| First Author | van Buerck L | Year | 2012 |
| Journal | Mol Cell Endocrinol | Volume | 362 |
| Issue | 1-2 | Pages | 139-48 |
| PubMed ID | 22698525 | Mgi Jnum | J:189544 |
| Mgi Id | MGI:5446093 | Doi | 10.1016/j.mce.2012.06.001 |
| Citation | van Buerck L, et al. (2012) Enhanced oxidative stress and endocrine pancreas alterations are linked to a novel glucokinase missense mutation in ENU-derived Munich Gck(D217V) mutants. Mol Cell Endocrinol 362(1-2):139-48 |
| abstractText | In the large-scale Munich N-ethyl-N-nitrosourea (ENU) mouse mutagenesis project murine models recapitulating human diseases were generated. In one strain, a novel missense mutation (D217V) in the glucokinase (Gck) gene was identified, resulting in decreased glucokinase activity. Heterozygous mutants display mild hyperglycaemia, disturbed glucose tolerance, and decreased glucose-induced insulin secretion. In contrast, homozygous mutants exhibit severe but not survival affecting hyperglycaemia, mild growth retardation, diminished oxidative capacity, and increased abundance of CHOP protein in the islets. Furthermore, the total islet and beta-cell volumes and the total volume of isolated beta-cells are significantly decreased in adult homozygous mutants, whereas in neonatal mice, beta-cell mass is not yet significantly decreased and islet neogenesis is unaltered. Therefore, reduced total islet and beta-cell volumes of adult homozygous mutants might predominantly emerge from disturbed postnatal islet neogenesis. Thus, we identified a novel Gck mutation in mice, with relevance in humans, leading to glycaemic disease. |
