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Neurology
RCT
Prasinezumab showed non-significant delay in motor progression versus placebo in early-stage Parkinson's disease
Early Parkinson's drug trial shows no delay in motor progression
This phase 2b trial evaluated intravenous prasinezumab in individuals with early-stage Parkinson's disease on stable medication. The study f…
A Phase 2b trial of prasinezumab in early Parkinson's disease failed to meet its primary endpoint of delaying motor progression compared to …
May 30, 2026
Neurology
Meta-analysis
Deep brain stimulation improves motor function and reduces levodopa needs in Parkinson's disease patients regardless of GBA mutation status
Deep brain stimulation helps Parkinson's patients but GBA mutation carriers face faster cognitive decline
A systematic review found that deep brain stimulation significantly enhanced motor function and lowered medication requirements for Parkinso…
Deep brain stimulation improves movement and lowers medication needs for Parkinson's patients, yet those with GBA mutations show faster thin…
May 20, 2026
Neurology
Cohort
CSF SAA status associates with levodopa responsiveness and motor progression in Parkinson's disease patients
Parkinson’s test predicts levodopa response and motor decline speed
This observational cohort study analyzed 223 sporadic Parkinson's disease participants from the PPMI cohort initiating levodopa.
Test reveals Parkinson’s patients with alpha-synuclein seeds respond better to levodopa and decline slower than those without the seeds.
medRxiv
Apr 23, 2026
Diabetes & Endocrinology
Cohort
Hypothesis links cumulative levodopa exposure to frailty and reduced healthspan in Parkinson's disease
Researchers propose cumulative levodopa exposure may increase health complications in Parkinson’s disease
A hypothesis proposes that cumulative levodopa exposure in patients with Parkinson's disease may contribute to frailty and reduced healthspa…
Parkinson's patients on long-term levodopa face higher risks of dementia, falls, and death, echoing how other life-saving drugs later showed…
Frontiers
Apr 16, 2026
Pediatrics
Sys. Review
Review of arginine and levodopa stimulation testing reports hematuria in pediatric patients
Red urine after a growth test? Here is what you need to know
This case report and literature review examines hematuria associated with combined arginine and levodopa growth hormone stimulation testing …
A simple growth test can sometimes turn urine red, but it is not dangerous and resolves quickly with rest and water.
Frontiers
Apr 15, 2026