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Endogenous hormones, androgen receptor CAG repeat length and fluid cognition in middle-aged and older men: results from the European Male Ageing Study

Lee, David M.; Ulubaev, Aslan; Tajar, Abdelouahid; Pye, Stephen R.; Pendleton, Neil; Purandare, Nitin; O'Neill, Terence W.; O'Connor, Daryl B.; Labrie, Fernand and Platt, Hazel, et al. (2010) In European Journal of Endocrinology1994-01-01+01:00 162(6). p.1155-1164
Abstract
Objective: Data remain divergent regarding the activational effects of endogenous hormones on adult cognitive function. We examined the association between cognition, hormones and androgen receptor (AR) CAG repeat length in a large cohort of men. Design: Community-based, cross-sectional study of 3369 men aged 40-79 years. Methods: Cognition tests were the Rey-Osterrieth Complex Figure, Camden Topographical Recognition Memory and Digit-Symbol Substitution. A fluid cognition (FC) z-score was computed from the individual tests. Testosterone, oestradiol (OE2) and 5 alpha-dihydrotestosterone were measured by gas chromatography-mass spectrometry; DHEAS, LH, FSH and sex hormone-binding globulin (SHBG) by electrochemiluminescence. Free... (More)
Objective: Data remain divergent regarding the activational effects of endogenous hormones on adult cognitive function. We examined the association between cognition, hormones and androgen receptor (AR) CAG repeat length in a large cohort of men. Design: Community-based, cross-sectional study of 3369 men aged 40-79 years. Methods: Cognition tests were the Rey-Osterrieth Complex Figure, Camden Topographical Recognition Memory and Digit-Symbol Substitution. A fluid cognition (FC) z-score was computed from the individual tests. Testosterone, oestradiol (OE2) and 5 alpha-dihydrotestosterone were measured by gas chromatography-mass spectrometry; DHEAS, LH, FSH and sex hormone-binding globulin (SHBG) by electrochemiluminescence. Free testosterone and OE2 were calculated from total hormone, SHBG and albumin. CAG repeat lengths were assayed by PCR genotyping. Results: Total testosterone and free testosterone were associated with higher FC z-scores, LH and FSH with lower FC z-scores in age-adjusted linear regressions. After adjusting for health, lifestyle and centre, a modest association was only observed between DHEAS and a lower FC z-score (beta=-0.011, P=0.02), although this was driven by subjects with DHEAS levels > 10 mu mol/l. Locally weighted plots revealed no threshold effects between hormones and FC. There was no association between CAG repeat length and FC z-score after adjustment for age and centre (beta=-0.007, P=0.06), nor any interaction effect between CAG repeat length and hormones. Conclusion: Our results suggest that endogenous hormones are not associated with a vision-based measure of FC among healthy, community-dwelling men. Further studies are warranted to determine whether 'high' DHEAS levels are associated with poorer performance on a broader range of neuropsychological tests. (Less)
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published
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European Journal of Endocrinology1994-01-01+01:00
volume
162
issue
6
pages
1155 - 1164
publisher
Society of the European Journal of Endocrinology
external identifiers
  • wos:000277904500019
  • scopus:77952701998
ISSN
1479-683X
DOI
10.1530/EJE-09-0970
language
English
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yes
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e1f0dff3-9bee-49b2-bccb-ebba522ca53c (old id 1617524)
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http://www.ncbi.nlm.nih.gov/sites/pubmed
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2010-06-21 13:51:54
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@article{e1f0dff3-9bee-49b2-bccb-ebba522ca53c,
  abstract     = {Objective: Data remain divergent regarding the activational effects of endogenous hormones on adult cognitive function. We examined the association between cognition, hormones and androgen receptor (AR) CAG repeat length in a large cohort of men. Design: Community-based, cross-sectional study of 3369 men aged 40-79 years. Methods: Cognition tests were the Rey-Osterrieth Complex Figure, Camden Topographical Recognition Memory and Digit-Symbol Substitution. A fluid cognition (FC) z-score was computed from the individual tests. Testosterone, oestradiol (OE2) and 5 alpha-dihydrotestosterone were measured by gas chromatography-mass spectrometry; DHEAS, LH, FSH and sex hormone-binding globulin (SHBG) by electrochemiluminescence. Free testosterone and OE2 were calculated from total hormone, SHBG and albumin. CAG repeat lengths were assayed by PCR genotyping. Results: Total testosterone and free testosterone were associated with higher FC z-scores, LH and FSH with lower FC z-scores in age-adjusted linear regressions. After adjusting for health, lifestyle and centre, a modest association was only observed between DHEAS and a lower FC z-score (beta=-0.011, P=0.02), although this was driven by subjects with DHEAS levels > 10 mu mol/l. Locally weighted plots revealed no threshold effects between hormones and FC. There was no association between CAG repeat length and FC z-score after adjustment for age and centre (beta=-0.007, P=0.06), nor any interaction effect between CAG repeat length and hormones. Conclusion: Our results suggest that endogenous hormones are not associated with a vision-based measure of FC among healthy, community-dwelling men. Further studies are warranted to determine whether 'high' DHEAS levels are associated with poorer performance on a broader range of neuropsychological tests.},
  author       = {Lee, David M. and Ulubaev, Aslan and Tajar, Abdelouahid and Pye, Stephen R. and Pendleton, Neil and Purandare, Nitin and O'Neill, Terence W. and O'Connor, Daryl B. and Labrie, Fernand and Platt, Hazel and Payne, Debbie and Bartfai, Gyorgy and Boonen, Steven and Casanueva, Felipe F. and Finn, Joseph D. and Forti, Gianni and Giwercman, Aleksander and Han, Thang S. and Huhtaniemi, Ilpo T. and Kula, Krzysztof and Lean, Michael E. J. and Punab, Margus and Silman, Alan J. and Vanderschueren, Dirk and Wu, Frederick C. W.},
  issn         = {1479-683X},
  language     = {eng},
  number       = {6},
  pages        = {1155--1164},
  publisher    = {Society of the European Journal of Endocrinology},
  series       = {European Journal of Endocrinology1994-01-01+01:00},
  title        = {Endogenous hormones, androgen receptor CAG repeat length and fluid cognition in middle-aged and older men: results from the European Male Ageing Study},
  url          = {http://dx.doi.org/10.1530/EJE-09-0970},
  volume       = {162},
  year         = {2010},
}