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Diabetic Nephropathy01:28

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Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration...
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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

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Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
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Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
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The Nucleolus02:55

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The nucleolus is the most prominent substructure of the nucleus. When it was first discovered, it was considered to be an isolated organelle that forms fibrils and granules. In 1931, the relationship between the nucleolus and chromosomes was first described by Heitz. He observed that the appearance and size of nucleolus varies depending on the stage of the cell cycle. He also noticed constricted regions on different chromosomes clustered together at definite cell cycle stages. These regions,...
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Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
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Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular...
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[Nucleolus expression in diabetic cardiomyopathy].

Li Sun1, Xin He, Juan Wang

  • 1Department of Pathophysiology, School of Basic Medical Science, Central South University, Changsha 410078, China.

Zhong Nan Da Xue Xue Bao. Yi Xue Ban = Journal of Central South University. Medical Sciences
|October 31, 2014
PubMed
Summary

Nucleolin expression is elevated in diabetic cardiomyopathy, suggesting its role in the disease. This finding in diabetic rats highlights potential therapeutic targets for this condition.

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Area of Science:

  • Cardiovascular Research
  • Metabolic Disorders
  • Molecular Biology

Background:

  • Diabetic cardiomyopathy (DCM) is a cardiac complication of diabetes mellitus.
  • Understanding the molecular mechanisms underlying DCM is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the expression of nucleolin in the context of diabetic cardiomyopathy.
  • To explore the potential role of nucleolin in the pathogenesis of DCM.

Main Methods:

  • A type II diabetic cardiomyopathy rat model was established using a high-fat, high-sugar diet and chemical induction.
  • Blood glucose levels, heart-to-body mass ratio, and myocardial morphology were assessed.
  • Immunohistochemistry and Western blot were employed to quantify myocardial nucleolin expression.

Main Results:

  • Diabetic rats exhibited significantly elevated fasting blood glucose levels compared to controls.
  • Pathological examination revealed myocardial hypertrophy, cell fracture, dissolution, and disordered arrangement in diabetic rats.
  • Myocardial nucleolin protein levels were significantly higher in the diabetic model group than in the control group.

Conclusions:

  • Nucleolin expression is upregulated in diabetic cardiomyopathy.
  • Nucleolin may be involved in the pathogenesis and progression of diabetic cardiomyopathy.