Stephanie L Harrison1, Anton J M de Craen2, Ngaire Kerse3, Ruth Teh3, Antoneta Granic4,5, Karen Davies4,5, Keith A Wesnes6,7, Wendy P J den Elzen8,9, Jacobijn Gussekloo9, Thomas B L Kirkwood10, Louise Robinson1,4, Carol Jagger4, Mario Siervo4,11, Blossom C M Stephan1,4. 1. Institute of Health and Society, Newcastle University, Newcastle upon Tyne, United Kingdom. 2. Department of Gerontology and Geriatrics, Leiden University Medical Center, Leiden, the Netherlands. 3. Department of General Practice and Primary Health Care, School of Population Health, University of Auckland, Auckland, New Zealand. 4. Institute of Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, United Kingdom. 5. Ageing, Geriatrics and Epidemiology, Institute of Neuroscience, National Institute for Health Research Newcastle Biomedical Research Centre in Ageing and Chronic Disease, Newcastle University and Newcastle upon Tyne NHS Foundation Trust, Newcastle upon Tyne, United Kingdom. 6. Wesnes Cognition Ltd, Streatley on Thames, United Kingdom. 7. Department of Psychology, Northumbria University, Newcastle upon Tyne, United Kingdom. 8. Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, The Netherlands. 9. Department of Public Health and Primary Care, Leiden University Medical Center, Leiden, the Netherlands. 10. Institute of Cell and Molecular Biosciences, Institute of Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, United Kingdom. 11. Institute of Cellular Medicine, Institute of Ageing, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, United Kingdom.
Abstract
OBJECTIVES: To examine the Framingham Stroke Risk Profile (FSRP); the Cardiovascular Risk Factors, Aging, and Incidence of Dementia (CAIDE) risk score, and oxi-inflammatory load (cumulative risk score of three blood biomarkers-homocysteine, interleukin-6, C-reactive protein) for associations with cognitive decline using three cohort studies of very old adults and to examine whether incorporating these biomarkers with the risk scores can affect the association with cognitive decline. DESIGN: Three longitudinal, population-based cohort studies. SETTING: Newcastle-upon-Tyne, United Kingdom; Leiden, the Netherlands; and Lakes and Bay of Plenty District Health Board areas, New Zealand. PARTICIPANTS: Newcastle 85+ Study participants (n = 616), Leiden 85-plus Study participants (n = 444), and Life and Living in Advanced Age, a Cohort Study in New Zealand (LiLACS NZ Study) participants (n = 396). MEASUREMENTS: FSRP, CAIDE risk score, oxi-inflammatory load, FSRP incorporating oxi-inflammatory load, and CAIDE risk score incorporating oxi-inflammatory load. Oxi-inflammatory load could be calculated only in the Newcastle 85+ and the Leiden 85-plus studies. Measures of global cognitive function were available for all three data sets. Domain-specific measures were available for the Newcastle 85+ and the Leiden 85-plus studies. RESULTS: Meta-analysis of pooled results showed greater risk of incident global cognitive impairment with higher FSRP (hazard ratio (HR) = 1.46, 95% confidence interval (CI) = 1.08-1.98), CAIDE (HR = 1.53, 95% CI = 1.09-2.14), and oxi-inflammatory load (HR = 1.73, 95% CI = 1.04-2.88) scores. Adding oxi-inflammatory load to the risk scores increased the risk of cognitive impairment for the FSRP (HR = 1.65, 95% CI = 1.17-2.33) and the CAIDE model (HR = 1.93, 95% CI = 1.39-2.67). CONCLUSION: Adding oxi-inflammatory load to cardiovascular risk scores may be useful for determining risk of cognitive impairment in very old adults.
OBJECTIVES: To examine the Framingham Stroke Risk Profile (FSRP); the Cardiovascular Risk Factors, Aging, and Incidence of Dementia (CAIDE) risk score, and oxi-inflammatory load (cumulative risk score of three blood biomarkers-homocysteine, interleukin-6, C-reactive protein) for associations with cognitive decline using three cohort studies of very old adults and to examine whether incorporating these biomarkers with the risk scores can affect the association with cognitive decline. DESIGN: Three longitudinal, population-based cohort studies. SETTING: Newcastle-upon-Tyne, United Kingdom; Leiden, the Netherlands; and Lakes and Bay of Plenty District Health Board areas, New Zealand. PARTICIPANTS: Newcastle 85+ Study participants (n = 616), Leiden 85-plus Study participants (n = 444), and Life and Living in Advanced Age, a Cohort Study in New Zealand (LiLACS NZ Study) participants (n = 396). MEASUREMENTS: FSRP, CAIDE risk score, oxi-inflammatory load, FSRP incorporating oxi-inflammatory load, and CAIDE risk score incorporating oxi-inflammatory load. Oxi-inflammatory load could be calculated only in the Newcastle 85+ and the Leiden 85-plus studies. Measures of global cognitive function were available for all three data sets. Domain-specific measures were available for the Newcastle 85+ and the Leiden 85-plus studies. RESULTS: Meta-analysis of pooled results showed greater risk of incident global cognitive impairment with higher FSRP (hazard ratio (HR) = 1.46, 95% confidence interval (CI) = 1.08-1.98), CAIDE (HR = 1.53, 95% CI = 1.09-2.14), and oxi-inflammatory load (HR = 1.73, 95% CI = 1.04-2.88) scores. Adding oxi-inflammatory load to the risk scores increased the risk of cognitive impairment for the FSRP (HR = 1.65, 95% CI = 1.17-2.33) and the CAIDE model (HR = 1.93, 95% CI = 1.39-2.67). CONCLUSION: Adding oxi-inflammatory load to cardiovascular risk scores may be useful for determining risk of cognitive impairment in very old adults.
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