Medications used in the treatment of hypoglycemia due to congenital hyperinsulinism of infancy (HI).

Congenital hyperinsulinism of infancy is the commonest cause of persistent and recurrent hypoglycaemia in the neonatal and infancy period. It is a heterogeneous disorder with respect to clinical presentation, histology, molecular biology and genetics. The biochemical profile is one of hypoketotic, hypofattyacidemic hypoglycemia.

Infantile hyperinsulinism associated with enteropathy, deafness and renal tubulopathy: clinical manifestations of a syndrome caused by a contiguous gene deletion located on chromosome 11p.

We describe the clinical features of a new syndrome causing hyperinsulinism in infancy (HI), severe enteropathy, profound sensorineural deafness, and renal tubulopathy in three children born to two pairs of consanguineous parents. This combination of clinical features is explained by a 122-kb contiguous gene deletion on the short arm of chromosome 11. It deletes 22 of the 39 exons of the gene coding for the SUR1 component of the KATP channel on the pancreatic beta-cell thereby causing severe HI.

Genetics and pathophysiology of hyperinsulinism in infancy.

Hyperinsulinism in infancy (HI) is a condition of neonates and early childhood. For many years the pathophysiology of this potentially lethal disorder was unknown. Advances in the genetics, histopathology and molecular physiology of this disease have now provided insights into the causes of beta-cell dysfunction and revealed levels of diversity far in excess of our previous knowledge.

Hyperinsulinism in infancy: from basic science to clinical disease.

Ion channelopathies have now been described in many well-characterized cell types including neurons, myocytes, epithelial cells, and endocrine cells. However, in only a few cases has the relationship between altered ion channel function, cell biology, and clinical disease been defined. Hyperinsulinism in infancy (HI) is a rare, potentially lethal condition of the newborn and early childhood.