Research Links Long COVID to Brain Dopamine Damage - 2026世界杯

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一项由加拿大精神卫生中心(CAMH)研究人员牵头、并发表在《eBioMedicine》期刊上的最新脑成像研究,为长新冠(Long COVID)与大脑多巴胺释放神经元损伤之间存在关联提供了迄今为止最有力的证据。

研究人员利用正电子发射断层扫描(PET)技术,对患有长新冠的患者大脑进行了详细分析。结果显示,与未感染新冠病毒的对照组相比,长新冠患者大脑中多巴胺能神经元的数量显著减少。多巴胺是一种关键的神经递质,对调节情绪、动机、奖励和运动控制至关重要。

这项研究的发现,进一步揭示了长新冠可能对大脑功能产生的深远影响。此前已有研究表明,长新冠可能导致一系列神经系统症状,包括“脑雾”(brain fog)、记忆力减退、注意力不集中以及情绪波动等。此次研究直接将这些症状与多巴胺系统的损伤联系起来,为理解长新冠的病理机制提供了新的视角。

首席研究员Dr. Naweed Khan表示:“我们的研究结果表明,长新冠可能不仅仅是一种呼吸道疾病,它还可能对大脑健康产生持久的影响。特别是对多巴胺系统的损害,可能解释了许多患者经历的认知和情绪障碍。”

研究团队指出,这项研究的样本量相对较小,未来还需要更大规模的研究来进一步验证这些发现,并探索多巴胺损伤的具体机制以及潜在的治疗方法。然而,这项研究无疑为理解长新冠的神经生物学基础迈出了重要一步,并可能为开发针对长新冠认知和情绪症状的新疗法提供方向。

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