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Ion channels in respiratory rhythm generation and sensorimotor integration
Carlos Aparecido da Silva Junior1, Maria Cristina D Picardo2, Christopher A Del Negro2
1Department of Applied Science, School of Computing, Data Sciences & Physics, William & Mary, Williamsburg, VA 23185, USA; Department of Biology, University of North Carolina at Greensboro, Greensboro, NC 2712, USA.
Neuron
|August 2, 2025
Summary
Ion channels in the brainstem control breathing by regulating neural excitability and sensory feedback. Specific sodium, potassium, and mixed cation channels are crucial for normal breathing patterns and responses.
Area of Science:
- Neuroscience
- Physiology
- Molecular Biology
Background:
- Breathing relies on rhythmic neural activity in the brainstem.
- Understanding specific ion channels is key to deciphering breathing control mechanisms.
- Ion channels regulate neuronal excitability, burst generation, and sensory transduction.
Purpose of the Study:
- To elucidate the roles of specific ion channels in breathing control.
- To explain how ion channels contribute to rhythmogenesis and sensorimotor integration.
- To link ion channel function to normal breathing and sigh breaths.
Main Methods:
- Characterization of ion channel function in brainstem nuclei.
- Analysis of sodium, potassium, and mixed cation channels involved in neuronal excitability.
- Investigation of sensory transduction pathways in respiratory control circuits.
Main Results:
- Sodium leak channel non-selective (NALCN), NaV1.6, and TRP melastatin 4 (TRPM4) channels regulate excitability and burst generation.
- Two-pore domain acid-sensitive potassium (TASK)-2, PIEZO, and TRP channels encode sensory feedback.
- These ion channels are essential for normal breathing and sigh breaths.
Conclusions:
- Specific ion channels play critical roles in mammalian breathing.
- Understanding ion channel function provides insights into respiratory rhythmogenesis and sensorimotor integration.
- Breathing control can be analyzed at multiple levels, from ion channels to genes.
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