{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,3]],"date-time":"2026-05-03T10:18:56Z","timestamp":1777803536520,"version":"3.51.4"},"reference-count":12,"publisher":"SAGE Publications","issue":"8","license":[{"start":{"date-parts":[[2012,1,12]],"date-time":"2012-01-12T00:00:00Z","timestamp":1326326400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J Child Neurol"],"published-print":{"date-parts":[[2012,8]]},"abstract":"<jats:p>MC, female, is the third child of a nonconsanguineous Portuguese couple, born after an uneventful pregnancy and delivery. A positive family history of ornithine transcarbamylase deficiency, associated with the IVS8+1 G&gt;A mutation in the ornithine transcarbamylase gene, prompted prenatal diagnosis with identification of the same mutation in the proband. During an episode of Klebsiella pneumoniae sepsis at 1.5 months of age, lactic acidosis and moderate hyperammonemia were noticed. After a short asymptomatic period, progressive neurologic symptoms, with normal ammonemia, persistent hyperlactacidemia, and typical lesions in brain computed tomography (CT) scan led to a diagnosis of Leigh syndrome. Mitochondrial respiratory chain complex V was reduced in the liver. The mtDNA 8993T&gt;G mutation was identified in the liver, muscle, and blood (82%-87% heteroplasmy). She died at 6 months of age. This case represents a benign phenotype of ornithine transcarbamylase deficiency, associated with a severe mitochondrial respiratory chain disorder due to an mtDNA pathogenic mutation.<\/jats:p>","DOI":"10.1177\/0883073811431015","type":"journal-article","created":{"date-parts":[[2012,1,12]],"date-time":"2012-01-12T21:15:22Z","timestamp":1326402922000},"page":"1059-1061","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":7,"title":["Mitochondrial DNA 8993T&gt;G Mutation in a Child With Ornithine Transcarbamylase Deficiency and Leigh Syndrome"],"prefix":"10.1177","volume":"27","author":[{"given":"Margarida","family":"Henriques","sequence":"first","affiliation":[{"name":"Centro de Desenvolvimento Dr Lu\u00eds Borges, Hospital Pedi\u00e1trico de Coimbra, CHC, Coimbra, Portugal"}]},{"given":"Lu\u00edsa","family":"Diogo","sequence":"additional","affiliation":[{"name":"Centro de Desenvolvimento Dr Lu\u00eds Borges, Hospital Pedi\u00e1trico de Coimbra, CHC, Coimbra, Portugal"}]},{"given":"Paula","family":"Garcia","sequence":"additional","affiliation":[{"name":"Centro de Desenvolvimento Dr Lu\u00eds Borges, Hospital Pedi\u00e1trico de Coimbra, CHC, Coimbra, Portugal"}]},{"given":"Jo\u00e3o","family":"Pratas","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Bioqu\u00edmica Gen\u00e9tica, Centro de Neuroci\u00eancias e Biologia Celular"}]},{"given":"Marta","family":"Sim\u00f5es","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Bioqu\u00edmica Gen\u00e9tica, Centro de Neuroci\u00eancias e Biologia Celular"}]},{"given":"Manuela","family":"Grazina","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Bioqu\u00edmica Gen\u00e9tica, Centro de Neuroci\u00eancias e Biologia Celular"},{"name":"Faculdade de Medicina, Universidade de Coimbra, Coimbra, Portugal"}]}],"member":"179","published-online":{"date-parts":[[2012,1,12]]},"reference":[{"key":"bibr1-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-662-04285-4_17"},{"key":"bibr2-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccc.2005.08.001"},{"key":"bibr3-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1016\/j.ymgme.2003.10.016"},{"key":"bibr4-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.a.31194"},{"key":"bibr5-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2006-1866"},{"key":"bibr6-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1007\/s100380050014"},{"key":"bibr7-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1016\/j.bbabio.2007.05.005"},{"key":"bibr8-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1177\/0883073809351983"},{"key":"bibr9-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1201\/b14623-8"},{"key":"bibr10-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1136\/jnnp.63.1.16"},{"key":"bibr11-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1023\/B:BOLI.0000031098.41409.55"},{"key":"bibr12-0883073811431015","doi-asserted-by":"publisher","DOI":"10.1086\/515453"}],"container-title":["Journal of Child Neurology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0883073811431015","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/0883073811431015","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0883073811431015","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T20:36:43Z","timestamp":1777495003000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/0883073811431015"}},"subtitle":["An Unexpected Association"],"short-title":[],"issued":{"date-parts":[[2012,1,12]]},"references-count":12,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2012,8]]}},"alternative-id":["10.1177\/0883073811431015"],"URL":"https:\/\/doi.org\/10.1177\/0883073811431015","relation":{},"ISSN":["0883-0738","1708-8283"],"issn-type":[{"value":"0883-0738","type":"print"},{"value":"1708-8283","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,1,12]]}}}