Nat Med:炎性结肠炎患者的后代易患自闭症

2022-09-14 影像小生 MedSci原创

父母(尤其是母亲)IBD与儿童自闭症之间存在潜在因果关系

孤独症谱系障碍(孤独症)是一种慢性神经发育疾病,具有高度可变的临床表现。除了自闭症的核心表型表现(社交沟通困难和兴趣受限/重复行为)之外,新出现的证据提示,近一半的自闭症患者有胃肠道症状。此外,与对照儿童相比,自闭症儿童被诊断为克罗恩病的可能性约高47%,被诊断为溃疡性结肠炎(UC)的可能性约高94%。

 克罗恩病和UC是炎症性肠病(IBD)的主要亚型,IBD是一种与免疫系统失调、肠道微生物组改变、微量营养素吸收不良和贫血相关的慢性疾病。有证据表明,IBD的这些特征可能是与自闭症相关的围产期因素。在此基础上,可以假设父母IBD与儿童自闭症之间的潜在联系。迄今为止的证据尚不明确,该领域4项基于登记系统的研究中只有1项表明母亲UC与儿童自闭症之间存在关联。此外,任何关联的基础病因尚不清楚。

英国布里斯托大学的Christina Dardani研究团队在nature medicine期刊发表重要研究成果。通过四项互补的遗传和流行病学研究发现,父母,特别是母亲,罹患IBD与孩子罹患ASD风险增加密切相关。

该研究进行了4项补充研究,以调查父母IBD与儿童自闭症之间的关联,并阐明了其潜在病因。

(1)在瑞典的一个全国性队列中,父母诊断的IBD与儿童自闭症之间的关联;

(2)利用全基因组关联研究(GWAS)汇总统计分析IBD与孤独症的遗传相关性;

(3)在一个大型英国出生队列中,母亲对IBD的遗传易感性与儿童的自闭症特征之间的多基因关联;

(4)使用双向双样本孟德尔随机化(MR)研究IBD的遗传易感性对自闭症的潜在因果关系和反向因果关系的可能性。

表2. 母亲或父亲诊断为任何IBD、UC、克罗恩病或其他IBD与儿童自闭症诊断之间的关联

表3.自闭症易感性与IBD、UC和克罗恩病之间的遗传相关性(rg)

父母和儿童纵向研究的多基因风险评分分析表明,母亲对IBD的遗传易感性与儿童的自闭症特征之间存在关联。

表4. 在ALSPAC出生队列中,母亲和儿童PRS与IBD、UC、克罗恩病(p阈值为0.05)和标准化孤独症因子平均评分之间的关联

两样本孟德尔随机化分析证明了IBD(尤其是溃疡性结肠炎)的遗传易感性对自闭症的潜在因果效应。

表5.孟德尔随机化IVW评估了IBD、克罗恩病和UC的遗传易感性对自闭症的影响,反之亦然

连锁不平衡评分回归未显示IBD和孤独症之间存在遗传相关性。

通过对这四种互补方法的证据进行三角分析,发现了父母(尤其是母亲)IBD与儿童自闭症之间潜在因果关系的证据。可能与围生期免疫失调、微量营养素吸收不良和贫血有关

原文出处

Parental inflammatory bowel disease and autism in children. Nat Med. 2022 Jul;28(7):1406-1411. doi: 10.1038/s41591-022-01845-9. Epub 2022 Jun 2. PMID: 35654906; PMCID: PMC9307481.

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    2022-12-29 liye789132251
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    2023-04-18 ms5000000159272953 来自广东省

    我已经学习了

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    2022-09-15 xiongke014
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