Homocysteine enhances the excitability of cultured hippocampal neurons without altering the gene expression of voltage-gated ion channels.

IF 3.3 3区 医学 Q2 NEUROSCIENCES
Alzbeta Filipova, Matus Tomko, Katarina Ondacova, Lucia Dubiel-Hoppanova, Nikola Chmúrčiaková, Leoš Cmarko, Robin N Stringer, Norbert Weiss, Lubica Lacinova
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引用次数: 0

Abstract

Elevated plasma homocysteine (Hcy) levels lead to hyperhomocysteinemia, a condition associated with various neurological disorders affecting multiple brain regions, including the hippocampus. In this study, we investigated the effects of exposing cultured rat hippocampal neurons to Hcy concentrations corresponding to mild, moderate, and severe hyperhomocysteinemia. A short 24-hour exposure had minimal effects, whereas prolonged exposure up to 14 days moderately enhanced hippocampal excitability without altering the gene expression of voltage-dependent calcium, sodium, or potassium channels or intracellular calcium levels. These findings suggest that Hcy-induced changes in neuronal excitability may contribute to neuropathologies associated with hyperhomocysteinemia.

同型半胱氨酸增强培养海马神经元的兴奋性,但不改变电压门控离子通道的基因表达。
血浆同型半胱氨酸(Hcy)水平升高导致高同型半胱氨酸血症,这是一种与影响多个大脑区域(包括海马体)的各种神经系统疾病相关的疾病。在这项研究中,我们研究了将培养的大鼠海马神经元暴露于轻度、中度和重度高同型半胱氨酸血症对应的Hcy浓度的影响。短时间24小时的暴露影响很小,而长时间暴露长达14天,可适度增强海马的兴奋性,而不改变电压依赖性钙、钠或钾通道的基因表达或细胞内钙水平。这些发现表明,hcy诱导的神经元兴奋性改变可能导致与高同型半胱氨酸血症相关的神经病变。
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来源期刊
Molecular Brain
Molecular Brain NEUROSCIENCES-
CiteScore
7.30
自引率
0.00%
发文量
97
审稿时长
>12 weeks
期刊介绍: Molecular Brain is an open access, peer-reviewed journal that considers manuscripts on all aspects of studies on the nervous system at the molecular, cellular, and systems level providing a forum for scientists to communicate their findings. Molecular brain research is a rapidly expanding research field in which integrative approaches at the genetic, molecular, cellular and synaptic levels yield key information about the physiological and pathological brain. These studies involve the use of a wide range of modern techniques in molecular biology, genomics, proteomics, imaging and electrophysiology.
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