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Updated: May 20, 2026

Analyzing the Functions of Mast Cells In Vivo Using 'Mast Cell Knock-in' Mice
Published on: May 27, 2015
The mast cell-nerve functional unit: a key component of physiologic and pathophysiologic responses
Paul Forsythe1, John Bienenstock
1The Brain-Body Institute, St. Joseph's Healthcare, Department of Medicine, McMaster University, Hamilton, Ont., Canada. forsytp@mcmaster.ca
Mast cells bridge the nervous and immune systems, with nerve interactions regulating physiology and disease. These mast cell-nerve connections are vital across many tissues, including the brain.
Area of Science:
- Neuroimmunology
- Cellular Biology
- Physiology
Background:
- Mast cells are crucial in bridging the nervous and immune systems.
- Mast cell-nerve interactions are fundamental to understanding bidirectional communication between these systems.
- These interactions are conserved across mammalian species, including humans, and influence homeostasis and disease.
Purpose of the Study:
- To review the influence of cholinergic and sensory neurons on mast cells.
- To highlight the significance of mast cell-nerve interactions in specific tissues, such as the brain.
Main Methods:
- Review of existing literature on mast cell-nerve interactions.
- Analysis of morphological and functional associations between mast cells and nerves.
- Discussion of neuro-immune system communication.
Main Results:
- Mast cells exhibit a unique ability to connect the nervous and immune systems.
- Morphological and functional associations between mast cells and nerves are widespread in mammals.
- These interactions play roles in physiological regulation and disease pathogenesis.
Conclusions:
- Mast cell-nerve interactions are critical for bidirectional communication between the nervous and immune systems.
- Understanding these interactions is key to unraveling mechanisms of homeostasis and disease.
- Specific tissue sites, including the brain, demonstrate the importance of these neuro-immune connections.
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