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Related Concept Videos

Autophagy01:27

Autophagy

Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
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 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.
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...
Diabetic Nephropathy01:28

Diabetic Nephropathy

Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration occur due to afferent arteriolar...
Cellular Injury V: Apoptosis and Autophagy01:22

Cellular Injury V: Apoptosis and Autophagy

Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...

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Related Experiment Video

Updated: Jul 14, 2026

Complementary Approaches to Interrogate Mitophagy Flux in Pancreatic β-Cells
07:04

Complementary Approaches to Interrogate Mitophagy Flux in Pancreatic β-Cells

Published on: September 15, 2023

Macroautophagy: protector in the diabetes drama?

Alfred J Meijer1, Patrice Codogno

  • 1Department of Medical Biochemistry, Academic Medical Center, Amsterdam, The Netherlands. a.j.meijer@amc.uva.nl

Autophagy
|May 31, 2007
PubMed
Summary

Autophagy, a cellular recycling process, is expected to increase during insulin resistance. This may help cells clear damaged components and prevent death.

Area of Science:

  • Cellular Biology
  • Metabolism
  • Physiology

Background:

  • Macroautophagy (autophagy) and protein synthesis share the insulin-amino acid-mTOR signaling pathway.
  • Insulin resistance is a metabolic condition impacting cellular signaling.

Purpose of the Study:

  • To explore the potential link between insulin resistance and increased autophagy.
  • To discuss the implications of autophagy in preventing cell death during insulin resistance.

Main Methods:

  • Literature review and theoretical discussion.
  • Analysis of shared regulatory pathways.

Main Results:

  • Autophagy regulation is closely tied to the mTOR pathway, also controlling protein synthesis.

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Visualization of Endogenous Mitophagy Complexes In Situ in Human Pancreatic Beta Cells Utilizing Proximity Ligation Assay
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Visualization of Endogenous Mitophagy Complexes In Situ in Human Pancreatic Beta Cells Utilizing Proximity Ligation Assay

Published on: May 2, 2019

Related Experiment Videos

Last Updated: Jul 14, 2026

Complementary Approaches to Interrogate Mitophagy Flux in Pancreatic β-Cells
07:04

Complementary Approaches to Interrogate Mitophagy Flux in Pancreatic β-Cells

Published on: September 15, 2023

Visualization of Endogenous Mitophagy Complexes In Situ in Human Pancreatic Beta Cells Utilizing Proximity Ligation Assay
08:40

Visualization of Endogenous Mitophagy Complexes In Situ in Human Pancreatic Beta Cells Utilizing Proximity Ligation Assay

Published on: May 2, 2019

  • A hypothesized increase in autophagy is proposed in the context of insulin resistance.
  • Conclusions:

    • The study posits that elevated autophagy may serve as a protective cellular mechanism.
    • This mechanism could involve the clearance of damaged mitochondria and cellular structures to prevent apoptosis.