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https://www.readbyqxmd.com/read/29330669/hip-and-groin-injuries-in-baseball-players
#1
REVIEW
Ryan A Mlynarek, Struan H Coleman
PURPOSE OF REVIEW: To discuss the clinical significance of the most common hip and groin injuries in baseball players, as well as an algorithmic approach to diagnosis and treatment of these injuries. RECENT FINDINGS: (a) Limitations in throwing velocity, pitch control, and bat swing speed may be secondary to decreased mobility and strength within the proximal kinetic chain, which must harness power from the lower extremities and core. (b) Approximately 5.5% of all baseball injuries per year involve the hip/groin and may lead to a significant amount of time spent on the disabled list...
January 12, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29326316/fibronectin-containing-extra-domain-a-induces-plaque-destabilization-in-the-innominate-artery-of-aged-apolipoprotein-e-deficient-mice
#2
Prakash Doddapattar, Manish Jain, Nirav Dhanesha, Steven R Lentz, Anil K Chauhan
OBJECTIVE: Fibronectin containing extra domain A (Fn-EDA) is an endogenous ligand of TLR4 (toll-like receptor 4) and is abundant in the extracellular matrix of advanced atherosclerotic lesions in human and mice. Irrespective of sex, deletion of Fn-EDA reduces early atherosclerosis in apolipoprotein E-deficient (Apoe-/-) mice. However, the contribution of Fn-EDA in advanced atherosclerosis remains poorly characterized. We determined the contribution of Fn-EDA in advanced atherosclerotic lesions of aged (1-year-old) Apoe-/- mice...
January 11, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29326312/foxo3a-forkhead-transcription-factor-o-subfamily-member-3a-links-vascular-smooth-muscle-cell-apoptosis-matrix-breakdown-atherosclerosis-and-vascular-remodeling-through-a-novel-pathway-involving-mmp13-matrix-metalloproteinase-13
#3
Haixiang Yu, Adam Fellows, Kirsty Foote, Zhaoqing Yang, Nichola Figg, Trevor Littlewood, Martin Bennett
OBJECTIVE: Vascular smooth muscle cell (VSMC) apoptosis accelerates atherosclerosis and promotes breakdown of the extracellular matrix, but the mechanistic links between these 2 processes are unknown. The forkhead protein FOXO3a (forkhead transcription factor O subfamily member 3a) is activated in human atherosclerosis and induces a range of proapoptotic and other transcriptional targets. We, therefore, determined the mechanisms and consequences of FOXO3a activation in atherosclerosis and arterial remodeling after injury...
January 11, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29323659/production-deformation-and-mechanical-investigation-of-magnetic-alginate-capsules
#4
Elena Zwar, Andre Kemna, Lena Richter, Patrick Degen, Heinz Rehage
In this article we investigated the deformation of alginate capsules in magnetic fields. The sensitivity to magnetic forces was realised by encapsulating an oil in water emulsion, where the oil droplets contained dispersed magnetic nanoparticles. We solved calcium ions in the aqueous emulsion phase, which act as crosslinking compounds for forming thin layers of alginate membranes. This encapsulating technique allows the production of flexible capsules with an emulsion as the capsule core. It is important to mention that the magnetic nanoparticles were stable and dispersed throughout the complete process, which is an important difference to most magnetic alginate-based materials...
January 11, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29313467/temporal-expression-of-mutant-tdp-43-correlates-with-early-amyotrophic-lateral-sclerosis-phenotype-and-motor-weakness
#5
Qihua Chen, Jinxia Zhou, Cao Huang, Bo Huang, Fangfang Bi, Hongxia Zhou, Bo Xiao
BACKGROUND: Mutant transactive response DNA-binding protein (TDP-43) is closely correlated to inherited form of amyotrophic lateral sclerosis (ALS). TDP-43 transgenic rats can reproduce the core phenotype of ALS and constitutive expression of TDP-43 caused postnatal death. OBJECTIVE: To understand whether neurologic deficiency caused by mutant TDP-43 is dependent on its temporal expression. METHOD: Transgenic rats were established that express mutant human TDP-43 (M337V substitution) in neurons, then a Tet-off system was used to regulate its expression...
