Journal
RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY
Volume 169, Issue 2, Pages 218-225Publisher
ELSEVIER
DOI: 10.1016/j.resp.2009.08.008
Keywords
Respiratory muscles; Diaphragm; Skeletal muscle; Neurotrophin; Neuregulin
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Funding
- NIH [AR051173]
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Many individuals who sustain a cervical spinal cord injury are unable to maintain adequate ventilation due to diaphragm muscle paralysis. These patients become dependent on mechanical ventilators and this situation is associated with ongoing problems with pulmonary clearance, infections, and lung injury leading to significant morbidity and reduced life expectancy. Therefore, functional recovery of rhythmic phrenic activity and the ability to generate expulsive forces would dramatically affect the quality of life of patients with cervical spinal cord injury. Neurotrophins are very promising in that they have been shown to play an important role in modulating functional neuroplasticity. Specifically, brain-derived neurotrophic factor (BDNF) acting via the tropomyosin-related kinase receptor type B (TrkB) has been implicated in neuroplasticity following spinal cord injury. Our central hypothesis is that functional recovery of rhythmic phrenic activity after cervical spinal cord injury is enhanced by an increase in BDNF/TrkB signaling in phrenic motoneurons, providing a novel therapeutic target for patients. (C) 2009 Elsevier B.V. All rights reserved.
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