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- W2130995172 abstract "Objectives. Alkaptonuria (AKU) is a rare genetic disease associated with deficient homogentisate 1,2-dioxygenase activity in the liver. This leads to the accumulation of homogentisic acid (HGA) and its oxidized/polymerized products in connective tissues, which in turn become characterized by the presence of melanin-like pigments (ochronosis). Since at present, further studies are necessary to support the use of drugs for the treatment of AKU, we investigated the effects of various anti-oxidants in counteracting melanin-like pigmentation and oxidative stress related to HGA and its metabolites. Methods. We set up an in vitro model using human serum treated with 0.33 mM HGA and tested the anti-oxidants ascorbic acid, N-acetylcysteine, phytic acid (PHY), taurine (TAU), ferulic acid (FER) and lipoic acid (LIP) for their ability to prevent or delay the production of melanin-like pigments, as well as to reduce oxidative post-translational modifications of proteins. Monitoring of intrinsic fluorescence of HGA-induced melanin-like pigments was used to evaluate the efficacy of compounds. Results. Our model allowed us to prove efficacy especially for PHY, TAU, LIP and FER in counteracting the production of HGA-induced melanin-like pigments and protein oxidation induced by HGA and its metabolites. Conclusions. Our model allows the opening of new anti-oxidant therapeutic strategies to treat alkaptonuric ochronosis." @default.
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- W2130995172 date "2010-07-02" @default.
- W2130995172 modified "2023-10-18" @default.
- W2130995172 title "Evaluation of anti-oxidant treatments in an in vitro model of alkaptonuric ochronosis" @default.
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- W2130995172 doi "https://doi.org/10.1093/rheumatology/keq175" @default.
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