ArticleNPJ Parkinson's disease2025
Nigral volume loss in prodromal, early, and moderate Parkinson's disease.
Article in NPJ Parkinson's disease, 2025. 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
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Effects of deep brain stimulation on non-motor symptoms in Parkinson's disease: insights from longitudinal studies using consistent evaluation scales.Journal of neurology · 2026Pooled it
- REM Sleep Behavior Disorder as a Prodromal Synucleinopathy: Updates on Clinical and Laboratory Biomarkers, and Implications for Neuroprotective Trials.Current neurology and neuroscience reports · 2025Review
- AI-assisted MRI segmentation analysis of brain region volume alterations in Parkinson's disease.Frontiers in human neuroscience · 2025Article
Corrections and comments
- Update of
Authors and funding
5 authors.
Funding
Abstract
The loss of melanized neurons in the substantia nigra pars compacta (SNc) is a hallmark pathology in Parkinson's disease (PD). Melanized neurons in SNc can be visualized in vivo using magnetization transfer (MT) effects. Nigral volume was extracted in data acquired with a MT-prepared gradient echo sequence in 50 controls, 90 non-manifest carriers (46 LRRK2 and 44 GBA1 nonmanifest carriers), 217 prodromal hyposmic participants, 76 participants with rapid eye movement sleep behavior disorder (RBD), 194 de novo PD patients and 26 moderate PD patients from the Parkinson's Progressive Markers Initiative. No difference in nigral volume was seen between controls and LRRK2 and GBA1 non-manifest carriers (F = 0.732; P = 0.483). A significant main effect in group was observed between controls, prodromal hyposmic participants, RBD participants, and overt PD patients (F = 9.882; P < 10
Identifiers
What Socratic holds
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 Socratic graph.