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Diabetic Retinopathy

Diabetic Retinopathy

DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...

Diabetic Nephropathy

Diabetic Nephropathy

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 occur due to afferent arteriolar...

Type I Diabetes II: Pathophysiology

Type I Diabetes II: Pathophysiology

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 uptake of...

Pathophysiology of Diabetes

Pathophysiology of Diabetes

Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility, suggesting a...

Type II Diabetes II: Pathophysiology

Type II Diabetes II: Pathophysiology

PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.

Diabetic Neuropathy

Diabetic Neuropathy

DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...

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An Assay to Detect Protection of the Retinal Vasculature from Diabetes-Related Death in Mice

An Assay to Detect Protection of the Retinal Vasculature from Diabetes-Related Death in Mice

Published on: January 12, 2024

Diabetes-associated macrovasculopathy: pathophysiology and pathogenesis.

Sayeeda Rahman¹, Tahminur Rahman, Aziz Al-Shafi Ismail

¹Department of Pharmacology, School of Medical Sciences, Kubang Kerian, University Sains Malaysia, Kelantan, Malaysia. seempi2005@yahoo.co.uk

Diabetes, Obesity & Metabolism

|October 11, 2007

Summary

Diabetic macrovasculopathy, a major cause of death in diabetes, involves atherosclerosis and endothelial dysfunction. This review explores the pathophysiology and pathogenesis of these serious vascular complications.

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Quantification of Diabetes-induced Adherent Leukocytes in Retinal Vasculature

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Area of Science:

Cardiovascular Medicine
Endocrinology
Pathophysiology

Background:

Diabetic vasculopathy encompasses microvascular and macrovascular complications.
Macrovascular disease is a leading cause of mortality and morbidity in diabetes, contributing to stroke, myocardial infarction, and peripheral vascular diseases.
Traditionally, macrovascular diseases are attributed to obstructive atherosclerotic diseases in major arteries.

Purpose of the Study:

To review the pathophysiology and pathogenesis of diabetes-associated macrovasculopathy.
To elucidate the mechanisms underlying vascular damage in diabetic patients.

Main Methods:

Literature review focusing on pathophysiology and pathogenesis of diabetic macrovasculopathy.
Analysis of pathological changes in diabetic blood vessels.

Main Results:

Pathological changes include endothelial dysfunction, reduced vascular compliance, and atherosclerosis.
Advanced glycation end products, hemodynamic alterations, hyperglycemia, and lipid modulation contribute to disease development.
Cytokine overexpression and growth factor activation are implicated.

Conclusions:

Diabetes-associated macrovasculopathy results from a complex interplay of metabolic, hemodynamic, and inflammatory factors.
Understanding these mechanisms is crucial for developing effective therapeutic strategies.