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| Content Provider | Springer Nature Link |
|---|---|
| Author | Nielsen, Eva Maria D. Hansen, Lars Stissing, Trine Yanagisawa, Keiko Borch Johnsen, Knut Poulsen, Pernille Vaag, Allan Hansen, Torben Pedersen, Oluf |
| Copyright Year | 2005 |
| Abstract | CDK4 is involved in the regulation of body weight, pancreatic β-cell proliferation, insulin responsiveness, and diabetes pathogenesis. CDK4 activity is inhibited by CDKN1C, which is regulated by insulin. In addition, CDKN1C plays an important role in β-cell proliferation and is involved in the pathogenesis of the Beckwith-Wiedemann syndrome, a disorder characterized by neonatal hyperinsulinaemic hypoglycaemia and pre- and post-natal overgrowth. The aim of this study was to investigate if variations in the proximal promoter and the coding region of the CDKN1C and CDK4 genes are associated with type 2 diabetes or changes in related quantitative phenotypes among glucose-tolerant subjects. Mutation analyses of the two genes in 62 type 2 diabetic patients resulted in the discovery of seven variants of CDKN1C and two variants of CDK4. In a case-control study comprising 717 type 2 diabetic patients and 518 glucose-tolerant subjects the most frequent variants did not show any difference in allele frequencies between the type 2 diabetic patients and the control subjects. However, in two genotype-quantitative trait correlation studies involving 206 glucose-tolerant offspring of type 2 diabetic patients and 359 young, healthy subjects the CDKN1C del171APVA variant associated with increased birth weight (P=0.05 and P=0.05). Furthermore, the same variant tended to be associated with decreased basal glucose oxidation among 16 genotypically discordant dizygotic twins (P=0.03). In a genotype-quantitative trait study involving 500 middle-aged glucose-tolerant subjects the CDK4 IVS2-31G→A variant was associated with an increased waist circumference (P=0.03) and waist-to-hip ratio (P=0.02) and altered fasting plasma glucose (P=0.03). However, these later findings could not be replicated in additional studies. In conclusion, variants in CDKN1C may contribute to the inter-individual variation in birth weight. |
| Starting Page | 353 |
| Ending Page | 361 |
| Page Count | 9 |
| File Format | |
| ISSN | 09462716 |
| Journal | Journal of Molecular Medicine |
| Volume Number | 83 |
| Issue Number | 5 |
| e-ISSN | 14321440 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2005-04-09 |
| Publisher Place | Berlin/Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | CDKN1C CDK4 Mutation analysis Polymorphisms Birth weight Type 2 diabetes |
| Content Type | Text |
| Resource Type | Article |
| Subject | Drug Discovery Molecular Medicine Genetics (clinical) |
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