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https://www.readbyqxmd.com/read/28637335/astrocyte-produced-mir-146a-as-a-mediator-of-motor-neuron-loss-in-spinal-muscular-atrophy
#1
Samantha L Sison, Teresa N Patitucci, Emily R Seminary, Eric Villalon, Christian L Lorson, Allison D Ebert
Spinal muscular atrophy (SMA), the leading genetic cause of infant mortality, is caused by loss of the survival motor neuron-1 (SMN1) gene, which leads to motor neuron loss, muscle atrophy, respiratory distress, and death. Motor neurons exhibit the most profound loss, but the mechanisms underlying disease pathogenesis are not fully understood. Recent evidence suggests that motor neuron extrinsic influences, such as those arising from astrocytes, contribute to motor neuron malfunction and loss. Here we investigated both loss-of-function and toxic gain-of-function astrocyte mechanisms that could play a role in SMA pathology...
June 15, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28637297/a-role-for-progesterone-regulated-sfrp4-expression-in-uterine-leiomyomas
#2
Meaghan A Delaney, Ying-Wooi Wan, Gyoung-Eun Kim, Chad J Creighton, Margaret G Taylor, Ramya Masand, Andrew Park, Cecilia Valdes, William Gibbons, Zhandong Liu, Matthew L Anderson
Context: Despite progesterone's key role in uterine smooth muscle tumorigenesis, the mechanisms by which it promotes the growth of uterine leiomyomas remain poorly understood. Objective: The aim of this study was to identify novel gene products mediating progesterone's effects in uterine leiomyomas. Design: Gene expression profiling was used to identify putative progesterone-regulated genes differentially expressed in uterine leiomyomas, which were then studied in vitro...
June 14, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28637233/identification-of-exosomal-muscle-specific-mirnas-in-serum-of-myotonic-dystrophy-patients-relating-to-muscle-disease-progress
#3
Andrie Koutsoulidou, Marinos Photiades, Tassos C Kyriakides, Kristia Georgiou, Marianna Prokopi, Konstantinos Kapnisis, Anna Lusakowska, Marianna Nearchou, Yiolanda Christou, George K Papadimas, Andreas Anayiotos, Kyriakos Kyriakou, Evangelia Kararizou, Eleni Zamba Papanicolaou, Leonidas A Phylactou
Myotonic dystrophy type 1 (DM1) is the most common form of adult-onset muscular dystrophy, which is characterised by progressive muscle wasting and the discovery of reliable blood-based biomarkers could be useful for the disease progress monitoring. There have been some reports showing that the presence of specific miRNAs in blood correlate with DM1. In one of these, our group identified four muscle-specific miRNAs, miR-1, miR-133a, miR-133b and miR-206, which correlated with the progression of muscle wasting observed in DM1 patients...
June 16, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28637129/patient-reported-outcomes-in-gne-myopathy-incorporating-a-valid-assessment-of-physical-function-in-a-rare-disease
#4
Christina Slota, Margaret Bevans, Li Yang, Joseph Shrader, Galen Joe, Nuria Carrillo
BACKGROUND: The aim of this analysis was to evaluate the psychometric properties of three patient reported outcome (PRO) measures characterizing physical function in GNE myopathy: the Human Activity Profile, the Inclusion Body Myositis Functional Rating Scale, and the Activities-specific Balance Confidence scale. METHODS: This analysis used data from 35 GNE myopathy subjects participating in a natural history study. For construct validity, correlational and known-group analyses were between the PROs and physical assessments...
February 7, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28637125/bilateral-movements-increase-sustained-extensor-force-in-the-paretic-arm
#5
Nyeonju Kang, James H Cauraugh
PURPOSE: Muscle weakness in the extensors poststroke is a common motor impairment. Unfortunately, research is unclear on whether bilateral movements increase extensor force production in the paretic arm. This study investigated sustained force production while stroke individuals maximally extended their wrist and fingers on their paretic arm. Specifically, we determined isometric force production in three conditions: (a) unilateral paretic arm, (b) unilateral nonparetic arm, and (c) bilateral (both arms executing the same movement simultaneously)...
