ArticleFrontiers in neuroscience2026
Integration of laryngeal and cardiorespiratory control by the dorsomedial and perifornical hypothalamus in anaesthetised rats.
Article in Frontiers in neuroscience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The dorsomedial hypothalamic nucleus and perifornical area (DMH/PeF), historically identified as the hypothalamic defence area, plays a key role in orchestrating autonomic and respiratory adjustments during threat-related states. To investigate how activation of this region affects upper-airway and respiratory motor circuits, we examined its anatomical and functional interactions with laryngeal-related medullary nuclei using combined immunohistochemical mapping and physiological recordings in spontaneously breathing anaesthetised rats. Neuronal activation was assessed using c-Fos immunohistochemistry (c-Fos-ir) combined with ChAT and FoxP2 labelling to identify motoneurons and non-motoneuronal populations across the compact, semicompact and loose formations of the nucleus ambiguus (nA), as well as within the nucleus retroambiguus (nRA), during DMH/PeF electrical stimulation. Hypothalamic activation produced a clear subdivision-specific recruitment in the nA, with significant ipsilateral increases in c-Fos-ir within the semicompact (motoneurons,
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