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The clinical picture of early-onset cobalamin C defect (methylmalonic aciduria and homocystinuria)

机译:早发型钴胺素C缺陷(甲基丙二酸尿症和高半胱氨酸尿症)的临床表现

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摘要

Cobalamin C defect is a rare inborn error of intracetluiar cobalamin metabolism characterised by methylmalonic aciduria and homocystinuria. The early-onset form is a multi-systemic disorder with poor neurological outcome. Treatment is based on a combined approach aimed at improving metabolic abnormalities. We report details of clinical findings in a series of 11 patients with cobalamin C defect in whom onset of symptoms occurred within the first month of life. At onset, all patients presented with at least five major clinical signs including feeding difficulties (11/11), hypotonia (11/11}, haematological abnormalities (10/11), failure to thrive (9/11), microcephaly (9/11), coma/lethargy (7/11), seizures (6/11), hydrocephalus {5/11), cardiomyopathy (3/11), haemolytic uremic syndrome (2/11), atrophic gastritis (2/11). Two died at the time of diagnosis.
机译:钴胺素C缺陷是内分泌钴胺素代谢的罕见先天性错误,其特征在于甲基丙二酸尿症和高半胱氨酸尿症。早期发作形式是一种多系统性疾病,神经系统预后较差。治疗基于旨在改善代谢异常的综合方法。我们报告了一系列11例钴胺素C缺陷患者的临床发现,这些患者在生命的第一个月内就出现了症状。发病时,所有患者均出现至少五个主要临床体征,包括进食困难(11/11),肌张力低下(11/11},血液学异常(10/11)、,壮失败(9/11),小头畸形(9 / 11),昏迷/嗜睡(7/11),癫痫发作(6/11),脑积水(5/11),心肌病(3/11),溶血性尿毒症候群(2/11),萎缩性胃炎(2/11)。诊断时有两人死亡。

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