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  • Title: Prevention and reversal of diabetic nephropathy in db/db mice treated with alagebrium (ALT-711).
    Author: Peppa M, Brem H, Cai W, Zhang JG, Basgen J, Li Z, Vlassara H, Uribarri J.
    Journal: Am J Nephrol; 2006; 26(5):430-6. PubMed ID: 16974073.
    Abstract:
    BACKGROUND: Alagebrium (ALT-711) has been shown to improve renal dysfunction in animal models of diabetes. METHODS: To test its effects in diabetic nephropathy (DN), ALT-711 was administered (1 mg/kg daily i.p.) to 9-week-old female db/db mice (n = 15, group A1) for 3 weeks and to 3-month-old (n = 15, group A2), 7-month-old (n = 7, group A3), and 12-month-old (n = 5, group A4) female db/db mice for 12 weeks, while a similar number of diabetic and nondiabetic mice were used as controls. The epsilonN-carboxymethyllysine (CML) levels in serum, urine, skin, and kidney tissue were measured by enzyme-linked immunosorbent assay. The renal morphometric parameters were assessed by electron and light microscopy. RESULTS: By the 3rd week of treatment, the serum CML level decreased by 41%, and the urinary CML concentration increased by 138% from baseline, while the urinary albumin/creatinine ratio was lower (p < 0.05) in diabetic and nondiabetic group A1 mice. After 3 months of treatment, serum, skin, and kidney CML levels and urinary albumin/creatinine ratio were lower (p < 0.05) and the urinary CML levels higher (p < 0.05) in treated group A2, A3, and A4 animals compared with groups which received phosphate-buffered saline, with a similar pattern observed in nondiabetic mice. The renal morphological parameters characteristic of DN decreased in treated compared with untreated mice. CONCLUSION: Alagebrium may prevent, delay, and/or reverse established DN in db/db mice by reducing the systemic advanced glycation end product pools and facilitating the urinary excretion of advanced glycation end products.
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