TY - CHAP M1 - Book, Section TI - Ornithine Delta-Aminotransferase Deficiency A1 - Bissonnette, Bruno A1 - Luginbuehl, Igor A1 - Marciniak, Bruno A1 - Dalens, Bernard J. PY - 2006 T2 - Syndromes: Rapid Recognition and Perioperative Implications AB - Rare genetic disorder affecting mitochondrial metabolism of ornithine. It is characterized by the presence of gyrate atrophy of the retina leading to night blindness that begins in late childhood, accompanied by sharply demarcated circular areas of chorioretinal atrophy. The areas of atrophy enlarge during the second and third decades. Posterior subcapsular cataracts have been associated by the end of the second decade. Computed tomography and magnetic resonance imaging (MRI) studies demonstrated the presence of type II muscle fiber changes in large muscle groups because of hyperornithinemia-induced deficiency of high-energy creatine phosphate. Brain MRI revealed degenerative lesions in the white matter in 50% of the gyrate atrophy patients, and 70% present premature atrophic changes. Early degenerative, atrophic brain changes and abnormal EEG are features of gyrate atrophy, in addition to the well-characterized eye and muscle manifestations. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/04/19 UR - accessanesthesiology.mhmedical.com/content.aspx?aid=58082184 ER -