February 6, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28637074/-nutrition-in-cancer-effective-in-prevention-and-treatment
#6
Jann Arends
Nutritional effects on cancer occurrence and on treatment outcome in cancer patients may depend on food preferences and on the quantity of foods supplied. However, it has been difficult to reliably show beneficial effects of specific dietary concepts on cancer incidence. On the other hand, obesity as a result of chronic overfeeding has been linked firmly to an increased risk of a number of cancers as well as on cancer recurrence after treatment. Metabolic consequences of obesity and other components of the metabolic syndrome may be responsible for inducing and/or promoting cancer growth and should be antagonized by regular moderate physical activity in healthy subjects and in cancer survivors...
June 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28636949/cloning-expression-and-nutritional-regulation-of-the-glutamine-synthetase-gene-in-ctenopharyngodon-idellus
#7
Rong Hu, Fufa Qu, Jianzhou Tang, Qiong Zhao, Jinpeng Yan, Zhigang Zhou, Yi Zhou, Zhen Liu
Glutamine synthetase (GS) is considered a master enzyme that catalyses ATP-dependent biosynthesis of glutamine from glutamate. In the present study, the GS gene was cloned from the intestine of grass carp, (Ctenopharyngodon idellus). The full-length cDNA sequence of GS encodes a 371-amino-acid polypetide. Phylogenetic analysis of the C. idellus GS sequence reveals common carp (Cyprinus carpio) as its closest neighbor. GS mRNA was differentially expressed in different tissues, with high to low gradient expression the intestine, brain, muscle, heart, gill, liver, pituitary gland, and spleen...
June 18, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28636750/comparison-of-serum-vaspin-levels-and-vaspin-expression-in-adipose-tissue-and-smooth-muscle-tissue-in-pregnant-women-with-and-without-gestational-diabetes
#8
Yuping Tang, Ping Qiao, Xiaoxian Qu, Yirong Bao, Yuhong Li, Yini Liao, Hao Ying
OBJECTIVE: Vaspin is associated with metabolic parameters and insulin resistance. However, the expression of vaspin in visceral adipose tissue (VAT) in pregnant women with gestational diabetes mellitus (GDM) has not been fully explored, and the contribution of vaspin to the biological mechanisms underlying GDM remains unclear. This study aimed to compare circulating vaspin levels and its expression in different insulin target tissues including subcutaneous adipose tissue (SAT), VAT, and smooth muscle tissue (SMT) in pregnant women with and without GDM...
June 21, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28636643/neuromuscular-electrical-stimulation-prevents-skeletal-muscle-dysfunction-in-adjuvant-induced-arthritis-rat
#9
Koichi Himori, Daisuke Tatebayashi, Keita Kanzaki, Masanobu Wada, Håkan Westerblad, Johanna T Lanner, Takashi Yamada
Skeletal muscle weakness is a prominent feature in patients with rheumatoid arthritis (RA). In this study, we investigated whether neuromuscular electrical stimulation (NMES) training protects against skeletal muscle dysfunction in rats with adjuvant-induced arthritis (AIA). AIA was produced by intraarticular injection of complete Freund's adjuvant into the knees of Wistar rats. For NMES training, dorsiflexor muscles were stimulated via a surface electrode (0.5 ms pulse, 50 Hz, 2 s on/4 s off). NMES training was performed every other day for three weeks and consisted of three sets produced at three min intervals...
2017: PloS One
https://www.readbyqxmd.com/read/28636566/detection-of-muscle-gap-by-l-bia-in-muscle-injuries-clinical-prognosis
#10
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/28636528/three-dimensional-reconstruction-of-energy-stores-for-jumping-in-planthoppers-and-froghoppers-from-confocal-laser-scanning-microscopy
#11
Igor Siwanowicz, Malcolm Burrows
Jumping in planthopper and froghopper insects is propelled by a catapult-like mechanism requiring mechanical storage of energy and its quick release to accelerate the hind legs rapidly. To understand the functional biomechanics involved in these challenging movements, the internal skeleton, tendons and muscles involved were reconstructed in 3-D from confocal scans in unprecedented detail. Energy to power jumping was generated by slow contractions of hind leg depressor muscles and then stored by bending specialised elements of the thoracic skeleton that are composites of the rubbery protein resilin sandwiched between layers of harder cuticle with air-filled tunnels reducing mass...
