Journal
RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY
Volume 256, Issue -, Pages 4-14Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.resp.2017.11.008
Keywords
Pharmacology; Hypoxia episodes; Signaling mechanisms; Breathing
Categories
Funding
- Craig H. Neilsen Foundation [313369]
- NIH [1R01NS080180-01A1, 2R01HD052682-06A1, HL69064, HL111598]
- Canadian Institutes of Health Research (CIHR)
- [F32 NS095620-01]
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Hypoxia elicits complex cell signaling mechanisms in the respiratory control system that can produce long-lasting changes in respiratory motor output. In this article, we review experimental approaches used to elucidate signaling pathways associated with hypoxia, and summarize current hypotheses regarding the intracellular signaling pathways evoked by intermittent exposure to hypoxia. We review data showing that pharmacological treatments can enhance neuroplastic responses to hypoxia. Original data are included to show that pharmacological modulation of alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) function can reveal a respiratory neuroplastic response to a single, brief hypoxic exposure in anesthetized mice. Coupling pharmacologic treatments with therapeutic hypoxia paradigms may have rehabilitative value following neurologic injury or during neuromuscular disease. Depending on prevailing conditions, pharmacologic treatments can enable hypoxia-induced expression of neuroplasticity and increased respiratory motor output, or potentially could synergistically interact with hypoxia to more robustly increase motor output.
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