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Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

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Related Experiment Video

Updated: Jun 26, 2026

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

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Published on: July 3, 2018

Islet glia, neurons, and beta cells.

Hubert Tsui¹, Shawn Winer, Yin Chan

¹Departments of Pediatrics and Immunology, The Hospital for Sick Children, Research Institute, University of Toronto, Toronto, Ontario, Canada.

Annals of the New York Academy of Sciences

|January 6, 2009

Summary

Type 1 diabetes involves autoimmune destruction of pancreatic beta cells. New research reveals sensory neurons critically initiate prediabetes by promoting islet inflammation, offering novel therapeutic targets.

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Area of Science:

Neuroimmunology
Endocrinology
Autoimmunity

Background:

Type 1 diabetes (T1D) results from autoimmune destruction of pancreatic beta cells.
The precise early triggers and pancreas-specific nature of T1D autoimmunity remain incompletely understood.
Previous understanding focused on beta cell and immune interactions, overlooking other factors.

Purpose of the Study:

To investigate the role of neuronal elements in Type 1 diabetes pathogenesis.
To explore the contribution of sensory afferent neurons to prediabetes initiation and islet inflammation.
To elucidate the neuro-immuno-endocrinological mechanisms underlying T1D development.

Main Methods:

Investigated autoimmune islet destruction beyond beta cells, identifying targeting of peri-islet glia.
Examined the role of sensory afferent neurons in prediabetes.
Analyzed the impact of neuronal factors on glucose homeostasis and beta cell stress.

Main Results:

Autoimmune islet destruction involves not only beta cells but also peri-islet glia.
Sensory afferent neurons are critical in initiating prediabetes.
These neurons promote islet inflammation, alter glucose homeostasis, and induce beta cell stress.

Conclusions:

Type 1 diabetes pathogenesis involves a neuro-immuno-endocrinological triad.
Local neuropeptide deficiency contributes to diabetic inflammation.
This discovery presents a novel concept for T1D pathogenesis with potential therapeutic implications.