庞庞
(2023-12-30 20:07):
#paper Brain aging in major depressive disorder: results from the ENIGMA major depressive disorder working group
doi: 10.1038/s41380-020-0754-0 研究者使用大样本数据集(ENIGMA)探究了抑郁症患者脑龄相对正常人的差异。具体而言,他们使用正常人的脑结构信息,构建了预测脑龄的模型,并将抑郁症患者作为测试集对他们的脑龄进行了预测。研究发现,抑郁症患者的脑龄相比正常人更高,并且和临床症状无关。
Brain aging in major depressive disorder: results from the ENIGMA major depressive disorder working group
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Abstract:
Major depressive disorder (MDD) is associated with an increased risk of brain atrophy, aging-related diseases, and mortality. We examined potential advanced brain aging in adult MDD patients, and whether this process is associated with clinical characteristics in a large multicenter international dataset. We performed a mega-analysis by pooling brain measures derived from T1-weighted MRI scans from 19 samples worldwide. Healthy brain aging was estimated by predicting chronological age (18-75 years) from 7 subcortical volumes, 34 cortical thickness and 34 surface area, lateral ventricles and total intracranial volume measures separately in 952 male and 1236 female controls from the ENIGMA MDD working group. The learned model coefficients were applied to 927 male controls and 986 depressed males, and 1199 female controls and 1689 depressed females to obtain independent unbiased brain-based age predictions. The difference between predicted "brain age" and chronological age was calculated to indicate brain-predicted age difference (brain-PAD). On average, MDD patients showed a higher brain-PAD of +1.08 (SE 0.22) years (Cohen's d = 0.14, 95% CI: 0.08-0.20) compared with controls. However, this difference did not seem to be driven by specific clinical characteristics (recurrent status, remission status, antidepressant medication use, age of onset, or symptom severity). This highly powered collaborative effort showed subtle patterns of age-related structural brain abnormalities in MDD. Substantial within-group variance and overlap between groups were observed. Longitudinal studies of MDD and somatic health outcomes are needed to further assess the clinical value of these brain-PAD estimates.
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