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Diabetic Cardiomyopathy

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https://www.readbyqxmd.com/read/28533752/protocatechuic-acid-a-phenolic-from-sansevieria-roxburghiana-leaves-suppresses-diabetic-cardiomyopathy-via-stimulating-glucose-metabolism-ameliorating-oxidative-stress-and-inhibiting-inflammation
#1
Niloy Bhattacharjee, Tarun K Dua, Ritu Khanra, Swarnalata Joardar, Ashis Nandy, Achintya Saha, Vincenzo De Feo, Saikat Dewanjee
Persistent hyperglycemia, impairment of redox status and establishment of inflammatory pathophysiology integrally play important role in the pathogenesis of diabetic cardiomyopathy (DC). Present study examined the therapeutic potential of protocatechuic acid isolated from the Sansevieria roxburghiana rhizomes against DC employing rodent model of type 2 diabetes (T2D). T2D was induced by high fat diet + a low-single dose of streptozotocin (35 mg/kg, i.p.). T2D rats exhibited significantly (p < 0.01) high fasting blood glucose level...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28533215/inhibition-of-hdac3-prevents-diabetic-cardiomyopathy-in-ove26-mice-via-epigenetic-regulation-of-dusp5-erk1-2-pathway
#2
Zheng Xu, Qian Tong, Zhiguo Zhang, Shudong Wang, Yang Zheng, Qiuju Liu, Lingbo Qian, Shao-Yu Chen, Jian Sun, Lu Cai
Inhibition of total histone deacetylases (HDACs) was phenomenally associated with the prevention of diabetic cardiomyopathy (DCM). However, which specific HDAC plays the key role in DCM remains unclear. The present study was designed to determine whether DCM can be prevented by specific inhibition of HDAC3 and to elucidate the mechanisms by which inhibition of HDAC3 prevent DCM. Type 1 diabetes OVE26 and age-matched wild-type mice were given the selective HDAC3 inhibitor RGFP966 or vehicle for 3 months. These mice were then sacrificed immediately or 3 months later for cardiac function and pathological examination...
May 22, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28532199/determination-of-the-fetal-myocardial-performance-index-in-women-with-gestational-impaired-glucose-tolerance-and-to-assess-whether-this-parameter-is-a-possible-prognostic-indicator-of-adverse-fetal-outcome
#3
Ismail Bhorat, Morgan Pillay, Tarylee Reddy
AIM: The aim of this study was to investigate if the myocardial performance index (MPI) is altered in fetuses in women with gestational impaired glucose tolerance (GIGT), controlled on diet and whether this parameter is also predictive of adverse outcome in this group, as in poorly controlled gestational diabetes. METHOD: In a prospective cross-sectional study thirty two women with gestational impaired glucose tolerance on diet in the 3(rd) trimester were recruited and matched with 32 women with normal pregnancies (control group)...
May 22, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28526033/effects-of-exenatide-on-cardiac-function-perfusion-and-energetics-in-type-2-diabetic-patients-with-cardiomyopathy-a-randomized-controlled-trial-against-insulin-glargine
#4
Weena J Y Chen, Michaela Diamant, Karin de Boer, Hendrik J Harms, Lourens F H J Robbers, Albert C van Rossum, Mark H H Kramer, Adriaan A Lammertsma, Paul Knaapen
BACKGROUND: Multiple bloodglucose-lowering agents have been linked to cardiovascular events. Preliminary studies showed improvement in left ventricular (LV) function during glucagon-like peptide-1 receptor agonist administration. Underlying mechanisms, however, are unclear. The purpose of this study was to investigate myocardial perfusion and oxidative metabolism in type 2 diabetic (T2DM) patients with LV systolic dysfunction as compared to healthy controls. Furthermore, effects of 26-weeks of exenatide versus insulin glargine administration on cardiac function, perfusion and oxidative metabolism in T2DM patients with LV dysfunction were explored...
May 19, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28522755/increased-left-ventricular-extracellular-volume-and-enhanced-twist-function-in-type-1-diabetic-individuals
#5
Zainisha Vasanji, Ronald J Sigal, Neil Derek Eves, Debra L Isaac, Matthias G Friedrich, Kelvin Chow, Richard B Thompson
Individuals with type 1 diabetes (T1D) characteristically have high glycemic levels that over time can result in reactive fibrosis and abnormalities in myocardial function. T1 mapping with magnetic resonance imaging (MRI) can estimate the extent of reactive fibrosis by measurement of the extracellular volume fraction (ECV). The extent of alterations in the ECV and associated changes in left ventricular (LV) function and morphology in individuals with T1D is unknown. Fourteen individuals with long-term T1D and fourteen sex-, age-, and body mass index-matched controls without diabetes underwent MRI measurement of myocardial T1 and ECV values as well as LV function and morphology...
