RESUMEN
Fifteen patients with nephrotic syndrome (9 aged below 30 years), 6 patients with chronic renal failure and 26 healthy males (14 below 30 years) were studied. After estimating the basal serum levels of total cholesterol (STC), triglycerides (STG), high density lipoprotein (HDL) and low density lipoprotein (LDL), the patients were given a high cholesterol and high fat breakfast (containing 32 g fat and 527 mg cholesterol) for 7 days. Lipoprotein levels were again estimated on days 8 and 16. In the basal state, all patients with nephrotic syndrome had markedly elevated levels of STC and LDL. In patients aged below 30 years, STG and VLDL levels were also elevated, while HDL levels were similar in both the groups in comparison to their respective age group controls. In patients with renal failure, basal levels of all lipoproteins were similar to levels in controls. After the high cholesterol fat diet, there was an insignificant rise in all lipoprotein values in patients with nephrotic syndrome and renal failure. However, HDL levels rose significantly in patients with nephrotic syndrome aged below 30 years. Patients with nephrotic syndrome and chronic renal failure can safely be given high cholesterol and high fat diet despite abnormalities in lipid lipoprotein metabolism.