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  • Title: Urinary albumin excretion after donor nephrectomy.
    Author: Bertolatus JA, Friedlander MA, Scheidt C, Hunsicker LG.
    Journal: Am J Kidney Dis; 1985 Mar; 5(3):165-9. PubMed ID: 3883759.
    Abstract:
    Surgical ablation of renal tissue in animals leads to compensatory hyperfiltration, hypertension, and focal glomerular sclerosis in remnant nephrons, in association with albuminuria; the detection of slightly elevated urinary albumin (microalbuminuria) has been shown to predict later, more severe renal disease in diabetics. To determine whether unilateral nephrectomy in humans initiates a similar pathogenetic sequence, we measured urinary albumin excretion (UalbV), total protein excretion (UprotV), creatinine clearance (Ccreat) and blood pressure in 22 transplant donors before and at intervals up to 3 years after donor nephrectomy. Urinary albumin was determined using a sensitive enzyme immunoassay (ELISA). Mean Ccreat fell on average to 68% of prenephrectomy values at all times after nephrectomy, indicating a rise of 33% in average single nephron filtration rate. Mean absolute and fractional albumin excretion rates and UprotV values were transiently elevated one week postnephrectomy, but returned thereafter to values not significantly different from prenephrectomy values. Blood pressure rose slightly, but significantly, with time after nephrectomy. Average increases of 10 mm and 5 mm in systolic and diastolic pressures, respectively, were noted by 2 years after surgery. In this study, there was no evidence of glomerular injury from hyperfiltration in the 3 years following donor nephrectomy.
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