May 18, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28518143/calcium-sensing-receptor-protects-high-glucose-induced-energy-metabolism-disorder-via-blocking-gp78-ubiquitin-proteasome-pathway
#6
Yuehong Wang, Ping Gao, Can Wei, Hongzhu Li, Li Zhang, Yajun Zhao, Bo Wu, Ye Tian, Weihua Zhang, Lingyun Wu, Rui Wang, Changqing Xu
Diabetic cardiomyopathy (DCM) is a major complication and fatal cause of the patients with diabetes. The calcium sensing receptor (CaSR) is a G protein-coupled receptor, which is involved in maintaining calcium homeostasis, regulating cell proliferation and apoptosis, and so on. In our previous study, we found that CaSR expression, intracellular calcium levels and cardiac function were all significantly decreased in DCM rats; however, the exact mechanism are not clear yet. The present study revealed the protective role of CaSR in myocardial energy metabolism disorder induced by high glucose (HG) as well as the underlying mechanism...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28511329/-therapeutic-effect-of-combined-use-of-fgf1-loaded-nano-liposomes-and-ultrasound-targeted-microbubble-destruction-technique-on-treating-rats-with-experimental-diabetic-cardiomyopathy
#7
M Zhang, Y Z Zhao, W C Ma, J L Xu, J L Wang, M J Chen, L Yu, Y N Chen
Objective: The therapeutic effect of acid fibroblast growth factor 1(FGF1) on rats with diabetic cardiomyopathy (DCM) was evaluated by using nano-liposomes combined with ultrasound-targeted microbubble destruction technique (UTMD). Methods: The FGF1-loaded nano-liposomes were prepared by water-in-water emulsion method combined with lyophilization technique.TypeⅠdiabetes model was induced by intraperitoneal injection of streptozotocin (STZ, 70 mg/kg) in 60 male SD rats.Sixteen weeks later, diabetic rats were randomly divided into: placebo group (saline treatment), FGF1 group, FGF1-loaded nano-liposomes group, and FGF1-loaded nano-liposomes plus UTMD group (n=15 each)...
May 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28499416/cardioprotective-potential-of-n-acetyl-cysteine-against-hyperglycaemia-induced-oxidative-damage-a-protocol-for-a-systematic-review
#8
Phiwayinkosi V Dludla, Bongani B Nkambule, Stephanie C Dias, Rabia Johnson
BACKGROUND: Hyperglycaemia-induced oxidative damage is a well-established factor implicated in the development of diabetic cardiomyopathy (DCM) in diabetic individuals. Some of the well-known characteristics of DCM include increased myocardial left ventricular wall thickness and remodelling that result in reduced cardiac efficiency. To prevent this, an increasing number of pharmacological compounds such as N-acetyl cysteine (NAC) are explored for their antioxidant properties. A few studies have shown that NAC can ameliorate hyperglycaemia-induced oxidative damage within the heart...
May 12, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28496544/hemodynamic-effects-of-sodium-glucose-cotransporter-2-inhibitors
#9
REVIEW
Motoaki Sano
It is widely accepted that obesity and type 2 diabetes mellitus (T2DM) increase the risk of heart failure (HF) independently of underlying coronary artery disease. The changes in myocardial structure or function associated with diabetes have been termed diabetic cardiomyopathy. Corresponding to changes in the risk factors for HF, an epidemiologic transition is underway from HF with a reduced ejection fraction to HF with a preserved ejection fraction. Hyperglycemia can damage the myocardium, even before diagnosis of diabetes, but intensive glycemic control has no impact on the risk of HF in patients with T2DM...
June 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28487781/hypocalciuric-hypercalcemia-due-to-impaired-renal-tubular-calcium-excretion-in-a-type-2-diabetic-patient
#10
Sihao Yang, Yan Ren, Xi Li, Haoming Tian, Zhenmei An, Tao Chen
The case we presented here was a 73-year-old gentleman, who was admitted to endocrinology department due to recurrent fatigue for 1 year. He had medical histories of type 2 diabetes for 18 years and developed CKD 4 years ago. He also suffered from dilated cardiomyopathy, and coronary heart disease, moderate sleep apnea syndrome, primary hypothyroidism, and gout. His treatment regimen was complicated which included Caltrate D and compound α-keto acid (1200 mg calcium/d). Laboratory examination revealed that his serum calcium level elevated, 24-hour urine calcium output decreased, PTH level was suppressed, and 25-hydroxyvitamin D was in normal low range...
