Molecular genetics of monogenetic beta-cell diabetes
Keywords:
Monogenic diabetes, -cell dysfunction, neonatal diabetes mellitus, maturity-onset diabetes of the young, early-onset type 2 diabetes, mitochondrial diabetes, transcription factor, hepatocyte nuclear factorAbstract
Monogenic b-cell diabetes – a rare form of diabetes mellitus (DM) is caused by defects in a group of genes controlling pancreatic b-cell development and function. The diabetic symptoms are manifested within a short period after birth as neonatal diabetes mellitus (NDM), in childhood or early adulthood as maturity-onset diabetes of the young (MODY) and mitochondrial diabetes. Several etiologic genes for this form of DM have been identified in many patients. The common etiologic genes encode b-cell transcription factors and proteins involving in glucose-stimulated insulin secretion. Owning to their nature of genetic heterogeneity, monogenic b-cell diabetes presents the characteristics of variable age at onset, degree of severity, and occurrence of diabetic complications. The study of this form of diabetes has provided new knowledge and a better insight into the molecular mechanism controlling normal and pathological states of b-cells as reviewed in this article.
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