Cognition and the course of prodromal Parkinson's disease.

Cognition and the course of prodromal Parkinson's disease.
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DOI:
10.1002/mds.27189
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发表时间:
2017-11
期刊:
Movement disorders : official journal of the Movement Disorder Society
影响因子:
--
通讯作者:
PARS Investigators
PARS Investigators
中科院分区:
其他
文献类型:
--
作者:
Weintraub D;Chahine LM;Hawkins KA;Siderowf A;Eberly S;Oakes D;Seibyl J;Stern MB;Marek K;Jennings D;PARS Investigators

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前驱症状帕金森氏病(PD)患者认知功能的前瞻性数据有限。在前驱PD中评估是否(1)基线认知预测转化为临床PD,(2)基线多巴胺转运体(DAT)结合预测认知的纵向变化,以及(3)嗅觉受损预测未来认知衰退。前驱受试者是参加帕金森相关风险研究的136名营养不良患者。我们研究了PD转换者和非转换者的基线神经心理测试表现,以及基线DAT结合和认知变化之间的关联。另外73名正常个体被纳入分析低血糖和认知功能下降之间的关系。在前驱参与者中,基线认知分数并不能显著预测转换,但转换者在评估的6个认知领域中有5个在数字上表现较差,在执行功能/工作记忆(0.68 SD低)和全局认知(0.64 SD低)方面差异最大。较低的基线DAT绑定预示着未来处理速度/注意力的更大下降(p=0.02)。智力低下预示着语言(p=0.005)和记忆能力(p=0.01)未来会有更大的下降。鉴于一般人群中的营养不良预示着认知功能的下降,认知在预测前驱帕金森病转化中的作用需要在长期跟踪的大规模队列中进行评估。多巴胺系统可能与帕金森病高危个体的处理速度/注意力的变化有关。
Prospective data on cognition in prodromal Parkinson’s disease (PD) are limited. To assess in prodromal PD if (1) baseline cognition predicts conversion to clinical PD, (2) baseline dopamine transporter (DAT) binding predicts longitudinal changes in cognition, and (3) impaired olfaction predicts future cognitive decline. Prodromal participants were 136 hyposmic individuals enrolled in the Parkinson Associated Risk Study study. We examined baseline neuropsychological test performance in PD converters vs. non-converters and the association between baseline DAT binding and change in cognition. An additional 73 normosmic individuals were included in analyses of the relationship between hyposmia and cognitive decline. In prodromal participants, baseline cognitive scores did not significantly predict conversion, but converters performed numerically worse on 5 of the 6 cognitive domains assessed, with the greatest differences in executive function/working memory (0.68 SD lower) and global cognition (0.64 SD lower). Lower baseline DAT binding predicted greater future decline in processing speed/attention (p=0.02). Hyposmia predicted greater future decline in language (p=0.005) and memory abilities (p=0.01). Given hyposmia in the general population predicts cognitive decline, the role of cognition in predicting conversion in prodromal PD needs to be assessed in large cohorts followed long-term. The dopamine system may be associated with changes in processing speed/attention in individuals at-risk for PD.
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