January 9, 2018: Current Neurovascular Research
https://www.readbyqxmd.com/read/29303008/behavioural-modes-of-adherence-to-inspiratory-muscle-training-in-people-with-chronic-obstructive-pulmonary-disease-a-grounded-theory-study
#6
Dorthe Sørensen, Marie Ernst Christensen
PURPOSE: Our aim was to develop a theoretical account of the behavioural pattern of adherence to home-based inspiratory muscle training (IMT) in people with chronic obstructive pulmonary disease (COPD), performed as two daily sessions of 30 breaths with mechanical threshold loading. METHODS: This was a qualitative study based on the classic grounded theory method. We conducted interviews with people living with COPD recruited after completion of 6 weeks of outpatient pulmonary rehabilitation program in 2015...
January 5, 2018: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29290418/effect-of-high-intensity-perturbations-during-core-specific-sensorimotor-exercises-on-trunk-muscle-activation
#7
Juliane Mueller, Miralem Hadzic, Hendrik Mugele, Josefine Stoll, Steffen Mueller, Frank Mayer
Core-specific sensorimotor exercises are proven to enhance neuromuscular activity of the trunk. However, the influence of high-intensity perturbations on training efficiency is unclear within this context. Sixteen participants (29±2yrs; 175±8cm; 69±13kg) were prepared with a 12-lead bilateral trunk EMG. Warm-up on a dynamometer was followed by maximum voluntary isometric trunk (flex/ext) contraction (MVC). Next, participants performed four conditions for a one-legged stance with hip abduction on a stable surface (HA) repeated randomly on an unstable surface (HAP), on a stable surface with perturbation (HA+P), and on an unstable surface with perturbation (HAP+P)...
December 15, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29286129/knockdown-of-elf3a-inhibits-tgf%C3%A2-%C3%AE-1%C3%A2-induced-extracellular-matrix-protein-expression-in-keloid-fibroblasts
#8
Tianyu Li, Junxiang Zhao
Keloid formation is characterized by hyperproliferation of secretory and responsive keloid fibroblasts (KFs) and overproduction of extracellular matrix (ECM). Eukaryotic translation initiation factor 3 subunit A (eIF3a) one of the core subunits of the translation initiation complex, eIF3, has previously been reported to possess an anti‑fibrogenic effect. However, the role of eIF3a in keloid formation has not yet been investigated. Therefore, the present study examined the effect of eIF3a on transforming growth factor‑β1 (TGF‑β1)‑mediated ECM expression in KFs...
December 29, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29284736/carotid-atheroma-from-men-has-significantly-higher-levels-of-inflammation-and-iron-metabolism-enabled-by-macrophages
#9
Xi-Ming Yuan, Liam J Ward, Claes Forssell, Nabeel Siraj, Wei Li
BACKGROUND AND PURPOSE: Men differ from women in the manifestation of atherosclerosis and iron metabolism. Intraplaque hemorrhage and hemoglobin (Hb) catabolism by macrophages are associated with atherosclerotic lesion instability. The study aims were to investigate sex differences in (1) lesion severity in relation to blood Hb, (2) iron homeostasis in human carotid plaques, and (3) macrophage polarization within atheroma. METHODS: The carotid artery samples from 39 men and 23 women were immunostained with cell markers for macrophages, smooth muscle cells, ferritin, and TfR1 (transferrin receptor 1), which were further analyzed according to sex in relation to iron, Hb, and lipids in circulation...
December 28, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29284608/melanocortin-1-receptor-deficiency-promotes-atherosclerosis-in-apolipoprotein-e-mice
#10
Petteri Rinne, James J Kadiri, Mauricio Velasco-Delgado, Salla Nuutinen, Miro Viitala, Maija Hollmén, Martina Rami, Eriika Savontaus, Sabine Steffens
OBJECTIVE: The MC1-R (melanocortin 1 receptor) is expressed by monocytes and macrophages where it mediates anti-inflammatory actions. MC1-R also protects against macrophage foam cell formation primarily by promoting cholesterol efflux through the ABCA1 (ATP-binding cassette transporter subfamily A member 1) and ABCG1 (ATP-binding cassette transporter subfamily G member 1). In this study, we aimed to investigate whether global deficiency in MC1-R signaling affects the development of atherosclerosis...
