Variation in plasma leptin concentrations after unilateral nephrectomy.

The temporal changes in plasma leptin concentrations were studied in healthy adults who underwent unilateral nephrectomy. Another group who underwent abdominal surgery for repair of aneurysm or to relieve arterial stenosis, was also studied. Plasma leptin concentrations increased to 230% +/- 74% of prenephrectomy levels at 8 to 16 hours after surgery and then generally declined.