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Related Concept Videos

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 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 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...
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 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...

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Updated: Jun 12, 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

[Progress in diabetes genetics].

Pål R Njølstad1, Jens K Hertel, Oddmund Søvik

  • 1Senter for diabetesgenetikk, Barneklinikken, Haukeland universitetssykehus, 5021 Bergen, Norway. pal.njolstad@uib.no

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
|June 10, 2010
PubMed
Summary
This summary is machine-generated.

Genetic discoveries significantly impact monogenic diabetes diagnosis and treatment. While numerous genetic variants are linked to Type 2 diabetes, their clinical relevance remains unclear, underscoring the importance of genetic insights in personalized diabetes care.

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Area of Science:

  • Endocrinology
  • Human Genetics
  • Molecular Biology

Context:

  • Diabetes mellitus encompasses various forms, including Type 1, Type 2, and gestational diabetes.
  • Recent advancements in genetic research offer new insights into the underlying mechanisms of diabetes.
  • Understanding the genetic basis of diabetes is crucial for developing targeted therapies.

Purpose:

  • To provide an overview of the latest genetic discoveries pertaining to monogenic diabetes and Type 2 diabetes.
  • To highlight the diagnostic and therapeutic implications of genetic findings in monogenic diabetes.
  • To discuss the current understanding and limitations of genetic insights in Type 2 diabetes.

Summary:

  • 18 genes have been identified where a single mutation can cause diabetes, with specific genes linked to early-onset (KCNJ11, ABCC8, INS) or later-onset (HNF1A, GCK, HNF4A, HNF1B) monogenic forms.
  • Genetic testing is valuable for monogenic diabetes, enabling treatment with oral medications (e.g., for KCNJ11, ABCC8, HNF1A, HNF4A mutations) instead of insulin.
  • Genome-wide association studies have identified approximately 20 risk variants for Type 2 diabetes, but these have low predictive value and their causal mechanisms are not yet understood.

Impact:

  • Genetic findings currently have a direct impact on the diagnosis and treatment strategies for monogenic diabetes.
  • The clinical relevance of identified genetic variants for Type 2 diabetes requires further investigation.
  • Personalized medicine approaches in diabetes care can be advanced through a deeper understanding of genetic predispositions and mechanisms.