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Erythrocyte antioxidant system in Down syndrome
G Gerli1, L Zenoni, G F Locatelli
1Clinica Medica V, Ospedale San Paolo, Milan, Italy.
American Journal of Medical Genetics. Supplement
|January 1, 1990
Summary
Individuals with Down syndrome (DS) exhibit an unbalanced antioxidant system in erythrocytes. Superoxide dismutase (SOD-1) and glutathione peroxidase (GSH-Px) were elevated, suggesting altered protection against oxidative stress in DS.
Area of Science:
- Biochemistry
- Genetics
- Cell Biology
Background:
- Down syndrome (DS) is associated with increased oxidative damage.
- Superoxide dismutase (SOD-1) is implicated in the pathogenesis of DS.
Purpose of the Study:
- To investigate the antioxidant system in erythrocytes of adults with Down syndrome.
- To evaluate the protective mechanisms against oxidant stress in DS erythrocytes.
Main Methods:
- Analysis of erythrocyte antioxidant enzymes: SOD-1, catalase, glutathione peroxidase (GSH-Px).
- Measurement of reduced glutathione (GSH) levels.
- Comparison of antioxidant parameters between DS adults and controls (implied).
Main Results:
- Significantly increased SOD-1 activity in DS erythrocytes.
- Significantly increased GSH-Px activity in DS erythrocytes.
- Normal catalase and GSH levels observed in DS erythrocytes.
Conclusions:
- Erythrocytes in Down syndrome adults present an unbalanced antioxidant system.
- Altered antioxidant enzyme levels may contribute to the clinical manifestations of Down syndrome.