Glucose Deficiency Elevates Acid-Sensing Ion Channel 2a Expression and Increases Seizure Susceptibility in Temporal Lobe Epilepsy

Abstract Brain hypometabolism is a common epilepsy-related finding in both patients and animal models. Fluorodeoxyglucose positron emission tomography studies have shown that recurrent seizures lead to reduced glucose metabolism in certain brain regions, but no studies have definitively determined w...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Haitao Zhang, Guodong Gao, Yu Zhang, Yang Sun, Huanfa Li, Shan Dong, Wei Ma, Bei Liu, Weiwen Wang, Hao Wu, Hua Zhang
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
Materias:
R
Q
Acceso en línea:https://doaj.org/article/703d432973a4427da758546d8234d08c
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:703d432973a4427da758546d8234d08c
record_format dspace
spelling oai:doaj.org-article:703d432973a4427da758546d8234d08c2021-12-02T12:30:45ZGlucose Deficiency Elevates Acid-Sensing Ion Channel 2a Expression and Increases Seizure Susceptibility in Temporal Lobe Epilepsy10.1038/s41598-017-05038-02045-2322https://doaj.org/article/703d432973a4427da758546d8234d08c2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05038-0https://doaj.org/toc/2045-2322Abstract Brain hypometabolism is a common epilepsy-related finding in both patients and animal models. Fluorodeoxyglucose positron emission tomography studies have shown that recurrent seizures lead to reduced glucose metabolism in certain brain regions, but no studies have definitively determined whether this induces epileptogenesis. There is evidence that acid-sensing ion channel 2a (ASIC2a) affects epilepsy susceptibility. Transcription factor CP2 (TFCP2) regulates ASIC2a expression. We report that suppressed TFCP2 expression and elevated ASIC2a expression were associated with glucose hypometabolism in the hippocampi of humans with epilepsy and of rat epilepsy model brains. In cultured PC12 cells, we determined that glucose deficiency led to TFCP2 downregulating ASIC2a. Moreover, electrophysiological recordings from cultured rat hippocampal slices showed that ASIC2a overexpression resulted in more action potentials in CA1 pyramidal neurons and increased seizure susceptibility. Our findings suggest that hippocampal glucose hypometabolism elevates ASIC2a expression by suppressing TFCP2 expression, which further enhances the intrinsic excitability of CA1 pyramidal neurons and increases seizure susceptibility in patients with temporal lobe epilepsy.Haitao ZhangGuodong GaoYu ZhangYang SunHuanfa LiShan DongWei MaBei LiuWeiwen WangHao WuHua ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Haitao Zhang
Guodong Gao
Yu Zhang
Yang Sun
Huanfa Li
Shan Dong
Wei Ma
Bei Liu
Weiwen Wang
Hao Wu
Hua Zhang
Glucose Deficiency Elevates Acid-Sensing Ion Channel 2a Expression and Increases Seizure Susceptibility in Temporal Lobe Epilepsy
description Abstract Brain hypometabolism is a common epilepsy-related finding in both patients and animal models. Fluorodeoxyglucose positron emission tomography studies have shown that recurrent seizures lead to reduced glucose metabolism in certain brain regions, but no studies have definitively determined whether this induces epileptogenesis. There is evidence that acid-sensing ion channel 2a (ASIC2a) affects epilepsy susceptibility. Transcription factor CP2 (TFCP2) regulates ASIC2a expression. We report that suppressed TFCP2 expression and elevated ASIC2a expression were associated with glucose hypometabolism in the hippocampi of humans with epilepsy and of rat epilepsy model brains. In cultured PC12 cells, we determined that glucose deficiency led to TFCP2 downregulating ASIC2a. Moreover, electrophysiological recordings from cultured rat hippocampal slices showed that ASIC2a overexpression resulted in more action potentials in CA1 pyramidal neurons and increased seizure susceptibility. Our findings suggest that hippocampal glucose hypometabolism elevates ASIC2a expression by suppressing TFCP2 expression, which further enhances the intrinsic excitability of CA1 pyramidal neurons and increases seizure susceptibility in patients with temporal lobe epilepsy.
format article
author Haitao Zhang
Guodong Gao
Yu Zhang
Yang Sun
Huanfa Li
Shan Dong
Wei Ma
Bei Liu
Weiwen Wang
Hao Wu
Hua Zhang
author_facet Haitao Zhang
Guodong Gao
Yu Zhang
Yang Sun
Huanfa Li
Shan Dong
Wei Ma
Bei Liu
Weiwen Wang
Hao Wu
Hua Zhang
author_sort Haitao Zhang
title Glucose Deficiency Elevates Acid-Sensing Ion Channel 2a Expression and Increases Seizure Susceptibility in Temporal Lobe Epilepsy
title_short Glucose Deficiency Elevates Acid-Sensing Ion Channel 2a Expression and Increases Seizure Susceptibility in Temporal Lobe Epilepsy
title_full Glucose Deficiency Elevates Acid-Sensing Ion Channel 2a Expression and Increases Seizure Susceptibility in Temporal Lobe Epilepsy
title_fullStr Glucose Deficiency Elevates Acid-Sensing Ion Channel 2a Expression and Increases Seizure Susceptibility in Temporal Lobe Epilepsy
title_full_unstemmed Glucose Deficiency Elevates Acid-Sensing Ion Channel 2a Expression and Increases Seizure Susceptibility in Temporal Lobe Epilepsy
title_sort glucose deficiency elevates acid-sensing ion channel 2a expression and increases seizure susceptibility in temporal lobe epilepsy
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/703d432973a4427da758546d8234d08c
work_keys_str_mv AT haitaozhang glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT guodonggao glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT yuzhang glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT yangsun glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT huanfali glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT shandong glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT weima glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT beiliu glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT weiwenwang glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT haowu glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
AT huazhang glucosedeficiencyelevatesacidsensingionchannel2aexpressionandincreasesseizuresusceptibilityintemporallobeepilepsy
_version_ 1718394341857165312