Evidence map›Paper›PMID 28258445›Full record

ArticleMetabolic brain disease2017

Physio-somatic symptoms in schizophrenia: association with depression, anxiety, neurocognitive deficits and the tryptophan catabolite pathway.

Buranee Kanchanatawan, Sunee Sirivichayakul, Supaksorn Thika, Kiat Ruxrungtham, André F Carvalho, Michel Geffard, George Anderson, Cristiano Noto, Rada Ivanova, Michael Maes

Abstract read
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In one paragraph

Article in Metabolic brain disease, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 15% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. RDoC Mechanisms Underlying Bodily Symptoms in Psychiatry: A Scoping Review.Psychology research and behavior management · 2026
    Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. PCOS and Depression: Common Links and Potential Targets.Reproductive sciences (Thousand Oaks, Calif.) · 2022
    Review
  15. Review
  16. Article
  17. Review
  18. Review
  19. Article
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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

10 authors at 5 institutions in 4 countries.

Buranee KanchanatawanDepartment of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Sunee SirivichayakulFaculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Supaksorn ThikaDepartment of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Kiat RuxrungthamFaculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
André F CarvalhoDepartment of Clinical Medicine and Translational Psychiatry Research Group, Faculty of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil.
Michel GeffardResearch Department, IDRPHT, Talence, France.
George AndersonCRC Sotland & London, Eccleston Square, London, UK.
Cristiano NotoDepartment of Psychiatry, Universidade Federal de São Paulo (UNIFESP), Rua Pedro de Toledo, 669, 3 andar, CEP 04039-032, Sao Paulo, SP, Brazil.
Rada IvanovaDepartment of Psychiatry, Medical University of Plovdiv, Plovdiv, Bulgaria.
Michael MaesDepartment of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand. dr.michaelmaes@hotmail.com.
Chulalongkorn University · THMedical University Plovdiv · BGInstitut Génétique Nantes Atlantique · FRUniversidade Federal de São Paulo · BRUniversidade Federal do Ceará · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To investigate the frequency of physio-somatic symptoms (PS) symptoms in schizophrenia and their relation to positive, negative and affective symptoms; neurocognitive deficits and impairments in the tryptophan catabolite (TRYCAT) pathway. Eighty four patients with schizophrenia and 40 healthy controls were assessed using the 12 item Fibromyalgia and Chronic Fatigue Syndrome Rating scale (FF) and scales for negative and positive symptoms, depression and anxiety. Cognitive functioning was tested using the Cambridge Neuropsychological Test Automated Battery (CANTAB). Other assessments included: immunoglobulin (Ig)A and IgM responses to tryptophan catabolites (TRYCATs), namely quinolinic (QA), 3-OH-kynurenine (3HK), picolinic (PA), xanthurenic (XA) and kynurenic acid (KA) and anthranilic acid (AA). More than 50% of the patients studied had elevated levels of physio-somatic (PS) symptoms, significantly co-occurring with depression and anxiety, but not with negative or positive symptoms. PS symptoms were significantly associated with IgA/IgM responses to TRYCATs, including increased IgA responses to 3 HK, PA and XA, and lowered IgA to QA and AA. Fatigue, muscle pain and tension, autonomic and cognitive symptoms and a flu-like malaise were strongly associated with cognitive impairments in spatial planning and working memory, paired associative learning, visual sustained attention and attention set shifting. PS symptoms in schizophrenia aggregate with depression and anxiety symptoms and may be driven by TRYCAT patterning of IgA/IgM-responses, with IgA indicating mucosal-mediated changes and IgM indicating regulatory functions. As such, the patterning of IgA/IgM responses to TRYCATs may indicate differential TRYCATs regulation of neuronal and glia activity that act to regulate PS signalling in schizophrenia.

Indexed as

AdolescentAdultAgedAnxietyCognition DisordersDepressionFemaleHumansMaleMiddle AgedSchizophreniaSchizophrenic PsychologySymptom AssessmentTryptophanYoung AdultTryptophanChronic fatigueCytokinesDepressionInflammationLeaky gutNeurocognitive impairments, immuneSchizophrenia

Identifiers

PMID28258445
OpenAlexW2591810884

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.