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Possibility of prenatal diagnosis of hereditary triose phosphate isomerase deficiency
Author(s) -
Rosa R.,
Prehu M. O.,
Calvin M. C.,
Daffos F.,
Forestier F.
Publication year - 1986
Publication title -
prenatal diagnosis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.956
H-Index - 97
eISSN - 1097-0223
pISSN - 0197-3851
DOI - 10.1002/pd.1970060312
Subject(s) - triosephosphate isomerase , fetus , prenatal diagnosis , umbilical cord , cord blood , medicine , endocrinology , pregnancy , andrology , chemistry , biology , biochemistry , enzyme , immunology , genetics
Prenatal diagnosis has been performed on umbilical cord blood of an 18 weeks fetus of heterozygous triosephosphate isomerase (TPI) deficient parents. After excluding maternal blood contamination, TPI activity was measured and found to be 60 per cent of the normal mean whereas the value of glucose‐6‐phosphate dehydrogenase activity was in the normal range of fetal blood. In addition, the analysis of the characteristics of fetal TPI, i.e. K m measurements for glyceraldehyde‐3‐phosphate, heat stability tests and electrophoretic studies, did not show any evidence of a special form of TPI in fetal blood. These results were consistent with the heterozygous state and were confirmed at birth.