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https://www.readbyqxmd.com/read/28806771/effect-of-knee-alignment-on-the-quadriceps-femoris-muscularity-cross-sectional-comparison-of-trained-versus-untrained-individuals-in-both-sexes
#1
Ryoichi Ema, Taku Wakahara, Kuniaki Hirayama, Yasuo Kawakami
Knee alignment is suggested to be a factor affecting each quadriceps femoris muscle size, and knee alignment such as Q-angle differs between men and women. Also, training can induce inhomogeneous hypertrophy among the quadriceps femoris, thereby leading to different component characteristics of the muscles. If Q-angle is a major determinant of the quadriceps femoris muscularity, it is hypothesized that the sex-related difference in the quadriceps femoris muscularity, if any, is further highlighted in trained individuals, being associated with Q-angle...
2017: PloS One
https://www.readbyqxmd.com/read/28806216/psoas-versus-femoral-blocks-a-registry-analysis-of-risks-and-benefits
#2
Hagen Bomberg, Andrea Huth, Stefan Wagenpfeil, Paul Kessler, Hinnerk Wulf, Thomas Standl, André Gottschalk, Jens Döffert, Werner Hering, Jürgen Birnbaum, Claudia Spies, Bernd Kutter, Jörg Winckelmann, Gerald Burgard, Oliver Vicent, Thea Koch, Daniel I Sessler, Thomas Volk, Alexander Raddatz
BACKGROUND AND OBJECTIVES: Psoas blocks are an alternative to femoral nerve blocks and have the potential advantage of blocking the entire lumbar plexus. However, the psoas muscle is located deeply, making psoas blocks more difficult than femoral blocks. In contrast, while femoral blocks are generally easy to perform, the inguinal region is prone to infection. We thus tested the hypothesis that psoas blocks are associated with more insertion-related complications than femoral blocks but have fewer catheter-related infections...
August 11, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28805932/muscle-thickness-correlates-to-muscle-cross-sectional-area-in-the-assessment-of-strength-training-induced-hypertrophy
#3
Martino V Franchi, Stefano Longo, Joanne Mallinson, Jonathan I Quinlan, Tariq Taylor, Paul L Greenhaff, Marco V Narici
AIM: Muscle thickness (MT) measured by ultrasound has been used to estimate cross-sectional area (measured by CT and MRI) at a single time-point. We tested whether MT could be used as a valid marker of MRI determined muscle anatomical cross-sectional area (ACSA) and volume changes following resistance training (RT). METHODS: Nine healthy, young, male volunteers (24±2 y.o., BMI 24.1±2.8 kg/m(2) ) had vastus lateralis (VL) muscle volume (VOL) and ACSA mid (at 50% of femur length, FL) assessed by MRI, and VL MT measured by ultrasound at 50% FL...
August 14, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28805903/chronic-activation-of-amp-activated-protein-kinase-increases-monocarboxylate-transporter-2-and-4-expression-in-skeletal-muscle
#4
E M England, H Shi, S K Matarneh, E M Oliver, E T Helm, T L Scheffler, E Puolanne, D E Gerrard
Acute activation of AMP-activated protein kinase (AMPK) increases monocarboxylate transporter (MCT) expression in skeletal muscle. However, the impact of chronic activation of AMPK on MCT expression in skeletal muscle is unknown. To investigate, MCT1, MCT2, and MCT4 mRNA expression and protein abundance were measured in the longissimus lumborum (glycolytic), masseter (oxidative), and heart from wild-type (control) and AMPK γ3 pigs. The AMPK γ3 gain in function mutation results in AMPK being constitutively active in glycolytic skeletal muscle and increases energy producing pathways...
