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https://www.readbyqxmd.com/read/28102935/ectopic-cushing-syndrome-in-small-cell-lung-cancer-a-case-report-and-literature-review
#1
Hang-Yu Zhang, Jun Zhao
Small cell lung cancer (SCLC) is a neuroendocrine tumor with the potential to secrete various peptides or hormones that can lead to paraneoplastic syndromes, such as Ectopic Cushing syndrome (ECS). Because of the aggressive nature of the syndrome and its atypical features, ECS in small-cell lung cancer is difficult to diagnose and has a poor prognosis. We report a case of a 74-year-old male patient who presented with severe hypokalemia, proximal muscle weakness, peripheral edema, metabolic alkalosis, and worsening hyperglycemia...
November 8, 2016: Thoracic Cancer
https://www.readbyqxmd.com/read/28101144/histopathological-findings-in-systemic-sclerosis-related-myopathy-fibrosis-and-microangiopathy-with-lack-of-cellular-inflammation
#2
Claudio Corallo, Maurizio Cutolo, Nila Volpi, Daniela Franci, Margherita Aglianò, Antonio Montella, Chiara Chirico, Stefano Gonnelli, Ranuccio Nuti, Nicola Giordano
OBJECTIVES: The objective of this study was to identify specific histopathological features of skeletal muscle involvement in systemic sclerosis (SSc) patients. METHODS: A total of 35 out of 112 SSc-patients (32%, including 81% female and 68% diffuse scleroderma) presenting clinical, biological and electromyographic (EMG) features of muscle weakness, were included. Patients underwent vastus lateralis biopsy, assessed for individual pathologic features including fibrosis [type I collagen (Coll-I), transforming growth factor β (TGF-β)], microangiopathy [cluster of differentiation 31 (CD31), pro-angiogenic vascular endothelial growth factor A (VEGF-A), anti-angiogenic VEGF-A165b], immune/ inflammatory response [CD4, CD8, CD20, human leucocyte antigens ABC (HLA-ABC)], and membranolytic attack complex (MAC)...
January 2017: Therapeutic Advances in Musculoskeletal Disease
https://www.readbyqxmd.com/read/28099331/atorvastatin-induced-necrotizing-autoimmune-myositis-an-emerging-dominant-entity-in-patients-with-autoimmune-myositis-presenting-with-a-pure-polymyositis-phenotype
#3
Yves Troyanov, Océane Landon-Cardinal, Marvin J Fritzler, José Ferreira, Ira N Targoff, Eric Rich, Michelle Goulet, Jean-Richard Goulet, Josiane Bourré-Tessier, Yves Robitaille, Julie Drouin, Alexandra Albert, Jean-Luc Senécal
The general aim of this study was to evaluate the disease spectrum in patients presenting with a pure polymyositis (pPM) phenotype. Specific objectives were to characterize clinical features, autoantibodies (aAbs), and membrane attack complex (MAC) in muscle biopsies of patients with treatment-responsive, statin-exposed necrotizing autoimmune myositis (NAM). Patients from the Centre hospitalier de l'Université de Montréal autoimmune myositis (AIM) Cohort with a pPM phenotype, response to immunosuppression, and follow-up ≥3 years were included...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28099237/lower-limb-muscular-strength-balance-and-mobility-levels-in-adults-following-severe-thermal-burn-injuries
#4
Mohammed T A Omar, Amal M Abd El Baky, Anwar A Ebid
Severe burn injuries are associated with hypermetabolic response and increased catabolism. These lead to a vast loss of muscle mass and reduced muscle strength and function. Therefore, the aim of this study is to determine the impact of severe burn injuries on lower-limb muscular strength, balance, and mobility level in adults. Forty burned adults with burned TBSA (burned TBSA) ≥40% participated in this study. The peak torque and total work of quadriceps and knee flexors were calculated at 150°/sec using Biodex isokinetic dynamometer...
