keyword
MENU ▼
Read by QxMD icon Read
search

Muscle atrophy

keyword
https://www.readbyqxmd.com/read/29150943/muscle-regeneration-potential-and-satellite-cell-activation-profile-during-recovery-following-hindlimb-immobilization-in-mice
#1
Maria Guitart, Josep Lloreta, Laura Mañas-Garcia, Esther Barreiro
Reduced muscle activity leads to muscle atrophy and function loss in patients and animal models. Satellite cells (SCs) are postnatal muscle stem cells that play a pivotal role in skeletal muscle regeneration following injury. The regenerative potential, satellite cell numbers, and markers during recovery following immobilization of the hindlimb for seven days were explored. In mice exposed to seven days of hindlimb immobilization, in those exposed to recovery (seven days, splint removal), and in contralateral control muscles, muscle precursor cells were isolated from all hindlimb muscles (fluorescence-activated cell sorting, FACS), and SCs and muscle regeneration were identified using immunofluorescence (gastrocnemius and soleus) and electron microscopy (EM, gastrocnemius)...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29150918/central-role-of-transforming-ggrowth-factor-type-beta-1-in-skeletal-muscle-dysfunctions-an-update-on-therapeutic-strategies
#2
Johanna Abrigo, Felipe Simon, Daniel Cabrera, Gonzalo Cordova, Capucine Trollet, Claudio Cabello Verrugio
Among the soluble factors that regulate skeletal muscle function, Transforming Growth Factor type Beta 1 (TGF-b1) is one of the most studied. This factor inhibits myogenesis and regeneration by regulating the activity and function of satellite cells (SCs). Indeed, TGF-b has a central role in muscle pathologies in which there is development of fibrosis and/or atrophy of skeletal muscle. Thus, in this review we present the critical and recent antecedents regarding the mechanisms and cellular targets involved in the effects of TGF-b1 in the muscle, in pathological processes such as the inhibition of regeneration, fibrosis and atrophy...
November 16, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/29147923/anti-aminoacyl-trna-synthetase-related-myositis-and-dermatomyositis-clues-for-differential-diagnosis-on-muscle-biopsy
#3
Bruna Cerbelli, Annalinda Pisano, Serena Colafrancesco, Maria Gemma Pignataro, Marco Biffoni, Silvia Berni, Antonia De Luca, Valeria Riccieri, Roberta Priori, Guido Valesini, Giulia d'Amati, Carla Giordano
Anti-synthetase syndrome is an autoimmune disease characterized by autoantibodies toward amino acyl-tRNA synthetases (ARS), anti-Jo 1 being the most commonly detected. Muscle damage develops in up to 90% of ARS-positive patients, characterized by a necrotizing myositis restricted to the perifascicular region. This topographic distribution of muscle damage may lead to a misdiagnosis of dermatomyositis (DM) at muscle biopsy. We compared morphological, immunohistochemical, and histoenzymatic features of muscle from ARS-positive patients (n = 11) with those of DM (n = 7) providing clues for their differential diagnosis...
November 16, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29147668/do-magnetic-resonance-imaging-characteristics-of-full-thickness-rotator-cuff-tears-correlate-with-sleep-disturbance
#4
Bryan A Reyes, Brandon R Hull, Alexander B Kurth, Nathan R Kukowski, Edward P Mulligan, Michael S Khazzam
Background: Many patients with rotator cuff tears suffer from nocturnal shoulder pain, resulting in sleep disturbance. Purpose: To determine whether rotator cuff tear size correlated with sleep disturbance in patients with full-thickness rotator cuff tears. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Patients with a diagnosis of unilateral full-thickness rotator cuff tears (diagnosed via magnetic resonance imaging [MRI]) completed the Pittsburgh Sleep Quality Index (PSQI), a visual analog scale (VAS) quantifying their shoulder pain, and the American Shoulder and Elbow Surgeons (ASES) questionnaire...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29146735/reduced-dnmt3a-increases-gdf5-expression-with-suppressed-satellite-cell-differentiation-and-impaired-skeletal-muscle-regeneration
#5
Yukino Hatazawa, Yusuke Ono, Yuma Hirose, Sayaka Kanai, Nobuharu L Fujii, Shuichi Machida, Ichizo Nishino, Takahiko Shimizu, Masaki Okano, Yasutomi Kamei, Yoshihiro Ogawa
DNA methylation is an epigenetic mechanism regulating gene expression. In this study, we observed that DNA methyltransferase 3a (Dnmt3a) expression is decreased after muscle atrophy. We made skeletal muscle-specific Dnmt3a knockout mice (Dnmt3a-KO mice). The regeneration capacity after muscle injury was markedly decreased in Dnmt3a-KO mice. Diminished mRNA and protein expression of Dnmt3a were observed in skeletal muscles as well as in satellite cells, which are important for muscle regeneration, in Dnmt3a-KO mice...