June 21, 2017: ELife
https://www.readbyqxmd.com/read/28636505/the-effect-of-aerobic-interval-training-and-continuous-training-on-exercise-capacity-and-its-determinants
#12
Nele Pattyn, Paul J Beckers, Véronique A Cornelissen, Ellen Coeckelberghs, Catherine De Maeyer, Geert Frederix, Kaatje Goetschalckx, Nadine Possemiers, Dirk Schepers, Emeline M Van Craenenbroeck, Kurt Wuyts, Viviane M Conraads, Luc Vanhees
Objective We aimed to investigate (1) the effects of aerobic interval training (AIT) and aerobic continuous training (ACT) on (sub)maximal exercise measures and its determinants including endothelial function, muscle strength and cardiac autonomic function, and (2) the relationship between exercise capacity and these determinants. Methods Two-hundred coronary artery disease (CAD) patients (58.4 ± 9.1 years) were randomized to AIT or ACT for 12 weeks. All patients performed a cardiopulmonary exercise test and endothelial function measurements before and after the intervention; a subpopulation underwent muscle strength and heart rate variability (HRV) assessments...
March 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28636434/selective-breeding-and-short-term-access-to-a-running-wheel-alter-stride-characteristics-in-house-mice
#13
Gerald C Claghorn, Zoe Thompson, Jarren C Kay, Genesis Ordonez, Thomas G Hampton, Theodore Garland
Postural and kinematic aspects of running may have evolved to support high runner (HR) mice to run approximately threefold farther than control mice. Mice from four replicate HR lines selectively bred for high levels of voluntary wheel running show many differences in locomotor behavior and morphology as compared with four nonselected control (C) lines. We hypothesized that HR mice would show stride alterations that have coadapted with locomotor behavior, morphology, and physiology. More specifically, we predicted that HR mice would have stride characteristics that differed from those of C mice in ways that parallel some of the adaptations seen in highly cursorial animals...
September 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28636407/pulmonary-endpoints-in-duchenne-muscular-dystrophy-a-workshop-summary
#14
Jonathan Finder, Oscar Henry Mayer, Daniel Sheehan, Hemant Sawnani, R Ted Abresch, Joshua Benditt, David J Birnkrant, Tina Duong, Erik Henricson, Kathi Kinnett, Craig M McDonald, Anne M Connolly
Development of novel therapeutics for treatment of Duchenne muscular dystrophy (DMD) has led to clinical trials that include pulmonary endpoints that allow assessment of respiratory muscle status, especially in non-ambulatory subjects. Parent Project Muscular Dystrophy (PPMD) convened a workshop in Bethesda, MD from April 14-15, 2016 to summarize published respiratory data in DMD and give guidance to clinical researchers assessing the effect of interventions on pulmonary outcomes in DMD.
