Abstract:
:Alkaptonuria (AKU) is a rare disease correlated with deficiency of the enzyme homogentisate 1,2 dioxygenase, which causes homogentisic acid (HGA) accumulation. HGA is subjected to oxidation/polymerization reactions, leading to the production of a peculiar melanin-like pigmentation (ochronosis) after chronic inflammation, which is considered as a triggering event for the generation of oxidative stress. Clinical manifestations of AKU are urine darkening, sclera pigmentation, early severe osteoarthropathy, and cardiovascular and renal complication. Despite major clinical manifestations of AKU being observed in the bones and skeleton, the molecular and functional parameters are so far unknown in AKU. In the present study, we used human osteoblasts supplemented with HGA as a AKU cellular model. We observed marked oxidative stress, and for the first time, we were able to correlate HGA deposition with an impairment in the Wnt/β-catenin signaling pathway, opening a range of possible therapeutic strategies for a disease still lacking a known cure.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Schiavone ML,Millucci L,Bernardini G,Giustarini D,Rossi R,Marzocchi B,Santucci Adoi
10.1002/jcp.29575subject
Has Abstractpub_date
2020-10-01 00:00:00pages
6808-6816issue
10eissn
0021-9541issn
1097-4652journal_volume
235pub_type
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