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Related Concept Videos

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 I Diabetes I: Introduction01:12

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: Overview and Type I Subtype01:22

Diabetes Mellitus: Overview and Type I Subtype

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.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
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 II Diabetes I: Introduction01:26

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: 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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Accelerated Type 1 Diabetes Induction in Mice by Adoptive Transfer of Diabetogenic CD4+ T Cells
06:27

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Published on: May 6, 2013

Inflammation and type one diabetes.

David Bending1, Paola Zaccone, Anne Cooke

  • 1Rheumatology Unit, University College London Institute of Child Health, London WC1N 1EH, UK. d.bending@ucl.ac.uk

International Immunology
|March 27, 2012
PubMed
Summary
This summary is machine-generated.

Type one diabetes (T1D) involves T-cell destruction of insulin-producing beta cells. Understanding the balance between immune regulation and inflammation is key for developing new therapies and beta cell regeneration strategies.

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Methods to Assess Beta Cell Death Mediated by Cytotoxic T Lymphocytes
12:12

Methods to Assess Beta Cell Death Mediated by Cytotoxic T Lymphocytes

Published on: June 16, 2011

Area of Science:

  • Immunology
  • Endocrinology
  • Autoimmunity

Background:

  • Type one diabetes (T1D) is a T cell-mediated autoimmune disease characterized by the destruction of pancreatic beta cells.
  • Disease development results from a complex interplay of genetic predisposition and environmental triggers.
  • The pathological process is influenced by multiple interconnected factors.

Purpose of the Study:

  • To analyze the mechanisms driving the initiation and progression of the autoimmune response in T1D.
  • To discuss the role of T-helper (Th) subsets, specifically Th1 and Th17 cytokines, in T1D pathogenesis.
  • To propose that beta-cell response to stress and inflammation critically determines disease outcome.

Main Methods:

  • Review of existing literature on T1D pathogenesis.
  • Analysis of T cell-mediated autoimmune mechanisms.
  • Synthesis of arguments regarding the role of beta-cell response and immune balance.

Main Results:

  • The autoimmune response involves a delicate balance between regulation and inflammation at the site of islet infiltration.
  • Beta-cell response to stress and inflammation is identified as a critical determinant of disease outcome.
  • Current therapeutic strategies require induction of T-cell tolerance and management of inflammatory mediators.

Conclusions:

  • Effective T1D intervention necessitates promoting immune regulation and scavenging inflammatory mediators to facilitate beta-cell repair.
  • Addressing beta-cell regeneration is crucial, as clinical diagnosis often occurs late in the autoimmune process.
  • A collaborative effort between stem cell biologists and immunologists is required for optimal therapeutic strategies.