Investigation of alanine, propionylcarnitine (C3) and 3-hydroxyisovalerylcarnitine (C5-OH) levels in patients with partial biotinidase deficiency


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Karaca M.

TURKISH JOURNAL OF BIOCHEMISTRY-TURK BIYOKIMYA DERGISI, vol.44, pp.482-486, 2019 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 44
  • Publication Date: 2019
  • Title of Journal : TURKISH JOURNAL OF BIOCHEMISTRY-TURK BIYOKIMYA DERGISI
  • Page Numbers: pp.482-486

Abstract

Background: Biotinidase deficiency is a treatable metabolic disease that can be seen with various neurological and dermatological complications. Biomarkers such as alanine, propionylcarnitine (C3) and 3-hydroxyisovalerylcarnitine (C5-OH), which are used to diagnose biotinidase deficiency, are also present. Materials and methods: In cases with partial biotinidase deficiency and normal biotinidase activity, alanine, C3 and C5-OH levels were compared in the field by liquid chromatography-tandem mass spectrometry. Results: There was no significant difference between subjects with partial biotinidase deficiency and those with normal biotinidase activity between C3 and C5-OH levels. The mean alanine levels in heel blood and plasma were significantly higher than those with normal biotinidase activity in patients with partial biotinidase deficiency. Conclusion: In cases with partial biotinidase deficiency, the heel blood alanine level that can be detected in the neonatal screening program may be a leading marker in diagnosis.