[1] Ensenauer R,Thiel T,Schwab KO,et al.Guanidinoacetate methyltransferase deficiency:differences of creatine uptake in human brain and muscle[J].Mol Genet Metab,2004,82(3):208-213. [2] Mercimek MS,Stöckler S,Adami A,et al.Clinical,biochemical and molecular features of guanidinoacetate methyltransferase deficiency[J].Neurology,2006,67(3):480-484. [3] Stöckler S,Holzbach U,Hanefeld F,et al.Creatine deficiency in the brain:a new treatable inborn error of metabolism[J].Pediatr Res,1994,36(3):409-413. [4] Dhar SU,Scaglia F,Li FY,et al.Expanded clinical and molecular spectrum of guanidinoacetate methyltransferase(GAMT)deficiency[J].Mol Genet Metab,2009,96(1):38-43. [5] O’Rourke DJ,Ryan S,Salomons G,et al.Guanidinoacetate methyltransferase (GAMT) deficiency:late onset of movement disorder and preserved expressive language[J].Dev Med Child Neurol,2009,51(5):404-407. [6] Bianchi MC,Tosetti M,Fornai F,et al.Reversible brain creatine deficiency in two sisters with normal blood creatine level[J].Ann Neurol,2002,47(4):511-513. [7] Item CB,Stöckler S,Stromberger C,et al.Arginine:glycine amindinotransferase (AGAT) deficiency: the third inborn error of creatine metabolism in humans[J].Am J Hum Genet,2001,69(5):1127-1133. [8] Battini R,Leuzzi V,Carducci C,et al.Creatine depletion in a new case with AGAT deficiency: clinical and genetic study in a large pedigree[J].Mol Genet Metab,2002,77(4):326-331. [9] Battini R, Alessandri MG, Leuzzi V, et al. Arginine: glycine amidinotransferase (AGAT) deficiency in a newborn:early treatment can prevent phenotypic expression of the disease[J].J Pediatr,2006,148(6):828-830. [10] Johnston K,Plawner L,Cooper L,et al.The second family with AGAT deficiency (creatine biosynthesis defect):diagnosis,treatment and the first prenatal diagnosis (abstract)[C]//Proceedings of the annual meeting of the American Society of Human Genetics,Salt Lake City:Utah,2005:58. [11] Edvardson S,Korman SH,Livne A,et al. l-Arginine:glycine amidinotransferase (AGAT) deficiency:clinical presentation and response to treatment in two patients with a novel mutation[J].Mol Genet Metab,2010,101(2/3):228-232. [12] Salomons GS,Dooren v SJ,Verhoeven NM,et al.X-Linked creatine-transporter gene (SLC6A8 ) defect:a new creatine-deficiency syndrome[J].Am J Hum Genet,2001,68(6):1497-1500. [13] Van de kamp JM,Betsalel OT,Mercimek MS,et al.Phenotype and genotype in 101 males with X-linked creatine transporter deficiency[J].J Med Genet,2013,50(7):463-472. [14] Mancini GM,Catsman-Berrevoets CE,de Coo IF,et al.Two novel mutations in SLC6A8 cause creatine transporter defect and distinctive X-linked mental retardation in two unrelated Dutch families[J].Am J Med Genet,2005,132(3):288-295. [15] Anselm IA,Coulter DL,Darras BT.Cardiac manifestations in a child with a novel mutation in creatine transporter gene SLC6A8[J].Neurology,2008,29(70):1642-1644. [16] Fons C,Sempere A,Sanmartí FX,et al.Epilepsy spectrum in cerebral creatine transporter deficiency[J].Epilepsia,2009,50(9):2168-2170. [17] Mancardi MM,Caruso U,Schiaffino MC,et al.Severe epilepsy in X-linked creatine transporter defect(CRTR-D) [J].Epilepsia,2007,48(6):1211-1213. [18] Mercimek-Mahmutoglu S,Connolly MB,Poskitt K,et al.Treatment of intractable epilepsy in a female with SLC6A8 deficiency[J].Mol Genet Metab,2010,101(4):409-412. [19] Kampvd JM,Mancini GM,Pouwels PJ,et al.Clinical features and X-inactivation in females heterozygous for creatine transporter defect[J].Clin Genet,2011,79(3):264-272. [20] Clark AJ,Rosenberg EH,Almeida LS,et al.X-Linked creatine transporter (SLC6A8) mutations in about 1% of males with mental retardation of unknown etiology[J].Hum Genet,2006,119(6):604-610. [21] Lion-Francois L,Cheillan D,Pitelet G,et al.High frequency of creatine deficiency syndromes in patients with unexplained mental retardation[J].Neurology,2006,67(9):1713-1714. [22] Comeaux MS,Wang J,Wang G,et al.Biochemical molecular,and clinical diagnoses of patients with cerebral creatine deficiency syndromes[J].Mol Genet Metab,2013,109(3):260-268. [23] Carducci C,Santagata S,Leuzzi V,et al.Quantitative determination of guanidinoacetate and creatine in dried blood spot by flow injection analysis-electrospray tandem mass spectrometry[J].Clin Chim Acta,2006,364 (1/2):180-187. [24] Mercimek MS,Muehl A,Salomons GS,et al.Screening for X-linked creatine transporter (SLC6A8) deficiency via simultaneous determination of urinary creatine to creatinine ratio by tandem mass-spectrometry[J].Mol Genet Metab,2009,96(4):273-275. [25] Verhoeven NM,Roos B,Struys EA,et al.Enzyme assay for diagnosis of guanidinoacetate methyltransferase deficiency[J].Clin Chem,2004,50(2):441-443. [26] Rosenberg EH,Martínez Muñoz C,Betsalel OT,et al.Functional characterization of missense variants in the creatine transporter gene (SLC6A8 ):improved diagnostic application[J].Hum Mutat,2007,28(9):890-896. [27] Cheillan D,Salomons GS,Acquaviva C,et al.Prenatal diagnosis of guanidinoacetate methyltransferase deficiency:increased guanidinoacetate concentrations in amniotic fluid[J].Clin Chem,2006,52(4):775-777. [28] Arias A, Corbella M, Fons C, et al. Creatine transporter deficiency:prevalence among patients with mental retardation and pitfalls in metabolite screening[J].Clin Biochem,2007,40:1328-1331. [29] Schulze A, Hoffmann GF, Bachert P, et al. Presymptomatic treatment of neonatal guanidinoacetate methyltransferase deficiency[J].Neurology,2006,67(4):719-721. |