayashida, Valerie Yontz
The senior population in Hawai'i is growing at a dramatic pace. In the older population, falls and fall-related injuries are leading causes of morbidity and mortality. Moreover, the health care costs for falls are very high. The State of Hawai'i has taken measures to prevent falls through the promotion of medication reviews, vision checks, home assessments, and exercise. However, current published examinations of fall preventive measures have been insufficient, and more research is needed to confirm risk factors, effectiveness of preventive measures, and to explore future objectives...
January 2017: Hawai'i Journal of Medicine & Public Health: a Journal of Asia Pacific Medicine & Public Health
https://www.readbyqxmd.com/read/28089898/exercise-guidelines-to-promote-cardiometabolic-health-in-spinal-cord-injured-humans-time-to-raise-the-intensity
#11
Tom E Nightingale, Richard S Metcalfe, Niels Bj Vollaard, James L J Bilzon
Spinal cord injury (SCI) is a life changing event that, as a result of paralysis, negatively influences habitual levels of physical activity and hence cardiometabolic health. Performing regular structured exercise therefore appears extremely important in persons with SCI. However, exercise options are mainly limited to the upper-body, which involves a smaller activated muscle mass compared to the mainly leg-based activities commonly performed by non-disabled individuals. Current exercise guidelines for SCI focus predominantly on relative short durations of moderate-intensity aerobic arm cranking exercise, yet contemporary evidence suggests this is not sufficient to induce meaningful improvements in risk factors for the prevention of cardiometabolic disease in this population...
January 12, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28089837/direct-midline-posterior-corpectomy-and-fusion-of-a-lumbar-burst-fracture-with-retrospondyloptosis-a-case-report
#12
Arthur Carminucci, Rachid Assina, R Nick Hernandez, Ira M Goldstein
BACKGROUND: Traumatic burst fractures of the lumbar spine can result in significant neurological injury and mechanical instability. The ideal surgical approach for the treatment of unstable lumbar spine burst fractures remains debatable. CASE DESCRIPTION: A 37 year-old male presented with severe neurological injury including loss of motor function below the level of the iliopsoas muscles bilaterally, saddle anesthesia, and absent rectal tone, following a fall from 60 ft...
January 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28089748/bioaccumulation-of-lead-and-non-specific-immune-responses-in-white-shrimp-litopenaeus-vannamei-to-pb-exposure
#13
Yu-Sheng Wu, Shih-Ling Huang, Hsin-Chieh Chung, Fan-Hua Nan
In this study, we investigated organ accumulation and nonspecific immune response in white shrimp (Litopenaeus vannamei) that were exposed to various concentrations of lead (Pb) solution. The concentrations of Pb in the hepatopancreas, haemolymph, and muscle were measured moreover the total heamocyte count, phenoloxidase activity, O2(-) and physiological factors such as glutamic oxaloacetate transaminase (GOT), glutamic pyruvic transaminase (GPT), and haemolymph glucose were detected. The results showed that the hepatopancreas was the main organ of accumulation of Pb in white shrimp and the cumulative concentration of each organ was positively correlated with the experimental Pb concentration and immersion time...
January 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28089323/neurophysiological-monitoring-of-lumbar-spinal-nerve-roots-a-case-report-of-postoperative-deficit-and-literature-review
#14
Yuguang Chen, Baoqing P Wang, Junlin Yang, Yaolong Deng
INTRODUCTION: Intraoperative neurophysiological monitoring (IONM) has proven to help reduce the probability of postoperative neurological deficit for spinal deformity correctional surgeries. However, in rare cases new deficits may still happen. We report a surgical case in which the patient had postoperative paralysis. We would like to call for more case reports with postoperative neurological deficits as they present difficult clinical cases. PRESENTATION OF CASE: A 61-year-old male patient with severe thoracolumbar kyphoscoliosis underwent posterior spinal correction and fusion with segmental T10-L5 pedicle screws and rods instrumentation with IONM...
November 19, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28089079/repeated-subarachnoid-administrations-of-autologous-mesenchymal-stromal-cells-supported-in-autologous-plasma-improve-quality-of-life-in-patients-suffering-incomplete-spinal-cord-injury
#15
Jesús Vaquero, Mercedes Zurita, Miguel A Rico, Celia Bonilla, Concepción Aguayo, Cecilia Fernández, Noemí Tapiador, Marta Sevilla, Carlos Morejón, Jesús Montilla, Francisco Martínez, Esperanza Marín, Salvador Bustamante, David Vázquez, Joaquín Carballido, Alicia Rodríguez, Paula Martínez, Coral García, Mercedes Ovejero, Marta V Fernández
BACKGROUND AIMS: Cell therapy with mesenchymal stromal cells (MSCs) offers new hope for patients suffering from spinal cord injury (SCI). METHODS: Ten patients with established incomplete SCI received four subarachnoid administrations of 30 × 10(6) autologous bone marrow MSCs, supported in autologous plasma, at months 1, 4, 7 and 10 of the study, and were followed until the month 12. Urodynamic, neurophysiological and neuroimaging studies were performed at months 6 and 12, and compared with basal studies...
