Author

C. Laurencin

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Oct 2026

Levodopa Use and Characteristics of Freezing-of-Gait in Patients With Parkinson Disease in the NS-Park and PPMI Cohorts.

BACKGROUND AND OBJECTIVES Recent reports have suggested that levodopa exposure may contribute to freezing of gait (FOG), but this relationship remains controversial because of confounding by disease severity and duration. Our goal was to assess the relationship between levodopa use and FOG incidence and severity. MET...

Raquel Barbosa, P. Bastos, O. Rascol et al. · Neurology · 0 citations

Open access Jul 2026

Reduced dorsal visual stream α2-adrenergic receptor availability is not associated with visuospatial impairment in Parkinson's disease.

BACKGROUND Visuospatial deficits are a common and disabling feature of Parkinson's disease (PD) that are linked to dysfunctions of the dorsal visual stream (DVS) and the cholinergic system. However, a body of evidence also points to the possible role of noradrenergic dysfunction, but direct in vivo evidence has remaine...

Maeliss Legrand, Alice Gaillard, C. Laurencin et al. · Parkinsonism & Related Disor... · 0 citations