Respiratory Network Stability and Modulatory Response to Substance P Require Nalcn.

Respiratory Network Stability and Modulatory Response to Substance P Require Nalcn.
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DOI:
10.1016/j.neuron.2017.03.024
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发表时间:
2017-04-19
期刊:
影响因子:
16.2
通讯作者:
Zoghbi HY
Zoghbi HY
中科院分区:
医学1区
文献类型:
--
作者:
Yeh SY;Huang WH;Wang W;Ward CS;Chao ES;Wu Z;Tang B;Tang J;Sun JJ;Esther van der Heijden M;Gray PA;Xue M;Ray RS;Ren D;Zoghbi HY

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Respiration is a rhythmic activity as well as one that requires responsiveness to internal and external circumstances; both the rhythm and neuromodulatory responses of breathing are controlled by brainstem neurons in the preBötzinger Complex (preBötC) and the retrotrapezoid nucleus (RTN), but the specific ion channels essential to these activities remain to be identified. Because deficiency of Sodium leak channel, non-selective (Nalcn) causes lethal apnea in humans and mice, we investigated Nalcn function in these neuronal groups. We found that one-third of mice lacking Nalcn in excitatory preBötC neurons died soon after birth; surviving mice developed apneas in adulthood. Interestingly, in both preBötC and RTN neurons, the Nalcn current influences the resting membrane potential, contributes to maintenance of stable network activity, and mediates modulatory responses to the neuropeptide substance P. These findings reveal Nalcn’s specific role in both rhythmic stability and responsiveness to neuropeptides within the respiratory network.
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