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Diabetic Cardiomyopathy

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https://www.readbyqxmd.com/read/28427040/cortex-mori-radicis-extract-attenuates-myocardial-damages-in-diabetic-rats-by-regulating-ers
#1
Jiangfang Lian, Jiayuan Chen, Yanyan Yuan, Jiayi Chen, M Daud M Sayed, Lin Luo, Yabing Zhu, Song Li, Shizhong Bu
Diabetic cardiomyopathy (DCM) is diagnosed when patients with diabetes develop ventricular dysfunction but do not exhibit coronary atherosclerosis or hypertension. Cortex Mori (CM) Radicis,he epidermis of the root of Morus alba L, has been traditionally used for cough treatment in oriental medicine. In this study, we investigated the protection of myocardium by CM in streptozotocin (STZ)-induced diabetic rats and the underlying mechanisms. Diabetes was induced in rats by an injection of STZ at 25mg/kg. The animals were randomly divided into 4 groups: control, diabetes, diabetes with CM treatment, diabetes with CM preventative treatment...
April 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28421204/diabetic-cardiomyopathy-current-approach-and-potential-diagnostic-and-therapeutic-targets
#2
REVIEW
Georgiana-Emmanuela Gilca, Gabriela Stefanescu, Oana Badulescu, Daniela-Maria Tanase, Iris Bararu, Manuela Ciocoiu
Although ischemic heart disease is the major cause of death in diabetic patients, diabetic cardiomyopathy (DCM) is increasingly recognized as a clinically relevant entity. Considering that it comprises a variety of mechanisms and effects on cardiac function, increasing the risk of heart failure and worsening the prognosis of this patient category, DCM represents an important complication of diabetes mellitus, with a silent development in its earlier stages, involving intricate pathophysiological mechanisms, including oxidative stress, defective calcium handling, altered mitochondrial function, remodeling of the extracellular matrix, and consequent deficient cardiomyocyte contractility...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28421194/dihydromyricetin-protects-against-diabetic-cardiomyopathy-in-streptozotocin-induced-diabetic-mice
#3
Bin Wu, Jie Lin, Jian Luo, Dong Han, Miaomiao Fan, Tao Guo, Ling Tao, Ming Yuan, Fu Yi
Diabetic cardiomyopathy (DCM) is an important cause of heart failure in diabetic patients. The present study sought to explore the potential effects of dihydromyricetin (DHM) on DCM and its possible mechanism. A diabetic model was induced by intraperitoneal injection of streptozotocin (STZ) in C57BL/6J mice. Two weeks after the STZ injection, mice were randomly allocated into the following 4 groups for treatment: the control group (CON), the control treated with DHM group (CON + DHM), the diabetes group (DM), and the diabetes treated with DHM group (DM + DHM)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28420549/predictors-of-left-ventricular-functional-recovery-and-their-impact-on-clinical-outcomes-in-patients-with-newly-diagnosed-dilated-cardiomyopathy-and-heart-failure
#4
Jae Yeong Cho, Kye Hun Kim, Ji Eun Song, Ji Eun Kim, Hyukjin Park, Hyun Ju Yoon, Nam Sik Yoon, Young Joon Hong, Hyung Wook Park, Ju Han Kim, Youngkeun Ahn, Myung Ho Jeong, Jeong Gwan Cho, Jong Chun Park
BACKGROUND: To identify the predictors of left ventricular functional recovery (LVFR) and its impacts on clinical outcomes in acute heart failure (AHF) patients with newly diagnosed dilated cardiomyopathy (DCM). METHODS: A total of 175 consecutive patients with newly diagnosed DCM and AHF were divided into two groups according to LVFR on FU echocardiography; the recovered group (n=54, 54.3±18.5years, 31 males) vs. the non-recovered group (n=121, 60.5±15.1years, 79 males)...
