H. Vergnes et al., ALKALINE-PHOSPHATASE AND PHOSPHOTYROSINE PHOSPHATASE-ACTIVITIES OF CULTURED AMNIOTIC CELLS WITH TRISOMY-18, Enzyme, 46(6), 1992, pp. 284-286
In cultured amniotic cells from fetuses with Edward's syndrome (trisom
y 18), the activities of two protein phosphatases, alkaline phosphatas
e and phosphotyrosine phosphatase, were measured. Comparison with norm
al fetal cells showed a different behavior for each enzyme. Alkaline p
hosphatase was significantly lowered while phosphotyrosine phosphatase
remained at normal levels. The interest of these enzyme assays in the
screening procedure of this severe chromosome defect is discussed.