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Diabetic myopathy

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https://www.readbyqxmd.com/read/28835899/acute-elevated-glucose-promotes-abnormal-action-potential-induced-ca-2-transients-in-cultured-skeletal-muscle-fibers
#1
Erick O Hernández-Ochoa, Quinton Banks, Martin F Schneider
A common comorbidity of diabetes is skeletal muscle dysfunction, which leads to compromised physical function. Previous studies of diabetes in skeletal muscle have shown alterations in excitation-contraction coupling (ECC)-the sequential link between action potentials (AP), intracellular Ca(2+) release, and the contractile machinery. Yet, little is known about the impact of acute elevated glucose on the temporal properties of AP-induced Ca(2+) transients and ionic underlying mechanisms that lead to muscle dysfunction...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28815909/proximal-neuropathy-and-associated-skeletal-muscle-changes-resembling-denervation-atrophy-in-hind-limbs-of-chronic-hypoglycaemic-rats
#2
Vivi F H Jensen, Anne-Marie Molck, Henrik Soeborg, Jette Nowak, Melissa Chapman, Jens Lykkesfeldt, Ingrid B Bogh
Peripheral neuropathy is one of the most common complications of diabetic hyperglycaemia. Insulin-induced hypoglycaemia (IIH) might potentially exacerbate or contribute to neuropathy as hypoglycaemia also causes peripheral neuropathy. In rats, IIH induces neuropathy associated with skeletal muscle changes. Aims of the present study were to investigate the progression and sequence of histopathologic changes caused by chronic IIH in rat peripheral nerves and skeletal muscle, and whether such changes were reversible...
August 16, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28793934/statin-therapy-causes-gut-dysbiosis-in-mice-through-a-pxr-dependent-mechanism
#3
Jose A Caparrós-Martín, Ricky R Lareu, Joshua P Ramsay, Jörg Peplies, F Jerry Reen, Henrietta A Headlam, Natalie C Ward, Kevin D Croft, Philip Newsholme, Jeffery D Hughes, Fergal O'Gara
BACKGROUND: Statins are a class of therapeutics used to regulate serum cholesterol and reduce the risk of heart disease. Although statins are highly effective in removing cholesterol from the blood, their consumption has been linked to potential adverse effects in some individuals. The most common events associated with statin intolerance are myopathy and increased risk of developing type 2 diabetes mellitus. However, the pathological mechanism through which statins cause these adverse effects is not well understood...
August 9, 2017: Microbiome
https://www.readbyqxmd.com/read/28771754/reversion-to-embryonic-transcriptional-splicing-patterns-may-underlie-diabetic-myopathy
#4
EDITORIAL
David L Mack
No abstract text is available yet for this article.
August 3, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28754454/clinical-spectra-of-neuromuscular-manifestations-in-patients-with-lipodystrophy-a-multicenter-study
#5
Gulcin Akinci, Haluk Topaloglu, Tevfik Demir, Ayca Ersen Danyeli, Beril Talim, Fatma Ela Keskin, Pinar Kadioglu, Enez Talip, Canan Altay, Guzin Fidan Yaylali, Habib Bilen, Banu Nur, Leyla Demir, Huseyin Onay, Baris Akinci
Lipodystrophy is a heterogeneous group of disorders characterized by loss of adipose tissue. Here, we report on clinical spectra of neuromuscular manifestations of Turkish patients with lipodystrophy. Seventy-four patients with lipodystrophy and 20 healthy controls were included. Peripheral sensorimotor neuropathy was a common finding (67.4%) in lipodystrophic patients with diabetes. Neuropathic foot ulcers were observed in 4 patients. Drop foot developed in 1 patient with congenital generalized lipodystrophy type 1...
June 1, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28725008/methylglyoxal-and-advanced-glycation-end-products-insight-of-the-regulatory-machinery-affecting-the-myogenic-program-and-of-its-modulation-by-natural-compounds
#6
Mohammad Hassan Baig, Arif Tasleem Jan, Gulam Rabbani, Khurshid Ahmad, Jalaluddin M Ashraf, Taeyeon Kim, Han Sol Min, Yong Ho Lee, Won-Kyung Cho, Jin Yeul Ma, Eun Ju Lee, Inho Choi
Methylglyoxal (MG) is a reactive dicarbonyl intermediate and a precursor of advanced glycation end products (AGEs). The authors investigated the role played by AGEs in muscle myopathy and the amelioration of its effects by curcumin and gingerol. In addition to producing phenotypical changes, MG increased oxidative stress and reduced myotube formation in C2C12 cells. RAGE (receptor for AGEs) expression was up-regulated and MYOD and myogenin (MYOG) expressions were concomitantly down-regulated in MG-treated cells...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28670530/myopathy-in-patients-taking-atorvastatin-a-pilot-study
#7
K Manoj, N Jain, S V Madhu
AIM: This study aims to investigate the prevalence and risk factors of statin-induced myopathy. SUBJECTS AND METHODS: A total of 200 patients aged ≥ 40 years and taking atorvastatin 10 mg/day or more for at least 2 weeks were recruited in the study. A detailed history of participants and anthropometry of study participants was recorded, and features of myopathy were explained. Biochemical investigations along with thyroid stimulating hormone (TSH) and Vitamin D were done in all patients...
