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Diabetic Cardiomyopathy

Wencheng Zheng, Xiaoming Shang, Chunlai Zhang, Xiang Gao, Barry Robinson, Jing Liu
OBJECTIVES: Diabetic cardiomyopathy (DCM) is characterized by cardiac dysfunction, myocardial inflammation, interstitial fibrosis and cardiomyocytes apoptosis. The present study aimed to investigate the effects of carvedilol on cardiac function and the AKT/XIAP signaling pathway in DCM rats. METHODS: Male Wistar rats were randomly divided into 3 groups: the control group, diabetic mellitus (DM) group and DM with carvedilol treatment group. DM rats were induced by streptozotocin accompanied by high energy intake...
October 26, 2016: Cardiology
Debbie C Yen, Mara H Watson, Lindsey D Burgess, Maragatha Kuchibhatla, Chetan B Patel, Kristen B Campbell, Alyssa K Vora
STUDY OBJECTIVE: To evaluate the impact of continuous-flow left ventricular assist device (LVAD) implantation on glycemic control in patients with type 2 diabetes mellitus and advanced chronic systolic heart failure. DESIGN: Retrospective medical record review. SETTING: Large, academic, tertiary and quaternary care hospital. PATIENTS: Eighty-three adults with type 2 diabetes mellitus and advanced chronic systolic heart failure who underwent implantation of a continuous-flow LVAD between July 1, 2008, and June 30, 2013...
October 25, 2016: Pharmacotherapy
Elena V Galitsyna, Margarita A Sazonova, Tatiana P Shkurat, Natalya A Demakova, Alexsandra A Melnichenko, Vasily V Sinyov, Anastasia I Ryzhkova, Konstantin Y Mitrofanov, Andrey V Zhelankin, Igor A Sobenin, Alexander N Orekhov
The present article considers chronic diseases of non-inflammatory genesis, the reasons of which may be mitochondrial dysfunctions. Among them are: coronary heart disease (CHD), hypertension, cardiomyopathy, cerebrovascular accidents and type 2 diabetes mellitus (T2D). Very often, in the long course of the disease, complications may occur, leading to myocardial infarction or ischemic stroke and as a result, death. The main cause of mitochondrial dysfunction are point mitochondrial genome mutations. During the analysis of the literature, data showing the association of the mitochondrial genome mutations with the above diseases were revealed...
October 18, 2016: Current Pharmaceutical Design
Pupalan Iyngkaran, Samia R Toukhsati, Merlin C Thomas, Michael V Jelinek, David L Hare, John D Horowitz
BACKGROUND: Beta-blockers (BBs) are the mainstay prognostic medication for all stages of chronic heart failure (CHF). There are many classes of BBs, each of which has varying levels of evidence to support its efficacy in CHF. However, most CHF patients have one or more comorbid conditions such as diabetes, renal impairment, and/or atrial fibrillation. Patient enrollment to randomized controlled trials (RCTs) often excludes those with certain comorbidities, particularly if the symptoms are severe...
2016: Clinical Medicine Insights. Cardiology
Wilson Kc Leung, L Gao, Parco M Siu, Christopher Wk Lai
An explosion in global epidemic of type 2 diabetes mellitus poses major rise in cases with vascular endothelial dysfunction ranging from micro- (retinopathy, nephropathy and neuropathy) to macro-vascular (atherosclerosis and cardiomyopathy) conditions. Functional destruction of endothelium is regarded as an early event that lays the groundwork for the development of renal microangiopathy and subsequent clinical manifestation of nephropathic symptoms. Recent research has shed some light on the molecular mechanisms of type 2 diabetes-associated comorbidity of endothelial dysfunction and nephropathy...
October 17, 2016: Life Sciences
Rajeev Bhardwaj
PURPOSE OF STUDY: Left bundle branch (LBBB) is common ECG finding. Common causes of LBBB are coronary artery disease (CAD), hypertension and dilated cardiomyopathy (DCM). Purpose of the study was to find out the etiology and left ventricular function in patients coming to a territory care hospital. MATERIAL AND METHODS: All consecutive patients coming to our hospital as indoor or outdoor patients with ECG suggestive of LBBB were studied. The detail history and examination was done...
