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Related Concept Videos

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.
Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis01:25

Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis

Type 2 diabetes mellitus develops gradually and is often asymptomatic in early stages.Clinical ManifestationsWhen symptoms appear, they include fatigue, blurred vision, pruritus, delayed wound healing, and recurrent infections, particularly candidal infections. Peripheral neuropathy may present as numbness or tingling in the extremities. Classic hyperglycemia symptoms—polyuria, polydipsia, and polyphagia—are less common. Most patients are overweight and frequently have associated hypertension...
Diabetes Mellitus: Type 2 and Gestational01:22

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...
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...
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...

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Related Experiment Video

Updated: Jul 10, 2026

Generation of High Quality Chromatin Immunoprecipitation DNA Template for High-throughput Sequencing (ChIP-seq)
09:52

Generation of High Quality Chromatin Immunoprecipitation DNA Template for High-throughput Sequencing (ChIP-seq)

Published on: April 19, 2013

Identifying susceptibility variants for type 2 diabetes.

Eleftheria Zeggini1, Mark I McCarthy

  • 1Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, UK.

Methods in Molecular Biology (Clifton, N.J.)
|November 7, 2007
PubMed
Summary
This summary is machine-generated.

Identifying genetic variants for type 2 diabetes (T2D) is challenging due to complex gene-environment interactions. Recent advances in association studies are improving the discovery of T2D susceptibility genes.

Related Experiment Videos

Last Updated: Jul 10, 2026

Generation of High Quality Chromatin Immunoprecipitation DNA Template for High-throughput Sequencing (ChIP-seq)
09:52

Generation of High Quality Chromatin Immunoprecipitation DNA Template for High-throughput Sequencing (ChIP-seq)

Published on: April 19, 2013

Area of Science:

  • Genetics
  • Endocrinology
  • Epidemiology

Background:

  • Type 2 Diabetes (T2D) etiology is complex, influenced by multiple genetic variants and environmental factors.
  • Individual susceptibility to T2D arises from the interplay of modest genetic effects and various exposures.
  • Understanding T2D's genetic underpinnings is crucial for developing effective prevention and treatment strategies.

Purpose of the Study:

  • To review and discuss the methodologies employed in identifying etiological variants for type 2 diabetes.
  • To highlight the challenges and recent advancements in T2D genetic association studies.
  • To emphasize the importance of robust study designs and analyses for reliable genetic insights.

Main Methods:

  • Review of various genetic association study designs and analytical approaches.
  • Focus on methods for identifying etiological variants, including linkage scans and candidate gene studies.
  • Emphasis on strategies for improving statistical power and ensuring reproducible findings.

Main Results:

  • Historically, identifying reproducible genetic associations for T2D has been difficult.
  • Recent studies, with improved power and analysis, have yielded robustly replicated associations.
  • New strategies, including genome-wide association scans, are emerging for large-scale variant identification.

Conclusions:

  • Despite challenges, progress is being made in identifying genetic susceptibility variants for T2D.
  • Improved study designs and analytical rigor are key to obtaining reliable genetic insights.
  • Caution in the design, analysis, and interpretation of genetic studies remains essential for advancing T2D research.