2017: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/28487469/phosphoinositide-3-kinase-p110%C3%AE-gene-delivery-limits-diabetes-induced-cardiac-nadph-oxidase-and-cardiomyopathy-in-a-mouse-model-with-established-diastolic-dysfunction
#11
Darnel Prakoso, Miles J DeBlasio, Chengxue Qin, Sarah Rosli, Helen Kiriazis, Hongwei Qian, Xiao-Jun Du, Kate L Weeks, Paul Gregorevic, Julie R McMullen, Rebecca H Ritchie
Phosphoinositide 3-kinase [PI3K (p110α)] is able to negatively regulate the diabetes-induced increase in NADPH oxidase in the heart. Patients affected by diabetes exhibit significant cardiovascular morbidity and mortality, at least in part due to a cardiomyopathy characterised by oxidative stress and left ventricular (LV) dysfunction. Thus, PI3K (p110α) may represent a novel approach to protect the heart from diabetes-induced cardiac oxidative stress and dysfunction. In the current study, we investigated the therapeutic potential of a delayed intervention with cardiac-targeted PI3K gene therapy, administered to mice with established diabetes-induced LV diastolic dysfunction...
May 9, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28483670/role-of-14-3-3%C3%AE-protein-on-cardiac-fatty-acid-metabolism-and-macrophage-polarization-after-high-fat-diet-induced-type-2-diabetes-mellitus
#12
Remya Sreedhar, Somasundaram Arumugam, Rajarajan A Thandavarayan, Vengadeshprabhu Karuppagounder, Yusuke Koga, Takashi Nakamura, Meilei Harima, Kenichi Watanabe
Diabetic cardiomyopathy (DCM), a metabolic disorder, is one of the leading causes of mortality around the world and its pathogenesis involves cardiac inflammation and altered metabolic profile. Altered fatty acid metabolism during DCM can cause macrophage polarization in which inflammatory M1 phenotype dominates over the anti-inflammatory M2 phenotype. Hence, it is essential to identify a specific target, which could revert the metabolic profile and thereby reducing the M1 macrophage polarization. 14-3-3η protein has several cellular protective functions especially in the heart as plenty of reports available in various animal models of heart failure including diabetes mellitus...
May 5, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28480597/melatonin-protects-against-diabetic-cardiomyopathy-through-mst1-sirt3-signaling
#13
Mingming Zhang, Jie Lin, Shanjie Wang, Zheng Cheng, Jianqiang Hu, Tingting Wang, Wanrong Man, Tao Yin, Wenyi Guo, Erhe Gao, Russel J Reiter, Haichang Wang, Dongdong Sun
The present study investigated the effects of melatonin on diabetic cardiomyopathy (DCM) and determined the underlying mechanisms. Echocardiography indicated that melatonin notably mitigated the adverse left ventricle remodeling and alleviated cardiac dysfunction in DCM. The mechanisms were attributed to increased autophagy, reduced apoptosis and alleviated mitochondrial dysfunction. Furthermore, melatonin inhibited Mst1 phosphorylation and promoted Sirt3 expression in DCM. These results indicated that melatonin may exert its effects through Mst1/ Sirt3 signaling...
May 8, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28473928/dka-induced-takotsubo-cardiomyopathy-in-patient-with-known-hocm
#14
Ayla Gordon, Gina LaCapra, Roberto Roberti
The first published case of Diabetic Ketoacidosis-induced Takotsubo cardiomyopathy was in 2009. Our patient is the 1st reported case of Diabetic Ketoacidosis- (DKA-) induced Takotsubo cardiomyopathy (TC) in a patient with known hypertrophic cardiomyopathy (HOCM) in the United States. In the literature, there are only two examples linking DKA to TC; however, this report focuses on the biochemical and physiological causes of TC in a patient with known HOCM and new-onset DKA. TC in previously diagnosed HOCM poses particular complications...
2017: Case Reports in Critical Care
https://www.readbyqxmd.com/read/28473471/are-targeted-therapies-for-diabetic-cardiomyopathy-on-the-horizon
#15
REVIEW
Mitchel Tate, David J Grieve, Rebecca H Ritchie
Diabetes increases the risk of heart failure approximately 2.5-fold, independent of coronary artery disease and other comorbidities. This process, termed diabetic cardiomyopathy, is characterized by initial impairment of left ventricular (LV) relaxation followed by LV contractile dysfunction. Post-mortem examination reveals that human diastolic dysfunction is closely associated with LV damage, including cardiomyocyte hypertrophy, apoptosis and fibrosis, with impaired coronary microvascular perfusion. The pathophysiological mechanisms underpinning the characteristic features of diabetic cardiomyopathy remain poorly understood, although multiple factors including altered lipid metabolism, mitochondrial dysfunction, oxidative stress, endoplasmic reticulum (ER) stress, inflammation, as well as epigenetic changes, are implicated...
