Types of enzymatic overdosing in trisomy 21: Erythrocytic superoxide dismutase-AJ and phosphoglucomutase
✍ Scribed by R. Prişcu; S. Sichitiu
- Publisher
- Springer
- Year
- 1975
- Tongue
- English
- Weight
- 401 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0340-6717
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✦ Synopsis
A comparative study was carried out on the hemolysates of 6 trisomic 21 and 6 normal subjects, by electrophoresis in starch gel, determining by a combined staining method both SOD-A (former IPO-dimer) and PGM activity. The enzymes were found statistically to be in a hyperactive status, the ratio of trisomic to normal values being approximately equalt to 1.4. SOD-A supraactivation is the effect of a genic dose, as demonstrated in earlier works (Sichitiu, 1973; Sichitiu et al., 1974; Sinet et al., 1974), whereas PGM hyperactivity appears to be modified secondarily, the same as the activity of other cellular enzymes in Down's disease.