Enlarged perivascular spaces and cognition

Saima Hilal, Chuen Seng Tan, Hieab H.H. Adams, Mohamad Habes, Vincent Mok, Narayanaswamy Venketasubramanian, Edith Hofer, M. Kamran Ikram, Jill Abrigo, Meike W. Vernooij, Christopher Chen, Norbert Hosten, Henry Volzke, Hans J. Grabe, Reinhold Schmidt, M. Arfan Ikram

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Objective To investigate the association of enlarged perivascular spaces (ePVS) with cognition in elderly without dementia. Methods We included 5 studies from the Uniform Neuro-Imaging of Virchow-Robin Space Enlargement (UNIVRSE) consortium, namely the Austrian Stroke Prevention Family Study, Study of Health in Pomerania, Rotterdam Study, Epidemiology of Dementia in Singapore study, and Risk Index for Subclinical Brain Lesions in Hong Kong study. ePVS were counted in 4 regions (mesencephalon, hippocampus, basal ganglia, and centrum semiovale) with harmonized rating across studies. Mini-Mental State Examination (MMSE) and general fluid cognitive ability factor (G-factor) were used to assess cognitive function. For each study, a linear regression model was performed to estimate the effect of ePVS on MMSE and G-factor. Estimates were pooled across studies with the use of inverse variance meta-analysis with fixed-or random-effect models when appropriate. Results The final sample size consisted of 3,575 persons (age range 63.4-73.2 years, 50.6% women). Total ePVS counts were not significantly associated with MMSE score (mean difference per ePVS score increase 0.001, 95% confidence interval [CI]-0.007 to 0.008, p = 0.885) or G-factor (mean difference per ePVS score increase 0.002, 95% CI-0.001 to 0.006, p = 0.148) in age-, sex-, and education-adjusted models. Adjustments for cardiovascular risk factors and MRI markers did not change the results. Repeating the analyses with region-specific ePVS rendered similar results. Conclusions In this study, we found that ePVS counts were not associated with cognitive dysfunction in the general population. Future studies with longitudinal designs are warranted to examine whether ePVS contribute to cognitive decline.

Original languageEnglish (US)
Pages (from-to)e832-e842
JournalNeurology
Volume91
Issue number9
DOIs
StatePublished - Aug 28 2018
Externally publishedYes

ASJC Scopus subject areas

  • Clinical Neurology

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    Hilal, S., Tan, C. S., Adams, H. H. H., Habes, M., Mok, V., Venketasubramanian, N., Hofer, E., Kamran Ikram, M., Abrigo, J., Vernooij, M. W., Chen, C., Hosten, N., Volzke, H., Grabe, H. J., Schmidt, R., & Arfan Ikram, M. (2018). Enlarged perivascular spaces and cognition. Neurology, 91(9), e832-e842. https://doi.org/10.1212/WNL.0000000000006079