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Diabetic Cardiomyopathy

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https://www.readbyqxmd.com/read/28202395/sulfiredoxin-involved-in-the-protection-of-peroxiredoxins-against-hyperoxidation-in-the-early-hyperglycaemia
#1
Sa Shi, Yunqiu Guo, Yanping Lou, Quanfeng Li, Xiaona Cai, Xin Zhong, Hong Li
As a direct consequence of hyperglycaemia, the excessive generation of ROS is central to the pathogenesis of diabetic cardiomyopathy. We hypothesize that stimulation of high glucose (HG) results in an increased sulfiredoxin (Srx) expression, which regulates ROS signaling through reducing the hyperoxidized peroxiredoxins (Prxs). We show that hyperoxidized Prxs were initially reduced in the preliminary stage but then dramatically increased in advanced stage and these changes corresponded to a significant increase of Srx expression in the heart of diabetic rats...
February 12, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28199183/mrna-mirna-integrative-analysis-of-diabetes-induced-cardiomyopathy-in-rats
#2
Mariana B Lopes, Renata Cc Freitas, Mario H Hirata, Rosario Dc Hirata, Adriana A Rezende, Vivian N Silbiger, Raul H Bortolin, Andre D Luchessi
An integrative analysis of miRNA and mRNA expression profiles in left ventricle (LV) of diabetes-induced rats was performed to elucidate the role of miRNAs and their mRNAs target in diabetic cardiomyopathy (DCM). mRNA (GSE4745) and miRNA (GSE44179) datasets were downloaded from Gene Expression Omnibus 2R (GEO2R) and differentially expressed mRNAs and miRNAs were selected. Cardiotoxicity-related mRNAs (n=7) were analyzed by Ingenuity Pathway Analyses 6 (IPA) and regulatory miRNAs (n=639) were identified using TargetScan 7...
March 1, 2017: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28197645/subclinical-decrease-in-myocardial-function-in-asymptomatic-infants-of-diabetic-mothers-a-tissue-doppler-study
#3
Jenny E Zablah, Dorota Gruber, Guillaume Stoffels, Estefania G Cabezas, Denise A Hayes
Infants of diabetic mothers (IDMs) with hypertrophic cardiomyopathy are recognized to have impaired myocardial performance, but less is known about ventricular function in IDMs without hypertrophy. We hypothesized that in asymptomatic newborns with normal two-dimensional echocardiographic evaluations, pulsed wave tissue Doppler imaging (TDI) would suggest a subclinical decrease in the cardiac function of IDMs compared to infants of non-diabetics (nIDMs). This is a retrospective cohort study of asymptomatic neonates ≥36 weeks gestation, at 0-7 days of life, with normal standard echocardiograms...
February 14, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28194727/review-of-cardiovascular-imaging-in-the-journal-of-nuclear-cardiology-in-2016-part-1-of-2-positron-emission-tomography-computed-tomography-and-magnetic-resonance
#4
Wael AlJaroudi, Fadi G Hage
Several original articles and editorials have been published in the Journal of Nuclear Cardiology last year. It has become a tradition at the beginning of each year to summarize some of these key articles (AlJaroudi and Hage in J Nucl Cardiol 22:507-512, 2015, 23:122-130, 2016; Hage and AlJaroudi in J Nucl Cardiol 22:714-719, 2015; 23:493-498, 2016). In this part one, we will discuss some of the progress made in patients with infiltrative disease, cardiomyopathies (non-ischemic, ischemic, and diabetic), hybrid and molecular imaging, using advancement in positron emission tomography, computed tomography, and magnetic resonance imaging...
February 13, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28191526/decreased-regional-left-ventricular-myocardial-strain-in-type-1-diabetic-children-a-first-sign-of-diabetic-cardiomyopathy
#5
Amir Hodzic, Virginie Ribault, Pascale Maragnes, Paul Milliez, Eric Saloux, Fabien Labombarda
BACKGROUND AND OBJECTIVES: Type 1 diabetes is a major cardiovascular risk factor associated with an excess of mortality in young adults due to premature cardiovascular events, which includes heart failure. The relation between type 1 diabetes and cardiac structure and function in children was poorly documented. Our study investigates (1) whether type 1 diabetic children have echocardiographic signs of subclinical cardiac dysfunction assessed by tissue Doppler strain and (2) whether state of metabolic control and diabetes duration have any influence on the cardiac event...
