Joint effect of mid- and late-life blood pressure on the brain: The AGES-Reykjavik Study

Majon Muller, Sigurdur Sigurdsson, Olafur Kjartansson, Thor Aspelund, Oscar L. Lopez, Palmi V. Jonnson, Tamara B. Harris, Mark Van Buchem, Vilmundur Gudnason, Lenore J. Launer

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Objective: We hypothesized that in participants with a history of hypertension, lower late-life blood pressure (BP) will be associated with more brain pathology. Methods: Participants are 4,057 older men and women without dementia with midlife (mean age 50 ± 6 years) and late-life (mean age 76 ± 5 years) vascular screening, cognitive function, and brain structures onMRI ascertained as part of the Age, Gene/Environment Susceptibility (AGES)- Reykjavik Study. Results: The association of late-life BP to brain measures depended on midlife hypertension history. Higher late-life systolic and diastolic BP (DBP) was associated with an increased risk of white matter lesions and cerebral microbleeds, and this was most pronounced in participants without a history of midlife hypertension. In contrast, in participants with a history of midlife hypertension, lower late-life DBP was associated with smaller total brain and gray matter volumes. This finding was reflected back in cognitive performance; in participants with midlife hypertension, lower DBP was associated with lower memory scores. Conclusion: In this large population-based cohort, late-life BP differentially affects brain pathology and cognitive performance, depending on the history of midlife hypertension. Our study suggests history of hypertension is critical to understand how late-life BP affects brain structure and function.

Original languageEnglish
Pages (from-to)2187-2195
Number of pages9
JournalNeurology
Volume82
Issue number24
DOIs
Publication statusPublished - 17 Jun 2014

Cite this

Muller, M., Sigurdsson, S., Kjartansson, O., Aspelund, T., Lopez, O. L., Jonnson, P. V., ... Launer, L. J. (2014). Joint effect of mid- and late-life blood pressure on the brain: The AGES-Reykjavik Study. Neurology, 82(24), 2187-2195. https://doi.org/10.1212/WNL.0000000000000517
Muller, Majon ; Sigurdsson, Sigurdur ; Kjartansson, Olafur ; Aspelund, Thor ; Lopez, Oscar L. ; Jonnson, Palmi V. ; Harris, Tamara B. ; Van Buchem, Mark ; Gudnason, Vilmundur ; Launer, Lenore J. / Joint effect of mid- and late-life blood pressure on the brain : The AGES-Reykjavik Study. In: Neurology. 2014 ; Vol. 82, No. 24. pp. 2187-2195.
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Muller, M, Sigurdsson, S, Kjartansson, O, Aspelund, T, Lopez, OL, Jonnson, PV, Harris, TB, Van Buchem, M, Gudnason, V & Launer, LJ 2014, 'Joint effect of mid- and late-life blood pressure on the brain: The AGES-Reykjavik Study' Neurology, vol. 82, no. 24, pp. 2187-2195. https://doi.org/10.1212/WNL.0000000000000517

Joint effect of mid- and late-life blood pressure on the brain : The AGES-Reykjavik Study. / Muller, Majon; Sigurdsson, Sigurdur; Kjartansson, Olafur; Aspelund, Thor; Lopez, Oscar L.; Jonnson, Palmi V.; Harris, Tamara B.; Van Buchem, Mark; Gudnason, Vilmundur; Launer, Lenore J.

In: Neurology, Vol. 82, No. 24, 17.06.2014, p. 2187-2195.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Joint effect of mid- and late-life blood pressure on the brain

T2 - The AGES-Reykjavik Study

AU - Muller, Majon

AU - Sigurdsson, Sigurdur

AU - Kjartansson, Olafur

AU - Aspelund, Thor

AU - Lopez, Oscar L.

AU - Jonnson, Palmi V.

AU - Harris, Tamara B.

AU - Van Buchem, Mark

AU - Gudnason, Vilmundur

AU - Launer, Lenore J.

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N2 - Objective: We hypothesized that in participants with a history of hypertension, lower late-life blood pressure (BP) will be associated with more brain pathology. Methods: Participants are 4,057 older men and women without dementia with midlife (mean age 50 ± 6 years) and late-life (mean age 76 ± 5 years) vascular screening, cognitive function, and brain structures onMRI ascertained as part of the Age, Gene/Environment Susceptibility (AGES)- Reykjavik Study. Results: The association of late-life BP to brain measures depended on midlife hypertension history. Higher late-life systolic and diastolic BP (DBP) was associated with an increased risk of white matter lesions and cerebral microbleeds, and this was most pronounced in participants without a history of midlife hypertension. In contrast, in participants with a history of midlife hypertension, lower late-life DBP was associated with smaller total brain and gray matter volumes. This finding was reflected back in cognitive performance; in participants with midlife hypertension, lower DBP was associated with lower memory scores. Conclusion: In this large population-based cohort, late-life BP differentially affects brain pathology and cognitive performance, depending on the history of midlife hypertension. Our study suggests history of hypertension is critical to understand how late-life BP affects brain structure and function.

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SN - 0028-3878

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Muller M, Sigurdsson S, Kjartansson O, Aspelund T, Lopez OL, Jonnson PV et al. Joint effect of mid- and late-life blood pressure on the brain: The AGES-Reykjavik Study. Neurology. 2014 Jun 17;82(24):2187-2195. https://doi.org/10.1212/WNL.0000000000000517