Growth impairment in individuals with citrin deficiency

Chikahiko Numakura, Gen Tamiya, Masao Ueki, Tomoo Okada, Shun ichi Maisawa, Kanako Kojima-Ishii, Jun Murakami, Reiko Horikawa, Daisuke Tokuhara, Koichi Ito, Masanori Adachi, Takahiro Abiko, Tetsuo Mitsui, Kiyoshi Hayasaka

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Citrin deficiency causes neonatal intrahepatic cholestasis (NICCD), failure to thrive and dyslipidemia (FTTDCD), and adult-onset type II citrullinemia (CTLN2). Owing to a defect in the NADH-shuttle, citrin deficiency impairs hepatic glycolysis and de novo lipogenesis leading to hepatic energy deficit. To investigate the physiological role of citrin, we studied the growth of 111 NICCD-affected subjects (51 males and 60 females) and 12 NICCD-unaffected subjects (five males and seven females), including the body weight, height, and genotype. We constructed growth charts using the lambda-mu-sigma (LMS) method. The NICCD-affected subjects showed statistically significant growth impairment, including low birth weight and length, low body weight until 6 to 9 months of age, low height until 11 to 13 years of age, and low body weight in 7 to 12-year-old males and 8-year-old females. NICCD-unaffected subjects showed similar growth impairment, including low birth weight and height, and growth impairment during adolescence. In the third trimester, de novo lipogenesis is required for deposition of body fat and myelination of the developing central nervous system, and its impairment likely causes low birth weight and length. The growth rate is the highest during the first 6 months of life and slows down after 6 months of age, which is probably associated with the onset and recovery of NICCD. Adolescence is the second catch-up growth period, and the proportion and distribution of body fat change depending on age and sex. Characteristic growth impairment in citrin deficiency suggests a significant role of citrin in the catch-up growth via lipogenesis.

Original languageEnglish
Pages (from-to)501-508
Number of pages8
JournalJournal of Inherited Metabolic Disease
Volume42
Issue number3
DOIs
Publication statusPublished - 2019 May

Keywords

  • adult-onset type II citrullinemia
  • catch-up growth
  • citrin deficiency
  • de novo lipogenesis
  • neonatal intrahepatic cholestasis caused by citrin deficiency

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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