Neuroprotective and Neurorestorative Processes after Spinal Cord Injury: The Case of the Bulbospinal Respiratory Neurons

High cervical spinal cord injuries interrupt the bulbospinal respiratory pathways projecting to the cervical phrenic motoneurons resulting in important respiratory defects. In the case of a lateralized injury that maintains the respiratory drive on the opposite side, a partial recovery of the ipsila...

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Main Authors: Anne Kastner, Valéry Matarazzo
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Neural Plasticity
Online Access:http://dx.doi.org/10.1155/2016/7692602
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author Anne Kastner
Valéry Matarazzo
author_facet Anne Kastner
Valéry Matarazzo
author_sort Anne Kastner
collection DOAJ
description High cervical spinal cord injuries interrupt the bulbospinal respiratory pathways projecting to the cervical phrenic motoneurons resulting in important respiratory defects. In the case of a lateralized injury that maintains the respiratory drive on the opposite side, a partial recovery of the ipsilateral respiratory function occurs spontaneously over time, as observed in animal models. The rodent respiratory system is therefore a relevant model to investigate the neuroplastic and neuroprotective mechanisms that will trigger such phrenic motoneurons reactivation by supraspinal pathways. Since part of this recovery is dependent on the damaged side of the spinal cord, the present review highlights our current understanding of the anatomical neuroplasticity processes that are developed by the surviving damaged bulbospinal neurons, notably axonal sprouting and rerouting. Such anatomical neuroplasticity relies also on coordinated molecular mechanisms at the level of the axotomized bulbospinal neurons that will promote both neuroprotection and axon growth.
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spelling doaj-art-a02809fc124042109586b0148061b73f2025-02-03T06:42:08ZengWileyNeural Plasticity2090-59041687-54432016-01-01201610.1155/2016/76926027692602Neuroprotective and Neurorestorative Processes after Spinal Cord Injury: The Case of the Bulbospinal Respiratory NeuronsAnne Kastner0Valéry Matarazzo1PPSN EA 4674, Aix-Marseille Université, 13013 Marseille, FranceINMED UMR 901, INSERM, Aix-Marseille Université, 13273 Marseille, FranceHigh cervical spinal cord injuries interrupt the bulbospinal respiratory pathways projecting to the cervical phrenic motoneurons resulting in important respiratory defects. In the case of a lateralized injury that maintains the respiratory drive on the opposite side, a partial recovery of the ipsilateral respiratory function occurs spontaneously over time, as observed in animal models. The rodent respiratory system is therefore a relevant model to investigate the neuroplastic and neuroprotective mechanisms that will trigger such phrenic motoneurons reactivation by supraspinal pathways. Since part of this recovery is dependent on the damaged side of the spinal cord, the present review highlights our current understanding of the anatomical neuroplasticity processes that are developed by the surviving damaged bulbospinal neurons, notably axonal sprouting and rerouting. Such anatomical neuroplasticity relies also on coordinated molecular mechanisms at the level of the axotomized bulbospinal neurons that will promote both neuroprotection and axon growth.http://dx.doi.org/10.1155/2016/7692602
spellingShingle Anne Kastner
Valéry Matarazzo
Neuroprotective and Neurorestorative Processes after Spinal Cord Injury: The Case of the Bulbospinal Respiratory Neurons
Neural Plasticity
title Neuroprotective and Neurorestorative Processes after Spinal Cord Injury: The Case of the Bulbospinal Respiratory Neurons
title_full Neuroprotective and Neurorestorative Processes after Spinal Cord Injury: The Case of the Bulbospinal Respiratory Neurons
title_fullStr Neuroprotective and Neurorestorative Processes after Spinal Cord Injury: The Case of the Bulbospinal Respiratory Neurons
title_full_unstemmed Neuroprotective and Neurorestorative Processes after Spinal Cord Injury: The Case of the Bulbospinal Respiratory Neurons
title_short Neuroprotective and Neurorestorative Processes after Spinal Cord Injury: The Case of the Bulbospinal Respiratory Neurons
title_sort neuroprotective and neurorestorative processes after spinal cord injury the case of the bulbospinal respiratory neurons
url http://dx.doi.org/10.1155/2016/7692602
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AT valerymatarazzo neuroprotectiveandneurorestorativeprocessesafterspinalcordinjurythecaseofthebulbospinalrespiratoryneurons