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Related Concept Videos

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are co-secreted in...
Insulin Secretory Vesicles01:05

Insulin Secretory Vesicles

Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
Tissue Renewal without Stem Cells01:23

Tissue Renewal without Stem Cells

After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...

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Related Experiment Video

Updated: Jul 5, 2026

A High-content In Vitro Pancreatic Islet &#946;-cell Replication Discovery Platform
09:35

A High-content In Vitro Pancreatic Islet β-cell Replication Discovery Platform

Published on: July 16, 2016

Islet dynamics: a glimpse at beta cell proliferation.

Pinar Yesil1, Eckhard Lammert

  • 1Max Planck Institute of Molecular Cell Biology and Genetics (MPI-CBG), Dresden, Germany.

Histology and Histopathology
|April 26, 2008
PubMed
Summary
This summary is machine-generated.

Understanding beta cell renewal is key to treating diabetes. This review explores beta cell origins, proliferation, and signaling, offering insights into expanding beta cell mass for therapeutic benefits.

More Related Videos

In situ Quantification of Pancreatic Beta-cell Mass in Mice
09:50

In situ Quantification of Pancreatic Beta-cell Mass in Mice

Published on: June 7, 2010

Related Experiment Videos

Last Updated: Jul 5, 2026

A High-content In Vitro Pancreatic Islet &#946;-cell Replication Discovery Platform
09:35

A High-content In Vitro Pancreatic Islet β-cell Replication Discovery Platform

Published on: July 16, 2016

In situ Quantification of Pancreatic Beta-cell Mass in Mice
09:50

In situ Quantification of Pancreatic Beta-cell Mass in Mice

Published on: June 7, 2010

Area of Science:

  • Endocrinology
  • Cell Biology
  • Metabolic Disorders

Background:

  • Pancreatic beta cells are crucial for insulin secretion and metabolic regulation.
  • Beta cell dysfunction or death causes hyperglycemia, leading to Diabetes Mellitus.
  • Therapeutic strategies for diabetes focus on understanding beta cell proliferation and function.

Purpose of the Study:

  • To review current knowledge on beta cell renewal mechanisms.
  • To identify cellular origins of new beta cells in adults.
  • To explore the regulation of beta cell proliferation and associated signaling pathways.

Main Methods:

  • Comprehensive literature review of beta cell renewal research.
  • Analysis of studies on beta cell origins, proliferation, and cell cycle control.
  • Discussion of potential therapeutic applications derived from beta cell regeneration.

Main Results:

  • Recent findings indicate beta cell proliferation contributes significantly to adult beta cell mass in mice.
  • Key beta cell mitogens and cell cycle regulators have been identified.
  • The cellular origins of new adult beta cells remain an active area of research.

Conclusions:

  • Manipulating beta cell proliferation offers novel therapeutic approaches for diabetes.
  • Expanding beta cell mass can be pursued through in vitro generation or in vivo regeneration.
  • These regenerative strategies hold significant promise for improving outcomes for diabetic patients.