March 20, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28415836/diabetic-cardiomyopathy-where-we-are-and-where-we-are-going
#5
Wang-Soo Lee, Jaetaek Kim
The global burden of diabetes mellitus and its related complications are currently increasing. Diabetes mellitus affects the heart through various mechanisms including microvascular impairment, metabolic disturbance, subcellular component abnormalities, cardiac autonomic dysfunction, and a maladaptive immune response. Eventually, diabetes mellitus can cause functional and structural changes in the myocardium without coronary artery disease, a disorder known as diabetic cardiomyopathy (DCM). There are many diagnostic tools and management options for DCM, although it is difficult to detect its development and effectively prevent its progression...
April 18, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28413926/dusp-1-gene-expression-is-not-regulated-by-promoter-methylation-in-diabetes-associated-cardiac-hypertrophy
#6
Gurinder Bir Singh, Sanskriti Khanna, Satish K Raut, Saurabh Sharma, Rajni Sharma, Madhu Khullar
BACKGROUND: The exact mechanism causing decreased expression of the dual specific phosphatase-1 ( DUSP-1) gene in diabetes-associated cardiac hypertrophy is not known. DNA promoter methylation is often associated with decreased gene expression in many diseases including cardiovascular diseases. So, we investigated whether epigenetic silencing via promoter methylation is involved in the decreased expression of DUSP-1 in diabetes-associated cardiac hypertrophy. METHODS: Real-time polymerase chain reaction (PCR) and Western blotting confirmed the down regulation of the DUSP-1 gene at transcriptional and translational levels...
April 1, 2017: Therapeutic Advances in Cardiovascular Disease
https://www.readbyqxmd.com/read/28400074/regulation-of-mitochondrial-structure-and-function-by-protein-import-a-current-review
#7
REVIEW
Kanchanjunga Prasai
By generating the majority of a cell's ATP, mitochondria permit a vast range of reactions necessary for life. Mitochondria also perform other vital functions including biogenesis and assembly of iron-sulfur proteins, maintenance of calcium homeostasis, and activation of apoptosis. Accordingly, mitochondrial dysfunction has been linked with the pathology of many clinical conditions including cancer, type 2 diabetes, cardiomyopathy, and atherosclerosis. The ongoing maintenance of mitochondrial structure and function requires the import of nuclear-encoded proteins and for this reason, mitochondrial protein import is indispensible for cell viability...
March 16, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/28396699/can-the-onset-of-heart-failure-be-delayed-by-treating-diabetic-cardiomyopathy
#8
REVIEW
Anna Marcinkiewicz, Stanisław Ostrowski, Józef Drzewoski
The pathophysiology of diabetic cardiomyopathy (DC) is not fully understood. This frequently undiagnosed complication of chronic hyperglycemia leads to heart failure (HF). However, it is suggested that an appropriate metabolic control of diabetes at an early stage of this deleterious disease, is able to inhibit the development and progression of DC to HF. Recently, it has been postulated that myocardial ischaemia plays an important role in the development of this pathology. Results of the antianginal pharmacological treatment and revascularization are unsatisfactory and reveal a gap in our knowledge and current approaches to treating DC...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28396614/can-takotsubo-cardiomyopathy-be-diagnosed-by-autopsy-report-of-a-presumed-case-presenting-as-cardiac-rupture
#9
Andrew Mitchell, François Marquis
BACKGROUND: Takostsubo (stress) cardiomyopathy (TC) is a clinical syndrome featuring transient left ventricular dysfunction and wall-motion abnormalities, usually following emotional or physical stress. The diagnosis of TC depends on fulfillment of multiple clinical criteria. Although the pathogenesis has not been firmly established, myocardial cathecholamine toxicity is thought to represent a primary mechanism. The vast majority of patients with TC survive. However, a rare cause of death in TC is myocardial rupture...
2017: BMC Clinical Pathology
https://www.readbyqxmd.com/read/28395010/inflammation-and-metabolic-cardiomyopathy
#10
Kazuhiko Nishida, Kinya Otsu
Excessive feeding is associated with an increase in the incidence of chronic metabolic diseases, such as obesity, insulin resistance, and type 2 diabetes. Metabolic disturbance induces chronic low-grade inflammation in metabolically-important organs, such as the liver and adipose tissue. Many of the inflammatory signalling pathways are directly triggered by nutrients. The pro-inflammatory mediators in adipocytes and macrophages infiltrating adipose tissue promote both local and systemic pro-inflammatory status...