September 2016: Journal of the Association of Physicians of India
X H Sun, M S Yin, Y L Mu
Objective: To investigate the alterations of mTOR signaling pathway and autophagy in the development of type 2 diabetes and early diabetic cardiomyopathy and to study their roles in pathogenesis of diabetic myocardium. Methods: A type 2 diabetes rat model was established by injection of streptozocin after five-week of high fat diet. The rats were randomly divided into control group, experiment group of 2 weeks and experiment group of 4 weeks. Alterations of mTOR, p-mTOR, S6K1, Beclin-1 and LC3-Ⅱ expression in myocardium were determined by Western blot and immunohistochemistry...
October 8, 2016: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
J Michael Gaziano
The health effects of alcohol have been studied for decades. While it is clear that excessive alcohol consumption is harmful, hundreds of studies have demonstrated that light to moderate alcohol consumption may reduce the risk of certain cardiovascular conditions. Light to moderate alcohol consumption has been consistently associated with lower risk of coronary heart disease (CHD) among a wide variety of population groups including men and women, those with hypertension, diabetes and heart disease. Alcohol has been associated with increases in HDL cholesterol and lower risks of diabetes...
September 2016: Journal of Hypertension
ByungSu Yoo
Hypertension is the most common risk factor for systolic and diastolic heart failure. Based on population-attributable risks, hypertension has the greatest impact on the development of heart failure, accounting for 39% of HF events in men and 59% in women. Higher blood pressure, longer duration of hypertension and older age are associated with higher incidence of heart failure however, long term control of hypertension reduces the risk of heart failure. Thus current guideline pointed the hypertension as the single most important modifiable risk factor for heart failure...
September 2016: Journal of Hypertension
Zena Huang, Xiaobian Dong, Xiaodong Zhuang, Xun Hu, Lichun Wang, Xinxue Liao
Hyperglycemia serves an important role in the pathogenesis of diabetic cardiomyopathy. The aim of the present study was to investigate whether exogenous hydrogen sulfide (H2S) protects against high glucose‑induced inflammation and cytotoxicity in cardiac cells by inhibiting the p38 mitogen‑activated protein kinase (MAPK)/nuclear factor‑κB (NF‑κB), cyclooxygenase‑2 (COX‑2) and inducible nitric oxide synthase (iNOS) signaling pathways. Rat H9c2 myocardium cells were exposed to 33 mM glucose (high glucose, HG) for 24 h to stimulate HG‑induced cytotoxicity...
October 13, 2016: Molecular Medicine Reports
Moshe Bronshtein, Zeev Blumenfeld, Asaad Choury, Ayala Gover
OBJECTIVES: To assess the natural history and outcome of fetal pulmonary stenosis [PS] detected at 14 to 16 weeks gestation. METHODS: This is a retrospective study, in the years 2004-2015, with serial follow up during pregnancy. Patients referred for complete early fetal ultrasound including all fetal systems and a fetal echocardiogram. Ninety seven percent of the women were low risk, and 3% had risk factors such as maternal type 1 diabetes mellitus, exposure to teratogenic drugs or anomalies in previous pregnancies or in other family members...
October 14, 2016: Ultrasound in Obstetrics & Gynecology
Neha Atale, Sharad Saxena, J Grace Nirmala, R T Narendhirakannan, Sujata Mohanty, Vibha Rani
There exists a complex and multifactorial relationship between diabetes and cardiovascular disease. Hyperglycemia is an important factor imposing damage (glucose toxicity) on cardiac cell leading to diabetic cardiomyopathy. There are substantial clinical evidences on the adverse effects of conventional therapies in the prevention/treatment of diabetic cardiovascular complications. Currently, green-synthesized nanoparticles have emerged as a safe, efficient, and inexpensive alternative for therapeutic uses. The present study discloses the silver nanoparticle biosynthesizing capability and cardioprotective potential of Syzygium cumini seeds already reported to have antidiabetic properties...
October 12, 2016: Applied Biochemistry and Biotechnology
Soumya Bhowmik
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
Jung Hoon Lee, Nam-Kyoo Lim, Myeong-Chan Cho, Hyun-Young Park
BACKGROUND AND OBJECTIVES: Heart failure (HF) is an important healthcare issue because of its high mortality, morbidity, and healthcare costs. The number of HF patients is increasing worldwide as a consequence of aging of the population. However, there are limited studies on the prevalence of HF in Korea. This study aimed to estimate the prevalence of HF, its comorbidities, and the projected population with HF in the future. MATERIALS AND METHODS: The prevalence and comorbidity estimates of HF were determined using data from the 2002-2013 National Sample Cohort based on the National Health Information Database...
