Voluntary urination control by brainstem neurons that relax the urethral sphincter.

Voluntary urination control by brainstem neurons that relax the urethral sphincter.
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DOI:
10.1038/s41593-018-0204-3
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发表时间:
2018-09
影响因子:
25
通讯作者:
Stowers L
Stowers L
中科院分区:
医学1区
文献类型:
--
作者:
Keller JA;Chen J;Simpson S;Wang EH;Lilascharoen V;George O;Lim BK;Stowers L

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自愿小便确保在安全和社会适当的情况下消除废物,即使没有紧迫的冲动。失控排尿或大小便失禁是一个常见的问题,几乎没有治疗选择。正常的尿液释放需要脑干中一个被称为巴林顿核(Bar)的小区域,但松弛尿路括约肌和实现尿流的特定神经元尚不清楚。在这里,我们确定了一小部分新的Bar神经元,它们控制着小鼠的尿道括约肌。这些兴奋性神经元表达雌激素受体1(BarESR1),投射到脊髓中松弛括约肌的中间神经元,并在自然排尿时活跃。对BarESR1神经元的光遗传刺激迅速启动麻醉和行为动物的括约肌爆发和有效排尿。相反,光发生抑制和化学发生抑制揭示了它们在动机排尿行为中的必要性。这些细胞的鉴定为控制排尿及其功能障碍提供了一个扩展的模型。
Voluntary urination ensures that waste is eliminated when safe and socially appropriate, even without a pressing urge. Uncontrolled urination, or incontinence, is a common problem with few treatment options. Normal urine release requires a small region in the brainstem known as Barrington’s nucleus (Bar), but specific neurons that relax the urethral sphincter and enable urine flow are unknown. Here we identify a small subset of novel Bar neurons that control the urethral sphincter in mice. These excitatory neurons express estrogen receptor 1 (BarESR1), project to sphincter-relaxing interneurons in the spinal cord and are active during natural urination. Optogenetic stimulation of BarESR1 neurons rapidly initiates sphincter bursting and efficient voiding in anesthetized and behaving animals. Conversely, optogenetic and chemogenetic inhibition reveals their necessity in motivated urination behavior. The identification of these cells provides an expanded model for the control of urination and its dysfunction.
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发表时间: 2016-04
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