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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...

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...

Psychoneuroimmunology: Diabetes and Cancer

Psychoneuroimmunology: Diabetes and Cancer

Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...

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.

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...

Diabetes: Symptoms, Diagnosis, and Complications

Diabetes: Symptoms, Diagnosis, and Complications

For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is based on...

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Related Experiment Video

Updated: Jul 6, 2026

Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy

Live Images of GLUT4 Protein Trafficking in Mouse Primary Hypothalamic Neurons Using Deconvolution Microscopy

Published on: December 7, 2017

RAGE, diabetes, and the nervous system.

Cory Toth¹, Jose Martinez, Douglas W Zochodne

¹Department of Clinical Neurosciences and the Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada. corytoth@shaw.ca

Current Molecular Medicine

|March 12, 2008

Summary

Diabetes complications affect the nervous system, causing neuropathy and cognitive decline. Advanced glycation end products (AGEs) and their receptor (RAGE) play a key role, offering potential therapeutic targets for diabetic neurodegeneration.

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Last Updated: Jul 6, 2026

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Behavioral Assessment of Visual Function via Optomotor Response and Cognitive Function via Y-Maze in Diabetic Rats

Behavioral Assessment of Visual Function via Optomotor Response and Cognitive Function via Y-Maze in Diabetic Rats

Published on: October 23, 2020

Area of Science:

Neuroscience
Endocrinology
Pathology

Background:

Diabetes mellitus is a chronic condition affecting multiple organs, including the nervous system.
Diabetic neuropathy manifests as sensory loss, pain, muscle weakness, and gait impairment.
Diabetes is linked to brain atrophy, white matter changes, cognitive deficits, and increased dementia risk.

Purpose of the Study:

To review current knowledge on diabetes- and RAGE-mediated neurodegeneration.
To explore the role of advanced glycation end products (AGEs) and their receptor (RAGE) in diabetic neurological complications.
To highlight the potential of targeting RAGE pathways for therapeutic interventions.

Main Methods:

Review of recent scientific literature on diabetic neuropathy and neurodegeneration.
Discussion of studies utilizing RAGE knockout mice and soluble RAGE (sRAGE).
Analysis of RAGE-mediated signaling pathways in the nervous system.

Main Results:

Advanced glycation end products (AGEs) and their receptor (RAGE) are implicated in the pathogenesis of diabetic nervous system complications.
RAGE signaling pathways are crucial in diabetes-associated neurodegeneration.
RAGE knockout mice and sRAGE have advanced understanding of these mechanisms.

Conclusions:

Diabetic neurodegeneration involves multiple levels of the nervous system, from peripheral nerves to the brain.
Targeting the AGE-RAGE axis offers a promising strategy for preventing and treating diabetic neurological complications.
Further research into RAGE-mediated pathways could lead to novel therapeutic interventions.