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  • Title: Probucol combined with valsartan in immunoglobulin A nephropathy: a multi-centre, open labelled, randomized controlled study.
    Author: Ye Z, Zhang L, Xu L, Shi W, Hu H, Shi X, Zhong W, Hou S, Yan H, Zhang B, Xia Y, Wang W, Feng Z, Wang L, Liang Y.
    Journal: Nephrology (Carlton); 2014 Jan; 19(1):40-6. PubMed ID: 24191893.
    Abstract:
    AIM: Angiotensin receptor antagonists (ARBs) and anti-oxidants reduce urinary protein excretion and delay progression of immunoglobulin A (IgA) nephropathy. We investigated the efficacy and safety of probucol (an anti-oxidant) combined with valsartan (an ARB) on the progression of IgA nephropathy. METHODS: Patients with IgA nephropathy (n = 69) were recruited from five centres and randomly assigned to a treatment group (750 mg/day probucol plus 160 mg/day valsartan) or a control group (160 mg/day valsartan) and were followed for 3 years. RESULTS: At baseline, the two groups in any measured clinical information were comparable. The primary endpoint (doubling serum creatinine) showed no significant difference between the two groups during 3-year follow-up. The secondary endpoint (50% reduction in 24-h urinary protein) occurred in 23 patients in the treatment group and 20 patients in the control group. The time to the secondary end-point was shorter in the treatment group than the control group (8.13 months vs 19.63 months, P = 0.019). However, at the 3-year follow-up, the 24-h urinary protein levels were not significantly different from the baseline levels (P = 0.99 and P = 0.66, respectively). At the 1-year follow-up, plasma cholesterol in the treatment group was markedly lower than in the control group (4.12 ± 1.28 vs 5.03 ± 1.01, P = 0.02). CONCLUSION: Kidney function remained stable and there was no significant difference in two group patients. Probucol combined with valsartan led to a more rapid decrease of 24-h urinary protein excretion than valsartan alone. However, the long-term effect needs further investigation.
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