Leave a reply History Hypertrophic cardiomyopathy HCM the most frequent genetic cardiovascular disease is seen as a heterogeneous phenotypic appearance. RV systolic function M: Bottom line Truncal however not appendicular or epicardial unwanted fat amount appears to be related with optimum IVS width the hallmark feature inside our cohort of HCM sufferers. Further prospective studies are had a need to assess a potential causative aftereffect of central adiposity on HCM phenotype.
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Abstract The prevalence of cardiac diabetic diseases has been increased around the world, being the most common cause of death and disability among diabetic patients. In particular, diabetic cardiomyopathy is characterized with a diastolic dysfunction and cardiac remodelling without signs of hypertension and coronary artery diseases.
In an early stage, it is an asymptomatic disease; however, clinical studies demonstrate that diabetic myocardia are more vulnerable to injury derived by acute myocardial infarct and are the worst prognosis for rehabilitation.
Currently, biochemical and imaging diagnostic methods are unable to detect subclinical manifestation of the disease prior to diastolic dysfunction.
In this review, we elaborately discuss the current scientific evidences to propose circulating microRNAs as promising biomarkers for early detection of diabetic cardiomyopathy and, then, to identify patients at high risk of diabetic cardiomyopathy development. Moreover, here we summarise the research strategies to identify miRNAs as potential biomarkers, present limitations, challenges, and future perspectives.
Introduction The global prevalence of diabetes was estimated as million people in and expected to increase to million by Diabetes is a chronic disease that leads to multisystem complications such as nephropathy, retinopathy, neuropathy, and cardiovascular diseases.
In alone about 4. Diabetes slowly reduces heart function, 1 promoting the generation of atheroma in coronary arteries atherosclerosisreducing oxygen and nutrient supply to cardiac cells [ 2 ], 2 impairing autonomic nerve fibres that innervate the blood vessels and heart that produce abnormalities in control heart rate arrhythmia and vessels dynamics cardiac autonomic neuropathy [ 3 ], and 3 reducing contractile capacity of muscle cells and decreasing capillarity irrigation of myocardium diabetic cardiomyopathy [ 4 ].
While atherosclerosis is well known to increase the risk of heart failure through an episode of ischemia, the weakening of the cardiac fibres by the silent progression of diabetic cardiomyopathy is not accounted due to technical limitations in its subclinical detection.
Population-based cohort studies reported by From et al. In fact, Shah et al. Diabetic cardiomyopathy was defined first in as a heart failure without signs of coronary artery disease, hypertension, or valvular or congenital heart disease by Rubler et al.
In spite of the differences in etiology and metabolic profile, many pathophysiologic features of this cardiomyopathy are shared by diabetes mellitus type 1 DMT1 and diabetes mellitus type 2 DMT2 [ 8 ]. Considering these common pathophysiological mechanisms, in a prediabetic and diabetic state, plasma level of free fatty acid FFA is increased, producing an augmented uptake, accumulation, and oxidation of FFA in the cardiomyocytes.
The excess of FFA utilization generates a concomitant suppression of glucose oxidation by the indirect inhibition of the pyruvate dehydrogenase and a downregulation of glucose transporters 1 and 4 GLUT1 and GLUT4establishing a metabolic derangement.
The deficiency of glycolysis intermediates decreases the mitochondrial ATP synthesis by oxidative phosphorylation. The excessive ROS production stimulates apoptotic signals by ceramide generation and mitochondrial cytochrome c release [ 10 ].
The remodelling of extracellular matrix is characterized by an interstitial and perivascular fibrosis and abnormalities in microvasculature [ 11 ]. In a latent subclinical period, metabolic disturbances and structural abnormalities lead to a diastolic dysfunction, which subsequently progresses to left ventricular hypertrophy, contractility reserve impairment, and, eventually, a systolic dysfunction [ 12 ].The stars indicate mutations identified in patients with restrictive cardiomyopathy in numerical order: LeuGln identified in H38, ArgTrp identified in H and H, AlaThr identified in H, LysGlu identified in H, AspHis identified in H, and ArgHis identified in H Introduction Hypertrophic cardiomyopathy (HCM) is an autosomally transmitted cardiomyopathy with an estimated gene prevalence of , and an important cause of sudden cardiac death.
Screening to identify at risk first degree relatives is therefore recommended. The British Heart Foundation (BHF. Generally, in any one family with inherited heart muscle condition there is usually one faulty gene that is responsible for the condition; however occasionally there are two or more faulty genes identified as a cause of the cardiomyopathy.
Genetic testing is not widely available for the cardiomyopathies; however there are a number of centres which offer limited screening.
Mutations in troponin T (TNNT2) gene represent the important part of currently identified disease-causing mutations in hypertrophic (HCM) and dilated (DCM) cardiomyopathy. Introduction. Arrhythmogenic right ventricular cardiomyopathy (ARVC, Online Mendelian Inheritance in Man (OMIM) ) is an inheritable structural heart disease first described by Frank et al.1 The first comprehensive clinical description of a cohort of ARVC patients was reported in by Marcus et al2 among adults with ventricular tachyarrhythmias of left bundle branch block morphology.
Cardiomyopathy refers to diseases of the heart muscle.
In cardiomyopathy, the heart muscle becomes thick or rigid, which can weaken the heart. Learn more about causes, risk factors, screening and prevention, signs and symptoms, diagnoses, and treatments for cardiomyopathy.