title: Outcome of organic acidurias in China.
abstract: From June 1998 to May 2007, 9566 urine samples were collected from patients with psychomotor deficits, seizures, vomiting and unconsciousness in Peking University First Hospital. Their urine organic acids profiles were analysed using gas chromatography - mass spectrometry (GCMS), GCMS solution and Inborn Errors of Metabolism Screening System software. In all patients, blood acylcarnitines were analysed using tandem mass spectrometry. One hundred and sixty-eight patients (1.76%) with organic acidurias were detected. Among them, 116 (116/ 168, 69.0%) had methylmalonic aciduria, 63 (54.3%) of these 116 patients had methylmalonic aciduria combined with homocysteinemia. Sixteen (9.5%) of those patients detected with organic acidurias had propionic aciduria, and 15 (8.9%) had multiple carboxylase deficiency. Seven (4.2%) had glutaric aciduria type 1. After dietary treatment, medicine and rehabilitation, clinical improvements were observed in more than half of the patients. Twenty-eight of the 168 patients (16.7%) recovered and led a normal life. The method of urine organic acid analysis by gas chromatography - mass spectrometry and blood acylcarnitines analysis by tandem mass spectrometry have been established and applied successfully in China, namely Beijing, Shanghai, Wuhan and Guangzhou. The prognoses of Chinese patients with organic acidurias have also improved significantly.
authors.affiliation: Department of Pediatrics, Peking University First Hospital, No. 1, Xi-an-men Road, Xicheng District, Beijing 100034, China. yanlingy@vip.sina.com
authors.forename: Yanling
authors.initials: Y
authors.lastname: Yang
authors.forename: Zhang
authors.initials: Z
authors.lastname: Yao
authors.forename: Jinqing
authors.initials: J
authors.lastname: Song
authors.forename: Yuki
authors.initials: Y
authors.lastname: Hasegawa
authors.forename: Masahiko
authors.initials: M
authors.lastname: Kimura
authors.forename: Seiji
authors.initials: S
authors.lastname: Yamaguchi
authors.forename: Yuwu
authors.initials: Y
authors.lastname: Jiang
authors.forename: Jiong
authors.initials: J
authors.lastname: Qin
authors.forename: Xiru
authors.initials: X
authors.lastname: Wu
mesh_terms: D002648:Child; D002675:Child, Preschool; D002681:China; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008659:Metabolic Diseases / Q000652:urine*; D008764:Methylmalonic Acid / Q000652:urine; D054069:Multiple Acyl Coenzyme A Dehydrogenase Deficiency / Q000652:urine; D056693:Propionic Acidemia / Q000652:urine
chemical_list: D008764:Methylmalonic Acid