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"muscle injury"

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https://www.readbyqxmd.com/read/29025710/opposing-actions-of-akt-protein-kinase-b-isoforms-in-vascular-smooth-muscle-injury-and-therapeutic-response
#1
Yu Jin, Yi Xie, Allison C Ostriker, Xinbo Zhang, Renjing Liu, Monica Y Lee, Kristen L Leslie, Waiho Tang, Jing Du, Seung Hee Lee, Yingdi Wang, William C Sessa, John Hwa, Jun Yu, Kathleen A Martin
OBJECTIVE: Drug-eluting stent delivery of mTORC1 (mammalian target of rapamycin complex 1) inhibitors is highly effective in preventing intimal hyperplasia after coronary revascularization, but adverse effects limit their use for systemic vascular disease. Understanding the mechanism of action may lead to new treatment strategies. We have shown that rapamycin promotes vascular smooth muscle cell differentiation in an AKT2-dependent manner in vitro. Here, we investigate the roles of AKT (protein kinase B) isoforms in intimal hyperplasia...
October 12, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28983756/effects-of-photobiomodulation-therapy-and-topical-non-steroidal-anti-inflammatory-drug-on-skeletal-muscle-injury-induced-by-contusion-in-rats-part-1-morphological-and-functional-aspects
#2
Shaiane Silva Tomazoni, Lúcio Frigo, Tereza Cristina Dos Reis Ferreira, Heliodora Leão Casalechi, Simone Teixeira, Patrícia de Almeida, Marcelo Nicolas Muscara, Rodrigo Labat Marcos, Andrey Jorge Serra, Paulo de Tarso Camillo de Carvalho, Ernesto Cesar Pinto Leal-Junior
Musculoskeletal injuries are very frequent and are responsible for causing pain and impairment of muscle function, as well as significant functional limitations. In the acute phase, the most prescribed treatment is with non-steroidal anti-inflammatory drugs (NSAIDs), despite their questionable effectiveness. However, the use of photobiomodulation therapy (PBMT) in musculoskeletal disorders has been increasing in the last few years, and this therapy appears to be an interesting alternative to the traditional drugs...
October 5, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28976491/genetic-variants-and-hamstring-injury-in-soccer-an-association-and-validation-study
#3
Jon Larruskain, David Celorrio, Irantzu Barrio, Adrian Odriozola, Susana M Gil, Juan Ramon Fernandez-Lopez, Raul Nozal, Isusko Ortuzar, Jose A Lekue, Jose M Aznar
PURPOSE: To investigate the association of candidate single nucleotide polymorphisms (SNPs) with non-contact hamstring muscle injuries in elite soccer players, and to create and validate a model to assess the risk of hamstring injury. METHODS: 107 elite male outfield players were prospectively followed for 6 seasons. Players were genotyped for 37 SNPs previously investigated in relation to musculoskeletal injuries. The association of SNPs, previous injury, age, level of play, position and anthropometric data with 129 hamstring injuries (413 observations) was investigated in the discovery phase (2010-2015), and a multivariable Cox-frailty model was created using forward selection...
October 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28971270/calcium-calmodulin-dependent-protein-kinase-iv-camkiv-mediates-acute-skeletal-muscle-inflammatory-response
#4
DanDan Shi, RuiCai Gu, YaFeng Song, MaoChao Ding, Tao Huang, MengXia Guo, JiangWei Xiao, WenHua Huang, Hua Liao
The objective of this study is to investigate the role of Calmodulin-dependent protein kinase IV (CaMKIV) in Cardiotoxin (CTX)-induced mice muscle inflammation. CTX injection i.m. was performed to induce B6 mice acute tibialis anterior (TA) muscle injury. The mice were then injected i.p. with the recombinant CaMKIV protein or its antagonist KN-93. Immunoblotting was used to assess Calmodulin (CaM) and CaMKIV levels. Immunofluorescence was used to detect intramuscular infiltration or major histocompatibility complex (MHC)-I expression in damaged muscle...