August 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28804474/a-longitudinal-electromyography-study-of-complex-movements-in-poststroke-therapy-1-heterogeneous-changes-despite-consistent-improvements-in-clinical-assessments
#5
Negin Hesam-Shariati, Terry Trinh, Angelica G Thompson-Butel, Christine T Shiner, Penelope A McNulty
Poststroke weakness on the more-affected side may arise from reduced corticospinal drive, disuse muscle atrophy, spasticity, and abnormal coordination. This study investigated changes in muscle activation patterns to understand therapy-induced improvements in motor-function in chronic stroke compared to clinical assessments and to identify the effect of motor-function level on muscle activation changes. Electromyography (EMG) was recorded from five upper limb muscles on the more-affected side of 24 patients during early and late therapy sessions of an intensive 14-day program of Wii-based Movement Therapy (WMT) and for a subset of 13 patients at 6-month follow-up...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28803796/shoulder-muscle-activation-patterns-and-levels-differ-between-open-and-closed-chain-abduction
#6
Darren Reed, Ian Cathers, Mark Halaki, Karen A Ginn
OBJECTIVES: Open and closed-chain abduction of the shoulder are commonly used in rehabilitation and exercise programs to assess and/or improve shoulder muscle function. However, it is not known if shoulder muscle activation patterns differ between these two exercises. Therefore the purpose of this study was to compare muscle activation patterns during closed-chain shoulder abduction performed using a shoulder press machine with open-chain abduction using free weights. DESIGN: Experimental study...
August 2, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28803542/spin-infection-enables-efficient-gene-delivery-to-muscle-stem-cells
#7
Yusaku Kodaka, Yoko Asakura, Atsushi Asakura
Viral vector-mediated foreign gene expression in cultured cells has been extensively used in stem cell studies to explore gene function. However, it is difficult to obtain high-quality stem cells and primary cells after viral vector infection. Here, we describe a new protocol for high-efficiency retroviral infection of primary muscle stem cell (satellite cell) cultures. We compared multiple commercially available transfection reagents to determine which was optimal for retroviral infections of primary myoblasts...
August 1, 2017: BioTechniques
https://www.readbyqxmd.com/read/28803536/bovine-viral-diarrhea-virus-1b-fetal-infection-with-extensive-hemorrhage
#8
Robert W Fulton, Anthony W Confer, Nicholas J Sorensen, Julia F Ridpath, Lurinda J Burge
Bovine viral diarrhea virus (BVDV) 1b was isolated from tissues of a term bovine fetus with petechial hemorrhages noted throughout the body and placenta at autopsy. Fresh lung, kidney, thymus, and liver tissues were examined by direct fluorescent antibody testing and were positive for BVDV antigen and negative for bovine herpesvirus 1 antigen. An organ pool of fresh tissues was positive for noncytopathic (NCP) BVDV-1 by virus isolation. BVDV-1b was identified by sequencing of the 5'-UTR region of the genome...
August 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28802637/blood-pressure-responses-to-dietary-sodium-association-with-autonomic-cardiovascular-function-in-normotensive-adults
#9
Evan L Matthews, Michael S Brian, David G Edwards, Sean D Stocker, Megan M Wenner, William B Farquhar
Blood pressure responses to dietary sodium vary widely person-to-person. Salt sensitive rodent models display altered autonomic function, a trait thought to contribute to poor cardiovascular health. Thus, we hypothesized that increased salt sensitivity (SS) in normotensive humans would be associated with increased muscle sympathetic nerve activity (MSNA), decreased high frequency heart rate variability (HF-HRV), and decreased baroreflex sensitivity. Healthy normotensive men and women completed 1week of high (300mmol·day(-1)) and 1week of low (20mmol·day(-1)) dietary sodium (random order) with 24h mean arterial pressure (MAP) assessed on the last day of each diet to assess SS...
August 6, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28802435/gait-characteristics-in-women-s-safety-shoes
#10
Kanako Goto, Kaoru Abe
Although workers in Japan are required to wear safety footwear, there is concern about occupational accidents that occur when wearing safety shoes. This study aimed to analyze the effect of wearing hardsoled safety shoes on both spatiotemporal gait characteristics and the muscle activity in the lower extremities. Seventeen young women participated in this study. A 5-m gait trial and a surface electromyography trial were conducted while the women walked in either safety shoes or sports shoes. Paired t-tests were performed to analyze the differences in gait characteristics when walking in the two different pairs of shoes...
