ArticleBrain communications2026
Lower synaptic density in mood circuitry underlies depression in Parkinson's disease.
Article in Brain communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Synaptic vesicle glycoprotein 2A PET imaging in parkinsonian α-synucleinopathies: a systematic review.Journal of neurology · 2026Pooled it
- Psychiatry in neurodegenerative disease: toward a unified neurobiological framework.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026Article
- Treadmill exercise improves motor deficits and partially normalizes electrophysiological properties of substantia nigra pars reticulata PV-lineage neurons in 6-OHDA-lesioned mice.Frontiers in physiology · 2026Article
Corrections and comments
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Authors and funding
20 authors.
Funding
Abstract
Depression in Parkinson's disease is often reported as being more debilitating than the motor symptoms and has been shown to accelerate disease progression. Identifying its underlying neurobiology is crucial in the discovery of mechanism-informed treatments. We hypothesize that lower synaptic density in mood circuitry drives symptoms of depression in Parkinson's disease. To test this hypothesis, we used PET imaging and [
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.