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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.
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Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
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Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by insulin resistance, in which target tissues such as the liver, muscle, and adipose tissue respond poorly to insulin. It is also associated with inadequate compensatory insulin secretion, where pancreatic β-cells fail to produce sufficient insulin. Together, these abnormalities lead to persistent hyperglycemia.EtiologyT2DM develops through a complex interaction of genetic predisposition and environmental or...
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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...
Diabetes Mellitus: Overview and Type I Subtype01:22

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Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
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Glycemic Impact on Knee Osteoarthritis Symptoms on Physical, Radiographic, and Inflammatory Markers among Individuals Aged 50 and Over with Diabetes
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Type 2 diabetes and bone fractures.

Kendall F Moseley1

  • 1Division of Endocrinology, Johns Hopkins Bayview Medical Center, Baltimore, Maryland, USA. kmosele4@jhmi.edu

Current Opinion in Endocrinology, Diabetes, and Obesity
|January 21, 2012
PubMed
Summary
This summary is machine-generated.

People with type 2 diabetes mellitus (T2DM) face higher fracture risks despite good bone density. Understanding the biochemical causes of bone fragility in T2DM is key for developing effective prevention and treatment strategies.

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Area of Science:

  • Endocrinology
  • Metabolic Bone Disease
  • Diabetic Complications

Background:

  • Type 2 diabetes mellitus (T2DM) is linked to increased fracture risk, even with normal bone mineral density.
  • Diabetic complications like retinopathy, autonomic dysfunction, and nephropathy contribute to bone fragility and fall risk.
  • Systemic changes in T2DM, including inflammation and advanced glycation end-products, impact bone remodeling.

Purpose of the Study:

  • To review current literature on the pathophysiology of bone fragility and fractures in individuals with T2DM.
  • To discuss hypotheses regarding the mechanisms underlying increased fracture risk in T2DM.
  • To identify factors contributing to skeletal complications in T2DM.

Main Methods:

  • Literature review of studies on T2DM and bone health.
  • Analysis of factors influencing bone remodeling in diabetes.
  • Examination of the role of diabetic complications and systemic changes.

Main Results:

  • T2DM patients exhibit increased fracture risk despite high bone mineral density.
  • Complications (retinopathy, autonomic dysfunction, nephropathy) and altered body composition (lean/fat mass) affect skeletal health.
  • Medications (thiazolidinediones, SSRIs) and systemic factors (inflammation, AGEs, ROS) may impair bone remodeling.

Conclusions:

  • Fracture is a severe complication of T2DM with significant health consequences.
  • Identifying intrinsic and extrinsic biochemical causes of T2DM-related fractures is crucial.
  • Effective fracture prevention and treatment strategies for T2DM require a deeper understanding of underlying pathophysiology.