November 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29145189/rem-sleep-behavior-disorder
#6
Claudio L Bassetti, Panagiotis Bargiotas
Rapid eye movement sleep behavior disorder (RBD) is a brain disorder, characterized by the dream enactment during rapid eye movement (REM) sleep due to a lack of physiologic muscle atonia and increased muscle twitching. Schenk was the first to describe this disorder in 1986; however, few authors reported in the 1970-1980s loss of physiological muscle atonia combined with dream enactment in the course of brainstem disorders and as a consequence of alcoholism and antidepressant treatment. RBD affects less than 1% of the adult population, but can be found in up to 25-50% of neurodegenerative disorders including Parkinson's disease, multisystem atrophy, and dementia with Lewy body...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29143313/polyglucosan-myopathy-and-functional-characterization-of-a-novel-gyg1-mutation
#7
C Hedberg-Oldfors, A Mensch, K Visuttijai, G Stoltenburg, D Stoevesandt, T Kraya, A Oldfors, S Zierz
OBJECTIVES: Disorders of glycogen metabolism include rare hereditary muscle glycogen storage diseases with polyglucosan, which are characterized by storage of abnormally structured glycogen in muscle in addition to exercise intolerance or muscle weakness. In this study, we investigated the etiology and pathogenesis of a late-onset myopathy associated with glycogenin-1 deficiency. MATERIALS AND METHODS: A family with two affected siblings, 64- and 66-year-olds, was studied...
November 15, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29142792/spinal-muscular-atrophy-the-treatment-approved
#8
Rabih Tabet, Sandy El Bitar, Julie Zaidan, Garbis Dabaghian
Spinal muscular atrophy (SMA) is a rare genetic neuromuscular disorder resulting in progressive muscle weakness and atrophy. It is universally fatal, especially if the respiratory muscles are involved leading to repetitive aspiration and respiratory failure. Historically, the treatment for this disease was only supportive. Herein we describe an adult patient who presented with worsening weakness and fatigue and was subsequently diagnosed with spinal muscular atrophy. Increased awareness of this condition and a new treatment modality is required...
September 2, 2017: Curēus
https://www.readbyqxmd.com/read/29140787/tgf-%C3%AE-requires-the-activation-of-canonical-and-non-canonical-signalling-pathways-to-induce-skeletal-muscle-atrophy
#9
Johanna Ábrigo, Fabian Campos, Felipe Simon, Claudia Riedel, Daniel Cabrera, Cristian Vilos, Claudio Cabello-Verrugio
The transforming growth factor type beta (TGF-β) induces skeletal muscle atrophy characterized by a decrease in fiber's diameter and levels of myosin heavy chain (MHC), also as an increase of MuRF-1 expression. In addition, TGF-β induces muscle atrophy by a mechanism dependent on reactive oxygen species (ROS). TGF-β signals by activating both canonical Smad-dependent, and non-canonical signalling pathways such as ERK1/2, JNK1/2, and p38 MAPKs. However, the participation of canonical and non-canonical signalling pathways in the TGF-β atrophic effect on skeletal muscle is unknown...
August 28, 2017: Biological Chemistry
https://www.readbyqxmd.com/read/29138805/extracellular-polysaccharides-purified-from-aureobasidium-pullulans-sm%C3%A2-2001-polycan-inhibit-dexamethasone%C3%A2-induced-muscle-atrophy-in-mice
#10
Jong-Min Lim, Young Joon Lee, Hyung-Rae Cho, Dong-Chan Park, Go-Woon Jung, Sae Kwang Ku, Jae-Suk Choi
The present study assessed the beneficial skeletal muscle‑preserving effects of extracellular polysaccharides from Aureobasidium pullulans SM‑2001 (Polycan) (EAP) on dexamethasone (DEXA)‑induced catabolic muscle atrophy in mice. To investigate whether EAP prevented catabolic DEXA‑induced muscle atrophy, and to examine its mechanisms of action, EAP (100, 200 and 400 mg/kg) was administered orally, once a day for 24 days. EAP treatment was initiated 2 weeks prior to DEXA treatment (1 mg/kg, once a day for 10 days) in mice...