July 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28665810/diabetic-myopathy-current-molecular-understanding-of-this-novel-neuromuscular-disorder
#8
Cynthia M F Monaco, Christopher G R Perry, Thomas J Hawke
PURPOSE OF REVIEW: Here we summarize the evidence from human studies of the impairments to the structural, functional, and metabolic capacities in skeletal muscle in those with type 1 diabetes (T1D) - a condition known as diabetic myopathy. Given the importance of skeletal muscle for blood lipid and glucose management, the development and progression of diabetic myopathy would not only lead to increased insulin resistance, but also impact the ability to mitigate dysglycemic/dyslipidemic burdens...
October 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28660607/the-effects-of-alpha-lipoic-acid-on-diabetic-myopathy
#9
D Jurisic-Erzen, G Starcevic-Klasan, D Ivanac, S Peharec, D Girotto, R Jerkovic
PURPOSE: Increased oxidative stress and impaired antioxidant defense are important mechanisms in the pathogenesis of diabetic myopathy. Since diabetes mellitus type 1 decreases muscle regeneration capacity the present study was designed to determine the influence of alpha-lipoic acid (ALA), a potent biological antioxidant, on the process of regeneration of diabetic rat skeletal muscles. METHODS: 40 Wistar rats were divided into three groups: control (n = 8), untreated diabetic group (n = 16) and ALA treated diabetic group (n = 16)...
June 28, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28655651/cichoric-acid-improved-hyperglycaemia-and-restored-muscle-injury-via-activating-antioxidant-response-in-mld-stz-induced-diabetic-mice
#10
Di Zhu, Xinglin Zhang, Yajie Niu, Zhijun Diao, Bo Ren, Xingyu Li, Zhigang Liu, Xuebo Liu
Cichoric acid (CA), extracted from edible plants and vegetables, is a potential natural nutraceutical, with antioxidant and hypoglycaemic biological functions. The objective of this study was to explore the potential underlying molecular mechanisms involved in normalizing diabetes-related changes in hyperglycaemia via pancreas apoptosis and muscle injury induced by multiple low-dose STZ (MLD-STZ) injection in response to dietary supplementation with CA. To induce the MLD-STZ diabetic mice, the C57BL/6J mice were intraperitoneally injected with STZ (50 mg/kg body weight) for consecutive five days...
September 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28620495/familial-partial-lipodystrophy-and-proteinuric-renal-disease-due-to-a-missense-c-1045c%C3%A2-%C3%A2-t-lmna-mutation
#11
Athanasios Fountas, Zoe Giotaki, Evangelia Dounousi, George Liapis, Alexandra Bargiota, Agathocles Tsatsoulis, Stelios Tigas
Proteinuric renal disease is prevalent in congenital or acquired forms of generalized lipodystrophy. In contrast, an association between familial partial lipodystrophy (FPLD) and renal disease has been documented in very few cases. A 22-year-old female patient presented with impaired glucose tolerance, hyperinsulinemia, hirsutism and oligomenorrhea. On examination, there was partial loss of subcutaneous adipose tissue in the face, upper and lower limbs, bird-like facies with micrognathia and low set ears and mild acanthosis nigricans...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28603900/mitochondrial-point-mutation-m-3243a-g-associates-with-lower-bone-mineral-density-thinner-cortices-and-reduced-bone-strength-a-case-control-study
#12
Jakob Høgild Langdahl, Anja Lisbeth Frederiksen, Stinus Jørn Hansen, Per Heden Andersen, Knud Bonnet Yderstraede, Morten Dunø, John Vissing, Morten Frost
Mitochondrial dysfunction is associated with several clinical manifestations including diabetes mellitus (DM), neurological disorders, renal and hepatic diseases, and myopathy. Although mitochondrial dysfunction is associated with increased bone resorption and decreased bone formation in mouse models, effects of alterations in mitochondrial function on bone remodeling and mass have not been investigated in humans. We recruited 45 carriers (29 females, 16 males) with the m.3243A>G mutation and healthy controls matched for gender, age, height, and menopausal status...
June 11, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28576976/pleiotropic-and-adverse-effects-of-statins-do-epigenetics-play-a-role
#13
REVIEW
Stephanie C Allen, Cyril D S Mamotte
Statins are widely used to prevent major cardiovascular events by lowering serum cholesterol. There is evidence that statins have pleiotropic effects-that is, cholesterol-independent effects-that may also confer protection from cardiovascular disease and potentially numerous other pathologies, including cancer. Statins also have a number of well described adverse effects, including myopathy, rhabdomyolysis, liver damage, and type 2 diabetes. This paper examines the evidence of epigenetic modifications as a contributory factor to the pleiotropic and adverse effects of statins...
