Rodríguez-Illana F, Magaña F, Mariscal A, Mancilla-Urrea E, Ávila-Casado MC, Rodríguez-Castellanos F

Language: Spanish
References: 11
Page: 406-411
PDF size: 58.80 Kb.

ABSTRACT

Background. The renal manifestations of IgA nephropathy are wide, including patients with asymptomatic disease. The probability of developing advanced renal disease after 20 years of diagnosis varies. The prevalence of mesangial deposits of IgA in otherwise healthy people has been studied previously and there are only 2 reports in which the diagnosis is made by time-zero renal biopsy (T0-RBx). Material and methods. We compared clinical characteristics (baseline and at followup) of renal donors with IgA nephropathy diagnosed by T0-RBx compared with 20 donors with normal T0-RBx. Results. From 1999 to 2006 151 T0-RBx were analyzed. Of these 10 cases (6.62%) had IgA nephropathy. There were two patients with stage II and 8 with stage I according to HASS classification of IgA nephropathy. All donors in both groups (n = 30) had normal urinary tests, however urinary protein excretion was significantly higher in the IgA nephropathy group compared with the normal group from baseline to the end of follow-up (three years). The glomerular filtration rate at three years of follow-up was significantly higher in the normal group (80 ± 14 vs. 65 ± 8 mL/min, p = 0.001). Conclusions. Donors with IgA nephropathy on T0-RBx had no urinary abnormalities during pre donation screening. At three years of follow-up patients with IgA nephropathy showed a greater loss of renal function as well as increased urinary protein excretion.

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