Evidence map›Paper›PMID 32612207›Full record

ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2020

The role of dopamine dysregulation and evidence for the transdiagnostic nature of elevated dopamine synthesis in psychosis: a positron emission tomography (PET) study comparing schizophrenia, delusional disorder, and other psychotic disorders.

Pak Wing Calvin Cheng, Wing Chung Chang, Gladys G Lo, Kit Wa Sherry Chan, Ho Ming Edwin Lee, Lai Ming Christy Hui, Yi Nam Suen, Yim Lung Eric Leung, Kai Ming Paul Au Yeung, Sirong Chen and 7 more

Open access · bronzeAbstract read
In one paragraph

Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
3.5field-weighted citation impact, top 6% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 37 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Article
  6. Dopamine DPsychological medicine · 2025
    Article
  7. Radiomic Analysis of Striatal [Molecular imaging and biology · 2025
    Article
  8. Article
  9. Review
  10. Article
  11. Psychosomatic Disorder: The Current Implications and Challenges.Cardiovascular & hematological agents in medicinal chemistry · 2024
    Review
  12. The Placebo Effect in Psychosis: Why It Matters and How to Measure It.Biological psychiatry global open science · 2023
    Review
  13. An automatic analysis framework for FDOPA PET neuroimaging.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2023
    Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
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  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

17 authors at 4 institutions in 3 countries.

Pak Wing Calvin ChengDepartment of Psychiatry, The University of Hong Kong, Hong Kong, China.ORCID http://orcid.org/0000-0003-4457-1908
Wing Chung ChangDepartment of Psychiatry, The University of Hong Kong, Hong Kong, China.
Gladys G LoHong Kong Sanatorium & Hospital, Hong Kong, China.
Kit Wa Sherry ChanDepartment of Psychiatry, The University of Hong Kong, Hong Kong, China.
Ho Ming Edwin LeeDepartment of Psychiatry, The University of Hong Kong, Hong Kong, China.
Lai Ming Christy HuiDepartment of Psychiatry, The University of Hong Kong, Hong Kong, China.
Yi Nam SuenDepartment of Psychiatry, The University of Hong Kong, Hong Kong, China.ORCID http://orcid.org/0000-0003-2766-8476
Yim Lung Eric LeungHong Kong Sanatorium & Hospital, Hong Kong, China.
Kai Ming Paul Au YeungHong Kong Sanatorium & Hospital, Hong Kong, China.
Sirong ChenHong Kong Sanatorium & Hospital, Hong Kong, China.
Ka Fung Henry MakDepartment of Diagnostic Radiology, The University of Hong Kong, Hong Kong, China.
Pak Chung ShamDepartment of Psychiatry, The University of Hong Kong, Hong Kong, China.
Barbara SantangeloPsychosis Studies Department, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.
Mattia VeroneseDepartment of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.ORCID http://orcid.org/0000-0003-3562-0683
Chi-Lai HoHong Kong Sanatorium & Hospital, Hong Kong, China.
Yu Hai Eric ChenDepartment of Psychiatry, The University of Hong Kong, Hong Kong, China. eyhchen@hku.hk.
Oliver D HowesPsychosis Studies Department, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.
University of Hong Kong · HKHong Kong Sanatorium and Hospital · HKKing's College London · GBHong Kong Virtual University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There have been few studies performed to examine the pathophysiological differences between different types of psychosis, such as between delusional disorder (DD) and schizophrenia (SZ). Notably, despite the different clinical characteristics of DD and schizophrenia (SZ), antipsychotics are deemed equally effective pharmaceutical treatments for both conditions. In this context, dopamine dysregulation may be transdiagnostic of the pathophysiology of psychotic disorders such as DD and SZ. In this study, an examination is made of the dopamine synthesis capacity (DSC) of patients with SZ, DD, other psychotic disorders, and the DSC of healthy subjects. Fifty-four subjects were recruited to the study, comprising 35 subjects with first-episode psychosis (11 DD, 12 SZ, 12 other psychotic disorders) and 19 healthy controls. All received an

Indexed as

Antipsychotic AgentsPsychotic DisordersDopamineHumansPositron-Emission TomographySchizophrenia, ParanoidAntipsychotic AgentsDopamine

Identifiers

PMID32612207
PMCPMC7608388
OpenAlexW3039870409

What OpenQuestion holds

Textmetadata
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.