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Meta-analysis of serum non-ceruloplasmin copper in Alzheimer's disease.

Abstract

The fraction of copper not bound to ceruloplasmin seems altered in Alzheimer's disease (AD). We have addressed this notion evaluating all the studies carried out from 1996 until March 2013 by means of meta-analysis. We performed our analysis on diverse indices evaluating the relationship between copper and ceruloplasmin in general circulation, namely 'Non-Cp copper', '% Non-Cp copper', and 'Adjusted copper'. For Non-Cp copper and % Non-Cp copper, the correct stoichiometry between copper and ceruloplasmin (6-8 atoms of copper for each ceruloplasmin molecule) in healthy controls has been adopted as criterion for the study to be included in the meta-analysis evaluating data with the canonic Walshe's formula for Non-Cp copper. Copper to ceruloplasmin ratio (Cu:Cp), which is an internal quality control check for ceruloplasmin calibration, was used as an index of the actual stoichiometry in the specimens. Adjusted (Adj-Cp) copper, even though less reliable, was calculated, allowing the evaluation of all the studies selected. An additional meta-analysis of systemic total copper was re-calculated accounting for all the studies carried out from 1983 to March 2013. Ten studies were analyzed in the meta-analysis for Non-Cp copper and % Non-Cp copper reaching a pooled total of 599 AD subjects and 867 controls. For Adj-Cp copper, 14 studies were analyzed with a pooled total of 879 AD and 1,712 controls. 27 studies were considered for systemic total copper meta-analysis, with a pooled total of 1,393 AD and 2,159 controls. All the copper indices analyzed were significantly higher in AD subjects compared to healthy controls.

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  • Authors+Show Affiliations

    ,

    Department of Neuroscience, AFaR - Fatebenefratelli Hospital "San Giovanni Calibita", Rome, Italy Laboratory of Neurodegeneration, IRCSS San Raffaele Pisana, Rome, Italy.

    , , , , , ,

    Source

    MeSH

    Alzheimer Disease
    Biomarkers
    Ceruloplasmin
    Copper
    Humans
    Up-Regulation

    Pub Type(s)

    Journal Article
    Meta-Analysis
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    24072069

    Citation

    Squitti, Rosanna, et al. "Meta-analysis of Serum Non-ceruloplasmin Copper in Alzheimer's Disease." Journal of Alzheimer's Disease : JAD, vol. 38, no. 4, 2014, pp. 809-22.
    Squitti R, Simonelli I, Ventriglia M, et al. Meta-analysis of serum non-ceruloplasmin copper in Alzheimer's disease. J Alzheimers Dis. 2014;38(4):809-22.
    Squitti, R., Simonelli, I., Ventriglia, M., Siotto, M., Pasqualetti, P., Rembach, A., ... Bush, A. I. (2014). Meta-analysis of serum non-ceruloplasmin copper in Alzheimer's disease. Journal of Alzheimer's Disease : JAD, 38(4), pp. 809-22. doi:10.3233/JAD-131247.
    Squitti R, et al. Meta-analysis of Serum Non-ceruloplasmin Copper in Alzheimer's Disease. J Alzheimers Dis. 2014;38(4):809-22. PubMed PMID: 24072069.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Meta-analysis of serum non-ceruloplasmin copper in Alzheimer's disease. AU - Squitti,Rosanna, AU - Simonelli,Ilaria, AU - Ventriglia,Mariacarla, AU - Siotto,Mariacristina, AU - Pasqualetti,Patrizio, AU - Rembach,Alan, AU - Doecke,James, AU - Bush,Ashley I, PY - 2013/9/28/entrez PY - 2013/9/28/pubmed PY - 2014/8/19/medline KW - Alzheimer's disease KW - ceruloplasmin KW - copper KW - metal KW - plasma KW - serum SP - 809 EP - 22 JF - Journal of Alzheimer's disease : JAD JO - J. Alzheimers Dis. VL - 38 IS - 4 N2 - The fraction of copper not bound to ceruloplasmin seems altered in Alzheimer's disease (AD). We have addressed this notion evaluating all the studies carried out from 1996 until March 2013 by means of meta-analysis. We performed our analysis on diverse indices evaluating the relationship between copper and ceruloplasmin in general circulation, namely 'Non-Cp copper', '% Non-Cp copper', and 'Adjusted copper'. For Non-Cp copper and % Non-Cp copper, the correct stoichiometry between copper and ceruloplasmin (6-8 atoms of copper for each ceruloplasmin molecule) in healthy controls has been adopted as criterion for the study to be included in the meta-analysis evaluating data with the canonic Walshe's formula for Non-Cp copper. Copper to ceruloplasmin ratio (Cu:Cp), which is an internal quality control check for ceruloplasmin calibration, was used as an index of the actual stoichiometry in the specimens. Adjusted (Adj-Cp) copper, even though less reliable, was calculated, allowing the evaluation of all the studies selected. An additional meta-analysis of systemic total copper was re-calculated accounting for all the studies carried out from 1983 to March 2013. Ten studies were analyzed in the meta-analysis for Non-Cp copper and % Non-Cp copper reaching a pooled total of 599 AD subjects and 867 controls. For Adj-Cp copper, 14 studies were analyzed with a pooled total of 879 AD and 1,712 controls. 27 studies were considered for systemic total copper meta-analysis, with a pooled total of 1,393 AD and 2,159 controls. All the copper indices analyzed were significantly higher in AD subjects compared to healthy controls. SN - 1875-8908 UR - https://www.unboundmedicine.com/medline/citation/24072069/Meta_analysis_of_serum_non_ceruloplasmin_copper_in_Alzheimer's_disease_ L2 - https://content.iospress.com/openurl?genre=article&id=doi:10.3233/JAD-131247 DB - PRIME DP - Unbound Medicine ER -