Siblings’ similarity in neural responses to loss reflects mechanisms of familial transmission for depression

IF 3.7 2区 医学 Q1 PSYCHIATRY
Lilian Y. Li , Lauren N. Grzelak , Randy P. Auerbach , Stewart A. Shankman
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引用次数: 0

Abstract

Having a depressed first-degree relative is one of the most replicated risk factors for depression. Research on the familial transmission of depression, however, has largely ignored siblings, even though sibling relationships are commonplace and characterized by frequent and intense emotions. It has been suggested that frequent contacts in close relationships lead to similarities in emotions and cognitions over time, a process underpinned by biobehavioral synchrony. Consequently, to shed light on the neural mechanism underlying familial transmission of depression, the present study tested whether neural similarity in response to reward and loss, indexed by inter-subject correlation (ISC), was associated with major depressive disorder (MDD) diagnosis, depression symptom severity, and relationship quality in sibling pairs. Same-sex, full-sibling pairs (N = 108 pairs) with a wide range of depression severity separately completed a monetary reward task during electroencephalography acquisition. The ISC in response to reward and loss feedback was calculated using circular correlation between siblings’ phase angles in delta and theta frequency bands, respectively. Significant sibling ISC to reward and loss was observed, with activity maximal at frontocentral sites. Loss-related theta, but not reward-related delta, ISC was associated with: (a) greater depression risk (both lifetime MDD diagnosis and self-reported symptom severity), but not anxiety, and (b) worse sibling relationship quality during childhood in each sibling. Findings provide initial evidence that similarities in neural responses to loss may be a result of disturbed childhood sibling relationships, which may specifically increase risk for depression during adulthood.
兄弟姐妹对丧失的神经反应的相似性反映了抑郁症的家族传播机制。
有一个抑郁的一级亲属是最容易重复的抑郁风险因素之一。然而,对抑郁症家族传播的研究在很大程度上忽略了兄弟姐妹,尽管兄弟姐妹关系很常见,而且以频繁和强烈的情绪为特征。有人认为,随着时间的推移,亲密关系中的频繁接触会导致情感和认知的相似性,这一过程得到了生物行为同步的支持。因此,为了揭示抑郁症家族性传播的神经机制,本研究通过主体间相关性(ISC)测试了对奖励和损失反应的神经相似性是否与重度抑郁症(MDD)诊断、抑郁症状严重程度和兄弟姐妹关系质量有关。不同抑郁程度的同性、全兄弟姐妹(N = 108对)分别在脑电图获得期间完成金钱奖励任务。对奖励和损失反馈的ISC响应分别使用delta和theta频段兄弟姐妹相位角之间的圆形相关性来计算。兄弟姐妹ISC对奖励和损失的反应显著,活动在额中央部位最大。与损失相关的θ波,而与奖励无关,ISC与:(a)更大的抑郁风险(终生重度抑郁症诊断和自我报告的症状严重程度),但与焦虑无关,(b)每个兄弟姐妹在童年时期的兄弟姐妹关系质量更差。研究结果提供了初步证据,表明对失去的神经反应的相似性可能是童年时兄弟姐妹关系受到干扰的结果,这可能会特别增加成年后患抑郁症的风险。
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来源期刊
Journal of psychiatric research
Journal of psychiatric research 医学-精神病学
CiteScore
7.30
自引率
2.10%
发文量
622
审稿时长
130 days
期刊介绍: Founded in 1961 to report on the latest work in psychiatry and cognate disciplines, the Journal of Psychiatric Research is dedicated to innovative and timely studies of four important areas of research: (1) clinical studies of all disciplines relating to psychiatric illness, as well as normal human behaviour, including biochemical, physiological, genetic, environmental, social, psychological and epidemiological factors; (2) basic studies pertaining to psychiatry in such fields as neuropsychopharmacology, neuroendocrinology, electrophysiology, genetics, experimental psychology and epidemiology; (3) the growing application of clinical laboratory techniques in psychiatry, including imagery and spectroscopy of the brain, molecular biology and computer sciences;
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