November 10, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29138386/reverse-less-invasive-stabilization-system-liss-plating-for-proximal-femur-fractures-in-poliomyelitis-survivors-a-report-of-two-cases
#11
Chen Yao, Dongxu Jin, Changqing Zhang
BACKGROUND Poliomyelitis is a neuromuscular disease which causes muscle atrophy, skeletal deformities, and disabilities. Treatment of hip fractures on polio-affect limbs is unique and difficult, since routine fixation methods like nailing may not be suitable due to abnormal skeletal structures. CASE REPORT We report one femoral neck fracture and one subtrochanteric fracture in polio survivors successfully treated with reverse less invasive stabilization system (LISS) plating technique. Both fractures were on polio-affected limbs with significant skeletal deformities and low bone density...
November 15, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/29137918/spinobulbar-muscular-atrophy-combined-with-atypical-hereditary-neuropathy-with-liability-to-pressure-palsy
#12
Kyomin Choi, So Hyun Ahn, Seol-Hee Baek, Jun-Soon Kim, Seok-Jin Choi, Je-Young Shin, Sung-Min Kim, Yoon-Ho Hong, Jung-Joon Sung
Spinobulbar muscular atrophy (SBMA) is an X-linked recessive disease, presenting motor weakness and wasting of facial, bulbar and limb muscles. Hereditary neuropathy with liability to pressure palsy (HNPP) is autosomal dominant disorder characterized by recurrent neuropathies at common entrapment sites. We report a case of co-existence of SBMA and atypical HNPP with genetic confirmation of CAG expansion in the androgen receptor (AR) gene and deletion of the peripheral myelin protein 22 (PMP22) gene. A 62-year-old man presented with progressive muscle weakness, fasciculations in upper and lower limbs and dysesthesia predominantly in the distal regions...
November 11, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29137564/muscle-atrophy-and-recovery-of-individual-thigh-muscles-as-measured-by-magnetic-resonance-imaging-scan-during-treatment-with-cast-for-ankle-or-foot-fracture
#13
Koun Yamauchi, Akito Yoshiko, Shigetoshi Suzuki, Chisato Kato, Hiroshi Akima, Takayuki Kato, Koji Ishida
PURPOSE: We aimed to longitudinally investigate individual thigh muscle changes using magnetic resonance imaging (MRI) during treatment with cast of ankle or foot fracture. Moreover, we aimed to demonstrate whether measurements of muscle cross-sectional area (CSA) are sensitive to muscle changes, contributing to simpler methods in clinical application . METHODS: Ten patients undergoing treatment with cast of acute ankle or foot fractures were studied. Axial MRI (1...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29136715/-analysis-of-the-clinical-and-electrophysiological-characteristics-of-multifocal-motor-neuropathy
#14
H F Wang, F Yang, F Cui, Z H Chen, L Ling, X S Huang
Ten patients diagnosed with multifocal motor neuropathy (MMN) were recruited in the Department of Neurology at Chinese PLA General Hospital from January 1, 2009 to August 31, 2015. The clinical and electrophysiological features were analyzed retrospectively. All patients complained of progressive asymmetric limb weakness, which was more severe in distal than in proximal. Five presented muscle atrophy. None had sensory disturbances. All suffered diminished or disappeared tendon reflex, whereas Babinski signs were negative...
November 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29132389/advances-challenges-and-future-directions-for-stem-cell-therapy-in-amyotrophic-lateral-sclerosis
#15
REVIEW
Yuri Ciervo, Ke Ning, Xu Jun, Pamela J Shaw, Richard J Mead
Amyotrophic lateral sclerosis (ALS) is a rapidly progressive neurodegenerative condition where loss of motor neurons within the brain and spinal cord leads to muscle atrophy, weakness, paralysis and ultimately death within 3-5 years from onset of symptoms. The specific molecular mechanisms underlying the disease pathology are not fully understood and neuroprotective treatment options are minimally effective. In recent years, stem cell transplantation as a new therapy for ALS patients has been extensively investigated, becoming an intense and debated field of study...
