Prenatal diagnosis of glycogen storage disease Ia by screening for hot spot mutations in combination with the 1176 nucleotide polymorphism linkage analysis / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 44-48, 2005.
Article
in Chinese
| WPRIM
| ID: wpr-321163
ABSTRACT
<p><b>OBJECTIVE</b>To develop and evaluate a simple, fast and accurate prenatal diagnosis method for glycogen storage disease Ia (GSD Ia) in Chinese.</p><p><b>METHODS</b>This study involved 3 unrelated families. Genomic DNA samples were extracted from the blood of three GSD Ia patients and their parents, from the amniocytes of 3 fetuses and the blood of 2 newborns. By the way of restriction enzyme analysis, the screening for 727G-->T and R83H mutations of glucose-6-phosphatase gene was carried out in conjunction with 1176 nucleotide polymorphism linkage analysis so as to make the gene and prenatal diagnosis of 3 GSD Ia families. Direct DNA sequencing of the corresponding PCR products was used to confirm the unveiled mutations and 1176 nucleotide polymorphism.</p><p><b>RESULTS</b>Three probands were homozygotes for the 727G-->T mutation and their parents were heterozygotes for this mutation. The fetuses of family 1 and 3 were heterozygotes for the 727G-->T mutation, whereas the fetus of family 2 did not carry this mutation. The 1176 nucleotide polymorphisms of 3 fetuses were different from those of the corresponding probands. The prenatal diagnoses of family 1 and 2 were confirmed by the postnatal biochemical and molecular studies.</p><p><b>CONCLUSION</b>These findings suggest that the screening for 727G-->T and R83H mutations in conjunction with the 1176 polymorphism linkage analysis be a simple, fast and accurate method for gene and prenatal diagnosis of GSD Ia in Chinese.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pedigree
/
Prenatal Diagnosis
/
Glycogen Storage Disease Type I
/
Polymerase Chain Reaction
/
Family Health
/
Glucose-6-Phosphatase
/
Polymorphism, Single Nucleotide
/
Diagnosis
/
Genetics
/
Genetic Linkage
Type of study:
Diagnostic study
/
Screening study
Limits:
Adult
/
Child
/
Child, preschool
/
Female
/
Humans
/
Male
/
Pregnancy
Language:
Chinese
Journal:
Chinese Journal of Medical Genetics
Year:
2005
Type:
Article
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