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Higher diurnal salivary cortisol levels are related to smaller prefrontal cortex surface area in elderly men and women
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Number of Authors: 8
2016 (English)In: European Journal of Endocrinology, ISSN 0804-4643, E-ISSN 1479-683X, Vol. 175, no 2, 117-126 p.Article in journal (Refereed) Published
Abstract [en]

Objective: Elevated cortisol levels with aging have been associated with atrophy of the hippocampus and prefrontal cortex (PFC), as well as with impaired cognitive functions in men. However, coexisting diseases have confounded many studies examining these relationships. Studies in women are lacking. Our objective was to test whether salivary cortisol levels were related to morphology of the hippocampus and the PFC, and to cognitive performance.

Design: A cross-sectional study including 200 elderly (55-80 years old) men and women.

Method: We used magnetic resonance imaging, tests of episodic-, semantic-, and working memory, visuospatial ability, and cortisol levels in four saliva samples collected during 1 day.

Results: Area under the curve (AUC) for cortisol levels was negatively related to cortical surface area of the left anterior cingulate gyrus (caudal P < 0.001; rostral P = 0.006), right lateral orbitofrontal cortex (P = 0.004), and right rostral middle frontal gyrus (P = 0.003). In women, there was also a negative relationship with cortical surface area in the left rostral middle frontal gyrus (P = 0.006). No relationship was found between cortisol levels and hippocampal volume.

Conclusion: This study suggests that the structure of the medial PFC is related to cortisol levels in both elderly women and men.

Place, publisher, year, edition, pages
2016. Vol. 175, no 2, 117-126 p.
Keyword [en]
salivary cortisol, prefrontal cortex surface area
National Category
Gerontology, specializing in Medical and Health Sciences
Research subject
Psychology
Identifiers
URN: urn:nbn:se:su:diva-133385DOI: 10.1530/EJE-16-0352ISI: 000380067200010PubMedID: 27190207OAI: oai:DiVA.org:su-133385DiVA: diva2:967585
Available from: 2016-09-09 Created: 2016-09-06 Last updated: 2017-01-16Bibliographically approved

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CiteExportLink to record
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