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Respir Physiol Neurobiol. 2013 Oct 1;189(1):10-21. doi: 10.1016/j.resp.2013.06.003. Epub 2013 Jun 14.

Contributions of the Kölliker-Fuse nucleus to coordination of breathing and swallowing.

Author information

1
Medical College of Wisconsin, Department of Physiology, Milwaukee, WI, United States. Electronic address: jbonis@mcw.edu.

Abstract

Herein we compare the effects of perturbations in the Kölliker-Fuse nucleus (KFN) and the lateral (LPBN) and medial (MPBN) parabrachial nuclei on the coordination of breathing and swallowing. Cannula was chronically implanted in goats through which ibotenic acid (IA) was injected while awake. Swallows in late expiration (E) always reset while swallows in early inspiration (I) never reset the respiratory rhythm. Before cannula implantation, all other E and I swallows did not reset the respiratory rhythm, and had small effects on E and I duration and tidal volume (VT). However, after cannula implantation in the MPBN and KFN, E and I swallows reset the respiratory rhythm and increased the effects on I and E duration and VT. Subsequent injection of IA into the KFN eliminated the respiratory phase resetting of swallows but exacerbated the effects on I and E duration and VT. We conclude that the KFN and to a lesser extent the MPBN contribute to coordination of breathing and swallowing.

PMID:
23774145
PMCID:
PMC4338573
DOI:
10.1016/j.resp.2013.06.003
[Indexed for MEDLINE]
Free PMC Article

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