Effect of striatal dopamine depletion on cognition in de novo Parkinson's disease

Seok Jong Chung, Han Soo Yoo, Jungsu S. Oh, Jae Seung Kim, Byoung Seok Ye, Young H. Sohn, Phil Hyu Lee

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Introduction: To investigate the relationship between the sub-regional pattern of striatal dopamine depletion and cognitive impairment in early-stage Parkinson's disease (PD), and determine the effect of striatal dopamine density on cognitive prognosis. Methods: Patients with drug-naïve non-demented PD were divided into mild cognitive impairment (PD-MCI; n = 129) and cognitively normal (PD-CogN; n = 182) groups. Using quantification of the dopamine transporter (DAT) availability in each striatal sub-region with 18 F-FP-CIT PET scans, we performed inter-group comparative analysis of DAT availability and multivariate linear regression analysis to assess the association between DAT availability and cognitive performance. Additionally, the effect of baseline DAT availability on the cognitive decline across time as well as on changes in the cognitive status was estimated. Results: The PD-MCI group exhibited more severely decreased DAT availability in all the striatal sub-regions compared to the PD-CogN group, although there was no significant difference in PD duration. The DAT availability in the caudate, anterior putamen, and ventral striatum was directly associated with attention/working memory, frontal/executive, and visuospatial functions, while the DAT availability of the posterior putamen was not. However, the baseline DAT availability of the striatal sub-regions did not influence the cognitive decline or cognitive status in the longitudinal cognitive assessment. Conclusion: Our results suggest that striatal DAT availability may determine MCI in patients with de novo PD. Dopamine loss in the associative and limbic striatum is closely linked to cognitive deficits in early-stage PD, although it does not affect cognitive prognosis.

Original languageEnglish
Pages (from-to)43-48
Number of pages6
JournalParkinsonism and Related Disorders
Volume51
DOIs
Publication statusPublished - 2018 Jun

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Corpus Striatum
Dopamine Plasma Membrane Transport Proteins
Cognition
Parkinson Disease
Dopamine
Putamen
Executive Function
Short-Term Memory
Positron-Emission Tomography
Linear Models
Regression Analysis

All Science Journal Classification (ASJC) codes

  • Neurology
  • Geriatrics and Gerontology
  • Clinical Neurology

Cite this

Chung, Seok Jong ; Yoo, Han Soo ; Oh, Jungsu S. ; Kim, Jae Seung ; Ye, Byoung Seok ; Sohn, Young H. ; Lee, Phil Hyu. / Effect of striatal dopamine depletion on cognition in de novo Parkinson's disease. In: Parkinsonism and Related Disorders. 2018 ; Vol. 51. pp. 43-48.
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Effect of striatal dopamine depletion on cognition in de novo Parkinson's disease. / Chung, Seok Jong; Yoo, Han Soo; Oh, Jungsu S.; Kim, Jae Seung; Ye, Byoung Seok; Sohn, Young H.; Lee, Phil Hyu.

In: Parkinsonism and Related Disorders, Vol. 51, 06.2018, p. 43-48.

Research output: Contribution to journalArticle

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