ArticleRespiratory research2014
Raphe serotonergic neurons modulate genioglossus corticomotor activity in intermittent hypoxic rats.
Article in Respiratory research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 11 citations in OpenAlex.
- Sleep, Neural Circulatory Control, and Cardiovascular Disease: A Mechanistic Review.Arteriosclerosis, thrombosis, and vascular biology · 2026Review
- Intermittent Hypobaric Hypoxia Ameliorates Autistic-Like Phenotypes in Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024Article
- Role of raphe magnus 5-HTRespiratory research · 2022Article
- How Does Chronic Intermittent Hypoxia Influence Upper Airway Stability in Rats?Nature and science of sleep · 2020Article
- Norepinephrine and serotonin are required for vagus nerve stimulation directed cortical plasticity.Experimental neurology · 2019Article
- Chronic Intermittent Hypoxia Induces the Long-Term Facilitation of Genioglossus Corticomotor Activity.Canadian respiratory journal · 2018Article
- Noradrenergic Activation of Hypoglossal Nucleus Modulates the Central Regulation of Genioglossus in Chronic Intermittent Hypoxic Rats.Frontiers in neurology · 2017Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundGenioglossus activity is greater during wakefulness but decreases to a weaker state during sleep in obstructive sleep apnea syndrome (OSAS) patients, compared to healthy subjects. Previous studies suggested that the corticomotor control of the genioglossus was modified in OSAS patients. Intermittent hypoxia (IH), the typical pathophysiological change in OSAS, can induce genioglossus facilitation. The serotonergic neurons of the raphe dorsal (DRN) and magnus nuclei (RMg) are responsive to hypoxia and play important roles in the control of the genioglossus. However, it remains unknown whether DRN and RMg serotonergic neurons are responsible for the facilitated corticomotor activity of the genioglossus during IH. This study explored the influence of IH on the corticomotor activity of the genioglossus by transcranial magnetic stimulation (TMS), and the role of DRN and RMg serotonergic neurons in this effect.
methodsRats were exposed to IH and divided into two groups. In one group, anti-SERT-SAP was microinjected into the DRN and RMg respectively to kill serotonergic neurons. In the other group, artificial cerebrospinal fluid (ACSF) was injected. Comparisons were conducted between the two groups during four weeks of IH and four weeks after IH.
resultsCompared to the corresponding ACSF-injected group, the DRN lesion group and RMg lesion group showed longer TMS latencies and lower amplitudes during IH from the 1st to the 28th day. After 28 days of IH, longer latencies and lower amplitudes were seen only in the DRN lesion group.
conclusionThese results indicate that DRN and RMg serotonergic neurons play different roles in the facilitation of genioglossus corticomotor activity induced by IH.
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