Normalization of low biotinidase activity in a child with biotin deficiency after biotin supplementation.

Abstract

We report findings in a Japanese boy with severe skin rash attributable to biotin deficiency. The patient had an intracranial malformation and developed biotin deficiency due to tube feeding with a single formula for over one year. Results of urinary organic acid analysis were consistent with multiple carboxylase deficiency, and low biotinidase activity was also observed. After biotin supplementation, the skin rash improved and biotinidase activity normalized. We speculate that biotin is one regulating factor in the biosynthesis of biotinidase.

• Authors: M Kimura, T Fukui, Y Tagami, T Fujiwaki, M Yokoyama, C Ishioka, K Kumasaka, N Terada, S Yamaguchi
• Journal: Journal of inherited metabolic disease (J Inherit Metab Dis) Vol. 26 Issue 7 Pg. 715-9 ( 2003) ISSN: 0141-8955 [Print] United States
• PMID: 14707523 (Publication Type: Case Reports, Journal Article)

Chemical References

• Biotin
• Biotinidase

Topics

• Biotin (deficiency, metabolism, therapeutic use)
• Biotinidase (metabolism)
• Brain (abnormalities)
• Child
• Child, Preschool
• Dietary Supplements
• Eczema (drug therapy, etiology)
• Humans
• Intellectual Disability (etiology)
• Male
• Quadriplegia (etiology)