{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T02:17:29Z","timestamp":1789179449851,"version":"build-2803163510"},"reference-count":38,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2014,9,24]],"date-time":"2014-09-24T00:00:00Z","timestamp":1411516800000},"content-version":"vor","delay-in-days":54,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pediatrics International"],"published-print":{"date-parts":[[2014,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>There are two classifications of hereditary hyperprolinemia: type <jats:styled-content style=\"fixed-case\">I<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">HPI<\/jats:styled-content>) and type <jats:styled-content style=\"fixed-case\">II<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">HPII<\/jats:styled-content>). Each type is caused by an autosomal recessive inborn error of the proline metabolic pathway. <jats:styled-content style=\"fixed-case\">HPI<\/jats:styled-content> is caused by an abnormality in the proline\u2010oxidizing enzyme (<jats:styled-content style=\"fixed-case\">POX<\/jats:styled-content>). <jats:styled-content style=\"fixed-case\">HPII<\/jats:styled-content> is caused by a deficiency of \u0394\u20101\u2010pyrroline\u20105\u2010carboxylate (<jats:styled-content style=\"fixed-case\">P5C<\/jats:styled-content>) dehydrogenase (<jats:styled-content style=\"fixed-case\">P5CDh<\/jats:styled-content>). The clinical features of <jats:styled-content style=\"fixed-case\">HPI<\/jats:styled-content> are unclear. Nephropathy, uncontrolled seizures, mental retardation or schizophrenia have been reported in <jats:styled-content style=\"fixed-case\">HPI<\/jats:styled-content>, but a benign phenotype without neurological problems has also been reported. The clinical features of <jats:styled-content style=\"fixed-case\">HPII<\/jats:styled-content> are also unclear. In addition, the precise incidences of <jats:styled-content style=\"fixed-case\">HPI<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">HPII<\/jats:styled-content> are unknown. Only two cases of <jats:styled-content style=\"fixed-case\">HPI<\/jats:styled-content> and one case of <jats:styled-content style=\"fixed-case\">HPII<\/jats:styled-content> have been identified in <jats:styled-content style=\"fixed-case\">J<\/jats:styled-content>apan through a questionnaire survey and by a study of previous reports. This suggests that hyperprolinemia is a very rare disease in <jats:styled-content style=\"fixed-case\">J<\/jats:styled-content>apan, consistent with earlier reports in Western countries. The one case of <jats:styled-content style=\"fixed-case\">HPII<\/jats:styled-content> found in <jats:styled-content style=\"fixed-case\">J<\/jats:styled-content>apan was diagnosed in an individual with influenza\u2010associated encephalopathy. This suggests that <jats:styled-content style=\"fixed-case\">HPII<\/jats:styled-content> might reduce the threshold for convulsions, thereby increasing the sensitivity of individuals with influenza\u2010associated encephalopathy. The current study presents diagnostic criteria for <jats:styled-content style=\"fixed-case\">HPI<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">HPII<\/jats:styled-content>, based on plasma proline level, with or without measurements of urinary <jats:styled-content style=\"fixed-case\">P5C<\/jats:styled-content>. In the future, screening for <jats:styled-content style=\"fixed-case\">HPI<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">HPII<\/jats:styled-content> in healthy individuals, or patients with relatively common diseases such as developmental disabilities, epilepsy, schizophrenia or behavioral problems will be important.<\/jats:p>","DOI":"10.1111\/ped.12420","type":"journal-article","created":{"date-parts":[[2014,6,17]],"date-time":"2014-06-17T00:18:39Z","timestamp":1402964319000},"page":"492-496","source":"Crossref","is-referenced-by-count":43,"title":["Biochemical and clinical features of hereditary hyperprolinemia"],"prefix":"10.1111","volume":"56","author":[{"given":"Hiroshi","family":"Mitsubuchi","sequence":"first","affiliation":[{"name":"Department of Neonatology Kumamoto University Hospital  Kumamoto Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kimitoshi","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Pediatrics Kumamoto University Graduate School of Medicine  Kumamoto Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shirou","family":"Matsumoto","sequence":"additional","affiliation":[{"name":"Department of Pediatrics Kumamoto University Graduate School of Medicine  Kumamoto Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fumio","family":"Endo","sequence":"additional","affiliation":[{"name":"Department of Pediatrics Kumamoto University Graduate School of Medicine  Kumamoto Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,9,24]]},"reference":[{"key":"e_1_2_8_2_1","first-page":"1821","volume-title":"The Metabolic and Molecular Bases of Inherited Disease","author":"Phang JM","year":"2001"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1093\/jn\/138.10.2016S"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM196207122670201"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(64)92605-4"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM196506172722401"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1651-2227.1968.tb04682.x"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-1809.1968.tb00573.x"},{"key":"e_1_2_8_9_1","first-page":"554","article-title":"Hyperprolinemia: Clinical and biochemical family study","volume":"44","author":"Woody NC","year":"1969","journal-title":"Pediatrics"},{"key":"e_1_2_8_10_1","first-page":"165","article-title":"Type I hyperprolinemia. 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