Study of Genetic Imprinting on 3 Cases of Insulin-Dependent Diabetes Mellitus Developed in Early Infantile Period. |
Seung Mi Song, Jung Sim Kim, Myung Ryurl Oh, Sung Won Yang, Hye Kyung Han, Dong Kyu Jin |
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Abstract |
Infantile onset diabetes mellitus(especially, neonatal diabetes) is rare disorder and may be transient or permanent. Most patients are full-term but small-for-date infants and typical symptoms occur within the first 4-6 weeks of life, requiring insulin therapy. Neonatal diabetes differs from type 1 diabetes in many aspects and seems to form a distinct entity of inborn pancreatic malfunction. The transient cases often develop type 2 diabetes mellitus later in life. In recent reports, transient neonatal diabetes is associated with paternal uniparental isodisomy and unbalanced duplication of chromosome 6q22-23.
In our study, clinical course of case 1 was compatible with transient neonatal diabetes, but chromosomal abnormalities such as above was not shown in DNA analysis. In case 2 and 3, we could not decide exactly on genetic basis. |
Keywords:
Genetic imprinting;Transient neonatal diabetes |
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