Role of the “little brain” in the gut in water and electrolyte homeostasis 1

Role of the “little brain” in the gut in water and electrolyte homeostasis 1
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肠道“小脑”在水和电解质稳态中的作用1

DOI:
--
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发表时间:
1989
期刊:
The FASEB Journal
影响因子:
--
通讯作者:
H. Cooke
H. Cooke
中科院分区:
--
文献类型:
--
作者:
H. Cooke

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肠道神经系统通过调节肠道上皮细胞对离子的转运,在维持体液内环境平衡方面起着关键作用。正常情况下,上皮细胞每天吸收大量的液体和离子,但张力活跃的粘膜下神经元持续抑制离子运输,限制肠道的吸收能力。专门的神经末梢检测肠腔内容物或肠壁机械活动的化学、渗透或热变化,并将这些信息编码为动作电位,沿着神经突起传播到神经节。神经节内的信息传递发生在烟碱胆碱能或其他突触。当运动神经元释放的神经递质与上皮细胞上的受体相互作用启动刺激-反应耦合时,离子传输会发生变化。除了乙酰胆碱,转导上皮细胞离子转运变化的信号在很大程度上是未知的,但可能包括血管活性肠肽或其他多肽。这会触发细胞内信使的变化,从而影响上皮细胞中离子通道的状态,从而抑制吸收过程或刺激分泌机制。当需要保存盐分和水分时,来自中枢神经系统的指令信号,或许还有来自肌间神经节的指令信号,将关闭粘膜下神经节中的突触回路,并增强肠道的吸收能力。--库克,H.J.肠道“小脑”在水和电解质动态平衡中的作用。FASEB J.3:127-138;1989。
The enteric nervous system plays a key role in maintenance of body fluid homeostasis by regulating the transport of ions by the intestinal epithelium. The epithelial cells normally absorb large volumes of fluid and ions daily, but tonically active submucosal neurons continuously suppress ion transport and limit the absorptive capacity of the intestine. Specialized nerve endings detect chemical, osmotic, or thermal alterations of the luminal contents or mechanical activity of the gut wall and encode this information as action potentials that propagate along nerve processes to the ganglia. Information transfer within the ganglia occurs at nicotinic cholinergic or other synapses. Ion transport is altered when neurotransmitters released from motor neurons interact with receptors on epithelial cells to initiate stimulus‐response coupling. The signals that transduce changes in epithelial ion transport are largely unknown, except for acetylcholine, but may include vasoactive intestinal peptide or other peptides. These trigger changes in intracellular messengers that influence the state of ionic channels in the epithelial cells and thereby inhibit absorptive processes or stimulate secretory mechanisms. When conservation of salt and water is necessary, command signals from the central nervous system, and perhaps from the myenteric ganglia, will shut down the synaptic circuits in the submucosal ganglia and enhance the absorptive capacity of the bowel.—Cooke, H. J. Role of the “little brain” in the gut in water and electrolyte homeostasis. FASEB J. 3: 127‐138; 1989.
介导豚鼠结肠分泌的胆碱能受体。
DOI: --
发表时间: 1987
期刊: The Journal of pharmacology and experimental therapeutics
影响因子: --
作者:
Kuwahara,A;Tien,XY;Wallace,LJ;Cooke,HJ
通讯作者: Cooke,HJ
胞质游离 Ca 调节活跃的肠道 Na 和 Cl 转运。
DOI: --
发表时间: 1984
期刊: Kroc Foundation series
影响因子: --
作者:
Donowitz,M;Wicks,J;Cusolito,S;Sharp,GW
通讯作者: Sharp,GW
龟结肠对钠吸收的胆碱能调节:基底外侧钾电导的作用。
DOI: 10.1152/ajpcell.1986.251.4.c563
发表时间: 1986
期刊: The American journal of physiology
影响因子: --
作者:
Venglarik,CJ;Dawson,DC
通讯作者: Dawson,DC