Nateglinide is effective for diabetes mellitus with reactive hypoglycemia in a child with a compound heterozygous ABCC8 mutation

Akiko Saito-Hakoda, Tohru Yorifuji, Junko Kanno, Shigeo Kure, Ikuma Fujiwara

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

ABCC8 encodes the sulfonylurea receptor 1 (SUR1) subunits of the beta-cell ATP-sensitive potassium (K-ATP) channel playing a critical role in the regulation of insulin secretion, and inactivating mutations in ABCC8 cause congenital hyperinsulinism. Recently, ABCC8 inactivating mutations were reported to be involved in the development of diabetes mellitus later in life. We report a girl who was born macrosomic with transient hypoglycemia and thereafter developed diabetes mellitus accompanied by severe reactive hypoglycemia at the age of 11 yr. An OGTT (oral glucose tolerance test) revealed hyperglycemia due to poor early insulin response and subsequent hypoglycemia due to delayed prolonged insulin secretion. Hypoglycemia was improved by the combination of nateglinide,which stimulates early insulin secretion, and an alpha-glucosidase inhibitor, voglibose. Sequencing of the ABCC8 identified a compound heterozygous mutation (R1420H/F591fs604X), suggesting that this mutation may alter regulation of insulin secretion with advancing age, leading to diabetes mellitus with reactive hypoglycemia from hyperinsulinism. Therefore, long-term follow-up and periodic OGTTsare important for early detection of insulin dysregulation in congenital hyperinsulinism patients carrying the ABCC8 mutation, even though hypoglycemia resolves spontaneously during infancy.Furthermore, nateglinide may be useful therapeutically in the treatment of not only diabetes mellitusbut also reactive hypoglycemia

Original languageEnglish
Pages (from-to)45-52
Number of pages8
JournalClinical Pediatric Endocrinology
Volume21
Issue number3
DOIs
Publication statusPublished - 2012

Keywords

  • ABCC8
  • Congenital hyperinsulinism
  • Diabetes mellitus
  • Reactive hypoglycemia
  • Sur1

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Endocrinology, Diabetes and Metabolism
  • Endocrinology

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