January 10, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28098058/repair-of-an-inguinoscrotal-hernia-in-a-patient-with-becker-muscular-dystrophy
#5
F Tatulli, A Caraglia, A Delcuratolo, S Cassano, G S Chetta
INTRODUCTION: Inguinal hernia repairs are routinely performed as outpatient procedures in most patients, whereas a few require admission due to clinical or social peculiarities. Muscular dystrophies are inherited disorders characterized by progressive muscle wasting and weakness. In case of surgery there is no definite recommendation for either general or regional anesthesia. CASE REPORT: This contribution regards a 48 y. o. male patient diagnosed with Becker Muscular Dystrophy by muscle biopsy 10 years earlier...
September 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28097776/molecular-mechanisms-underlying-deoxy-adp-pi-activation-of-pre-powerstroke-myosin
#6
Sarah G Nowakowski, Michael Regnier, Valerie Daggett
Myosin activation is a viable approach to treat systolic heart failure. We previously demonstrated that striated muscle myosin is a promiscuous ATPase that can use most nucleoside triphosphates as energy substrates for contraction. When 2-deoxy ATP (dATP) is used, it acts as a myosin activator, enhancing cross-bridge binding and cycling. In vivo, we have demonstrated that elevated dATP levels increase basal cardiac function and rescues function of infarcted rodent and pig hearts. Here we investigate the molecular mechanism underlying this physiological effect...
January 18, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28096458/more-severe-disease-and-slower-recovery-in-younger-patients-with-anti-3-hydroxy-3-methylglutaryl-coenzyme-a-reductase-associated-autoimmune-myopathy
#7
Eleni Tiniakou, Iago Pinal-Fernandez, Thomas E Lloyd, Jemima Albayda, Julie Paik, Jessie L Werner, Cassie A Parks, Livia Casciola-Rosen, Lisa Christopher-Stine, Andrew L Mammen
OBJECTIVE: To study disease severity and response to therapy in a large cohort of patients with anti-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR)-associated myositis. METHODS: Muscle strength, creatine kinase levels and treatments were assessed in anti-HMGCR-positive patients at each clinical visit. Univariate and multivariate analyses were used to analyse the influence of clinical characteristics on strength and the change in strength over time. Whole exome sequencing was performed in a subset of patients...
January 17, 2017: Rheumatology
https://www.readbyqxmd.com/read/28096424/%C3%AE-actinin-titin-interaction-a-dynamic-and-mechanically-stable-cluster-of-bonds-in-the-muscle-z-disk
#8
Marco Grison, Ulrich Merkel, Julius Kostan, Kristina Djinović-Carugo, Matthias Rief
Stable anchoring of titin within the muscle Z-disk is essential for preserving muscle integrity during passive stretching. One of the main candidates for anchoring titin in the Z-disk is the actin cross-linker α-actinin. The calmodulin-like domain of α-actinin binds to the Z-repeats of titin. However, the mechanical and kinetic properties of this important interaction are still unknown. Here, we use a dual-beam optical tweezers assay to study the mechanics of this interaction at the single-molecule level...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096265/prion-properties-of-sod1-in-amyotrophic-lateral-sclerosis-and-potential-therapy
#9
Caroline Sibilla, Anne Bertolotti
Amyotrophic lateral sclerosis (ALS) is a devastating and rapidly progressive neurodegenerative disease caused by the deterioration of motor neurons. The first symptoms of ALS always begin at a focal but variable site and consistently spread to neighboring regions, suggesting that neurodegeneration in ALS is an orderly and propagating process. Like other neurodegenerative diseases, misfolding of a specific protein is central to ALS. SOD1, the major constituent of the protein deposits in some familial and sporadic forms of ALS, propagates its misfolded conformation like prions, providing a plausible molecular basis for the focality and spreading of muscle weakness in ALS...
January 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28093112/clinical-indicators-of-blood-gas-disturbances-elevated-l-lactate-concentration-and-other-abnormal-blood-parameters-in-newborn-beef-calves
#10
E R Homerosky, N A Caulkett, E Timsit, E A Pajor, J P Kastelic, M C Windeyer
Blood gas disturbances, commonly resulting from dystocia, are associated with failed transfer of passive immunity, morbidity and mortality in newborn calves. Modified APGAR scores intended to identify compromised calves are not widely adopted due to lack of practicality and inconsistent associations with blood parameters. The objective of this study was to determine clinical indicators of acidemia in newborn beef calves. Blood parameters at 10 min and 24 h after birth were compared to at-birth clinical examination parameters and calving characteristics in 77 commercial beef calves...