September 2016: Korean Circulation Journal
X Qi, A Xu, Y Gao, Y Shi, X Sun, J Xu, J Liu, Q Lan, L Chang, C Zhang, H Yu
Glutaredoxin 1 (Grx1) has been found to be an important endogenous antioxidant enzyme closely related to the pathogenesis of diabetes and cardiovascular diseases caused by oxidative stress. In this study, the functional changes of the Grx1 redox system in blood of hyperglycemic patients were examined. Furthermore, using a rat model of streptozotocin (STZ)- and high-fat-diet-induced type 2 diabetes, we explored the correlation between functional changes of the Grx1 redox system in the left ventricular tissue and blood of the diabetic rats...
September 19, 2016: Genetics and Molecular Research: GMR
Julius Chacha Mwita, Matthew J Dewhurst, Mgaywa G Magafu, Monkgogi Goepamang, Bernard Omech, Koketso Lister Majuta, Marea Gaenamong, Tommy Baboloki Palai, Mosepele Mosepele, Yohana Mashalla
INTRODUCTION: Heart failure is a common cause of hospitalisation and therefore contributes to in-hospital outcomes such as mortality. In this study we describe patient characteristics and outcomes of acute heart failure (AHF) in Botswana. METHODS: Socio-demographic, clinical and laboratory data were collected from 193 consecutive patients admitted with AHF at Princess Marina Hospital in Gaborone between February 2014 and February 2015. The length of hospital stay and 30-, 90- and 180-day in-hospital mortality rates were assessed...
August 24, 2016: Cardiovascular Journal of Africa
Gurinder Bir Singh, Satish K Raut, Sanskriti Khanna, Akhilesh Kumar, Saurabh Sharma, Rishikesh Prasad, Madhu Khullar
Mitogen-activated protein kinases (MAPKs) (ERK1/2, JNK, and p38) are upregulated in diabetic cardiomyopathy (DCM). Dual-specific phosphatase-1 (DUSP-1) has been reported to regulate the activity of MAPKs in cardiac hypertrophy; however, the role of DUSP-1 in regulating MAPKs activity in DCM is not known. MicroRNAs have been reported to regulate the expression of several genes in hypertrophied failing hearts. However, little is known about the microRNAs regulating DUSP-1 expression in diabetes-related cardiac hypertrophy...
September 30, 2016: Molecular and Cellular Biochemistry
Mitsumasa Umesawa, Gen Kobashi
Hypertensive disorders in pregnancy (HDP) represent some of the most important problems faced by public health because HDP is a major cause of maternal and prenatal morbidity and mortality. Several epidemiological studies have been performed to determine the prevalence and risk factors of HDP as well as its subtypes. The prevalences of HDP, gestational hypertension and preeclampsia are 5.2-8.2%, 1.8-4.4% and 0.2-9.2%, respectively. Body mass index, anemia and lower education appear to be modifiable risk factors for HDP...
September 29, 2016: Hypertension Research: Official Journal of the Japanese Society of Hypertension
Silvina S Bombicino, Darío E Iglesias, Ivana A Rukavina Mikusic, Verónica D'Annunzio, Ricardo J Gelpi, Alberto Boveris, Laura B Valdez
Diabetes is a chronic disease associated to a cardiac contractile dysfunction that is not attributable to underlying coronary artery disease or hypertension, and could be consequence of a progressive deterioration of mitochondrial function. We hypothesized that impaired mitochondrial function precedes Diabetic Cardiomyopathy. Thus, the aim of this work was to study the cardiac performance and heart mitochondrial function of diabetic rats, using an experimental model of type I Diabetes. Rats were sacrificed after 28days of Streptozotocin injection (STZ, 60mgkg(-1), ip...
September 25, 2016: International Journal of Biochemistry & Cell Biology
Julieta Diaz-Juarez, Jorge Suarez, Federico Cividini, Brian T Scott, Tanja Diemer, Anzhi Dai, Wolfgang H Dillmann
Diabetic cardiomyopathy is associated with metabolic changes including decreased glucose oxidation (Gox) and increased fatty acid oxidation (FAox), which result in cardiac energetic deficiency. Diabetic hyperglycemia is a pathophysiological mechanism that triggers multiple maladaptive phenomena. The mitochondrial calcium uniporter (MCU) is the channel responsible for Ca(2+) uptake in mitochondria and free mitochondrial calcium concentration ([Ca(2+)]m) regulates mitochondrial metabolism. Experiments with cardiac myocytes (CM) exposed to simulated hyperglycemia revealed both reduced [Ca(2+)]m and MCU protein levels...
September 28, 2016: American Journal of Physiology. Cell Physiology
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