TRMU deficiency: A broad clinical spectrum responsive to cysteine supplementation.

TRMU deficiency: A broad clinical spectrum responsive to cysteine supplementation.
复制标题

TRMU缺乏:对半胱氨酸补充有反应的广泛临床谱。

DOI:
10.1016/j.ymgme.2021.01.005
复制
发表时间:
2021-03
影响因子:
3.8
通讯作者:
Ganetzky R
Ganetzky R
中科院分区:
生物学2区
文献类型:
--
作者:
Murali CN;Soler-Alfonso C;Loomes KM;Shah AA;Monteil D;Padilla CD;Scaglia F;Ganetzky R

文献摘要

参考文献

相似文献

TRMU 是一种对线粒体 DNA 翻译至关重要的核基因,它编码 tRNA 5-甲基氨基甲基-2-硫代尿苷酸甲基转移酶,该酶可硫醇化线粒体 tRNA。 TRMU 中的双等位基因致病变异与短暂性婴儿肝衰竭有关。其他不太常见的表现如 Leigh 综合征、肌病和心肌病也有报道。最近的研究表明,提供外源性 L-半胱氨酸或 N-乙酰半胱氨酸可能会改善致病变异的影响并改善疾病的自然史。在这里,我们报告了 6 名患有双等位基因 TRMU 变异的婴儿,其中包括 4 名之前未发表的患者,所有患者均接受外源半胱氨酸治疗。我们重点介绍接受原位肝移植的受影响患者的第一份报告、补充半胱氨酸的长期影响以及最初表现模仿多种先天性代谢错误的能力。我们建议,所有出现持续性乳酸酸中毒和低血糖的儿童都应怀疑 TRMU 缺乏,并且在分子诊断之前应考虑联合补充 N-乙酰半胱氨酸和 L-半胱氨酸,因为这是一种低风险的方法,可以提高生存率并减轻病程的严重程度。
TRMU is a nuclear gene crucial for mitochondrial DNA translation by encoding tRNA 5-methylaminomethyl-2-thiouridylate methyltransferase, which thiolates mitochondrial tRNA. Biallelic pathogenic variants in TRMU are associated with transient infantile liver failure. Other less common presentations such as Leigh syndrome, myopathy, and cardiomyopathy have been reported. Recent studies suggested that provision of exogenous L-cysteine or N-acetylcysteine may ameliorate the effects of disease-causing variants and improve the natural history of the disease. Here, we report six infants with biallelic TRMU variants, including four previously unpublished patients, all treated with exogenous cysteine. We highlight the first report of an affected patient undergoing orthotopic liver transplantation, the long-term effects of cysteine supplementation, and the ability of the initial presentation to mimic multiple inborn errors of metabolism. We propose that TRMU deficiency should be suspected in all children presenting with persistent lactic acidosis and hypoglycemia, and that combined N-acetylcysteine and L-cysteine supplementation should be considered prior to molecular diagnosis, as this is a low-risk approach that may increase survival and mitigate the severity of the disease course.
DOI: 10.1136/jmg.2011.089995
发表时间: 2011-10
影响因子: 4
作者:
Uusimaa J;Jungbluth H;Fratter C;Crisponi G;Feng L;Zeviani M;Hughes I;Treacy EP;Birks J;Brown GK;Sewry CA;McDermott M;Muntoni F;Poulton J
通讯作者: Poulton J
DOI: 10.1007/s10545-010-9250-z
发表时间: 2011-02-01
影响因子: 4.2
作者:
Schara, Ulrike;von Kleist-Retzow, Juergen-Christoph;Horvath, Rita
通讯作者: Horvath, Rita
DOI: 10.1016/j.ajhg.2009.08.004
发表时间: 2009-09-11
影响因子: 9.8
作者:
Zeharia, Avraham;Shaag, Avraham;Elpeleg, Orly
通讯作者: Elpeleg, Orly
DOI: 10.3390/jcm6050050
发表时间: 2017-05-03
影响因子: 3.9
作者:
Enns GM;Cowan TM
通讯作者: Cowan TM
DOI: 10.1007/8904_2013_230
发表时间: 2013-01-01
期刊: JIMD REPORTS, VOL 11
影响因子: --
作者:
Gaignard, Pauline;Gonzales, Emmanuel;Slama, Abdelhamid
通讯作者: Slama, Abdelhamid