An efficient neural network of cooperating serotonergic and noradrenergic neurons in modulating sudden unexpected death in epilepsy
Qing Xu, XiaoXia Xu, LeYuan Gu, YaXuan Wu, Yue Yang, ZhuoYue Zhang, ZiWen Zhang, XuanYi Di, XiTing Lian, Qian Yu, YuLing Wang, HaiXiang Ma, WeiHui Shao, Lu Liu, JiaXuan Gu, Fei Tong, HongHai Zhang
TL;DR
This study shows that serotonin and noradrenaline work together in a brain network to reduce sudden death in epilepsy patients.
Contribution
The study is the first to demonstrate a synergistic effect of serotonergic and noradrenergic systems in reducing SUDEP in mice.
Findings
Elevating serotonin and noradrenaline levels significantly reduced SUDEP incidence in DBA/1 mice.
Venlafaxine enhances the cooperative regulation of serotonin and noradrenaline in protecting against SUDEP.
The DR-LC-PBC neural circuit mediates protective effects through 5-HT2A and NE-α1 receptors in the PBC.
Abstract
Sudden unexpected death in epilepsy (SUDEP) is a critical concern, with seizure-induced respiratory arrest (S-IRA) being a major contributing factor. The serotonergic (5-HT) and noradrenergic (NE) neurons have emerged as key modulators of SUDEP, yet the network-level interactions and specific mechanisms underlying their protective roles remain poorly defined. This study is the first to demonstrate a synergistic effect of 5-HT and NE in mitigating S-IRA and SUDEP using DBA/1 mice. Through a combination of pharmacological interventions, calcium signal recordings, and optogenetics, results show that elevating 5-HT and NE levels via 5-hydroxytryptophan and the norepinephrine reuptake inhibitor atomoxetine significantly reduced SUDEP incidence, with evidence of a robust synergistic interaction. Furthermore, venlafaxine, a selective serotonin-norepinephrine reuptake inhibitor, enhances the…
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Taxonomy
TopicsNeuroscience and Neuropharmacology Research · Epilepsy research and treatment · Neuroscience of respiration and sleep