June 21, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28636322/spirally-structured-conductive-composites-for-highly-stretchable-robust-conductors-and-sensors
#15
Xiaodong Wu, Yangyang Han, Xinxing Zhang, Canhui Lu
Flexible and stretchable electronics are highly desirable for next generation devices. However, stretchability and conductivity are fundamentally difficult to combine for conventional conductive composites, which restricts their widespread applications especially as stretchable electronics. Here, we innovatively develop a new class of highly stretchable and robust conductive composites via a simple and scalable structural approach. Briefly, carbon nanotubes are spray-coated onto a self-adhesive rubber film, followed by rolling up the film completely to create a spirally layered structure within the composites...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28636312/combining-protein-and-mirna-quantification-for-bladder-cancer-analysis
#16
Ruixue Duan, Zhenyu Zhang, Fuxin Zheng, Longwang Wang, Ju Guo, Tianchi Zhang, Xiaomeng Dai, Shengwei Zhang, Dong Yang, Renrui Kuang, Gongxian Wang, Chaohong He, Abdul Hakeem, Chang Shu, Ping Yin, Xiaoding Lou, Fuqing Zeng, Huageng Liang, Fan Xia
We combine the telomerase extension reaction and microRNA (miRNA)-induced rolling circle amplification, followed by graphene oxide (GO) and nicking enzyme assisted signal amplification, to analyze telomerase and miRNA 21 in urine samples with following merits. Firstly, it is a binary assay and can simultaneously output double signals which corresponds to the quantities of telomerase and miRNA, respectively. Secondly, telomerase activity is firstly enhanced by using DNA molecular beacon probe to inhibit the formation of G-quadruplex...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28635988/salivary-epithelial-myoepithelial-carcinoma-clinical-morphological-and-molecular-features
#17
R De Cecio, M Cantile, F Fulciniti, G Botti, M P Foschini, N S Losito
Epithelial-myoepithelial carcinoma (EMC) is a rare biphasic tumor accounting for less than 2% of all salivary gland malignancies. It presents as a slowly growing, asymptomatic small size mass, with ulceration of overlying mucosa in some cases. Microscopically, it is characterized by glands lined by the simultaneous presence of two different cell components, inner epithelial cells and outer myoepithelial cells. Immunohistochemical staining of myoepithelial cells is variably positive for vimentin, Smooth Muscle Actin (SMA), Muscle Specific Actin (MSA), S100, Smooth Muscle Myosin Heavy Chain I(SM-MHC), calponin and p63...
March 2017: Pathologica
https://www.readbyqxmd.com/read/28635954/phenotypic-extremes-of-bicd2-opathies-from-lethal-congenital-muscular-atrophy-with-arthrogryposis-to-asymptomatic-with-subclinical-features
#18
Markus Storbeck, Beate Horsberg Eriksen, Andreas Unger, Irmgard Hölker, Ingvild Aukrust, Lilian A Martínez-Carrera, Wolfgang A Linke, Andreas Ferbert, Raoul Heller, Matthias Vorgerd, Gunnar Houge, Brunhilde Wirth
Heterozygous variants in BICD cargo adapter 2 (BICD2) cause autosomal dominant spinal muscular atrophy, lower extremity-predominant 2 (SMALED2). The disease is usually characterized by a benign or slowly progressive, congenital or early onset muscle weakness and atrophy that mainly affects the lower extremities, although some affected individuals show involvement of the arms and the shoulder girdle. Here we report unusual extremes of BICD2-related diseases: A severe form of congenital muscular atrophy with arthrogryposis multiplex, respiratory insufficiency and lethality within four months...
June 21, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28635679/the-role-of-angiogenesis-in-cancer-treatment
#19
REVIEW
Mehdi Rajabi, Shaker A Mousa
A number of anti-angiogenesis drugs have been FDA-approved and are being used in cancer treatment, and a number of other agents are in different stages of clinical development or in preclinical evaluation. However, pharmacologic anti-angiogenesis strategies that arrest tumor progression might not be enough to eradicate tumors. Decreased anti-angiogenesis activity in single mechanism-based anti-angiogenic strategies is due to the redundancy, multiplicity, and development of compensatory mechanism by which blood vessels are remodeled...
June 21, 2017: Biomedicines
https://www.readbyqxmd.com/read/28635632/glucose-and-lipid-dysmetabolism-in-a-rat-model-of-prediabetes-induced-by-a-high-sucrose-diet
#20
Ana Burgeiro, Manuela G Cerqueira, Bárbara M Varela-Rodríguez, Sara Nunes, Paula Neto, Frederico C Pereira, Flávio Reis, Eugénia Carvalho
Glucotoxicity and lipotoxicity are key features of type 2 diabetes mellitus, but their molecular nature during the early stages of the disease remains to be elucidated. We aimed to characterize glucose and lipid metabolism in insulin-target organs (liver, skeletal muscle, and white adipose tissue) in a rat model treated with a high-sucrose (HSu) diet. Two groups of 16-week-old male Wistar rats underwent a 9-week protocol: HSu diet (n = 10)-received 35% of sucrose in drinking water; Control (n = 12)-received vehicle (water)...
June 21, 2017: Nutrients
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