June 1, 2016: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28183874/novel-insights-into-dna-methylation-and-its-critical-implications-in-diabetic-vascular-complications
#6
Jia Zheng, Jing Cheng, Qian Zhang, Xinhua Xiao
Recent epidemiological and clinical studies have shown that type 2 diabetic patients can develop diabetic vascular complications even after intensive glycemic control. It has been suggested that this phenomenon could be explained by the hypothesis of "metabolic memory". The underlying mechanisms between these enduring effects and the prior hyperglycemic state are still not well understood. Preliminary studies demonstrate that hyperglycemia can regulate gene expression by epigenetic modifications, such as DNA methylation, which can persistently exist even after glucose normalization...
February 9, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28177068/metabolic-remodeling-in-diabetic-cardiomyopathy
#7
Cher-Rin Chong, Kieran Clarke, Eylem Levelt
No abstract text is available yet for this article.
February 8, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28176247/apigenin-alleviates-stz-induced-diabetic-cardiomyopathy
#8
Huang-Jun Liu, Yun-Lin Fan, Hai-Han Liao, Yuan Liu, Si Chen, Zhen-Guo Ma, Ning Zhang, Zheng Yang, Wei Deng, Qi-Zhu Tang
Apigenin is an important component of fruits and vegetables in human daily diets. Several cellular and animal models have been performed to demonstrate its anti-oxidant and anti-inflammatory bioactivities. However, the cardioprotective effects of apigenin in diabetic cardiomyopathy (DCM) remain unclear. In this study, we intended to explore the roles of apigenin in cardiac remodeling of DCM. Male C57BL/6 J mice were treated with streptozotocin (STZ, 50 mg/kg) for 5 consecutive days to induce DCM. The echocardiography and catheter-based measurements of hemodynamic parameters were performed to evaluate the cardiac function...
February 7, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28154277/mitochondrial-cardiomyopathy-with-a-unique-99m-tc-mibi-123-i-bmipp-mismatch-pattern
#9
Ryosuke Tashiro, Noriko Onoue, Hiroya Rikimaru, Kenichi Tsukita, Hiroshi Fujita, Nobuhiro Yamaguchi, Takeshi Ishizuka, Yasushi Suzuki, Hiroyoshi Suzuki, Tsuyoshi Shinozaki
A 42-year-old man was referred to our hospital due to chest pain, diabetes mellitus, and sensorineural hearing loss. Transthoracic echocardiography revealed diffuse left ventricular hypokinesis. He was diagnosed with mitochondrial disease and a c.A3243G mutation was identified in his mitochondrial DNA. This case of mitochondrial cardiomyopathy demonstrated a low uptake of (123)I-BMIPP, while the uptake of (99m)Tc-MIBI was preserved. In contrast, previous reports have noted the increased uptake of(123)I-BMIPP and the decreased uptake of (99m)Tc-MIBI...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28154187/decreased-mitochondrial-pyruvate-transport-activity-in-the-diabetic-heart-role-of-mpc2-acetylation
#10
Shraddha S Vadvalkar, Satoshi Matsuzaki, Craig A Eyster, Jennifer R Giorgione, Lee B Bockus, Caroline S Kinter, Michael Kinter, Kenneth M Humphries
Alterations in mitochondrial function contribute to diabetic cardiomyopathy. We have previously shown that heart mitochondrial proteins are hyper-acetylated in OVE26 mice, a transgenic model of type 1 diabetes. However, the universality of this modification and its functional consequences are not well established. In this study, we demonstrate that Akita type 1 diabetic mice exhibit hyper-acetylation. Functionally, isolated Akita heart mitochondria have significantly impaired maximal (state 3) respiration with physiological pyruvate (0...
February 1, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28146260/quality-of-life-outcomes-after-transcatheter-aortic-valve-replacement-in-an-unselected-population-a-report-from-the-sts-acc-transcatheter-valve-therapy-registry
#11
Suzanne V Arnold, John A Spertus, Sreekanth Vemulapalli, Zhuokai Li, Roland A Matsouaka, Suzanne J Baron, Amit N Vora, Michael J Mack, Matthew R Reynolds, John S Rumsfeld, David J Cohen
Importance: In clinical trials, transcatheter aortic valve replacement (TAVR) has been shown to improve symptoms and quality of life. As this technology moves into general clinical practice, evaluation of the health status outcomes among unselected patients treated with TAVR is of critical importance. Objective: To examine the short- and long-term health status outcomes of surviving patients after TAVR in the context of an unselected population. Design, Setting, and Participants: This observational cohort study included patients with severe aortic stenosis who underwent TAVR in the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy (TVT) Registry from November 1, 2011, to March 31, 2016, at more than 450 clinical sites...
