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dc.contributor.author | Tondo, Mireia | - |
dc.contributor.author | Calpena, Eduardo | - |
dc.contributor.author | Arriola, Gema | - |
dc.contributor.author | Sanz, Paloma | - |
dc.contributor.author | Martorell, Loreto | - |
dc.contributor.author | Ormazabal, Aida | - |
dc.contributor.author | Castejón, Esperanza | - |
dc.contributor.author | Ugarte, Magdalena | - |
dc.contributor.author | Espinós, Carmen | - |
dc.contributor.author | Pérez, Belén | - |
dc.contributor.author | Pérez-Dueñas, Belén | - |
dc.contributor.author | Artuch, Rafael | - |
dc.date.accessioned | 2014-04-21T11:53:35Z | - |
dc.date.available | 2014-04-21T11:53:35Z | - |
dc.date.issued | 2013 | - |
dc.identifier | doi: 10.1016/j.ymgme.2013.06.021 | - |
dc.identifier | issn: 1096-7192 | - |
dc.identifier.citation | Molecular Genetics and Metabolism 110: 231- 236 (2013) | - |
dc.identifier.uri | http://hdl.handle.net/10261/95672 | - |
dc.description.abstract | Our aim was to report two new cases of hyperlysinemia type I describing the clinical, biochemical and molecular features of the disease and the outcome of lysine restriction. Two children presented with febrile seizures followed by developmental delay, clumsiness and epilepsy. At age 2 and 8. years a biochemical and genetic diagnosis of hyperlysinemia type I was confirmed and lysine-restricted diet was started in both cases. Three years after initiation of lysine restriction, case 1 had not suffered further seizures. In case 2, tremor and dysmetria improved, but fine motor clumsiness persisted. Mild cognitive impairment was present in both patients despite dietary treatment. Laboratory studies: Plasma, urine and cerebrospinal fluid amino acid concentrations were measured by ion exchange chromatography. Mutation analysis of the AASS gene was performed by directly sequencing the PCR products. The plasma lysine values were higher than 1200. μmol/L in both cases. Additionally, an increase in dibasic aminoaciduria was observed. Lysine restriction decreased plasma lysine values and nearly normalised dibasic aminoaciduria. Mutational screening of the AASS gene revealed that case 1 was a compound heterozygote for c.2662 + 1_2662 + 5delGTAAGinsTT and c.874A > G and that case 2 was a compound heterozygote for c.976_977delCA and c.1925C > G. In conclusion, we present two children with hyperlysinemia type I and neurological impairment in which implementation of lysine-restricted diet achieved a mild improvement of symptoms but did not reverse cognitive impairment. The partial decrease of lysine concentrations and the normalisation of urine excretion of dibasic amino acids after lysine restriction further reinforce the possibility of this therapeutic intervention, although further investigations seem necessary. © 2013 Elsevier Inc. | - |
dc.description.sponsorship | Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Instituto de Salud Carlos III, Spain | - |
dc.publisher | Elsevier | - |
dc.rights | closedAccess | - |
dc.subject | Dibasic amino acids | - |
dc.subject | 2-aminoadipic semialdehyde synthase deficiency | - |
dc.subject | Familial hyperlysinemia | - |
dc.subject | Lysine restriction | - |
dc.title | Clinical, biochemical, molecular and therapeutic aspects of 2 new cases of 2-aminoadipic semialdehyde synthase deficiency | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1016/j.ymgme.2013.06.021 | - |
dc.date.updated | 2014-04-21T11:53:36Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | none | - |
item.openairetype | artículo | - |
item.fulltext | No Fulltext | - |
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