Gluconate suppresses seizure activity in developing brains by inhibiting CLC-3 chloride channels

Neonatal seizures are different from adult seizures, and many antiepileptic drugs that are effective in adults often fail to treat neonates. Here, we report that gluconate inhibits neonatal seizure by inhibiting CLC-3 chloride channels. We detect a voltage-dependent outward rectifying Cl- current mediated by CLC-3 Cl- channels in early developing brains but not adult mouse brains. Blocking CLC-3 Cl- channels by gluconate inhibits seizure activity both in neonatal brain slices and in neonatal animals with in vivo EEG recordings. Consistently, neonatal neurons of CLC-3 knockout mice lack the outward rectifying Cl- current and show reduced epileptiform activity upon stimulation. Mechanistically, we demonstrate that activation of CLC-3 Cl- channels alters intracellular Cl- homeostasis and enhances GABA excitatory activity. Our studies suggest that gluconate can suppress neonatal seizure activities through inhibiting CLC-3 Cl- channels in developing brains.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:12

Enthalten in:

Molecular brain - 12(2019), 1 vom: 15. Mai, Seite 50

Sprache:

Englisch

Beteiligte Personen:

Wu, Zheng [VerfasserIn]
Huo, Qingwei [VerfasserIn]
Ren, Liang [VerfasserIn]
Dong, Fengping [VerfasserIn]
Feng, Mengyang [VerfasserIn]
Wang, Yue [VerfasserIn]
Bai, Yuting [VerfasserIn]
Lüscher, Bernhard [VerfasserIn]
Li, Sheng-Tian [VerfasserIn]
Wang, Guan-Lei [VerfasserIn]
Long, Cheng [VerfasserIn]
Wang, Yun [VerfasserIn]
Wu, Gangyi [VerfasserIn]
Chen, Gong [VerfasserIn]

Links:

Volltext

Themen:

56-12-2
Anticonvulsant
CLC-3
Chloride Channels
Chloride channels
Chlorides
ClC-3 channel
Epilepsy
GABA
Gamma-Aminobutyric Acid
Gluconate
Gluconates
Gluconic acid
Journal Article
Neonatal seizure
R4R8J0Q44B
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 26.05.2020

Date Revised 26.05.2020

published: Electronic

Citation Status MEDLINE

doi:

10.1186/s13041-019-0465-0

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM297073346