{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T20:26:02Z","timestamp":1792614362493,"version":"4.5.0"},"reference-count":67,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2009,2,13]],"date-time":"2009-02-13T00:00:00Z","timestamp":1234483200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Journal of Physiology"],"published-print":{"date-parts":[[2009,2,15]]},"abstract":"\n Interaction between central (brainstem) and peripheral (carotid body) respiratory chemosensitivity is vital to protect blood gases against potentially deleterious fluctuations, especially during sleep. Previously, using an\n in situ<\/jats:italic>\n arterially perfused, vagotomized, decerebrate preparation in which brainstem and peripheral chemoreceptors are perfused separately (i.e. dual perfused preparation; DPP), we observed that the phrenic response to specific carotid body hypoxia was larger when the brainstem was held at 25 Torr\n \n P<\/jats:italic>\n \n <\/jats:styled-content>\n compared to 50 Torr\n \n P<\/jats:italic>\n \n <\/jats:styled-content>\n . This suggests a negative (i.e. hypo\u2010additive) interaction between chemoreceptors. The current study was designed to (a) determine whether this observation could be generalized to all carotid body stimuli, and (b) exclude the possibility that the hypo\u2010additive response was the simple consequence of ventilatory saturation at high brainstem\n \n P<\/jats:italic>\n \n <\/jats:styled-content>\n . Specifically, we tested how steady\u2010state brainstem\n \n P<\/jats:italic>\n \n <\/jats:styled-content>\n modulates peripheral chemoreflex magnitude in response to carotid body\n \n P<\/jats:italic>\n \n <\/jats:styled-content>\n and\n \n P<\/jats:italic>\n \n <\/jats:styled-content>\n perturbations, both above and below eupnoeic levels. We found that the peripheral chemoreflex was more responsive the lower the brainstem\n \n P<\/jats:italic>\n \n <\/jats:styled-content>\n regardless of whether the peripheral chemoreceptors received stimuli which increased or decreased activation. These findings demonstrate a negative interaction between brainstem and peripheral chemosensitivity in the rat in the absence of ventilatory saturation. We suggest that a negative interaction in humans may contribute to increased controller gain associated with sleep\u2010related breathing disorders and propose that the assumption of simple addition between chemoreceptor inputs used in current models of the respiratory control system be reconsidered.\n <\/jats:p>","DOI":"10.1113\/jphysiol.2008.160689","type":"journal-article","created":{"date-parts":[[2008,12,22]],"date-time":"2008-12-22T20:34:07Z","timestamp":1229978047000},"page":"883-896","source":"Crossref","is-referenced-by-count":69,"title":["A negative interaction between brainstem and peripheral respiratory chemoreceptors modulates peripheral chemoreflex magnitude"],"prefix":"10.1113","volume":"587","author":[{"given":"Trevor A.","family":"Day","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard J. 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