Related Experiment Video

Updated: Sep 22, 2026

Trypsin Digest Protocol to Analyze the Retinal Vasculature of a Mouse Model
09:03

Trypsin Digest Protocol to Analyze the Retinal Vasculature of a Mouse Model

Published on: June 13, 2013

Pathophysiology of Diabetic Retinopathy

Hideharu Funatsu, Hidetoshi Yamashita

    Drug News & Perspectives
    |April 5, 2003
    PubMed

    Insights

    Sustained hyperglycemia in diabetes activates biochemical pathways, influencing factors that cause diabetic retinopathy. Understanding these interactions may lead to new adjuvant therapies for this condition.

    Area of Science:

    • Biochemistry
    • Ophthalmology
    • Diabetology

    Background:

    • Sustained hyperglycemia in diabetes mellitus activates multiple biochemical pathways.
    • These activated pathways contribute to the development of diabetic retinopathy.
    • Key pathways include the polyol pathway, nonenzymatic glycation, oxidative stress, protein kinase Cbeta, and the renin-angiotensin system.

    Purpose of the Study:

    • To explore the biochemical pathways involved in diabetic retinopathy.
    • To understand the role of vasoactive factors and cytokines in the disease.
    • To identify potential targets for adjuvant therapies.

    Main Methods:

    • Review and synthesis of existing literature on biochemical pathways in diabetes.
    • Analysis of the interplay between hyperglycemia-activated pathways and vasoactive factors.
    • Examination of regulatory mechanisms controlling these factors.

    Main Results:

    • Hyperglycemia activates interconnected pathways (polyol, glycation, oxidative stress, PKCbeta, RAS).
    • These pathways influence vasoactive factors and cytokines (VEGF, IL-6, PEDF, endostatin).
    • These factors mediate functional and structural changes in diabetic retinopathy.

    Conclusions:

    • Diabetic retinopathy pathogenesis involves complex interactions between multiple biochemical systems.
    • Understanding these intricate regulatory mechanisms is crucial.
    • This knowledge may facilitate the development of novel adjuvant therapies for diabetic retinopathy.

    More Related Videos

    Retinal Pathophysiological Evaluation in a Rat Model09:11

    Retinal Pathophysiological Evaluation in a Rat Model

    Published on: May 6, 2022

    An Assay to Detect Protection of the Retinal Vasculature from Diabetes-Related Death in Mice04:36

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

    Published on: January 12, 2024

    Related Concept Videos

    Pathophysiology of Diabetes01:20

    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 I Diabetes II: Pathophysiology01:26

    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...
    Type II Diabetes II: Pathophysiology01:24

    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 Retinopathy01:27

    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 Nephropathy01:28

    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...
    Diabetic Neuropathy01:22

    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...