May 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28472796/the-sodium-glucose-co-transporter-2-inhibitor-empagliflozin-protects-against-diabetic-cardiomyopathy-by-inhibition-of-the-endoplasmic-reticulum-stress-pathway
#16
Yang Zhou, Wei Wu
BACKGROUND/AIMS: This study aimed to determine whether or not the sodium-glucose co-transporter 2 inhibitor, empagliflozin (EMPA), can protect against diabetic cardiomyopathy (DCM) and to elucidate the related mechanism. METHODS: Rats were divided into the following four groups: a non-diabetic group; diabetic cardiomyopathy rats without EMPA treatment; and diabetic cardiomyopathy rats with EMPA treatment (low- and high-dose EMPA). Hemodynamic measurements were performed to evaluate left ventricular systolic and diastolic function...
May 4, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28472392/lung-ultrasound-as-a-translational-approach-for-non-invasive-assessment-of-heart-failure-with-reduced-or-preserved-ejection-fraction-in-mice
#17
María Villalba-Orero, Marina M López-Olañeta, Esther González-López, Laura Padrón-Barthe, Jesús M Gómez-Salinero, Jaime García-Prieto, Timothy Wai, Pablo García-Pavía, Borja Ibáñez, Luis J Jiménez-Borreguero, Enrique Lara-Pezzi
Methods and results: ─ We used LUS to study HF in a mouse model of systolic dysfunction, dilated cardiomyopathy, and in a mouse model of diastolic dysfunction, diabetic cardiomyopathy. LUS proved to be a reliable and reproducible tool to detect pulmonary congestion in mice. The combination of LUS and echocardiography allowed discriminating those mice that develop HF from those that do not, even in the presence of evident cardiac dysfunction. The study showed that LUS can be used to identify the onset of HF decompensation and to evaluate the efficacy of therapies for this syndrome...
May 4, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28472362/association-of-diabetic-macular-edema-and-proliferative-diabetic-retinopathy-with-cardiovascular-disease-a-systematic-review-and-meta-analysis
#18
Jing Xie, M Kamran Ikram, Mary Frances Cotch, Barbara Klein, Rohit Varma, Jonathan E Shaw, Ronald Klein, Paul Mitchell, Ecosse L Lamoureux, Tien Yin Wong
Importance: Previous studies on the relationship between diabetic retinopathy (DR) and cardiovascular disease (CVD) focused on the early stages of DR. Understanding whether patients with type 2 diabetes and severe stages of DR (diabetic macular edema [DME] and proliferative diabetic retinopathy [PDR]) have a higher risk of CVD will allow physicians to more effectively counsel patients. Objective: To examine the association of severe stages of DR (DME and PDR) with incident CVD in patients with type 2 diabetes...
May 4, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28465968/lower-body-weight-in-men-an-epidemiological-predictor-of-enlarged-left-atrium-in-sinus-rhythm-patients-with-dilated-heart
#19
Aurora Bakalli, Ljubica Georgievska-Ismail, Nebi Musliu, Dardan Koçinaj
BACKGROUND/AIMS: The source of thrombi in patients with dilated cardiomyopathy is not necessarily from the dilated left ventricle. Left atrium (LA) and left atrial appendage (LAA) might be in charge for relatively high rate of systemic embolizations in these patients. The main aim of our study was to identify epidemiological predictors in sinus rhythm patients with dilated heart for LA and LAA dilation and/or dysfunction. PATIENTS AND METHODS: This was a prospective cross-sectional study conducted from 2009 to 2014 in 101 sinus rhythm patients with dilated heart...
July 2016: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/28457383/kidney-transplantation-in-alstr%C3%A3-m-syndrome-case-report
#20
L Poli, G Arroyo, M Garofalo, E Choppin de Janvry, G Intini, A Saracino, R Pretagostini, F Della Pietra, P B Berloco
The Alström syndrome is a rare genetic disorder, inherited in an autosomal recessive manner. It has recently been classified as a ciliopathic disorder. Alström syndrome is a multiorgan pathology characterized by cone-rod dystrophy, hearing loss, childhood truncal obesity, insulin resistance and hyperinsulinemia, type 2 diabetes mellitus, dyslipidemia, short stature in adulthood, hypothyroidism, hypogonadism, dilated or restrictive cardiomyopathy, and progressive pulmonary, hepatic, and renal dysfunction. End-stage renal disease can occur as early as the late teens and is the leading cause of death...
May 2017: Transplantation Proceedings
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