ATP7B variants as modulators of copper dyshomeostasis in Alzheimer's disease

Paolo Maria Rossini, Rosanna Squitti, Renato Polimanti, Mariacristina Siotto, Serena Bucossi, Mariacarla Ventriglia, Stefania Mariani, Fabrizio Vernieri, Federica Scrascia, Laura Trotta

Risultato della ricerca: Contributo in rivistaArticolo in rivista

41 Citazioni (Scopus)

Abstract

To understand the role of the key copper-regulating gene, ATP7B, in copper dyshomeostasis associated with Alzheimer's disease (AD), we analyzed the serum levels of copper, ceruloplasmin and 'free' (i.e., non-ceruloplasmin bound) copper in 399 patients with AD and 303 elderly healthy controls. We also performed analyses of informative variants of ATP7B. AD patients had higher levels of copper and free copper than controls. Individuals with free copper levels higher than 1.6 μmol/L (the upper value of the normal reference range) were more frequent among cases (p < 0.001). Among these individuals, those who were carriers of the ATP7B variants accounted for a large proportion of the free copper levels, specifically in the AD group (p < 0.01). Our results suggest the existence of a 'copper dysfunction' phenotype of sporadic AD which has a genetic basis. They also suggest that free copper is a risk factor for this disorder, modulating additional pathways leading to the disease cascade.
Lingua originaleEnglish
pagine (da-a)515-522
Numero di pagine8
RivistaNeuroMolecular Medicine
Volume15
DOI
Stato di pubblicazionePubblicato - 2013

Keywords

  • inglese

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