March 15, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28395009/an-overview-of-the-inflammatory-signalling-mechanisms-in-the-myocardium-underlying-the-development-of-diabetic-cardiomyopathy
#11
Giacomo Frati, Leonardo Schirone, Isotta Chimenti, Derek Yee, Giuseppe Biondi-Zoccai, Massimo Volpe, Sebastiano Sciarretta
Heart failure is a highly morbid and mortal clinical condition that represents the last stage of most cardiovascular disorders. Diabetes is strongly associated with an increased incidence of heart failure and directly promotes cardiac hypertrophy, fibrosis, and apoptosis. These changes, in turn, contribute to the development of ventricular dysfunction. The clinical condition associated with the spectrum of cardiac abnormalities induced by diabetes is termed diabetic cardiomyopathy. Myocardial inflammation has recently emerged as a pathophysiological process contributing to cardiac hypertrophy, fibrosis, and dysfunction in cardiac diseases...
March 15, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28394420/tiron-ameliorates-high-glucose-induced-cardiac-myocyte-apoptosis-by-pkc%C3%AE-dependent-inhibition-of-osteopontin
#12
Ping Jiang, Deling Zhang, Hong Qiu, Xianqi Yi, Yemin Zhang, Yingkang Cao, Bo Zhao, Zhongyuan Xia, Changhua Wang
Tiron functions as an effective antioxidant alleviating the intracellular reactive oxygen species (ROS) or the acute toxic metal overload. The previous studies have shown that cardiac myocyte apoptosis can be effectively inhibited by tiron administration in streptozotocin (STZ)-induced diabetic rats, primary neonatal rat cardiomyocytes (NRVMs), and H9c2 embryonic rat cardiomyocytes. However, the underlying signaling mechanism is ill-defined. In the present study, we found that tiron supplementation significantly inhibited apoptosis of high glucose (HG)-treated NRVMs and the left ventricular cardiomyocytes from STZ-diabetic rat, accompanied with a reduction of osteopontin (OPN) levels as well as an inhibition of PKCδ phosphorylation...
April 10, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28393273/age-dependent-development-of-left-ventricular-wall-thickness-in-type-2-diabetic-db-db-mice-is-associated-with-elevated-low-density-lipoprotein-and-triglyceride-serum-levels
#13
Phiwayinkosi V Dludla, M Faadiel Essop, Kwazi B Gabuza, Christo J F Muller, Johan Louw, Rabia Johnson
Diabetic cardiomyopathy (DCM) is a disease of heart muscle that remains one of the leading causes of death in diabetic individuals. Shifts in substrate preference resulting in aberrant serum lipid content and enlarged left ventricular wall thickness are well-established characteristics associated with the development of DCM. As underlying mechanisms driving the onset of the DCM remain relatively unclear, this study sought to characterize age-dependent development of left ventricular (LV) wall thickness in diabetic (db/db) mice...
April 9, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28389131/autophagy-metabolic-disease-and-pathogenesis-of-heart-dysfunction
#14
REVIEW
Fulong Wang, Jocelyn Jia, Brian Rodrigues
In normal physiology, autophagy is recognized as a protective housekeeping mechanism that enables elimination of unhealthy organelles, protein aggregates, and invading pathogens, as well as recycling cell components and producing new building blocks and energy for cellular renovation and homeostasis. However, overactive or depressed autophagy is often associated with the pathogenesis of multiple disorders, including cardiac disease. During metabolic disorders, such as diabetes and obesity, dysregulation of autophagy frequently leads to cell death, cardiomyopathy, and cardiac dysfunction...
January 14, 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28381504/insulin-receptor-substrate-signaling-controls-cardiac-energy-metabolism-and-heart-failure
#15
Cathy A Guo, Shaodong Guo
The heart is an insulin-dependent and energy consuming organ in which insulin and nutritional signaling integrates to the regulation of cardiac metabolism, growth, and survival. Heart failure is highly associated with insulin resistance and heart failure patients suffer from the cardiac energy deficiency, structural and functional dysfunction. Chronic pathological conditions, such as obesity and type 2 diabetes mellitus, involve various mechanisms in promoting heart failure by remodeling metabolic pathways, modulating cardiac energetics, and impairing cardiac contractility...
