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Phosphatidate phosphatase is an important enzyme in glycerolipid biosynthesis, but difficult to purify. A purified preparation of N-ethylmaleimide-sensitive phosphatidate phosphatase from the yeast Saccharomyces cerevisiae was obtained by a five-step protocol, using chromatography on DE-53/DEAE FF, Affi-Gel Blue, hydroxyapatite, Mono-Q, and Superdex 200. A protease-deflcient yeast strain gave preparations...
Hypercholesterolemia is a consistent feature of the nephrotic syndrome. However, the mechanisms underlying this perturbation are unclear. In the present work, we have investigated different factors that influence hepatic cholesterol metabolism using the nephrotic rat as a model. The induction of nephrosis resulted in a severe and sustained hypercholesterolemia. However, no effect on the rate-limiting...
The nephrotic syndrome is associated with disturbances in plasma lipid pattern and metabolism. However, the reason for these perturbations is poorly understood. In the present study, we have investigated hepatic triglyceride metabolism in puromycin aminonucleoside-induced nephrotic syndrome in rats. Nephrotic rats displayed a 70% increase in hepatic triglyceride levels compared to controls (16.9±1...
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