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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...

Complications of Diabetes Mellitus

Complications of Diabetes Mellitus

Diabetes mellitus is a chronic metabolic disorder characterized by persistent hyperglycemia due to insulin deficiency, resistance, or both. Prolonged hyperglycemia disrupts metabolic homeostasis and leads to acute and chronic complications.Acute ComplicationsAcute complications result from sudden metabolic imbalance.Diabetic ketoacidosis (DKA) mainly appears in type 1 diabetes but may also develop in type 2 diabetes, particularly under extreme stress. It arises from severe insulin deficiency,...

Type I Diabetes II: Pathophysiology

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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 uptake of...

Type II Diabetes II: Pathophysiology

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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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Quantification of Diabetes-induced Adherent Leukocytes in Retinal Vasculature

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Published on: January 24, 2025

[Update on diabetic macroangiopathy].

J Kunz¹

¹Lilienthalstr. 19, 14612, Falkensee, Deutschland. kunz14612@web.de

|May 12, 2012

Summary

This summary is machine-generated.

Diabetes mellitus (DM) macroangiopathy involves complex factors like advanced glycation end products (AGEs) and impaired collateral artery formation. Understanding these mechanisms is key to managing diabetic vascular complications.

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Area of Science:

Cardiovascular Medicine
Endocrinology
Pathology

Background:

Macroangiopathy is a serious complication of diabetes mellitus (DM).
Atherosclerosis in DM exhibits distinct morphological, immunohistochemical, and molecular features.
Existing literature on the multifactorial genesis of diabetic macroangiopathy requires synthesis.

Purpose of the Study:

To compile and analyze current literature on the multifactorial genesis of macroangiopathy in diabetes mellitus.
To elucidate the morphological, immunohistochemical, and molecular characteristics of this diabetic vascular complication.
To identify key factors contributing to accelerated atherosclerosis and impaired vascular repair in diabetic patients.

Main Methods:

Literature review and compilation of findings from the PubMed database.
Analysis of studies focusing on advanced glycation end products (AGEs), signal transduction, and matrix metalloproteinases.
Inclusion of research on arteriogenesis, prothrombotic factors, diabetic neuropathy, and endothelial progenitor cells.

Main Results:

Advanced glycation end products (AGEs), defective signal transduction, and matrix metalloproteinase imbalance contribute to atherosclerosis progression in DM.
Restricted collateral artery formation (arteriogenesis) is a significant issue in diabetic patients with ischemic lesions.
Increased prothrombotic factors and diabetic neuropathy play roles in the development and progression of diabetic macroangiopathy.

Conclusions:

Diabetic macroangiopathy results from a complex interplay of factors including AGEs, impaired vascular repair mechanisms, and prothrombotic states.
Therapeutic strategies targeting AGE-RAGE interactions and enhancing endothelial progenitor cell function show promise for vascular repair in DM.
Further research is needed to fully understand and effectively treat the multifaceted vascular complications of diabetes mellitus.