Abstract:
OBJECTIVE:The androgen receptor (AR) gene contains a CAG repeat polymorphism coding for a polyglutamine chain, the length of which is inversely correlated with AR transcriptional activity. We explored whether this polymorphism modulates the activities of testosterone (T) related to body composition in elderly men. DESIGN:We performed cross-sectional analyses using data from a 4-year follow-up study in community-dwelling men aged 75-89 years (n=159). METHODS:Body composition was assessed by dual-energy X-ray absorptiometry and its relation with T and the AR gene CAG repeat length was assessed by multiple linear regression analyses, adjusting for confounding and exploring effect modification. RESULTS:AR gene CAG repeat length was not directly related to body composition, either with or without adjustment for confounding variables like age, weight, total T or sex hormone binding globulin (SHBG) levels. However, exploration of effect modification showed that CAG repeat length modulated the relation between T and body composition (standardized regression coefficients of interaction term: beta=0.12, P<0.01 and beta=-0.09, P<0.05 for fat-free mass and fat mass respectively). These results were confirmed using similar models and data of mean T, SHBG and weight of the 2 years' preceding body composition assessment instead of data of the same year (beta=0.09, P<0.05 and beta=-0.09, P<0.05 respectively). CONCLUSION:These findings suggest that the AR gene CAG polymorphism contributes, albeit modestly, to the between-subject variation of T action on body composition in community-dwelling elderly men.
journal_name
Eur J Endocrinoljournal_title
European journal of endocrinologyauthors
Lapauw B,Goemaere S,Crabbe P,Kaufman JM,Ruige JBdoi
10.1530/EJE-06-0607subject
Has Abstractpub_date
2007-03-01 00:00:00pages
395-401issue
3eissn
0804-4643issn
1479-683Xpii
156/3/395journal_volume
156pub_type
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journal_title:European journal of endocrinology
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abstract:OBJECTIVE:Familial isolated primary hyperparathyroidism (FIHP) is defined as hereditary primary hyperparathyroidism without the association of other diseases or tumors. Linkage analyses suggest that different genotypes can lead to the same phenotype of primary hyperparathyroidism. Hereditary syndromes associated with p...
journal_title:European journal of endocrinology
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abstract:CONTEXT:Although combination therapy of acromegaly with long-acting somatostatin analogs (LA-SSAs) and pegvisomant (PEGV) normalizes insulin-like growth factor-1 (IGF1) levels in the majority of patients, it requires long-term adherence. Switching from combination therapy to monotherapy with weekly PEGV could improve p...
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abstract:OBJECTIVE:Thyroid dysfunction predicts poorer health outcomes, but the relationship between thyroid hormone levels within the reference range and mortality in older adults remains unclear. In this study, we examined the associations between the concentrations of free thyroxine (FT4) and TSH and all-cause mortality in o...
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更新日期:1994-01-01 00:00:00
abstract::Recombinant human GH has been licensed for use in adult patients with GH deficiency (GHD) for over 15 years. Early weight- and surface area-based dosing regimens were effective but resulted in supraphysiological levels of IGF1 and increased incidence of side effects. Current practice has moved towards individualised r...
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更新日期:2013-02-20 00:00:00
abstract:OBJECTIVE:Thyroidal production of triiodothyronine (T(3)) is absent in patients who have undergone total thyroidectomy. Therefore, relative T(3) deficiency may occur during postoperative levothyroxine (L-T(4)) therapy. The objective of this study was to evaluate how the individual serum T(3) level changes between preop...
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更新日期:2012-09-01 00:00:00
abstract::CLTA4 is relevant for FOXP3(+)Treg cells, and the link between skewed X chromosome inactivation (XCI) and autoimmunity is recognized. The observation of immune dysregulation polyendocrinopathy enteropathy X-linked syndrome and multiorgan endocrine autoimmune phenomena in various members of one family, associated with ...
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pub_type: 杂志文章
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更新日期:2012-07-01 00:00:00
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pub_type: 杂志文章,多中心研究
doi:10.1530/eje.1.02214
更新日期:2006-08-01 00:00:00
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更新日期:2009-11-01 00:00:00
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pub_type: 杂志文章
doi:10.1530/EJE-10-0718
更新日期:2010-12-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2019-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1530/eje.0.1350729
更新日期:1996-12-01 00:00:00
abstract:OBJECTIVE:Neck and thorax single photon emission computed tomography with computed tomography (SPECT-CT) improves the reliability of postablation (131)I whole-body scan (WBS) for differentiated thyroid cancer (DTC). The aim of this study was to assess the prognostic value for persistent or recurrent disease of postabla...
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doi:10.1530/EJE-11-0156
更新日期:2011-06-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2018-02-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
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更新日期:1995-07-01 00:00:00
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journal_title:European journal of endocrinology
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更新日期:2014-02-01 00:00:00
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更新日期:2012-11-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.1.02047
更新日期:2005-12-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章,多中心研究
doi:10.1530/EJE-10-0602
更新日期:2010-12-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-10-0929
更新日期:2011-03-01 00:00:00
abstract::Previous work has examined potential links between the etiology of GH deficiency (GHD) and the baseline characteristics of the patients including biochemical and psychometric parameters. Using an update of the KIMS pharmaco-epidemiological database (Pfizer International Metabolic Database), we addressed the question h...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-09-0273
更新日期:2009-11-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-19-0173
更新日期:2019-12-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-11-0490
更新日期:2012-02-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1420380
更新日期:2000-04-01 00:00:00
abstract:OBJECTIVE:Mutations in HESX1 represent a rare cause of GH deficiency (GHD) associated with a broad spectrum of other anomalies. We searched for causative mutations in a cohort of 244 Italian patients affected by combined and isolated GHD (IGHD). METHODS:The HESX1 gene-coding region and exon-intron boundaries were scre...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-11-0047
更新日期:2011-05-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 临床试验,杂志文章
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更新日期:2001-11-01 00:00:00