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  • Title: Glomerular function and morphology after renal mass reduction in dogs.
    Author: Bourgoignie JJ, Gavellas G, Martinez E, Pardo V.
    Journal: J Lab Clin Med; 1987 Apr; 109(4):380-8. PubMed ID: 3819576.
    Abstract:
    To determine whether the proteinuria, glomerular sclerosis, and decline in glomerular filtration rate (GFR) described in rodents after renal mass reduction develop in another species, 24-hour proteinuria, glomerular structure, and fasting and postfeeding GFR were examined in dogs subjected to seven-eighths reduction in renal mass. All dogs were fed a diet containing 26% protein. Six dogs with a GFR less than 10 ml/min (8% to 17% of control two-kidney GFR) were killed within 6 months after renal mass reduction. Twenty-four-hour urinary protein excretion was modestly although definitely increased (236 +/- 26 mg/24 hr, P less than 0.01). All remnant kidneys demonstrated structural changes of mesangial hyperplasia or focal glomerular sclerosis. Ten dogs with a remnant kidney and early GFRs 16% to 39% of control values were followed for 18 to 39 months. In seven dogs, GFR showed little tendency to decrease with time. In one of them, proteinuria was 106 mg/24 hr with normal-appearing glomeruli at 14 months. In three dogs, proteinuria was progressive, averaging about 1 gm/24 hr at 18 months and 2 gm/24 hr at 24 to 34 months; glomerular pathologic findings progressed from focal mesangial hyperplasia or focal glomerular sclerosis at 8 to 16 months to focal and segmental sclerosis or diffuse glomerular obsolescence at 25 to 34 months; and fasting GFR progressively declined starting at 21 to 24 months after renal mass reduction.(ABSTRACT TRUNCATED AT 250 WORDS)
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