January 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28091824/exercise-capacity-physical-activity-and-morbidity
#11
Danielle L Brunjes, Peter J Kennel, P Christian Schulze
Muscle weakness and atrophy are key characteristics of the aging adult but can also be found in chronically ill patients with heart failure, cancer, renal failure, and chronic infectious diseases all associated with an accelerated level of muscle dysfunction. Reduced physical activity levels and exercise intolerance increase muscle loss and decrease quality of life in both the aging and heart failure populations. The purpose of this review is to provide an overview of the effects of aging and heart failure on skeletal muscle function and how exercise training can improve long-term outcomes associated with skeletal muscle dysfunction...
January 16, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28089977/antimelanoma-differentiation-associated-gene-5-antibody-expanding-the-clinical-spectrum-in-north-american-patients-with-dermatomyositis
#12
Siamak Moghadam-Kia, Chester V Oddis, Shinji Sato, Masataka Kuwana, Rohit Aggarwal
OBJECTIVE: To determine the clinical features associated with the antimelanoma differentiation-associated gene 5 antibody (anti-MDA5) in US patients with clinically amyopathic dermatomyositis (CADM) and classic DM. METHODS: Patients with CADM were consecutively selected from the University of Pittsburgh Myositis Database from 1985 to 2013. CADM was defined by a typical DM rash without objective muscle weakness and no or minimal abnormalities of muscle enzymes, electromyography, or muscle biopsy...
January 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28087067/-successful-use-of-sugammadex-for-caesarean-section-in-a-patient-with-myasthenia-gravis
#13
Lokman Soyoral, Ugur Goktas, Muhammed Bilal Cegin, Volkan Baydi
Myasthenia gravis is an autoimmune disorder that is characterized by muscle weakness that fluctuates, worsening with exertion, and improving with rest. Diagnosis of myasthenia gravis is made following clinical and physical examination and is confirmed by serum immunoassays to measure autoantibody levels. Myasthenia gravis especially when associated with pregnancy is a high-risk disease, and its course is unpredictable. We described the second report about use of sugammadex after rocuronium for a caesarean delivery with myasthenia gravis, but, unlike our case that formerly was diagnosed with myasthenia gravis, the patient was extubated on postoperative successfully and we did not encounter any respiratory problems...
January 10, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28079855/acute-sarcoid-myopathy-a-case-report-and-literature-review
#14
José Miguel Gómez-Verdú, Salvador Valero Cifuentes, Francisco Pastor Quirante, Francisco Román López-Andreu
Sarcoidosis is a worldwide spread disease with brad clinical spectrum, in which the pulmonary involvement is the main manifestation (more than 90% of cases); nevertheless, extrathoracic symptoms can predominate in the clinical picture and they may even be the first manifestation. One of them is the skeletal muscle involvement that normally is chronic and silent, with poor response to treatment with glucocorticoids. However, in some cases, it has an acute presentation. We present a case of a 61-year-old man with diagnosis of sarcoidosis whe were evaluated for proximal lower limb weakness within few days of evolution...
December 23, 2016: Sarcoidosis, Vasculitis, and Diffuse Lung Diseases: Official Journal of WASOG
https://www.readbyqxmd.com/read/28079708/parenteral-nutrition-in-the-critically-ill
#15
Jan Gunst, Greet Van den Berghe
PURPOSE OF REVIEW: Feeding guidelines have recommended early, full nutritional support in critically ill patients to prevent hypercatabolism and muscle weakness. Early enteral nutrition was suggested to be superior to early parenteral nutrition. When enteral nutrition fails to meet nutritional target, it was recommended to administer supplemental parenteral nutrition, albeit with a varying starting point. Sufficient amounts of amino acids were recommended, with addition of glutamine in subgroups...
January 11, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28079615/neuromuscular-weakness-in-chronic-obstructive-pulmonary-disease-chest-wall-diaphragm-and-peripheral-muscle-contributions
#16
Adam Alter, Loutfi S Aboussouan, Eduardo Mireles-Cabodevila
PURPOSE OF REVIEW: Chronic obstructive lung disease affects the lung parenchyma and airways leading to well described effects in respiratory function. This review describes the current knowledge and advances regarding neuromuscular function and chest wall mechanics, which are affected in chronic obstructive pulmonary disease (COPD). RECENT FINDINGS: In COPD, progressive lung hyperinflation becomes constrained by a chest wall with decreasing capacity to expand, resulting in respiratory muscle inefficiency...
