KCNQ Current Contributes to Inspiratory Burst Termination in the Pre-Bötzinger Complex of Neonatal Rats in vitro.
KCNQ Current Contributes to Inspiratory Burst Termination in the Pre-Bötzinger Complex of Neonatal Rats in vitro.
复制标题
DOI:
10.3389/fphys.2021.626470
复制
发表时间:
2021
影响因子:
4
通讯作者:
Funk GD
中科院分区:
文献类型:
--
作者:
Revill AL;Katzell A;Del Negro CA;Milsom WK;Funk GD
The pre-Bötzinger complex (preBötC) of the ventral medulla generates the mammalian inspiratory breathing rhythm. When isolated in explants and deprived of synaptic inhibition, the preBötC continues to generate inspiratory-related rhythm. Mechanisms underlying burst generation have been investigated for decades, but cellular and synaptic mechanisms responsible for burst termination have received less attention. KCNQ-mediated K+ currents contribute to burst termination in other systems, and their transcripts are expressed in preBötC neurons. Therefore, we tested the hypothesis that KCNQ channels also contribute to burst termination in the preBötC. We recorded KCNQ-like currents in preBötC inspiratory neurons in neonatal rat slices that retain respiratory rhythmicity. Blocking KCNQ channels with XE991 or linopirdine (applied via superfusion or locally) increased inspiratory burst duration by 2- to 3-fold. By contrast, activation of KCNQ with retigabine decreased inspiratory burst duration by ~35%. These data from reduced preparations suggest that the KCNQ current in preBötC neurons contributes to inspiratory burst termination.
登录
查看更多内容
DOI:
10.1124/jpet.117.241679
发表时间:
2017-07-01
影响因子:
3.5
作者:
Greene, Derek L.;Kang, Seungwoo;Hoshi, Naoto
通讯作者:
Hoshi, Naoto
DOI:
10.1073/pnas.1421997112
发表时间:
2015-08-04
影响因子:
11.1
作者:
Guerrier, Claire;Hayes, John A.;Holcman, David
通讯作者:
Holcman, David
DOI:
10.1073/pnas.1711536114
发表时间:
2017-11-28
影响因子:
11.1
作者:
Cregg, Jared M.;Chu, Kevin A.;Silver, Jerry
通讯作者:
Silver, Jerry
影响因子:
4.7
作者:
Costa, AMN;Brown, BS
通讯作者:
Brown, BS
影响因子:
5.5
作者:
Del Negro, Christopher A.;Kam, Kaiwen;Feldman, Jack L.
通讯作者:
Feldman, Jack L.