儿童多动症中大脑铁度:神经成像研究的系统审查
Hugo A E Morandini1, Prue A Watson2, Parma Barbaro2
1Complex Attention and Hyperactivity Disorders Service, Child and Adolescent Health Services, Perth, WA, Australia; Division of Psychiatry, UWA Medical School, Faculty of Health & Medical Sciences, The University of Western Australia, Australia.
Journal of psychiatric research
|March 28, 2024
概括
患有注意力缺陷/多动障碍 (ADHD) 的儿童始终显示大脑铁含量降低. 这一发现表明铁可能是ADHD的潜在生物标志物,需要进一步调查.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 放射学 放射学是一门学科.
背景情况:
- 铁在大脑发育中的关键作用,包括神经递质合成和髓形成,表明它与神经系统疾病有关.
- 注意缺陷/多动症 (ADHD) 病理生理学可能涉及铁失调.
- 研究大脑铁水平为理解ADHD提供了一个潜在的途径.
研究的目的:
- 系统地审查目前关于儿童和青少年被诊断患有多动症的脑铁异常的证据.
- 评估磁共振成像 (MRI) 技术在ADHD中量化脑铁的实用性.
主要方法:
- 根据PRISMA指南,在Medline,Scopus和Proquest (2008-2023) 中进行了系统的文献搜索.
- 分析了七项横截面研究,比较ADHD患者 (儿童/青少年) 的脑铁估计值与神经类型对照值.
- 包括放松度和定量敏感度映射在内的MRI方法被用于评估大脑铁水平.
主要成果:
- 跨研究的一致发现是,在以前没有服用过药的多动症儿童中,大脑铁含量显著降低.
- 两项研究表明,精神刺激药物可以使ADHD患者的脑铁度正常化或增加.
- 方法的变化并没有否定关于脑铁减少的发现的一致性.
结论:
- 减少大脑铁是ADHD儿童的一致发现.
- 大脑铁可以作为ADHD的潜在生物标志物.
- 需要进行更多的纵向研究,采用更大的样本大小来证实这些发现,并探索补充铁的效果.
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