Targeting Spinal Interneurons for Respiratory Recovery After Spinal Cord Injury

TL;DR

This review explores how targeting spinal interneurons could help restore breathing after spinal cord injury.

Contribution

The paper reviews SpIN circuits and emerging therapies targeting them for respiratory recovery after SCI.

Findings

Spinal interneurons are crucial for modulating breathing and adapting to injury.

Breathing deficits after SCI are a major cause of morbidity and mortality.

Emerging approaches aim to use SpINs as therapeutic targets for recovery.

Abstract

Spinal interneurons (SpINs) are pivotal to the function of neural circuits, orchestrating motor, sensory, and autonomic functions in the healthy, intact central nervous system. These interneurons (INs) are heterogeneous, with diverse types contributing to various neural systems, including those that control respiratory function. Research in the last few decades has highlighted the complex involvement of SpINs in modulating motor control. SpINs also partake in motor plasticity by aiding in adapting and rewiring neural circuits in response to injury or disease. This plasticity is crucial in the context of spinal cord injury (SCI), where damage often leads to severe and long-term breathing deficits. Such deficits are a leading cause of morbidity and mortality in individuals with SCI, emphasizing the need for effective interventions. This review will focus on SpIN circuits involved in the modulation of breathing and explore current and emerging approaches that leverage SpINs as therapeutic targets to promote respiratory recovery following SCI.

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