November 13, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/29132243/protective-effects-of-estradiol-and-dihydrotestosterone-following-spinal-cord-injury
#16
Dale R Sengelaub, Qi Han, Nai-Kui Liu, Melissa Maczuga, Violetta Szalavari, Stephanie Valencia, Xiao-Ming Xu
Spinal cord injury (SCI) results in lesions that destroy tissue and disrupt spinal tracts, producing deficits in locomotor and autonomic function. We previously demonstrated that motoneurons, and the muscles they innervate, show pronounced atrophy after SCI, and these changes are prevented by treatment with testosterone. Here we assessed if the testosterone active metabolites, estradiol and dihydrotestosterone, have similar protective effects after SCI. Young adult female rats received either sham or T9 spinal cord contusion injuries and were treated with estradiol, dihydrotestosterone, both, or nothing via Silastic capsules...
November 13, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29131861/delivery-of-epirubicin-via-slow-infusion-as-a-strategy-to-mitigate-chemotherapy-induced-cardiotoxicity
#17
Fang Yang, Qiao Lei, Lu Li, Jian Chang He, Jiajia Zeng, Chunxiang Luo, Sai-Ching Jim Yeung, Runxiang Yang
BACKGROUND: Continuous infusion of doxorubicin has been a strategy to reduce cardiotoxicity. Epirubicin is another anthracycline in common clinical use. However, evidence is lacking regarding whether this strategy can reduce cardiotoxicity of epirubicin without compromising antineoplastic efficacy. DESIGN AND METHODS: Healthy rats were randomized into groups: epirubicin (8 mg/kg) delivered intraperitoneally via micro osmotic pumps (MOP), epirubicin (8 mg/kg) by intraperitoneal (IP) bolus injection, and placebo control...
2017: PloS One
https://www.readbyqxmd.com/read/29129636/inflammation-mediated-muscle-metabolic-dysregulation-local-and-remote-to-the-site-of-major-abdominal-surgery
#18
Krishna K Varadhan, Dumitru Constantin-Teodosiu, Despina Constantin, Paul L Greenhaff, Dileep N Lobo
BACKGROUND & AIMS: Postoperative hyperglycaemia is common in patients having major surgery and is associated with adverse outcomes. This study aimed to determine whether bacteraemia contributed to postoperative systemic inflammation, and whether increases in the expression of muscle mRNAs and proteins reflecting increased muscle inflammation, atrophy and impaired carbohydrate oxidation were evident at the time of surgery, and both local and distant to the site of trauma, and could be associated with impaired glucoregulation...
November 2, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29127187/apobec2-deficiency-causes-mitochondrial-defects-and-mitophagy-in-skeletal-muscle
#19
Yusuke Sato, Hideaki Ohtsubo, Naohiro Nihei, Takane Kaneko, Yoriko Sato, Shin-Ichi Adachi, Shinji Kondo, Mako Nakamura, Wataru Mizunoya, Hiroshi Iida, Ryuichi Tatsumi, Cristina Rada, Fumiaki Yoshizawa
Apobec2 is a member of the activation-induced deaminase/apolipoprotein B mRNA editing enzyme catalytic polypeptide cytidine deaminase family expressed in differentiated skeletal and cardiac muscle. We previously reported that Apobec2 deficiency in mice leads to a shift in muscle fiber type, myopathy, and diminished muscle mass. However, the mechanisms of myopathy caused by Apobec2 deficiency and its physiologic functions are unclear. Here we show that, although Apobec2 localizes to the sarcomeric Z-lines in mouse tissue and cultured myotubes, the sarcomeric structure is not affected in Apobec2-deficient muscle...
November 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29126611/diaphragmatic-thickness-ratio-inspiratory-expiratory-as-a-diagnostic-method-of-diaphragmatic-palsy-associated-with-interescalene-block
#20
V M López Escárraga, K Dubos España, R H Castillo Bustos, L Peidró, S Sastre, X Sala-Blanch
INTRODUCTION: Diaphragmatic paralysis is a side-effect associated with interscalene block. Thickness index of the diaphragm muscle (inspiratory thickness/expiratory thickness) obtained by ultrasound has recently been introduced in clinical practice for diagnosis of diaphragm muscle atrophy. Our objective was to evaluate this index for the diagnosis of acute phrenic paresis associated with interscalene block. PATIENTS AND METHODS: We designed an observational study in 22 patients scheduled for shoulder arthroscopy...
November 7, 2017: Revista Española de Anestesiología y Reanimación
keyword
keyword
38472
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"