Related Experiment Video
Updated: Jun 1, 2026
14:25
Quantification of Reactive Oxygen Species Using 2′,7′-Dichlorofluorescein Diacetate Probe and Flow-Cytometry in Müller Glial Cells
Published on: May 13, 2022
Oxidative stress and redox modulation potential in type 1 diabetes
Meghan M Delmastro1, Jon D Piganelli
1Diabetes Institute, Division of Immunogenetics, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA.
Clinical & Developmental Immunology
|June 8, 2011
Summary
Reactive oxygen species (ROS) play a critical role in type 1 diabetes (T1D) pathogenesis. Understanding oxidative stress and redox modulation is key to addressing T1D autoimmunity.
Area of Science:
- Immunology
- Metabolic diseases
- Oxidative stress research
Background:
- Cellular metabolism relies on tightly regulated redox reactions.
- Imbalances in reactive oxygen species (ROS) and antioxidants lead to oxidative stress and disease.
- In type 1 diabetes (T1D), autoimmune destruction of pancreatic beta cells involves macrophages and dendritic cells (DCs).
Purpose of the Study:
- To discuss the pivotal role of ROS in initiating and perpetuating islet cell autoimmunity in T1D.
- To explore the potential of redox modulation as a therapeutic strategy for T1D.
Main Methods:
- Review of existing literature on ROS, oxidative stress, and T1D.
- Analysis of the mechanisms by which ROS activate immune cells (macrophages, DCs, T cells).
- Discussion of redox-dependent transcription factors like NF-κB in immune activation.
Main Results:
- ROS from resident phagocytes and receptor-ligand interactions activate macrophages/DCs.
- Activated macrophages/DCs present beta-cell antigens, triggering T-cell responses in pancreatic lymph nodes.
- ROS generation is crucial for both innate and adaptive immune responses in T1D autoimmunity.
Conclusions:
- Oxidative stress and ROS generation are central to the autoimmune process in T1D.
- Targeting redox pathways offers a potential therapeutic avenue for T1D treatment.
Related Concept Videos
01:24Type 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.
01:26Type 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...
01:26Type 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...
01:12Type 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...
01:22Diabetes 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 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...
01:19Psychoneuroimmunology: Diabetes and Cancer
Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...