February 1, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28134404/-takotsubo-cardiomyopathy-recurrence-in-patient-with-chronic-kidney-disease-case-report-and-literature-review
#12
Francesco Caccetta, Maurizio Caroppo, Fernando Musio, Anna Mudoni, Antonella Accogli, Maria Dolores Zacheo, Domenica Burzo, Rolando Mangia, Michele Accogli, Vitale Nuzzo
Takotsubo cardiomyopathy (CT) is a syndrome characterized by an acute and transient left ventricular dysfunction, electrocardiographic abnormalities suggestive of acute coronary syndrome, chest pain and/or dyspnea, left ventricular mid-apical segments akinesia and normal coronary angiography. It is mainly observed in postmenopausal women after an intense physical or mental stress. The course is usually favourable but sometimes severe complications occur. The recurrence rate is 2-10%. We present the case of a recurrence of CT in a female, 79 years old, with hypertension, diabetes, chronic kidney disease (CKD) stage 3 who was admitted to the emergency room for dyspnea and vomiting...
November 2016: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28134226/-the-evaluation-of-the-ventricular-arrhythmias-and-interventions-of-cardiac-implantable-electronic-devices-in-patients-with-dilated-cardiomyopathy-for-primary-prevention-of-sudden-cardiac-death-in-ambulatory-and-telemetric-follow-up
#13
Jacek Lelakowski, Anna Rydlewska, Maria Lelakowska, Joanna Pudło, Justyna Piekarz
: Telemetric follow-up (RM) after cardiac devices implantation is not inferior to classic follow-up and enables earlier clinical complications detection. AIM: The aim of the study was to evaluation of the ventricular arrhythmias and interventions of ICD/CRTD in ambulatory and telemetric follow-up in patients with dilated cardiomyopathy. MATERIALS AND METHODS: Group A (CRT-D+ICD) - retrospective, patients followed-up in outpatient clinic - was consisted with 273 patients (mean age 65±11 years, 230M)...
January 23, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28128361/protective-effect-of-butin-against-ischemia-reperfusion-induced-myocardial-injury-in-diabetic-mice-involvement-of-the-ampk-gsk-3%C3%AE-nrf2-signaling-pathway
#14
Jialin Duan, Yue Guan, Fei Mu, Chao Guo, Enhu Zhang, Ying Yin, Guo Wei, Yanrong Zhu, Jia Cui, Jinyi Cao, Yan Weng, Yanhua Wang, Miaomiao Xi, Aidong Wen
Hyperglycemia-induced reactive oxygen species (ROS) generation contributes to development of diabetic cardiomyopathy (DCM). This study was designed to determine the effect of an antioxidant butin (BUT) on ischemia/reperfusion-induced myocardial injury in diabetic mice. Myocardial ischemia/reperfusion (MI/R) was induced in C57/BL6J diabetes mice. Infarct size and cardiac function were detected. For in vitro study, H9c2 cells were used. To clarify the mechanisms, proteases inhibitors or siRNA were used. Proteins levels were investigated by Western blotting...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28128227/sodium-myoinositol-cotransporter-1-smit1-mediates-the-production-of-reactive-oxygen-species-induced-by-hyperglycemia-in-the-heart
#15
Anne Van Steenbergen, Magali Balteau, Audrey Ginion, Laura Ferté, Sylvain Battault, Christophe de Meester de Ravenstein, Jean-Luc Balligand, Evangelos-Panagiotis Daskalopoulos, Patrick Gilon, Florin Despa, Sanda Despa, Jean-Louis Vanoverschelde, Sandrine Horman, Hermann Koepsell, Gerard Berry, Louis Hue, Luc Bertrand, Christophe Beauloye
Hyperglycemia (HG) stimulates the production of reactive oxygen species in the heart through activation of NADPH oxidase 2 (NOX2). This production is independent of glucose metabolism but requires sodium/glucose cotransporters (SGLT). Seven SGLT isoforms (SGLT1 to 6 and sodium-myoinositol cotransporter-1, SMIT1) are known, although their expression and function in the heart remain elusive. We investigated these 7 isoforms and found that only SGLT1 and SMIT1 were expressed in mouse, rat and human hearts. In cardiomyocytes, galactose (transported through SGLT1) did not activate NOX2...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28124457/effects-of-silymarin-on-diabetes-mellitus-complications-a-review
#16
REVIEW
Aline Maria Stolf, Cibele Campos Cardoso, Alexandra Acco
Diabetes mellitus is a common metabolic disorder that is caused by a deficit in the production of (type 1) or response to (type 2) insulin. Diabetes mellitus is characterized by a state of chronic hyperglycemia and such symptoms as weight loss, thirst, polyuria, and blurred vision. These disturbances represent one of the major causes of morbidity and mortality nowadays, despite available treatments, such as insulin, insulin secretagogues, insulin sensitizers, and oral hypoglycemic agents. However, many efforts have been made to discover new drugs for diabetes treatment, including medicinal plant extracts...
