Figure 710

Renal glycosphingolipid content modulates renal tubular phosphate reabsorption. In rats treated with dexamethasone (DEX) and in rats fed a potassium-deficient diet, an inverse correlation exists between brush border membrane (BBM) glucosylceramide (GluCer)—and ganglioside GM3, content and Na-Pi cotransport activity. Treatment of rats with a glucosylceramide synthase inhibitor PDMP lowers BBM glucosylceramide content (A) and increases Na-Pi cotransport activity (B) [16].

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