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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...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).

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Related Experiment Video

Updated: May 19, 2026

Imaging Calcium Dynamics in Subpopulations of Mouse Pancreatic Islet Cells
08:03

Imaging Calcium Dynamics in Subpopulations of Mouse Pancreatic Islet Cells

Published on: November 26, 2019

Neurofunctional imaging of β-cell dynamics.

P E Harris1, R L Leibel

  • 1Division of Endocrinology, Department of Medicine, The Naomi Berrie Diabetes Center and Columbia University College of Physicians and Surgeons, New York, NY, USA. peh1@columbia.edu

Diabetes, Obesity & Metabolism
|August 30, 2012
PubMed
Summary
This summary is machine-generated.

Islet cells use neurotransmitter circuits for communication to regulate insulin secretion. These circuits, similar to those in the brain, could be monitored using molecular imaging for real-time beta-cell function analysis.

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Last Updated: May 19, 2026

Imaging Calcium Dynamics in Subpopulations of Mouse Pancreatic Islet Cells
08:03

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Published on: November 26, 2019

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Published on: April 13, 2021

Analysis of Beta-cell Function Using Single-cell Resolution Calcium Imaging in Zebrafish Islets
08:50

Analysis of Beta-cell Function Using Single-cell Resolution Calcium Imaging in Zebrafish Islets

Published on: July 3, 2018

Area of Science:

  • Endocrinology
  • Neuroscience
  • Cell Biology

Background:

  • Islet cells, specifically beta-cells, are crucial for regulating blood glucose levels through insulin secretion.
  • Communication between beta-cells is essential for coordinated insulin release.
  • Autocrine and paracrine signaling pathways are known to influence beta-cell function.

Purpose of the Study:

  • To elucidate the role of classical neurotransmitter circuits in intra-islet communication.
  • To explore the potential of molecular imaging techniques for assessing beta-cell function dynamics.

Main Methods:

  • Review and synthesis of existing literature on islet cell signaling and neurotransmitter systems.
  • Comparison of intra-islet neurotransmitter circuits with those in the central nervous system.
  • Discussion of the applicability of molecular imaging technologies.

Main Results:

  • Islet cells utilize autocrine and paracrine neurotransmitter circuits for intercellular communication.
  • These circuits involve classical neurotransmitters, receptors, and transporters, mirroring CNS pathways.
  • Molecular imaging techniques offer a potential avenue for real-time monitoring of beta-cell function.

Conclusions:

  • Neurotransmitter circuits play a significant role in regulating glucose-stimulated insulin secretion.
  • The parallels between islet and CNS neurotransmitter systems suggest shared regulatory mechanisms.
  • Molecular imaging holds promise for advancing the study of beta-cell dynamics and function.