Cited by 129Dementia and Cognitive Impairment ResearchThyroid Disorders and TreatmentsAlzheimer's disease research and treatments

Thyroid Hormones, Dementia, and Atrophy of the Medial Temporal Lobe

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de Jong, Frank Jan, den Heijer, Tom, Visser, Theo J., de Rijke, Yolanda B., Drexhage, Hemmo A., Hofman, Albert, Breteler, Monique M. B.·2006·The Journal of Clinical Endocrinology & Metabolism

Abstract

CONTEXT: Thyroid function has been related to Alzheimer disease (AD), but it remains unclear whether thyroid dysfunction results from or contributes to developing AD. OBJECTIVE: The objective of the study was to determine the association between thyroid function and both medial temporal lobe atrophy on brain magnetic resonance imaging (MRI) as putative early sign of AD and risk of dementia. DESIGN AND PARTICIPANTS: This was a population-based cohort study among 1077 elderly subjects aged 60-90 yr and dementia free at baseline (1995-1996). MAIN OUTCOME MEASURES: Nonfasting serum levels of TSH, free T(4) (fT(4)), T(3), and rT(3) were available in 1025 subjects followed up for incident dementia until 2005. In a subset of 489 nondemented elderly, we assessed volumes of the hippocampus and amygdala on brain MRI. Subjects using thyroid medication were excluded. RESULTS: During 5657 person-years of follow-up (mean 5.5 yr), 63 subjects were diagnosed with dementia (46 with AD). TSH and thyroid hormones were not associated with risk of dementia or AD. TSH and T(3) were also not related to brain atrophy, whereas nondemented subjects with higher fT(4) levels had more hippocampal and amygdalar atrophy on MRI. Similar associations were found for rT(3). Excluding subjects with thyroid disorders or incipient AD did not change the results. CONCLUSION: In our study, TSH was related neither to risk of AD nor with early MRI markers thereof, arguing against an important role of thyroid function in the development of AD. Whether the association of higher fT(4) and rT(3) levels with brain atrophy on MRI has functional significance remains to be elucidated.

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Crossref · 10.1210/jc.2006-0449

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Authors
de Jong, F. J., den Heijer, T., Visser, T. J., de Rijke, Y. B., Drexhage, H. A., Hofman, A., & Breteler, M. M. B.
Affiliations
  • Departments of Epidemiology and Biostatistics (F.J.d.J., T.d.H., A.H., M.M.B.B.) 3000 DR Rotterdam, The Netherlands
  • Internal Medicine (T.J.V., Y.B.d.R.) 3000 DR Rotterdam, The Netherlands
  • Erasmus MC (NL)
Corresponding author
Breteler, Monique M. B.
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2006-07-01
Volume
91
Issue
7
Pages
2569-2573
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2017918605
Cited by
129
References
41
Citations by year
2026: 4 · 2025: 2 · 2024: 15 · 2023: 6 · 2022: 10 · 2021: 6 · 2020: 9 · 2019: 4 · 2018: 6 · 2017: 3 · 2016: 6 · 2015: 5 · 2014: 7 · 2013: 9 · 2012: 9
FWCI
3.40
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • EUR Research Repository (Erasmus University Rotterdam) (publishedVersion)
  • EUR Research Repository (Erasmus University Rotterdam) (submittedVersion)
  • RePub (Erasmus University Rotterdam) (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
thyroid function, thyroid hormones, dementia, Alzheimer's disease, medial temporal lobe atrophy, thyroid-stimulating hormone, free thyroxine, reverse T3, hippocampal atrophy, amygdala atrophy, brain atrophy, older adults, incident dementia risk
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Amygdala, Atrophy, Dementia, Follow-Up Studies, Hippocampus, Humans, Magnetic Resonance Imaging, Middle Aged, Risk Factors, Temporal Lobe, Thyroid Diseases, Thyroid Gland, Thyroid Hormones, Thyrotropin, Thyroxine, Triiodothyronine, Triiodothyronine, Reverse, Cohort Studies

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