December 28, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29284521/exercise-intervention-for-unilateral-amputees-with-low-back-pain-study-protocol-for-a-randomised-controlled-trial
#11
Joseph G Wasser, Daniel C Herman, MaryBeth Horodyski, Jason L Zaremski, Brady Tripp, Phillip Page, Kevin R Vincent, Heather K Vincent
BACKGROUND: Atraumatic lower limb amputation is a life-changing event for approximately 185,000 persons in the United States each year. A unilateral amputation is associated with rapid changes to the musculoskeletal system including leg and back muscle atrophy, strength loss, gait asymmetries, differential mechanical joint loading and leg length discrepancies. Even with high-quality medical care and prostheses, amputees still develop secondary musculoskeletal conditions such as chronic low back pain (LBP)...
December 29, 2017: Trials
https://www.readbyqxmd.com/read/29281768/genome-characterization-of-piscine-scale-drop-and-muscle-necrosis-syndrome-associated-strain-of-vibrio-harveyi-focusing-on-bacterial-virulence-determinants
#12
Pattanapon Kayansamruaj, Ha Thanh Dong, Ikuo Hirono, Hidehiro Kondo, Saengchan Senapin, Channarong Rodkhum
AIMS: Genomic characterization of Harveyi clade vibrio strain Y6 causing 'Scale drop and Muscle Necrosis syndrome' (SDMN) isolated from barramundi (Lates calcarifer) in Vietnam. METHODS AND RESULTS: A bacterial genome was sequenced using Illumina MiSeq platform. Multilocus sequence analysis confirmed that the bacterium belongs to Vibrio harveyi species. Further phylogenetic analysis inferred from core genome SNPs revealed a close relationship between our bacterium and the V...
December 27, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29281635/optical-silencing-of-body-wall-muscles-induces-pumping-inhibition-in-caenorhabditis-elegans
#13
Megumi Takahashi, Shin Takagi
Feeding, a vital behavior in animals, is modulated depending on internal and external factors. In the nematode Caenorhabditis elegans, the feeding organ called the pharynx ingests food by pumping driven by the pharyngeal muscles. Here we report that optical silencing of the body wall muscles, which drive the locomotory movement of worms, affects pumping. In worms expressing the Arch proton pump or the ACR2 anion channel in the body wall muscle cells, the pumping rate decreases after activation of Arch or ACR2 with light illumination, and recovers gradually after terminating illumination...
December 27, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/29280355/muscles-of-the-trunk-and-pelvis-are-responsive-to-testosterone-administration-data-from-testosterone-dose-response-study-in-young-healthy-men
#14
J Tapper, S Arver, K M Pencina, A Martling, L Blomqvist, C Buchli, Z Li, T Gagliano-Jucá, T G Travison, G Huang, T W Storer, S Bhasin, S Basaria
Testosterone dose-dependently increases appendicular muscle mass. However, the effects of testosterone administration on the core muscles of the trunk and the pelvis have not been evaluated. The present study evaluated the effects of testosterone administration on truncal and pelvic muscles in a dose-response trial. Participants were young healthy men aged 18-50 years participating in the 5α-Reductase (5aR) Trial. All participants received monthly injections of 7.5 mg leuprolide acetate to suppress endogenous testosterone production and weekly injections of 50, 125, 300, or 600 mg of testosterone enanthate and were randomized to receive either 2...
January 2018: Andrology
https://www.readbyqxmd.com/read/29279975/determining-the-optimal-number-of-core-needle-biopsy-passes-for-molecular-diagnostics
#15
Nam S Hoang, Benjamin H Ge, Lorraine Y Pan, Michael G Ozawa, Christina S Kong, John D Louie, Rajesh P Shah
PURPOSE: The number of core biopsy passes required for adequate next-generation sequencing is impacted by needle cut, needle gauge, and the type of tissue involved. This study evaluates diagnostic adequacy of core needle lung biopsies based on number of passes and provides guidelines for other tissues based on simulated biopsies in ex vivo porcine organ tissues. METHODS: The rate of diagnostic adequacy for pathology and molecular testing from lung biopsy procedures was measured for eight operators pre-implementation (September 2012-October 2013) and post-implementation (December 2013-April 2014) of a standard protocol using 20-gauge side-cut needles for ten core biopsy passes at a single academic hospital...
