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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...

Type II Diabetes I: Introduction

Type II Diabetes I: Introduction

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...

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...

Type I Diabetes I: Introduction

Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...

Diabetes Mellitus: Type 2 and Gestational

Diabetes Mellitus: Type 2 and Gestational

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 as an inflammatory disease.

Marc Y Donath¹, Steven E Shoelson

¹Clinic of Endocrinology, Diabetes and Metabolism, University Hospital Basel, CH-4031 Basel, Switzerland. MDonath@uhbs.ch

Nature Reviews. Immunology

|January 15, 2011

Summary

Immune system alterations in obesity and type 2 diabetes (T2D) suggest inflammation drives disease progression. Immunomodulatory treatments may lower blood glucose and reduce T2D complications.

Area of Science:

Immunology
Endocrinology
Metabolic Diseases

Background:

Obesity and type 2 diabetes (T2D) are linked to significant alterations in immune system components.
Key affected sites include adipose tissue, liver, pancreatic islets, vasculature, and circulating leukocytes.

Purpose of the Study:

To explore the role of inflammation in the pathogenesis of type 2 diabetes.
To evaluate the potential of immunomodulatory strategies for T2D treatment.

Main Methods:

Analysis of immunological changes in obesity and T2D, including cytokine/chemokine levels and leukocyte populations.
Review of preliminary clinical trial data for salicylates and interleukin-1 antagonists.

Main Results:

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Immune dysregulation, characterized by altered cytokine profiles, leukocyte activity, apoptosis, and fibrosis, is evident in T2D.

Clinical trials suggest that targeting inflammation can impact T2D management.

Conclusions:

Inflammation is implicated as a key factor in the development of type 2 diabetes.
Immunomodulatory therapies offer a promising avenue for simultaneously managing hyperglycemia and T2D-associated complications.