晚年抑郁症中的焦虑:与大脑体积,粉样β,白质病变,认知和功能能力的关联
Maria Kryza-Lacombe1,2, Michelle T Kassel1,2, Philip S Insel2
1Mental Illness Research Education and Clinical Centers, Veterans Affairs Medical Center, San Francisco, CA, USA.
International psychogeriatrics
|January 25, 2024
概括
晚年抑郁症中的焦虑严重程度与认知能力下降有关,而不是像轨道前皮层体积等大脑结构变化. 这一发现突出了认知功能障碍作为老年人抑郁和焦虑干预的关键因素.
科学领域:
- 神经科学是一个神经科学.
- 老年学是指老年学的学科.
- 精神病学是一个精神病学.
背景情况:
- 晚年抑郁症 (LLD) 经常与神经退行性疾病同时发生.
- 在LLD中的异质性,特别是焦虑水平,与神经退行症标志物相关,尚不清楚.
- 焦虑症状的严重程度是LLD异质性的一个关键方面.
研究的目的:
- 检查焦虑症状严重程度与LLD中神经退行相关因素之间的关联.
- 调查焦虑和区域大脑体积,粉样β沉积,白质病,认知功能和功能能力之间的关系.
- 确定哪些因素与LLD中焦虑严重程度最明显相关.
主要方法:
- 121名患有严重抑郁症的老年人 (65-91岁) 被评估焦虑的严重程度.
- 评估的神经成像标志物:轨道前皮层 (OFC) 和胰岛体积,粉样蛋白-β (Aβ) 沉积 (SUVR) 和白质超强度 (WMH) 体积.
- 使用线性回归评估全球认知和功能能力,根据年龄,性别和抑郁症严重程度进行调整.
主要成果:
- 更大的焦虑严重程度与较低的OFC体积和较差的认知功能相关.
- 焦虑的严重程度与胰岛体积,Aβ SUVR,WMH体积或功能能力没有显著关联.
- 在全球模型中,认知功能障碍仍然与焦虑严重程度有显著的关联,而OFC量则没有.
结论:
- 认知功能障碍是与晚年抑郁症中的焦虑严重程度相关的重要因素.
- 研究结果表明,针对认知功能可能对焦虑LLD的干预很重要.
- 这项研究提供了关于LLD焦虑异质性的神经生物学基础的见解.
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