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Figure 1. A baby boy was found to have familial hypercholesterolemia at the age of six months. His parents also had hypercholesterolemia. Seven and a half years later, studies of the activity of low-density lipoprotein (LDL) receptors in proliferating lymphocytes indicated that the parents were heterozygous and the child was homozygous for LDL-receptor deficiency. The child's serum cholesterol concentration ranged from 850 to 1000 mg per deciliter (22 to 26 mmol per liter), and he had cutaneous xanthomas on his knees (as shown), elbows, and interdigital folds. Because the hypercholesterolemia was refractory to treatment with lovastatin and cholestyramine, the . . . [Full Text of this Article] |
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