October 2, 2017: Inflammation
https://www.readbyqxmd.com/read/28970581/levels-of-s100b-protein-drive-the-reparative-process-in-acute-muscle-injury-and-muscular-dystrophy
#5
Francesca Riuzzi, Sara Beccafico, Roberta Sagheddu, Sara Chiappalupi, Ileana Giambanco, Oxana Bereshchenko, Carlo Riccardi, Guglielmo Sorci, Rosario Donato
Regeneration of injured skeletal muscles relies on a tightly controlled chain of cellular and molecular events. We show that appropriate levels of S100B protein are required for timely muscle regeneration after acute injury. S100B released from damaged myofibers and infiltrating macrophages expands the myoblast population, attracts macrophages and promotes their polarization into M2 (pro-regenerative) phenotype, and modulates collagen deposition, by interacting with RAGE (receptor for advanced glycation end-products) or FGFR1 (fibroblast growth factor receptor 1) depending on the muscle repair phase and local conditions...
October 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28965338/training-shoes-do-not-decrease-the-negative-work-of-the-lower-extremity-joints
#6
Satoru Hashizume, Akihiko Murai, Hiroaki Hobara, Yoshiyuki Kobayashi, Mitsunori Tada, Masaaki Mochimaru
Different types of running shoes may have different influence on the negative work of each lower extremity joint. Clarifying this influence can reduce the potential risk of muscle injury. The present study examined the difference in the negative work and associated kinetic and kinematic parameters of the lower extremity joints between training shoes and racing flats during the contact phase of running. Participants were asked to run on a runway at a speed of 3.0 m·s(-1) for both training shoes and racing flats...
October 1, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28959671/a-severe-myopathy-case-in-aged-patient-treated-with-high-statin-dosage
#7
Canzonieri Elena, De Candia Cristina, Tarascio Salvatore, Giamporcaro Silvia, Lumera Giovanni, Rigano Giuseppe, Incognito Carmela, Privitera Filippo, Guarnaccia Agata, Foti Pietro Valerio, Palmucci Stefano, Gangemi Pietro, Fuccio-Sanzà Giulia, Signorelli Salvatore Santo
Statins (S) are widely used drugs for cardiovascular prevention however their utilization may cause a various grade of muscle toxicity. Sometime S discontinuation alone is not sufficient to revert muscle injury and this can evolve in serious inflammatory muscle disease. In this case immunosuppressive medications are required to achieve remission. This case report describes a patient who developed rhabdomyolysis after recent S treatment initiation and the diagnostic work up have lead to the diagnosis of necrotizing autoimmune myopathy (NAM)...
2017: Toxicology Reports
https://www.readbyqxmd.com/read/28955935/treadmill-running-induces-satellite-cell-activation-in-diabetic-mice
#8
Shin Fujimaki, Tamami Wakabayashi, Makoto Asashima, Tohru Takemasa, Tomoko Kuwabara
Skeletal muscle-derived stem cells, termed as satellite cells, play essential roles in regeneration after muscle injury in adult skeletal muscle. Diabetes mellitus (DM), one of the most common metabolic diseases, causes impairments of satellite cell function. However, the studies of the countermeasures for the DM-induced dysfunction of satellite cells have been poor. Here, we investigated the effects of chronic running exercise on satellite cell activation in diabetic mice focused on the molecular mechanism including Notch and Wnt signaling, which are contribute to the fate determination of satellite cells...
December 2016: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/28953439/early-versus-delayed-rehabilitation-after-acute-muscle-injury
#9
LETTER
Monika L Bayer, S Peter Magnusson, Michael Kjaer
New England Journal of Medicine, Volume 377, Issue 13, Page 1300-1301, September 2017.
