Analyses of SLC13A5-epilepsy patients reveal perturbations of TCA cycle.

Analyses of SLC13A5-epilepsy patients reveal perturbations of TCA cycle.
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DOI:
10.1016/j.ymgme.2017.06.009
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发表时间:
2017-08
影响因子:
3.8
通讯作者:
Graham BH
Graham BH
中科院分区:
生物学2区
文献类型:
--
作者:
Bainbridge MN;Cooney E;Miller M;Kennedy AD;Wulff JE;Donti T;Jhangiani SN;Gibbs RA;Elsea SH;Porter BE;Graham BH

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询问来自3个家族的5名受试者的代谢特征,这些家族在SLC13A5和早期婴儿癫痫性脑病(EIEE)中具有罕见、无义和错义突变,其特征为严重的新生儿发作癫痫发作、精神发育迟滞和整体发育迟缓。使用血浆、CSF和尿液的质谱法来鉴定我们的受试者中一致失调的分析物。这些结果表明,SLC13A5功能的丧失导致柠檬酸盐的显著升高和柠檬酸循环中间体的失调,支持了SLC13A5功能的丧失改变三羧酸循环(TCA)代谢并可能破坏脑中的代谢区室化的假设。我们的研究结果表明,SLC13A5缺陷患者的血浆柠檬酸盐和其他TCA分析物的分析定义了一个诊断代谢特征,可以帮助诊断患有这种疾病的儿童。
To interrogate the metabolic profile of five subjects from three families with rare, nonsense and missense mutations in SLC13A5 and Early Infantile Epileptic Encephalopathies (EIEE) characterized by severe, neonatal onset seizures, psychomotor retardation and global developmental delay. Mass spectrometry of plasma, CSF and urine was used to identify consistently dysregulated analytes in our subjects. distinctive elevations of citrate and dysregulation of citric acid cycle intermediates, supporting the hypothesis that loss of SLC13A5 function alters tricarboxylic acid cycle (TCA) metabolism and may disrupt metabolic compartmentation in the brain. Our results indicate that analysis of plasma citrate and other TCA analytes in SLC13A5 deficient patients define a diagnostic metabolic signature that can aid in diagnosing children with this disease.
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