Imaging dopamine function and microglia in asymptomatic LRRK2 mutation carriers.

Abstract:

:Neuroinflammation (microglial activation) and subclinical nigrostriatal dysfunction have been reported in subjects at risk of Parkinsonism. Eight non-manifesting carriers (NMCs) of LRRK2 G2019S mutation had 11C-PK11195 and 18F-DOPA PET to assess microglial activation and striatal dopamine system integrity, respectively. Comparisons were made with healthy controls. Five LRRK2-NMCs had subclinical reductions of putaminal 18F-DOPA uptake. Three of them had significantly raised nigral 11C-PK11195 binding bilaterally. These findings indicate that nigrostriatal dysfunction and neuroinflammation occur in LRRK2-NMCs. Studies in larger cohorts with appropriate follow-up are needed to elucidate the significance of neuroinflammation in the premotor phase of LRRK2-PD.

journal_name

J Neurol

journal_title

Journal of neurology

authors

Gersel Stokholm M,Garrido A,Tolosa E,Serradell M,Iranzo A,Østergaard K,Borghammer P,Møller A,Parbo P,Stær K,Brooks DJ,Martí MJ,Pavese N

doi

10.1007/s00415-020-09830-3

subject

Has Abstract

pub_date

2020-08-01 00:00:00

pages

2296-2300

issue

8

eissn

0340-5354

issn

1432-1459

pii

10.1007/s00415-020-09830-3

journal_volume

267

pub_type

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