January 6, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28088934/clinical-diagnosis-and-treatment-of-intraorbital-wooden-foreign-bodies
#16
Jia Li, Li-Ping Zhou, Jing Jin, Hong-Feng Yuan
PURPOSE: The intraorbital wooden foreign body is often misdiagnosed or missed on computed tomog- raphy (CT) scan, due to the invisible or unclear images. The residual foreign bodies often occur during surgical removal. The clinical manifestations, imaging features and treatment of intraorbital wooden foreign bodies were discussed in this study. METHOD: We retrospectively analyzed 14 cases of intraorbital wooden foreign bodies managed at our hospital between January 2007 and May 2015...
December 1, 2016: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28088887/-improvement-of-lumbal-motor-control-and-trunkmuscle-conditions-with-a-novel-low-back-pain-prevention-exercise-program
#17
Viktória Kovácsné Bobály, Brigitta Szilágyi, Alexandra Makai, Ákos Koller, Melinda Járomi
INTRODUCTION: Ballet dancers often suffer from low back pain. AIM: Low back pain can be reduced by strengthening the core muscles with the help of a special exercise program. MATERIALS AND METHODS: In the study 62 ballet dancer women (average age: 14.89 ± 1.21 years) were included. Intervention group: n = 30 participant, average age: 14.86 ± 1.00 years, control group: n = 32 participant, average age: 14.91 ± 1.37 years. We examined the pain intensity that occurs during training with visual analog scale, the habitual posture with photogrammetry, the abdominal muscle strength with Kraus-Weber test, the static muscle strength of the trunk muscles with core test and the lumbar motor control with leg lowering test...
January 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28088376/how-early-must-an-acute-achilles-tendon-rupture-be-repaired
#18
Young Hwan Park, Seong Min Jeong, Gi Won Choi, Hak Jun Kim
An acute Achilles tendon rupture is the most common tendon rupture of the lower extremities, yet the optimal timing for an early surgical repair is unclear. To identify the optimal time for an early surgical repair with favorable results, we evaluated the isokinetic muscle strength and clinical outcomes of early surgical repairs of acute Achilles tendon ruptures performed at different time points after injury. Between January 2011 and July 2015, a total of 65 patients underwent an acute Achilles tendon rupture repair within 1 week after injury...
January 9, 2017: Injury
https://www.readbyqxmd.com/read/28088301/methocarbamol-use-is-associated-with-decreased-hospital-length-of-stay-in-trauma-patients-with-closed-rib-fractures
#19
Asad E Patanwala, Ohoud Aljuhani, Brian J Kopp, Brian L Erstad
BACKGROUND: The objective of this study was to evaluate the effect of methocarbamol on hospital length of stay in patients with closed rib fracture injuries. METHODS: This was a retrospective cohort study conducted in an academic medical center in the United States. Adult trauma patients, who sustained closed rib fractures, were included. Patients were categorized based on whether they received methocarbamol or not during admission. The primary outcome of interest was time to hospital discharge in days (i...
January 6, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28088107/gaas-laser-therapy-reestablishes-the-morphology-of-the-nmj-and-nachrs-after-injury-due-to-bupivacaine
#20
Cristiane Neves Alessi Pissulin, Paula Aiello Tomé de Souza Castro, Flávio Codina, Carina Guidi Pinto, Ivan Jose Vechetti-Junior, Selma Maria Michelin Matheus
BACKGROUND: Local anesthetics are used to relieve pre- and postoperative pain, acting on both sodium channels and nicotinic acetylcholine receptors (nAChR) at the neuromuscular junction (NMJ). Bupivacaine acts as a non-competitive antagonist and has limitations, such as myotoxicity, neurotoxicity, and inflammation. Low-level laser therapy (LLLT) has anti-inflammatory, regenerative, and analgesic effects. The aim of the present study was to evaluate the effects of a gallium arsenide laser (GaAs) on the morphology of the NMJ and nAChRs after application of bupivacaine in the sternomastoid muscle...
December 22, 2016: Journal of Photochemistry and Photobiology. B, Biology
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