Abstract:
:Stress causes activation of the hypothalamic-pituitary-adrenal (HPA) axis and results in the secretion of corticosteroids, which facilitate behavioral adaptation and promote the termination of the stress response. These actions exerted by cortisol are mediated by two brain corticosteroid receptor types: the high affinity mineralocorticoid (MR) and the low affinity glucocorticoid receptor (GR). Dexamethasone is a potent GR agonist with affinity to MR. Administration of dexamethasone in the evening results in a significant suppression of the morning cortisol awakening response (CAR). Here we tested the involvement of MR variants in this effect of dexamethasone in 218 young healthy subjects (125 females, all using oral contraceptives). For this purpose we determined two single nucleotide polymorphisms (SNPs) in the MR gene, the previously described MRI180V (rs5522) and the MR-2G/C (rs2070951), which both affect in vitro the transactivational capacity of the MR in response to either cortisol or dexamethasone. Administration of a low dose dexamethasone (0.25mg) at 2300h resulted in a significant suppression of the cortisol awakening response (CAR). Both SNPs modulated the suppression of the CAR after dexamethasone significantly and in a sex specific manner. Suppression of the CAR was highest in the female MR-2G/C GG subjects while in male GG subjects the dexamethasone suppression of the CAR was attenuated compared to the MR-2G/C GC and CC groups. For the MRI180V, male AA subjects showed after dexamethasone a higher CAR than AG subjects while this effect was not observed in females. The SNPs had no significant influence on the CAR without prior dexamethasone treatment. The association of the CAR with functional MR gene variants only in dexamethasone treated subjects suggests the involvement of MR in dexamethasone induced suppression of morning cortisol.
journal_name
Psychoneuroendocrinologyjournal_title
Psychoneuroendocrinologyauthors
van Leeuwen N,Kumsta R,Entringer S,de Kloet ER,Zitman FG,DeRijk RH,Wüst Sdoi
10.1016/j.psyneuen.2009.07.006subject
Has Abstractpub_date
2010-04-01 00:00:00pages
339-49issue
3eissn
0306-4530issn
1873-3360pii
S0306-4530(09)00219-4journal_volume
35pub_type
临床试验,杂志文章abstract::Different doses dexamethasone (0.25, 0.5, and 1 mg) or cortisol (30, 60, and 120 mg) were administered PO at 2230h to 39 depressed patients and 20 healthy subjects on nonsuccessive days. The inhibiting capacity of the two steroids on hypothalamo-pituitary axis (HPA) function was evaluated by measuring the plasma level...
journal_title:Psychoneuroendocrinology
pub_type: 杂志文章
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更新日期:1993-01-01 00:00:00
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journal_title:Psychoneuroendocrinology
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journal_title:Psychoneuroendocrinology
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doi:10.1016/0306-4530(93)90016-e
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journal_title:Psychoneuroendocrinology
pub_type: 杂志文章,meta分析,评审
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journal_title:Psychoneuroendocrinology
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doi:10.1016/j.psyneuen.2017.03.010
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journal_title:Psychoneuroendocrinology
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doi:10.1016/j.psyneuen.2008.09.003
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pub_type: 杂志文章,随机对照试验
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更新日期:2019-05-01 00:00:00
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journal_title:Psychoneuroendocrinology
pub_type: 杂志文章,随机对照试验
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更新日期:2006-10-01 00:00:00
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journal_title:Psychoneuroendocrinology
pub_type: 杂志文章
doi:10.1016/j.psyneuen.2014.04.009
更新日期:2014-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/0306-4530(93)90060-x
更新日期:1993-01-01 00:00:00
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journal_title:Psychoneuroendocrinology
pub_type: 杂志文章
doi:10.1016/j.psyneuen.2008.08.008
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journal_title:Psychoneuroendocrinology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.psyneuen.2016.12.013
更新日期:2017-03-01 00:00:00
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journal_title:Psychoneuroendocrinology
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Psychoneuroendocrinology
pub_type: 杂志文章
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journal_title:Psychoneuroendocrinology
pub_type: 杂志文章
doi:10.1016/j.psyneuen.2012.07.009
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journal_title:Psychoneuroendocrinology
pub_type: 杂志文章,评审
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更新日期:2021-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:Psychoneuroendocrinology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.psyneuen.2012.01.011
更新日期:2012-09-01 00:00:00
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