September 28, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28952868/comparison-of-thigh-muscle-strain-occurrence-and-injury-patterns-between-male-and-female-high-school-soccer-athletes
#10
Kevin M Cross, Kelly K Gurka, Susan Saliba, Mark Conaway, Jay Hertel
CONTEXT: Thigh muscles strains are among the most common injuries in high school soccer for both males and females. Similar results have been reported among collegiate soccer players, specifically for hamstring strains. In collegiate soccer, males have a higher injury rate than women although they share common injury characteristics. Currently, no studies exist comparing the injury rate or injury characteristics of thigh muscle strains between sexes playing high school soccer. OBJECTIVE: To compare thigh muscle strain injury rates and injury event characteristics among sexes participating in high school soccer...
September 27, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28939843/macrophage-released-adamts1-promotes-muscle-stem-cell-activation
#11
Hongqing Du, Chung-Hsuan Shih, Michael N Wosczyna, Alisa A Mueller, Joonseok Cho, Abhishek Aggarwal, Thomas A Rando, Brian J Feldman
Coordinated activation of muscle stem cells (known as satellite cells) is critical for postnatal muscle growth and regeneration. The muscle stem cell niche is central for regulating the activation state of satellite cells, but the specific extracellular signals that coordinate this regulation are poorly understood. Here we show that macrophages at sites of muscle injury induce activation of satellite cells via expression of Adamts1. Overexpression of Adamts1 in macrophages in vivo is sufficient to increase satellite cell activation and improve muscle regeneration in young mice...
September 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28935143/vitamin-e-treatment-decreases-muscle-injury-in-mdx-mice
#12
Rafael Dias Mâncio, Túlio de Almeida Hermes, Aline Barbosa Macedo, Daniela Sayuri Mizobuti, Amanda Harduim Valduga, Ian Feller Rupcic, Elaine Minatel
OBJECTIVE: Oxidative stress, in addition to the absence of the dystrophin protein, has been considered an important regulator of Duchenne muscular dystrophy (DMD). Vitamin E presents an important role as a potent antioxidant and in preserving the integrity of the cell membrane. In this study, we evaluated the effects of vitamin E therapy on some physiological pathways that can contribute to muscle injury in the diaphragm muscle of mdx mice (the experimental model of DMD) such as CK levels, inflammatory response, oxidative stress, and the enzymatic antioxidant system...
November 2017: Nutrition
https://www.readbyqxmd.com/read/28934166/is-branched-chain-amino-acids-supplementation-an-efficient-nutritional-strategy-to-alleviate-skeletal-muscle-damage-a-systematic-review
#13
REVIEW
Alexandre Fouré, David Bendahan
Amino acids and more precisely, branched-chain amino acids (BCAAs), are usually consumed as nutritional supplements by many athletes and people involved in regular and moderate physical activities regardless of their practice level. BCAAs have been initially shown to increase muscle mass and have also been implicated in the limitation of structural and metabolic alterations associated with exercise damage. This systematic review provides a comprehensive analysis of the literature regarding the beneficial effects of BCAAs supplementation within the context of exercise-induced muscle damage or muscle injury...
September 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28931145/medical-and-psychological-problems-faced-by-young-australian-gap-year-travellers
#14
Luis Furuya-Kanamori, Deborah Mills, Sarah Sheridan, Colleen Lau
Background: Gap year travellers can potentially be exposed to many infectious diseases and other travel-related health problems including injuries and psychological problems. Currently, there is little information on health and wellbeing of this particular group of travellers. Methods: Participants were recruited from an organization that specialized in organising international gap year placements. Gap year travellers were asked to complete a pre-departure survey on demographics, placement destination and duration, previous travel experience, hobbies, risk taking behaviour, anticipated problems during the placement, and pre-travel preparations...
September 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28919185/epidemiology-of-cervical-spine-injuries-in-high-school-athletes-over-a-ten-year-period
#15
Adele Meron, Christopher McMullen, Scott R Laker, Dustin Currie, R Dawn Comstock
BACKGROUND: Over 7 million athletes participate in high school (HS) sports annually, with both the benefits of physical activity and risks of injury. While catastrophic cervical spine injuries have been studied, limited data are available characterizing less severe cervical spine injuries in HS athletes. OBJECTIVE: To describe and compare cervical spine injury rates and patterns among United States (US) HS athletes across 24 sports over a ten-year period. DESIGN: Descriptive epidemiology study SETTING: National sample of high schools participating in the High School Reporting Information Online (High School RIO) injury surveillance system...
