Evidence map›Paper›PMID 33289195›Full record

SynthesisMovement disorders : official journal of the Movement Disorder Society2021

Neuroimaging of Anxiety in Parkinson's Disease: A Systematic Review.

Guillaume Carey, Meltem Görmezoğlu, Joost J A de Jong, Paul A M Hofman, Walter H Backes, Kathy Dujardin, Albert F G Leentjens

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in Movement disorders : official journal of the Movement Disorder Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
101citing papers in PubMed, 3 pooled it
5.9field-weighted citation impact, top 3% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

101 citing papers in PubMed, 3 syntheses or guidelines pooled it, 152 citations in OpenAlex.

  1. Management of Anxiety in Parkinson's Disease.Movement disorders clinical practice · 2025
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Monoaminergic Networks of Cognitive and Behavioral Symptoms in Early Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Non-motor correlates of anxiety inFrontiers in neuroscience · 2026
    Article
  18. Article
  19. A Network Centered on the Visual-Motor Cortex Is Critically Involved in Postural Abnormality in Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  20. Article

41 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 3 countries.

Guillaume CareySchool for Mental Health and Neurosciences (MHeNS), Maastricht University, Maastricht, the Netherlands.ORCID 0000-0003-0793-8205
Meltem GörmezoğluDepartment of Psychiatry, Maastricht University Medical Center, Maastricht, the Netherlands.
Joost J A de JongSchool for Mental Health and Neurosciences (MHeNS), Maastricht University, Maastricht, the Netherlands.
Paul A M HofmanSchool for Mental Health and Neurosciences (MHeNS), Maastricht University, Maastricht, the Netherlands.
Walter H BackesSchool for Mental Health and Neurosciences (MHeNS), Maastricht University, Maastricht, the Netherlands.
Kathy DujardinUniversité de Lille, Inserm, CHU Lille, Lille Neurosciences and Cognition, Lille, France.ORCID 0000-0002-0110-574X
Albert F G LeentjensSchool for Mental Health and Neurosciences (MHeNS), Maastricht University, Maastricht, the Netherlands.
Maastricht University · NLInserm · FROndokuz Mayıs University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of this systematic review was (1) to identify the brain regions involved in anxiety in Parkinson's disease (PD) based on neuroimaging studies and (2) to interpret the findings against the background of dysfunction of the fear circuit and limbic cortico-striato-thalamocortical circuit.

methodsStudies assessing anxiety symptoms in PD patients and studies using magnetic resonance imaging, positron emission tomography, or single-photon emission computed tomography were included.

resultsThe severity of anxiety was associated with changes in the fear circuit and the cortico-striato-thalamocortical limbic circuit. In the fear circuit, a reduced gray-matter volume of the amygdala and the anterior cingulate cortex (ACC); an increased functional connectivity (FC) between the amygdala and orbitofrontal cortex (OFC) and hippocampus and between the striatum and the medial prefrontal cortex (PFC), temporal cortex, and insula; and a reduced FC between the lateral PFC and the OFC, hippocampus, and amygdala were reported. In the cortico-striato-thalamocortical limbic circuit, a reduced FC between the striatum and ACC; a reduced dopaminergic and noradrenergic activity in striatum, thalamus, and locus coeruleus; and a reduced serotoninergic activity in the thalamus were reported.

conclusionTo conclude, anxiety is associated with structural and functional changes in both the hypothesized fear and the limbic cortico-striato-thalamocortical circuits. These circuits overlap and may well constitute parts of a more extensive pathway, of which different parts play different roles in anxiety. The neuropathology of PD may affect these circuits in different ways, explaining the high prevalence of anxiety in PD and also the associated cognitive, motor, and psychiatric symptoms. © 2020 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.

Indexed as

Parkinson DiseaseAmygdalaAnxietyAnxiety DisordersHumansMagnetic Resonance ImagingNeuroimaginganxietyfear circuitimaginglimbic circuitParkinson's disease

Identifiers

PMID33289195
PMCPMC7984351
OpenAlexW3107973581

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.