Journal
RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY
Volume 188, Issue 3, Pages 289-300Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.resp.2013.04.010
Keywords
Progressive augmentation; Long-term facilitation; Circadian rhythms; Upper airway muscles; Intermittent hypoxia
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Funding
- Department of Veterans Affairs
- National Heart, Lung, and Blood Institute [R01-HL-085537]
- Veterans Health Administration
- Office of Research and Development
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This review examines the role that respiratory plasticity has in the maintenance of breathing stability during sleep in individuals with sleep apnea. The initial portion of the review considers the manner in which repetitive breathing events may be initiated in individuals with sleep apnea. Thereafter, the role that two forms of respiratory plasticity, progressive augmentation of the hypoxic ventilatory response and long-term facilitation of upper airway and respiratory muscle activity, might have in modifying breathing events in humans is examined. In this context, present knowledge regarding the initiation of respiratory plasticity in humans during wakefulness and sleep is addressed. Also, published findings which reveal that exposure to intermittent hypoxia promotes breathing instability, at least in part, because of progressive augmentation of the hypoxic ventilatory response and the absence of long-term facilitation, are considered. Next, future directions are presented and are focused on the manner in which forms of plasticity that stabilize breathing might be promoted while diminishing destabilizing forms, concurrently. These future directions will consider the potential role of circadian rhythms in the promotion of respiratory plasticity and the role of respiratory plasticity in enhancing established treatments for sleep apnea. Published by Elsevier B.V.
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