April 5, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28380414/the-role-of-sirt1-in-diabetic-cardiomyopathy
#16
REVIEW
Hedyieh Karbasforooshan, Gholamreza Karimi
The prevalence of diabetes mellitus (DM) has been increasing worldwide. Diabetic cardiomyopathy (DCP) is the major risk for diabetes associated morbidity and mortality. Hyperglycemia and hyperinsulinemia play an indispensable role in underlying mechanisms of DCP. They increase advanced glycation end products (AGEs) following a series of events leading to myocardial damage and cardiomyopathy which include oxidative stress, increased inflammation, fibrosis, hypertrophy and apoptosis. SIRT1 is a nicotinamide adenosine dinucleotide (NAD)-dependent deacetylase that removes acetyl groups from proteins which can be implicated in DCP...
April 2, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28376896/regulation-of-visceral-and-epicardial-adipose-tissue-for-preventing-cardiovascular-injuries-associated-to-obesity-and-diabetes
#17
REVIEW
N González, Z Moreno-Villegas, A González-Bris, J Egido, Ó Lorenzo
Nowadays, obesity is seriously increasing in most of the populations all over the world, and is associated with the development and progression of high-mortality diseases such as type-2 diabetes mellitus (T2DM) and its subsequent cardiovascular pathologies. Recent data suggest that both body fat distribution and adipocyte phenotype, can be more determinant for fatal outcomes in obese patients than increased general adiposity. In particular, visceral adiposity is significantly linked to long term alterations on different cardiac structures, and in developed forms of myocardial diseases such as hypertensive and ischaemic heart diseases, and diabetic cardiomyopathy...
April 4, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28373293/lipid-metabolism-and-its-implications-for-type-1-diabetes-associated-cardiomyopathy
#18
Rebecca H Ritchie, Eser J Zerenturk, Darnel Prakoso, Anna C Calkin
Diabetic cardiomyopathy was first defined over four decades ago. It was observed in small post-mortem studies of diabetic patients who suffered from concomitant heart failure despite the absence of hypertension, coronary disease or other likely causal factors, as well as in large population studies such as the Framingham Heart Study. Subsequent studies continue to demonstrate an increased incidence of heart failure in the setting of diabetes independent of established risk factors, suggesting direct effects of diabetes on the myocardium...
April 3, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28373137/matrine-attenuates-cardiac-fibrosis-by-affecting-atf6-signaling-pathway-in-diabetic-cardiomyopathy
#19
Zhongwei Liu, Yong Zhang, Zhiguo Tang, Jing Xu, Meijuan Ma, Shuo Pan, Chuan Qiu, Gongchang Guan, Junkui Wang
Cardiac function and compliance impairments are the features of cardiac fibrosis. Matrine shows therapeutic effects on cardiovascular diseases and organ fibrosis. In this study, we examined the therapeutic effects and mechanisms of matrine on cardiac fibrosis of DbCM. Matrine was administrated orally to rats with DbCM. Cardiac functions and compliance were evaluated. The collagen deposition was visualized by sirius red staining. Real-time PCR was used to determine the expression level of miRNA. Western blotting was performed to assess the protein expression...
March 31, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28364094/-effect-of-nucleolin-on-cardiac-cell-apoptosis-in-type-2-diabetic-cardiomyopathy-mice
#20
Meidong Liu, Li Sun, Bimei Jiang, Sipin Tan, Ke Liu, Xianzhong Xiao
To investigate the effect of nucleolin on cardiac cell apoptosis in Type 2 diabetic cardiomyopathy mice.
 Methods: Mice were fed with high-fat and high-sugar food for 20 weeks (mice were injected intraperitoneally with 60 mg/kg streptozotocin in the 5th and 6th weeks) to establish a mouse model of Type 2 diabetes. The mice were divided into 4 groups: a wild type (WT) control group, a nucleolin transgenic (TG) control group, a WT diabetic group, a TG diabetic group. Diabetes-related indicators were detected at the end of the 8th week...
March 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
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