November 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28802220/comparison-of-lower-limb-muscle-strength-between-diabetic-neuropathic-and-healthy-subjects-using-opensim
#11
Alessandra Scarton, Ilse Jonkers, Annamaria Guiotto, Fabiola Spolaor, Gabriella Guarneri, Angelo Avogaro, Claudio Cobelli, Zimi Sawacha
Diabetes neuropathy and vasculopathy are the two major complications of diabetes mellitus, leading to diabetic foot disease, of which the worst consequences are plantar ulcers and amputations. Motor impairments like joint stiffness and loss of balance are distinctive effects of diabetes and they have been extensively explored. However, while altered muscle function has been also assessed through experimentally measured surface electromyography, little is known about muscle forces. The objective of this study was to estimate muscle forces in subjects with diabetes and to use these data to identify differences with respect to a population of healthy subjects matched for age and BMI...
July 31, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28802071/microrna-137-and-195-inhibit-vasculogenesis-in-brain-arteriovenous-malformations
#12
Jun Huang, Jianping Song, Meijie Qu, Yang Wang, Qinzhu An, Yaying Song, Wei Yan, Bingshun Wang, Xiaojin Wang, Song Zhang, Xi Chen, Bing Zhao, Peixi Liu, Tongyi Xu, Zhijun Zhang, David A Greenberg, Yongting Wang, Pingjin Gao, Wei Zhu, Guo-Yuan Yang
OBJECTIVES: Brain arteriovenous malformations (AVMs) are the most common cause of non-traumatic intracerebral hemorrhage in young adults. The genesis of brain AVM remains enigmatic. We investigated microRNA (miRNA) expression and its contribution to the pathogenesis of brain AVMs. METHODS: We used a large-scale miRNA analysis on 16 samples including AVMs, hemangioblastoma, and controls to identify a distinct AVM miRNA signature. AVM smooth muscle cells (AVMSMCs) were isolated and identified by flow cytometry and immunohistochemistry and candidate miRNAs were then tested in these cells...
August 12, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28801407/the-boundaries-of-mild-chronic-obstructive-pulmonary-disease-copd-design-of-the-searching-clinical-copd-onset-soon-study
#13
Gonzalo Labarca, Andrea Bustamante, Gonzalo Valdivia, Rodrigo Díaz, Álvaro Huete, Paul Mac Nab, Laura Mendoza, Jaime Leppe, Carmen Lisboa, Fernando Saldías, Orlando Díaz
INTRODUCTION: Clinical onset of chronic obstructive pulmonary disease (COPD) is the point at which the disease is first identifiable by physicians. It is a poorly defined stage which seems to include both mild spirometric and non-spirometric disease, and could be described as early grade COPD, for practical purposes. While dyspnoea; chronic bronchitis and CT imaging evidence of emphysema and airway disease may be present very early, the lone significance of dyspnoea, the most relevant symptom in COPD in identifying these individuals, has been scarcely assessed...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28801199/repositioning-the-scapula-with-taping-following-distal-radius-fracture-kinematic-analysis-using-3-dimensional-motion-system
#14
Elif Turgut, Cigdem Ayhan, Gul Baltaci
STUDY DESIGN: Cross-sectional and controlled laboratory study using pretest-posttest design. INTRODUCTION: Patients with distal radius fracture (DRfx) report proximal segment problems. Taping is commonly recommended because it provides improved posture and function. PURPOSE OF THE STUDY: This study aimed to investigate the 3-dimensional scapular kinematics and the effect of taping on the kinematics in participants with DRfx. METHODS: Twenty participants with a unilateral history of DRfx and 20 healthy controls participated...
August 8, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28801079/re-raising-muscle-flaps-a-randomised-controlled-animal-study
#15
K Bradshaw, M Wagels
BACKGROUND: In the experience of our centre, 33% of reconstructed compound lower limb injuries will need an orthopaedic revision.(1) A flap may be re-raised through numerous methods, and historically, the approach of choice has been based on the principle of protecting the vascular pedicle rather than the inset. Our aim was to determine whether a marginal versus a split approach to re-raising inferred a higher risk of flap necrosis and whether more attention should be paid to protecting the inset of the flap, particularly at the distal portion...
