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Published in: BMC Medical Genetics 1/2006

Open Access 01-12-2006 | Research article

Analysis of coding variants in the betacellulin gene in type 2 diabetes and insulin secretion in African American subjects

Authors: Steven C Elbein, Xiaoqin Wang, Mohammad A Karim, Winston S Chu, Kristi D Silver

Published in: BMC Medical Genetics | Issue 1/2006

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Abstract

Background

Betacellulin is a member of the epidermal growth factor family, expressed at the highest levels predominantly in the pancreas and thought to be involved in islet neogenesis and regeneration. Nonsynonymous coding variants were reported to be associated with type 2 diabetes in African American subjects. We tested the hypotheses that these previously identified variants were associated with type 2 diabetes in African Americans ascertained in Arkansas and that they altered insulin secretion in glucose tolerant African American subjects.

Methods

We typed three variants, exon1 Cys7Gly (C7G), exon 2 Leu44Phe (L44F), and exon 4 Leu124Met (L124M), in 188 control subjects and 364 subjects with type 2 diabetes. We tested for altered insulin secretion in 107 subjects who had undergone intravenous glucose tolerance tests to assess insulin sensitivity and insulin secretion.

Results

No variant was associated with type 2 diabetes, and no variant altered insulin secretion or insulin sensitivity. However, an effect on lipids was observed for all 3 variants, and variant L124M was associated with obesity measures.

Conclusion

We were unable to confirm a role for nonsynonymous variants of betacellulin in the propensity to type 2 diabetes or to impaired insulin secretion.
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Metadata
Title
Analysis of coding variants in the betacellulin gene in type 2 diabetes and insulin secretion in African American subjects
Authors
Steven C Elbein
Xiaoqin Wang
Mohammad A Karim
Winston S Chu
Kristi D Silver
Publication date
01-12-2006
Publisher
BioMed Central
Published in
BMC Medical Genetics / Issue 1/2006
Electronic ISSN: 1471-2350
DOI
https://doi.org/10.1186/1471-2350-7-62

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