ArticleEuropean journal of neurology2024
Correlations between serotonin impairments and clinical indices in multiple system atrophy.
Article in European journal of neurology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 6 citations in OpenAlex.
- Serotonin Transporter Distribution in the Brainstem of Multiple-System Atrophy-Parkinsonian Type: Insights from Pathology andJournal of nuclear medicine : official publication, Society of Nuclear Medicine · 2026Article
- Correlations between Dysphagia Severity Scale Scores and Clinical Indices in Individuals with Multiple System Atrophy.Movement disorders clinical practice · 2025Article
- Review
- Correlations between serotonin impairments and clinical indices in multiple system atrophy.European journal of neurology · 2024Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
background and purposeMultiple system atrophy (MSA) is a neurodegenerative disease with characteristic motor and autonomic symptoms. Impaired brain serotonergic innervation can be associated with various clinical indices of MSA; however, the relationship between clinical symptoms and cerebrospinal fluid (CSF) levels of 5-hydroxyindole acetic acid (5-HIAA), a main serotonin metabolite, has not been fully elucidated.
methodsTo compare CSF 5-HIAA levels between patients with MSA and healthy controls, we included 33 controls and 69 MSA patients with either predominant parkinsonian or cerebellar ataxia subtypes. CSF 5-HIAA levels were measured using high-performance liquid chromatography. Additionally, we investigated correlations between CSF 5-HIAA and various clinical indices in 34 MSA patients.
resultsCSF 5-HIAA levels were significantly lower in MSA patients than in controls (p < 0.0001). Probable MSA patients had lower CSF 5-HIAA levels than possible MSA patients (p < 0.001). In MSA patients, CSF 5-HIAA levels were inversely correlated with scores in Parts 1, 2, and 4 of the Unified Multiple System Atrophy Rating Scale, and with systolic and diastolic blood pressure in Part 3. Structural equation modeling revealed significant paths between serotonin and clinical symptoms, and significance was highest for activities of daily living, walking, and body sway.
conclusionsSerotonin dysfunction, as assessed by CSF 5-HIAA levels, may implicate greater MSA severity.
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