The Price of Stress: High Bedtime Salivary Cortisol Levels Are Associated with Brain Atrophy and Cognitive Decline in Stroke Survivors. Results from the TABASCO Prospective Cohort Study

Journal of Alzheimer's Disease : JAD
Oren TeneEinor Ben Assayag

Abstract

Previous studies suggest that excessive cortisol levels after stroke are associated with cognitive dysfunction. However, limited data exist regarding associations between post-stroke cortisol levels, brain abnormalities, genetic factors, and cognitive outcome. We sought to study these issues in a longitudinal stroke survivors cohort. Data from 182 cognitively intact ischemic stroke patients from the TABASCO study were available. Saliva cortisol levels (bedtime and post-awakening) and cognitive assessments were obtained on admission, and 6, 12, and 24 months thereafter. During hospitalization, patients underwent 3T MRI scans and APOE genotyping. Higher bedtime cortisol levels immediately post-stroke were associated with larger neurological deficits (p < 0.001), brain atrophy (p = 0.025), worse white matter integrity (p = 0.003), and worse cognitive results up to 24 months post-stroke. These findings remained significant when adjusted for age, gender, education, smoking, stroke severity, apolipoprotein E4 (ApoE4) status, and body mass index. ApoE4 negatively modified the relation between cortisol and memory. As a group, participants who presented with high admission bedtime cortisol levels continued to present relatively elevated...Continue Reading

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Citations

Dec 20, 2020·Physiological Reports·Carol Jones, Christopher Gwenin
Jun 16, 2021·European Journal of Neurology : the Official Journal of the European Federation of Neurological Societies·Chunrong TaoWen Sun

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Clinical Trials Mentioned

NCT01926691

Software Mentioned

FreeSurfer
SPSS
NeuroTrax

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