Here we investigate the molecular mechanism by which two heterozygous mutations in the second nucleotide-binding domain (NBD2) of SUR1 (R1380L and R1380C) separately cause neonatal diabetes.
Expression of the V59M Kir6.2 mutation in pancreatic beta cells alone is thus sufficient to recapitulate the neonatal diabetes observed in humans. beta-V59M islets also displayed a reduced percentage of beta cells, abnormal morphology, lower insulin content, and decreased expression of Kir6.2, SUR1, and insulin mRNA.
We report the response to sulfonylurea treatment in a boy with neonatal diabetes and marked developmental delay resulting from the KCNJ11 mutation V59M.
Two cases of transient NDM in extremely preterm, 24 weeks' gestational age (GA) triplets, due to a missense mutation c.685G>A in the KCNJ11 gene are presented.
We studied a male infant with compound heterozygous ABCC8 mutations (p.Arg826Trp/p.Ile93Thr) causing neonatal diabetes mellitus.He died of ketoacidosis.
We studied a male infant with compound heterozygous ABCC8 mutations (p.Arg826Trp/p.Ile93Thr) causing neonatal diabetes mellitus.He died of ketoacidosis.
Two novel mutations (E1506D, E1506G) in the nucleotide-binding domain 2 (NBD2) of the ATP-sensitive K(+) channel (K(ATP) channel) sulfonylurea receptor 1 (SUR1) subunit were detected heterozygously in patients with neonatal diabetes.
Overexpression of SUR1-Y356C in INS1(832/13) cells impaired glucose-induced cell depolarization and increased in intracellular free Ca(2+) concentration, albeit more weakly than neonatal diabetes-associated SUR1 mutants.
Here we investigate the molecular mechanism by which two heterozygous mutations in the second nucleotide-binding domain (NBD2) of SUR1 (R1380L and R1380C) separately cause neonatal diabetes.