January 11, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28079176/adductor-canal-block-versus-femoral-nerve-block-for-total-knee-arthroplasty-a-meta-analysis-of-randomized-controlled-trials
#17
Duan Wang, Yang Yang, Qi Li, Shen-Li Tang, Wei-Nan Zeng, Jin Xu, Tian-Hang Xie, Fu-Xing Pei, Liu Yang, Ling-Li Li, Zong-Ke Zhou
Femoral nerve blocks (FNB) can provide effective pain relief but result in quadriceps weakness with increased risk of falls following total knee arthroplasty (TKA). Adductor canal block (ACB) is a relatively new alternative providing pure sensory blockade with minimal effect on quadriceps strength. The meta-analysis was designed to evaluate whether ACB exhibited better outcomes with respect to quadriceps strength, pain control, ambulation ability, and complications. PubMed, Embase, Web of Science, Wan Fang, China National Knowledge Internet (CNKI) and the Cochrane Database were searched for RCTs comparing ACB with FNB after TKAs...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28078312/biallelic-scn10a-mutations-in-neuromuscular-disease-and-epileptic-encephalopathy
#18
Marios Kambouris, Julien Thevenon, Ariane Soldatos, Allison Cox, Joshi Stephen, Tawfeg Ben-Omran, Yasser Al-Sarraj, Hala Boulos, William Bone, James C Mullikin, Alice Masurel-Paulet, Judith St-Onge, Yannis Dufford, Corrine Chantegret, Christel Thauvin-Robinet, Jamil Al-Alami, Laurence Faivre, Jean Baptiste Riviere, William A Gahl, Alexander G Bassuk, May Christine V Malicdan, Hatem El-Shanti
OBJECTIVES: Two consanguineous families, one of Sudanese ethnicity presenting progressive neuromuscular disease, severe cognitive impairment, muscle weakness, upper motor neuron lesion, anhydrosis, facial dysmorphism, and recurrent seizures and the other of Egyptian ethnicity presenting with neonatal hypotonia, bradycardia, and recurrent seizures, were evaluated for the causative gene mutation. METHODS AND RESULTS: Homozygosity mapping and whole exome sequencing (WES) identified damaging homozygous variants in SCN10A, namely c...
January 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28078065/clinical-features-of-neuromuscular-disorders-in-patients-with-n-type-voltage-gated-calcium-channel-antibodies
#19
Andreas Totzeck, Petra Mummel, Oliver Kastrup, Tim Hagenacker
Neuromuscular junction disorders affect the pre- or postsynaptic nerve to muscle transmission due to autoimmune antibodies. Members of the group like myasthenia gravis and Lambert-Eaton syndrome have pathophysiologically distinct characteristics. However, in practice, distinction may be difficult. We present a series of three patients with a myasthenic syndrome, dropped-head syndrome, bulbar and respiratory muscle weakness and positive testing for anti-N-type voltage-gated calcium channel antibodies. In two cases anti-acetylcholin receptor antibodies were elevated, anti-P/Q-type voltage-gated calcium channel antibodies were negative...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28077823/association-of-health-symptoms-with-low-level-exposure-to-organophosphates-dna-damage-ache-activity-and-occupational-knowledge-and-practice-among-rice-corn-and-double-crop-farmers
#20
Surat Hongsibsong, Nalin Sittitoon, Ratana Sapbamrer
OBJECTIVES: This study aims to determine (1) total dialkylphosphate (ΣDAP) levels, occupational knowledge and practice, DNA damage, AChE activity, and health symptoms in rice, corn, and double-crop farmers; (2) the association of health symptoms with ΣDAP levels, occupational knowledge and practice, DNA damage, and AChE activity in farmers; and (3) the prevalence of health symptoms between farmers and non-farmers. METHODS: A cross-sectional study was conducted by interviewing as well as analyzing urine and blood samples during July to August 2014...
January 11, 2017: Journal of Occupational Health
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