July 18, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28800843/discectomy-without-replacement-improves-function-in-patients-with-internal-derangement-of-the-temporomandibular-joint
#16
Michael Miloro, Matthew McKnight, Michael D Han, Michael R Markiewicz
PURPOSE: Treatment of internal derangement is controversial. This study assessed the effectiveness of discectomy without replacement in improving jaw function and decreasing pain. MATERIALS AND METHODS: A retrospective cohort study sample of subjects with internal derangement underwent discectomy without replacement by one surgeon at a single academic medical center. The primary predictor variables were preoperative maximal incisal opening (MIO) and Helkimo Clinical Dysfunction Index (CDI) score...
July 17, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28800680/pharmacological-inhibition-of-fsgs-related-trpc6-gain-of-function-mutants-by-semisynthetic-larixol-derived-compounds
#17
Nicole Urban, Sonja Neuser, Anika Hentschel, Sebastian Köhling, Jörg Rademann, Michael Schaefer
BACKGROUND AND PURPOSE: Gain of function mutations in TRPC6 can cause autosomal dominant forms of focal segmental glomerulosclerosis (FSGS). Validated inhibitors of TRPC6 that are biologically active on FSGS-related TRPC6 mutants are eagerly sought. EXPERIMENTAL APPROACH: We synthesized new TRPC6-inhibiting modulators from larixol, a resiniferous constituent of Larix decidua, and tested the potency and selectivity in cell lines stably expressing various TRP channel isoforms...
August 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28800677/levothyroxine-enhances-glucose-clearance-and-blunts-the-onset-of-experimental-type-1-diabetes-mellitus-in-mice
#18
Livia López-Noriega, Nadia Cobo-Vuilleumier, Álvaro Jesús Narbona-Pérez, Juan Luis Araujo-Garrido, Petra Isabel Lorenzo, José Manuel Mellado-Gil, José Carlos Moreno, Benoit R Gauthier, Alejandro Martín-Montalvo
BACKGROUND AND PURPOSE: Thyroid hormones induce several changes in whole body metabolism that are known to improve metabolic homeostasis. However, adverse side effects have prevented its use in the clinic. In view of the promising effects of thyroid hormones, we investigated the effects of levothyroxine supplementation in glucose. EXPERIMENTAL APPROACH: C57BL/6 mice were treated with levothyroxine from birth to 24 weeks of age, when mice were euthanized. The effects of levothyroxine supplementation on metabolic health were determined...
August 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28800307/dynamic-trunk-muscle-endurance-profile-in-adolescents-aged-14-18-normative-values-for-age-and-gender-differences
#19
Manuel Moya-Ramón, Casto Juan-Recio, Diego Lopez-Plaza, Francisco Jose Vera-Garcia
BACKGROUND: The selection and validation of age- and gender-specific criterion-referenced cut-points for abdominal endurance are still unclear. OBJECTIVE: To stablish normative values for abdominal endurance in adolescents by age and gender using the Bench Trunk Curl-up Test (BTC). Additionally, the reliability of the BTC was analyzed. METHODS: Two hundred and sixteen untrained high school students (104 males - 112 females) were grouped into five age strata...
July 2, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28800306/acute-effects-of-kinesio-taping-on-pain-disability-and-back-extensor-muscle-endurance-in-patients-with-low-back-pain-caused-by-magnetic-resonance-imaging-confirmed-lumbar-disc-degeneration
#20
Nai-Jen Chang, Willy Chou, Pei-Chi Hsiao, Wen-Dien Chang, Yi-Ming Lo
BACKGROUND: Individuals with disc degeneration experience associated pain and disability. Considering its safety and affordability, Kinesio tape (KT) may be a viable treatment. However, most KT studies have demonstrated its effects in healthy adults and patients with nonspecific low back pain. The efficacy of KT in patients with disc degeneration is yet to be investigated. OBJECTIVES: To examine the acute effects of KT on patients with lumbar disc degeneration confirmed through magnetic resonance imaging...
August 4, 2017: Journal of Back and Musculoskeletal Rehabilitation
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