December 26, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29278453/functional-role-of-the-core-gap-in-the-middle-part-of-tropomyosin
#16
Alexander M Matyushenko, Daniil V Shchepkin, Galina V Kopylova, Sergey Y Bershitsky, Natalia A Koubassova, Andrey K Tsaturyan, Dmitrii I Levitsky
Tropomyosin (Tpm) is an α-helical coiled-coil actin-binding protein playing an essential role in the regulation of muscle contraction. The middle part of the Tpm molecule has some specific features, such as the presence of non-canonical residues as well as a substantial gap at the interhelical interface, which are believed to destabilize coiled-coil and impart structural flexibility to this part of the molecule. To study how the gap affects structural and functional properties of α-striated Tpm (Tpm1.1 isoform that is expressed in cardiac and skeletal muscles) we substituted large conserved apolar core residues located at both sides of the gap with smaller ones by mutations M127A/I130A and M141A/Q144A...
December 26, 2017: FEBS Journal
https://www.readbyqxmd.com/read/29276151/bmal1-deficiency-contributes-to-mandibular-dysplasia-by-upregulating-mmp3
#17
Jiajia Zhao, Xin Zhou, Qingming Tang, Ran Yu, Shaoling Yu, Yanlin Long, Cen Cao, Jun Han, Anbing Shi, Jeremy J Mao, Xiong Chen, Lili Chen
Skeletal mandibular hypoplasia (SMH), one of the common types of craniofacial deformities, seriously affects appearance, chewing, pronunciation, and breathing. Moreover, SMH is prone to inducing obstructive sleep apnea syndrome. We found that brain and muscle ARNT-like 1 (BMAL1), the core component of the molecular circadian oscillator, was significantly decreased in mandibles of juvenile SMH patients. Accordingly, SMH was observed in circadian-rhythm-disrupted or BMAL1-deficient mice. RNA sequencing and protein chip analyses suggested that matrix metallopeptidase 3 (MMP3) is the potential target of BMAL1...
December 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/29275983/the-association-of-vitamin-d-status-in-lower-extremity-muscle-strains-and-core-muscle-injuries-at-the-national-football-league-combine
#18
Brian J Rebolledo, Johnathan A Bernard, Brian C Werner, Andrea K Finlay, Benedict U Nwachukwu, David M Dare, Russell F Warren, Scott A Rodeo
PURPOSE: To evaluate the association between serum vitamin D level and the prevalence of lower extremity muscle strains and core muscle injuries in elite level athletes at the National Football League (NFL) combine. METHODS: During the 2015 NFL combine, all athletes with available serum vitamin D levels were included for study. Baseline data were collected, including age, race, body mass index, position, injury history specific to lower extremity muscle strain or core muscle injury, and Functional Movement Screen scores...
December 19, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29273087/comparison-of-multiple-transcriptomes-exposes-unified-and-divergent-features-of-quiescent-and-activated-skeletal-muscle-stem-cells
#19
Natalia Pietrosemoli, Sébastien Mella, Siham Yennek, Meryem B Baghdadi, Hiroshi Sakai, Ramkumar Sambasivan, Francesca Pala, Daniela Di Girolamo, Shahragim Tajbakhsh
BACKGROUND: Skeletal muscle satellite (stem) cells are quiescent in adult mice and can undergo multiple rounds of proliferation and self-renewal following muscle injury. Several labs have profiled transcripts of myogenic cells during the developmental and adult myogenesis with the aim of identifying quiescent markers. Here, we focused on the quiescent cell state and generated new transcriptome profiles that include subfractionations of adult satellite cell populations, and an artificially induced prenatal quiescent state, to identify core signatures for quiescent and proliferating...
December 22, 2017: Skeletal Muscle
https://www.readbyqxmd.com/read/29249454/biomechanical-consequences-of-running-with-deep-core-muscle-weakness
#20
Margaret E Raabe, Ajit M W Chaudhari
The deep core muscles are often neglected or improperly trained in athletes. Improper function of this musculature may lead to abnormal spinal loading, muscle strain, or injury to spinal structures, all of which have been associated with increased low back pain (LBP) risk. The purpose of this study was to identify potential strategies used to compensate for weakness of the deep core musculature during running and to identify accompanying changes in compressive and shear spinal loads. Kinematically-driven simulations of overground running were created for eight healthy young adults in OpenSim at increasing levels of deep core muscle weakness...
December 6, 2017: Journal of Biomechanics
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