Transient neonatal diabetes mellitus with macroglossia diagnosed by methylation specific PCR (MS-PCR)

Transient neonatal diabetes mellitus (TNDM) has been associated with paternal uniparental isodisomy of chromosome 6, paternally inherited duplication of 6q24, or a methylation defect at a CpG island of the ZAC or HYMAI gene. We experienced a case of TNDM in which the patient presented with hyperglyc...

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Main Authors: Hye Young Jin, Jin-Ho Choi, Gu-Hwan Kim, Han-Wook Yoo
Format: Article
Language:English
Published: Korean Pediatric Society 2010-03-01
Series:Korean Journal of Pediatrics
Online Access:http://www.kjp.or.kr/upload/2010530322-20100443174543.PDF
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author Hye Young Jin
Jin-Ho Choi
Gu-Hwan Kim
Han-Wook Yoo
author_facet Hye Young Jin
Jin-Ho Choi
Gu-Hwan Kim
Han-Wook Yoo
author_sort Hye Young Jin
collection DOAJ
description Transient neonatal diabetes mellitus (TNDM) has been associated with paternal uniparental isodisomy of chromosome 6, paternally inherited duplication of 6q24, or a methylation defect at a CpG island of the ZAC or HYMAI gene. We experienced a case of TNDM in which the patient presented with hyperglycemia, macroglossia, and intrauterine growth retardation, caused by a paternally derived HYMAI. An 18-day-old female infant was admitted to the hospital because of macroglossia and recurrent hyperglycemia. In addition to the macroglossia, she also presented with large fontanelles, micrognathia, and prominent eyes. Serum glucose levels were 200&amp&#59;#8211&#59;300 mg/dL and they improved spontaneously 2 days after admission. To identify the presence of a maternal methylated allele, bisulfite-treated genomic DNA from peripheral blood was prepared and digested with BssHII after polymerase chain reaction (PCR) amplification with methylation-specific HYMAI primers. PCR and restriction fragment length polymorphism analysis showed that the patient had only the paternal origin of the HYMA1 gene. TNDM is associated with a methylation defect in chromosome 6, suggesting that an imprinted gene on chromosome 6 is responsible for this phenotype.
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spelling doaj.art-041fef09a4ac4e9ca09e8bf20f0cf7cd2022-12-22T02:54:37ZengKorean Pediatric SocietyKorean Journal of Pediatrics1738-10612092-72582010-03-0153343243610.3345/kjp.2010.53.3.432Transient neonatal diabetes mellitus with macroglossia diagnosed by methylation specific PCR (MS-PCR)Hye Young JinJin-Ho ChoiGu-Hwan KimHan-Wook YooTransient neonatal diabetes mellitus (TNDM) has been associated with paternal uniparental isodisomy of chromosome 6, paternally inherited duplication of 6q24, or a methylation defect at a CpG island of the ZAC or HYMAI gene. We experienced a case of TNDM in which the patient presented with hyperglycemia, macroglossia, and intrauterine growth retardation, caused by a paternally derived HYMAI. An 18-day-old female infant was admitted to the hospital because of macroglossia and recurrent hyperglycemia. In addition to the macroglossia, she also presented with large fontanelles, micrognathia, and prominent eyes. Serum glucose levels were 200&amp&#59;#8211&#59;300 mg/dL and they improved spontaneously 2 days after admission. To identify the presence of a maternal methylated allele, bisulfite-treated genomic DNA from peripheral blood was prepared and digested with BssHII after polymerase chain reaction (PCR) amplification with methylation-specific HYMAI primers. PCR and restriction fragment length polymorphism analysis showed that the patient had only the paternal origin of the HYMA1 gene. TNDM is associated with a methylation defect in chromosome 6, suggesting that an imprinted gene on chromosome 6 is responsible for this phenotype.http://www.kjp.or.kr/upload/2010530322-20100443174543.PDF
spellingShingle Hye Young Jin
Jin-Ho Choi
Gu-Hwan Kim
Han-Wook Yoo
Transient neonatal diabetes mellitus with macroglossia diagnosed by methylation specific PCR (MS-PCR)
Korean Journal of Pediatrics
title Transient neonatal diabetes mellitus with macroglossia diagnosed by methylation specific PCR (MS-PCR)
title_full Transient neonatal diabetes mellitus with macroglossia diagnosed by methylation specific PCR (MS-PCR)
title_fullStr Transient neonatal diabetes mellitus with macroglossia diagnosed by methylation specific PCR (MS-PCR)
title_full_unstemmed Transient neonatal diabetes mellitus with macroglossia diagnosed by methylation specific PCR (MS-PCR)
title_short Transient neonatal diabetes mellitus with macroglossia diagnosed by methylation specific PCR (MS-PCR)
title_sort transient neonatal diabetes mellitus with macroglossia diagnosed by methylation specific pcr ms pcr
url http://www.kjp.or.kr/upload/2010530322-20100443174543.PDF
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