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Goozee K, Chatterjee P, James I, Shen K, Sohrabi HR, Asih PR, Dave P, ManYan C, Taddei K, Ayton SJ, Garg ML, Kwok JB, Bush AI, Chung R, Magnussen JS, Martins RN. Elevated plasma ferritin in elderly individuals with high neocortical amyloid-β load. Mol Psychiatry 2018; 23:1807-1812. [PMID: 28696433 DOI: 10.1038/mp.2017.146] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 05/14/2017] [Accepted: 05/26/2017] [Indexed: 12/14/2022]
Abstract
Ferritin, an iron storage and regulation protein, has been associated with Alzheimer's disease (AD); however, it has not been investigated in preclinical AD, detected by neocortical amyloid-β load (NAL), before cognitive impairment. Cross-sectional analyses were carried out for plasma and serum ferritin in participants in the Kerr Anglican Retirement Village Initiative in Aging Health cohort. Subjects were aged 65-90 years and were categorized into high and low NAL groups via positron emission tomography using a standard uptake value ratio cutoff=1.35. Ferritin was significantly elevated in participants with high NAL compared with those with low NAL, adjusted for covariates age, sex, apolipoprotein E ɛ4 carriage and levels of C-reactive protein (an inflammation marker). Ferritin was also observed to correlate positively with NAL. A receiver operating characteristic curve based on a logistic regression of the same covariates, the base model, distinguished high from low NAL (area under the curve (AUC)=0.766), but was outperformed when plasma ferritin was added to the base model (AUC=0.810), such that at 75% sensitivity, the specificity increased from 62 to 71% on adding ferritin to the base model, indicating that ferritin is a statistically significant additional predictor of NAL over and above the base model. However, ferritin's contribution alone is relatively minor compared with the base model. The current findings suggest that impaired iron mobilization is an early event in AD pathogenesis. Observations from the present study highlight ferritin's potential to contribute to a blood biomarker panel for preclinical AD.
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Affiliation(s)
- K Goozee
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,Anglicare, Sydney, NSW, Australia.,School of Psychiatry and Clinical Neurosciences, University of Western Australia, Perth, WA, Australia.,School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia.,McCusker Alzheimer Research Foundation, Perth, WA, Australia.,KaRa Institute of Neurological Disease, Sydney, NSW, Australia.,The Cooperative Research Centre for Mental Health, Carlton, VIC, Australia
| | - P Chatterjee
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia.,KaRa Institute of Neurological Disease, Sydney, NSW, Australia
| | - I James
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, WA, Australia
| | - K Shen
- Australian eHealth Research Centre, CSIRO, Floreat, WA, Australia
| | - H R Sohrabi
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia.,McCusker Alzheimer Research Foundation, Perth, WA, Australia.,The Cooperative Research Centre for Mental Health, Carlton, VIC, Australia
| | - P R Asih
- KaRa Institute of Neurological Disease, Sydney, NSW, Australia.,School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia
| | - P Dave
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia.,Anglicare, Sydney, NSW, Australia
| | - C ManYan
- Anglicare, Sydney, NSW, Australia
| | - K Taddei
- School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia.,McCusker Alzheimer Research Foundation, Perth, WA, Australia
| | - S J Ayton
- Florey Department of Neuroscience and Mental Health, University of Melbourne University, Melbourne, VIC, Australia
| | - M L Garg
- Nutraceuticals Research Program, School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - J B Kwok
- School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia.,Neuroscience Research Australia, Sydney, NSW, Australia
| | - A I Bush
- The Cooperative Research Centre for Mental Health, Carlton, VIC, Australia.,Florey Department of Neuroscience and Mental Health, University of Melbourne University, Melbourne, VIC, Australia
| | - R Chung
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia
| | - J S Magnussen
- Department of Clinical Medicine, Macquarie University, Sydney, NSW, Australia
| | - R N Martins
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW, Australia. .,School of Psychiatry and Clinical Neurosciences, University of Western Australia, Perth, WA, Australia. .,School of Medical Health and Sciences, Edith Cowan University, Perth, WA, Australia. .,McCusker Alzheimer Research Foundation, Perth, WA, Australia. .,KaRa Institute of Neurological Disease, Sydney, NSW, Australia. .,The Cooperative Research Centre for Mental Health, Carlton, VIC, Australia.
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