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Electrocardiographic and histopathological characterizations of diabetic cardiomyopathy in rats
Faculty
Pharmacy
Year:
2021
Type of Publication:
ZU Hosted
Pages:
Authors:
Galal Yehya Abdelreheem Metwally
Staff Zu Site
Abstract In Staff Site
Journal:
Environmental Science and Pollution Research Springer- Nature
Volume:
Keywords :
Electrocardiographic , histopathological characterizations , diabetic cardiomyopathy , rats
Abstract:
Diabetes is a clinical condition that is associated with insulin deficiency and hyperglycemia. Cardiomyopathy, retinopathy, neuropathy, and nephropathy are well known complications of the elevated blood glucose. Diabetic cardiomyopathy is a clinical disorder that is associated with systolic and diastolic dysfunction along with cardiac fibrosis, inflammation, and elevated oxidative stress. In this study, diabetes was induced by intraperitoneal injection of streptozotocin (STZ) 50 mg/kg. We determined the plasma levels of cardiac troponin-T (cTnT) and creatinine kinase MB (CK-MB) by ELISA. Diabetic rats showed abnormal cardiac architecture and increased collagen production. Significant elevation in ST-segment, prolonged QRS, and QT-intervals and increased ventricular rate were detected. Additionally, diabetic rats showed a prolongation in P wave duration and atrial tachyarrhythmia was observed. Plasma levels of cTnT and CK-MB were elevated. In conclusion, these electrocardiographic changes (elevated ST-segment, prolonged QT interval, and QRS complex, and increased heart rate) along with histopathological changes and increased collagen formation could be markers for the development of diabetic cardiomyopathy in rats.
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