September 12, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28917232/compressed-food-with-added-functional-oligopeptides-improves-performance-during-military-endurance-training
#16
Zhi-Qiang Zheng, Zhan-Hui Geng, Jia-Xi Liu, Shun-Tang Guo
BACKGROUND AND OBJECTIVES: Oligosaccharide or oligopeptide supplementation may have a significant impact on endurance performance. This study evaluated the effects of adding maltooligosaccharides (MO) or soy oligopeptides (SO) to compressed food (CF) on the physical response of soldiers to daily military training. METHODS AND STUDY DESIGN: Twelve soldiers were randomized to four diet groups: regular meals, CF, CFMO, and CFSO (crossover design). They participated in exercise tests including 90 minutes running at 55-65% VO2max and exhaustive running...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28915960/pleiotropic-effects-of-metformin-to-rescue-statin-induced-muscle-injury-and-insulin-resistance-a-proposed-mechanism-and-potential-clinical-implications
#17
Nicholas W Carris, Srinivas M Tipparaju, David J Magness, Kalyan C Chapalamadugu, Ronald R Magness
The 2013 American Heart Association Blood Cholesterol Guidelines increased the number of patients recommended for statin therapy in the United States to 56million. Two common statin side effects are muscle pain, referred to as "statin-associated muscle symptoms", and increased risk for new onset type-2-diabetes mellitus. Up to 25% of statin users report muscle symptoms resulting in many patients being switched to lower dose or lower potency statins, or refusing statins altogether. The most likely signaling mechanisms for statin-associated muscle symptoms overlaps with the proposed mechanism of statin-induced insulin resistance...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28910888/-endoscopic-salvage-treatment-for-optic-neuropathy-caused-by-sinonasal-fibro-osseous-lesions
#18
J Deng, F H Chen, Y Y Lai, J B Shi
Objective: To summarize the surgical techniques, benefits and limitations of transnasal endoscopic resection and optic nerve decompression for patients with optic neuropathy caused by fibro-osseous lesions. Methods: Eight patients with optic neuropathy caused by fibro-osseous lesions who accepted endoscopic surgery of either resection of the lesion or decompression of optic nerve in Otorhinolaryngology Hospital, First Affiliated Hospital of Sun Yat-sen University from 2007 to 2016 were retrospectively reviewed and followed until April, 2017...
September 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28906407/gelatinases-and-physical-exercise-a-systematic-review-of-evidence-from-human-studies
#19
REVIEW
Rosalia Lo Presti, Eugenia Hopps, Gregorio Caimi
BACKGROUND: Matrix metalloproteinases (MMPs), particularly gelatinase A (MMP-2) and gelatinase B (MMP-9), as well as their tissue inhibitors (TIMP-1 and TIMP-2), are involved in the development of skeletal muscle tissue, in the repair process after muscle injury and in the adaptive modifications induced by physical exercise in skeletal muscle. This paper aims at reviewing results from human studies that investigated the role of gelatinases and their inhibitors in skeletal muscle response to acute physical exercise or training...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28904762/influences-of-thermal-environment-on-fish-growth
#20
Sebastián Boltaña, Nataly Sanhueza, Andrea Aguilar, Cristian Gallardo-Escarate, Gabriel Arriagada, Juan Antonio Valdes, Doris Soto, Renato A Quiñones
Thermoregulation in ectothermic animals is influenced by the ability to effectively respond to thermal variations. While it is known that ectotherms are affected by thermal changes, it remains unknown whether physiological and/or metabolic traits are impacted by modifications to the thermal environment. Our research provides key evidence that fish ectotherms are highly influenced by thermal variability during development, which leads to important modifications at several metabolic levels (e.g., growth trajectories, microstructural alterations, muscle injuries, and molecular mechanisms)...
September 2017: Ecology and Evolution
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