August 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28561900/muscle-changes-in-patients-with-diabetes-and-chronic-exertional-compartment-syndrome-before-and-after-treatment-with-fasciotomy
#14
David S Edmundsson, Göran L Toolanen, Per S Stål
INTRODUCTION: Muscle changes in patients with diabetes and lower leg pain due to chronic exertional compartment syndrome (CECS) were investigated before and after fasciotomy. METHODS: The tibialis anterior muscle was analyzed with histochemical and morphological techniques in 7 patients with diabetes and CECS before fasciotomy, and in 5 of them 1-year after fasciotomy. Non-diabetic patients with CECS and healthy subjects served as references. RESULTS: Before treatment, walking distance until occurrence of pain was limited (<0...
May 31, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28536139/effects-of-leucine-supplementation-and-resistance-training-on-myopathy-of-diabetic-rats
#15
Carlos Eduardo C Martins, Vanessa B de S Lima, Brad J Schoenfeld, Julio Tirapegui
Leucine supplementation and resistance training positively influence the protein translation process and the cell signaling mTOR (mammalian target of rapamycin) pathway that regulates muscle protein balance and muscle remodeling, and thus may be therapeutic to diabetic myopathy. However, the effect of a combined intervention has not been well studied. Forty male Wistar rats were divided into five groups, control (C), diabetic control (D), diabetic + trained (DT), diabetic + L-leucine (DL), diabetic + L-leucine + trained (DLT)...
May 2017: Physiological Reports
https://www.readbyqxmd.com/read/28515189/10-year-trends-in-statin-utilization-in-taiwan-a-retrospective-study-using-taiwan-s-national-health-insurance-research-database
#16
Hsing-Chun Hsieh, Jason C Hsu, Christine Y Lu
OBJECTIVE: Statins have been commonly used to treat patients with hypercholesterolaemia and to prevent cardiovascular disease (CVD) worldwide. This study examined trends in use of statins in Taiwan from 2002 to 2011. DESIGN: This is a retrospective observational study focusing on the utilisation of statins. SETTING: The monthly claims data for statins between 2002 and 2011 were retrieved from Taiwan's National Health Insurance Research Database...
May 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28499500/ca-2-release-channels-join-the-resolution-revolution
#17
REVIEW
Ran Zalk, Andrew R Marks
Ryanodine receptors (RyRs) are calcium release channels expressed in the sarcoendoplasmic reticula of many cell types including cardiac and skeletal muscle cells. In recent years Ca(2+) leak through RyRs has been implicated as a major contributor to the development of diseases including heart failure, muscle myopathies, Alzheimer's disease, and diabetes, making it an important therapeutic target. Recent mammalian RyR1 cryoelectron microscopy (cryo-EM) structures of multiple functional states have clarified longstanding questions including the architecture of the transmembrane (TM) pore and cytoplasmic domains, the location and architecture of the channel gate, ligand-binding sites, and the gating mechanism...
July 2017: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/28488343/master-and-commander-foxo-s-role-in-muscle-atrophy
#18
H T Langer
No abstract text is available yet for this article.
July 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28458318/familial-pernicious-chronic-intestinal-pseudo-obstruction-with-a-mitochondrial-dna-a3243g-mutation
#19
Junichiro Suzuki, Mai Iwata, Hideyuki Moriyoshi, Suguru Nishida, Takeshi Yasuda, Yasuhiro Ito
We report the case of a mother and two children who shared a mitochondrial DNA A3243G mutation. The mother had diabetes mellitus, neurogenic bladder, bradykinesia, dystonia, and slowly progressive cerebellar ataxia. Her two daughters were diagnosed with mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes at adolescence. They all presented with gastrointestinal symptoms at an advanced clinical stage. They were diagnosed with chronic intestinal pseudo-obstruction, and they were resistant to therapy...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28436720/efficacy-and-safety-of-statins-and-exercise-combination-therapy-compared-to-statin-monotherapy-in-patients-with-dyslipidaemia-a-systematic-review-and-meta-analysis
#20
Ya-Jun Gui, Cai-Xiu Liao, Qiong Liu, Yuan Guo, Tao Yang, Jing-Yuan Chen, Ya-Ting Wang, Jia-Hui Hu, Dan-Yan Xu
Background Statin treatment in association with physical exercise can substantially reduce mortality in dyslipidaemic individuals. However, the available data to compare the efficacy and safety of statins and exercise combination therapy with statin monotherapy are limited. Design Systematic review and meta-analysis. Methods We systematically searched PubMed, Embase and the Cochrane Library from database inception until December 2016. We included randomised and non-randomised studies that compared the efficacy and safety of statins and exercise combination therapy with statin monotherapy in patients with dyslipidaemia...
June 2017: European Journal of Preventive Cardiology
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