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Related Concept Videos

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...
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...
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 I Diabetes III: Clinical Manifestations01:19

Type I Diabetes III: Clinical Manifestations

Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...
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...

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Related Experiment Video

Updated: Jun 24, 2026

Electrochemiluminescence Assays for Human Islet Autoantibodies
09:15

Electrochemiluminescence Assays for Human Islet Autoantibodies

Published on: March 23, 2018

Early autonomic dysfunction in type 1 diabetes: a reversible disorder?

M Rosengård-Bärlund1, L Bernardi, J Fagerudd

  • 1Folkhälsan Research Center, Folkhälsan Institute of Genetics, Biomedicum Helsinki (C318b), University of Helsinki, Helsinki, Finland.

Diabetologia
|April 3, 2009
PubMed
Summary
This summary is machine-generated.

Early autonomic dysfunction in type 1 diabetes is largely functional. Slow deep-breathing exercises can improve baroreflex sensitivity (BRS) in these patients, suggesting potential for intervention.

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Electrochemiluminescence Assays for Human Islet Autoantibodies
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Accelerated Type 1 Diabetes Induction in Mice by Adoptive Transfer of Diabetogenic CD4+ T Cells
06:27

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

Published on: May 6, 2013

Area of Science:

  • Cardiology
  • Diabetology
  • Autonomic Neuroscience

Background:

  • Cardiac autonomic neuropathy (CAN) significantly increases morbidity and mortality in type 1 diabetes (T1D).
  • Early autonomic abnormalities in T1D are common, often preceding clinical manifestations.
  • These early dysfunctions may be functional and potentially reversible.

Purpose of the Study:

  • To investigate the functional capacity of autonomic modulation in T1D patients.
  • To assess if baroreflex sensitivity (BRS) can be improved through interventions like slow deep-breathing.
  • To differentiate between functional and organic autonomic derangements in T1D.

Main Methods:

  • Compared 116 T1D patients, 36 healthy controls, and 12 heart-transplanted patients.
  • Performed autonomic function tests and spectral analysis of heart rate and blood pressure variability.
  • Measured BRS using four methods during controlled and slow deep-breathing, in supine and standing positions.

Main Results:

  • Patients with T1D showed reduced resting BRS and spectral variables during normal breathing.
  • Slow deep-breathing significantly improved BRS in T1D patients, unlike in denervated hearts.
  • Orthostatic stress similarly affected BRS in both diabetic and control groups.

Conclusions:

  • Despite increased sympathetic activity signs in T1D, early autonomic derangements are predominantly functional.
  • Simple interventions, such as slow deep-breathing, can normalize BRS, indicating potential for therapeutic correction.
  • This highlights the importance of early, functional assessments and interventions for CAN in T1D.