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Role of the Kölliker-Fuse/parabrachial complex in the generation of postinspiratory vagal and sympathetic nerve activities and their recruitment by hypoxemic stimuli in the rat.
J Neurophysiol
November 2024
Macquarie Medical School, Faculty of Medicine, Health and Human SciencesMacquarie University, Sydney, Australia.
Article Synopsis
- The study investigates how the Kölliker-Fuse/Parabrachial nuclei (KF-PBN) in rats regulates post-inspiratory (post-I) activities that affect respiratory efficiency during normal conditions and acute hypoxemia.
- When the KF-PBN was inhibited, researchers observed changes such as reduced phrenic nerve activity and abolished post-I vagal responses, indicating its role in managing these respiratory outputs.
- The findings suggest the KF-PBN is crucial for modulating post-I vagal activity but only partially involved in sympathetic nerve activity, implying multiple neural pathways are at play in respiratory-sympathetic coordination during stress.