ArticleFrontiers in cellular neuroscience2024
Dendritic morphology of motor neurons and interneurons within the compact, semicompact, and loose formations of the rat nucleus ambiguus.
Article in Frontiers in cellular neuroscience, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed.
- Inflammaging-associated mitochondrial degeneration occurs in hypoglossal motor neurons prior to tongue muscle.GeroScience · 2026Article
- The evidence for old age motor neuron death: A scoping review.Physiological reports · 2026Article
- Structural and mitochondrial dendritic degenerations in old hypoglossal motor neurons.GeroScience · 2026Article
- Integration of laryngeal and cardiorespiratory control by the dorsomedial and perifornical hypothalamus in anaesthetised rats.Frontiers in neuroscience · 2026Article
- Molecular and functional diversity of the autonomic nervous system.Nature reviews. Neuroscience · 2025Review
- Dendritic alterations precede age-related dysphagia and nucleus ambiguus motor neuron death.The Journal of physiology · 2025Article
- Electroacupuncture Intervention Improves Post-Stroke Dysphagia by Modulating NMDAR1 and GABABR1.Current neurovascular research · 2025Article
- Timeline of hypoglossal motor neuron death and intrinsic tongue muscle denervation in high-copy number SOD1Frontiers in neurology · 2024Article
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Abstract
Introduction: Motor neurons (MNs) within the nucleus ambiguus innervate the skeletal muscles of the larynx, pharynx, and oesophagus. These muscles are activated during vocalisation and swallowing and must be coordinated with several respiratory and other behaviours. Despite many studies evaluating the projections and orientation of MNs within the nucleus ambiguus, there is no quantitative information regarding the dendritic arbours of MNs residing in the compact, and semicompact/loose formations of the nucleus ambiguus.. Methods: In female and male Fischer 344 rats, we evaluated MN number using Nissl staining, and MN and non-MN dendritic morphology using Golgi-Cox impregnation Brightfield imaging of transverse Nissl sections (15 μm) were taken to stereologically assess the number of nucleus ambiguus MNs within the compact and semicompact/loose formations. Pseudo-confocal imaging of Golgi-impregnated neurons within the nucleus ambiguus (sectioned transversely at 180 μm) was traced in 3D to determine dendritic arbourisation. Results: We found a greater abundance of MNs within the compact than the semicompact/loose formations. Dendritic lengths, complexity, and convex hull surface areas were greatest in MNs of the semicompact/loose formation, with compact formation MNs being smaller. MNs from both regions were larger than non-MNs reconstructed within the nucleus ambiguus. Conclusion: Adding HBLS to the diet could be a potentially effective strategy to improve horses' health.
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