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Related Concept Videos

Complications of Diabetes Mellitus01:22

Complications of Diabetes Mellitus

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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,...
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Type II Diabetes II: Pathophysiology01:24

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.
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Diabetic Neuropathy01:22

Diabetic Neuropathy

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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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Diabetes: Symptoms, Diagnosis, and Complications01:15

Diabetes: Symptoms, Diagnosis, and Complications

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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...
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Diabetes Mellitus: Introduction01:26

Diabetes Mellitus: Introduction

56
Diabetes mellitus consists of chronic metabolic disorders characterized by persistent hyperglycemia. This elevated blood glucose results from defects in insulin secretion, impaired insulin action, or both. Insulin, produced by pancreatic β-cells, is essential for maintaining glucose homeostasis by facilitating cellular glucose uptake for energy or storage. Disruptions in insulin production or function lead to glucose accumulation in the bloodstream, causing the clinical features and...
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Diabetic Retinopathy01:27

Diabetic Retinopathy

65
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...
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Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle
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Mitochondrial dysfunction and complications associated with diabetes.

Rachel Blake1, Ian A Trounce1

  • 1Centre for Eye Research Australia, University of Melbourne, Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, 32 Gisborne Street East, Melbourne, Victoria 3002, Australia; University of Melbourne Department of Medicine, St. Vincent's Hospital, Fitzroy, Melbourne, Victoria 3065, Australia.

Biochimica Et Biophysica Acta
|November 20, 2013
PubMed
Summary
This summary is machine-generated.

Mitochondria dysfunction may accelerate diabetic complications, even with controlled blood glucose. Current rodent models do not fully replicate these diabetes-related pathologies, highlighting a need for better research tools.

Keywords:
ComplicationDiabetesMitochondriaMouse modelOxidative phosphorylationReactive oxygen species

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Area of Science:

  • Mitochondrial research
  • Diabetic complications
  • Metabolic syndrome

Background:

  • Diabetes mellitus, characterized by chronic hyperglycemia, arises from insulin secretion defects (type 1) or insulin resistance (type 2).
  • Long-term hyperglycemia leads to severe pathologies affecting kidneys, heart, retina, and peripheral nervous system.

Purpose of the Study:

  • To review the role of mitochondria in diabetic complications.
  • To evaluate rodent models for studying diabetic complications and potential treatments.

Main Methods:

  • Literature review on mitochondrial involvement in diabetes complications.
  • Analysis of current rodent models' limitations and potential.

Main Results:

  • Mitochondrial overproduction of reactive oxygen species (ROS) due to hyperglycemia may contribute to diabetic complications.
  • Existing rodent models do not comprehensively recapitulate diabetic complications.

Conclusions:

  • Inherited mitochondrial dysfunction's role in accelerating diabetic complications is unexplored.
  • Further research is needed to develop improved models for understanding and treating diabetic complications.