Macromolecule suppressed GABA levels show no relationship with age in a pediatric sample.

Macromolecule suppressed GABA levels show no relationship with age in a pediatric sample.
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DOI:
10.1038/s41598-020-80530-8
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发表时间:
2021-01-12
期刊:
影响因子:
4.6
通讯作者:
Harris AD
Harris AD
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Bell T;Stokoe M;Harris AD

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抑制性神经递质γ-氨基丁酸(GABA)在皮质发育中起着至关重要的作用。因此,在发展过程中的GABA水平的变化特征具有重要意义的健康发展和发育障碍的研究。脑GABA水平可以使用GABA编辑的磁共振波谱(MRS)非侵入性地测量。然而,测量GABA的最常用的编辑技术导致GABA信号被大分子(MM)污染。因此,使用这种技术测量的GABA通常被称为GABA+。虽然数量很少,但以前的研究表明,GABA+水平在发育过程中随着年龄的增长而增加。然而,这些研究无法确定是否是GABA增加,或者MM水平是否增加。在这项研究中,我们使用了一种专门设计用于抑制MM信号的GABA编辑技术(MM-supp GABA)。在7-14岁的健康儿童中,我们没有发现MM-补充GABA与年龄的关系。这些发现表明,GABA+和年龄之间的关系是由MM水平的变化驱动的,而不是GABA水平的变化。此外,这些发现强调了在MRS定量中考虑MM水平的重要性。
The inhibitory neurotransmitter γ-Aminobutyric acid (GABA) plays a crucial role in cortical development. Therefore, characterizing changes in GABA levels during development has important implications for the study of healthy development and developmental disorders. Brain GABA levels can be measured non-invasively using GABA-edited magnetic resonance spectroscopy (MRS). However, the most commonly used editing technique to measure GABA results in contamination of the GABA signal with macromolecules (MM). Therefore, GABA measured using this technique is often referred to as GABA+ . While few in number, previous studies have shown GABA+ levels increase with age during development. However, these studies are unable to specify whether it is specifically GABA that is increasing or, instead, if levels of MM increase. In this study, we use a GABA-editing technique specifically designed to suppress the MM signal (MM-supp GABA). We find no relationship between MM-supp GABA and age in healthy children aged 7–14 years. These findings suggest that the relationship between GABA+ and age is driven by changes in MM levels, not by changes in GABA levels. Moreover, these findings highlight the importance of accounting for MM levels in MRS quantification.
肌酸,谷氨酰胺加谷氨酸和大分子在术语中的过早新生儿中央白质中减少。
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