January 25, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28106847/combination-of-morroniside-and-diosgenin-prevents-high-glucose-induced-cardiomyocytes-apoptosis
#17
Wen-Xia Pi, Xiao-Peng Feng, Li-Hong Ye, Bao-Chang Cai
Cornus officinalis and Dioscorea opposita are two traditional Chinese medicines widely used in China for treating diabetes mellitus and its complications, such as diabetic cardiomyopathy. Morroniside (Mor) of Cornus officinalis and diosgenin (Dio) of Dioscorea opposita formed an innovative formula named M + D. The aims of the present study were to investigate myocardial protective effect of M + D on diabetic cardiomyopathy (DCM) through the inhibition of expression levels of caspase-3 protein, and identify the advantage of M + D compared with Mor, Dio, and the positive drug metformin (Met)...
January 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28105734/calcium-calmodulin-dependent-protein-kinase-mediates-the-intracellular-signaling-pathways-of-cardiac-apoptosis-in-mice-with-impaired-glucose-tolerance
#18
Marilen Federico, Enrique L Portiansky, Leandro Sommese, Francisco J Alvarado, Paula G Blanco, Carolina N Zanuzzi, John Dedman, Marcia Kaetzel, Xander H T Wehrens, Alicia Mattiazzi, Julieta Palomeque
Background The impact of cardiac apoptosis in pre-diabetic stages of diabetic cardiomyopathy is unknown. We described that myocytes from fructose-rich diet (FRD) animals exhibit arrhythmias produced by exacerbated Ca(2+) /calmodulin-protein kinase (CaMKII) activity, ryanodine receptors (RyR2) phosphorylation and sarcoplasmic reticulum (SR) Ca(2+) leak. We tested the hypothesis that this mechanism also underlies cardiac apoptosis in pre-diabetes. Methods and Results We generated a pre-diabetic model in mice fed with FRD...
January 20, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28072930/left-ventricular-outflow-tract-obstruction-be-prepared
#19
J S Evans, S J Huang, A S McLean, M Nalos
The current trend to treat hypotension in critically ill patients is to place a greater emphasis on inotropic support and less on fluid resuscitation in order to limit the potential harm from fluid overload. This combination may trigger left ventricular outflow tract obstruction (LVOTO) in susceptible patients. Although LVOTO is classically described in patients with hypertrophic cardiomyopathy it has been reported in other conditions including septic shock, apical ballooning syndrome, myocardial infarction, respiratory failure, and post valvular surgery...
January 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/28069019/ppars-modulate-cardiac-metabolism-and-mitochondrial-function-in-diabetes
#20
REVIEW
Ting-Wei Lee, Kuan-Jen Bai, Ting-I Lee, Tze-Fan Chao, Yu-Hsun Kao, Yi-Jen Chen
Diabetic cardiomyopathy is a major complication of diabetes mellitus (DM). Currently, effective treatments for diabetic cardiomyopathy are limited. The pathophysiology of diabetic cardiomyopathy is complex, whereas mitochondrial dysfunction plays a vital role in the genesis of diabetic cardiomyopathy. Metabolic regulation targeting mitochondrial dysfunction is expected to be a reasonable strategy for treating diabetic cardiomyopathy. Peroxisome proliferator-activated receptors (PPARs) are master executors in regulating glucose and lipid homeostasis and also modulate mitochondrial function...
January 10, 2017: Journal of Biomedical Science
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