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• W3202373886 abstract "Abstract Hypothalamic–pituitary–adrenal (HPA) axis dysregulation has been commonly reported in major depressive disorder (MDD), but with considerable heterogeneity of results; potentially due to the predominant use of acute measures of an inherently variable/phasic system. Chronic longer-term measures of HPA-axis activity have yet to be systematically examined in MDD, particularly in relation to brain phenotypes, and in the context of early-life/contemporaneous stress. Here, we utilise a temporally stable measure of cumulative HPA-axis function (hair glucocorticoids) to investigate associations between cortisol, cortisone and total glucocorticoids with concurrent measures of (i) lifetime-MDD case/control status and current symptom severity, (ii) early/current-life stress and (iii) structural neuroimaging phenotypes, in N = 993 individuals from Generation Scotland (mean age = 59.1 yrs). Increased levels of hair cortisol were significantly associated with reduced global and lobar brain volumes with reductions in the frontal, temporal and cingulate regions ( β range = −0.057 to −0.104, all P FDR < 0.05). Increased levels of hair cortisone were significantly associated with MDD (lifetime-MDD status, current symptoms, and severity; β range = 0.071 to 0.115, all P FDR = < 0.05), with early-life adversity ( β = 0.083, P = 0.017), and with reduced global and regional brain volumes (global: β = −0.059, P = 0.043; nucleus accumbens: β = −0.075, P FDR = 0.044). Associations with total glucocorticoids followed a similar pattern to the cortisol findings. In this large community-based sample, elevated glucocorticoids were significantly associated with MDD, with early, but not later-life stress, and with reduced global and regional brain phenotypes. These findings provide important foundations for future mechanistic studies to formally explore causal relationships between early adversity, chronic rather than acute measures of glucocorticoids, and neurobiological associations relevant to the aetiology of MDD." @default.
• W3202373886 created "2021-10-11" @default.
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• W3202373886 date "2021-10-12" @default.
• W3202373886 modified "2023-10-18" @default.
• W3202373886 title "Hair glucocorticoids are associated with childhood adversity, depressive symptoms and reduced global and lobar grey matter in Generation Scotland" @default.
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• W3202373886 doi "https://doi.org/10.1038/s41398-021-01644-9" @default.
• W3202373886 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8511057" @default.
• W3202373886 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34642301" @default.
• W3202373886 hasPublicationYear "2021" @default.
• W3202373886 type Work @default.

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