Evidence map›Paper›PMID 34982515›Full record

ArticleTrends in psychiatry and psychotherapy

Oxidative stress biomarkers in treatment-responsive and treatment-resistant schizophrenia patients.

Patrick Buosi, Fábio Aparecido Borghi, Angélica Marta Lopes, Isabela da Silva Facincani, Rafael Fernandes-Ferreira, Camila Ive Ferreira Oliveira-Brancati, Tayanne Silva do Carmo, Dorotéia Rossi Silva Souza, Danilo Grünig Humberto da Silva, Eduardo Alves de Almeida and 1 more

Open access · diamondAbstract read
In one paragraph

Article in Trends in psychiatry and psychotherapy. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 17% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

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  17. Variations to plasma HSchizophrenia (Heidelberg, Germany) · 2024
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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

11 authors at 4 institutions in 1 country.

Patrick BuosiHospital de Base, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto, SP, Brazil. FAMERP, São José do Rio Preto, SP, Brazil.
Fábio Aparecido BorghiHospital de Base, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto, SP, Brazil. FAMERP, São José do Rio Preto, SP, Brazil.
Angélica Marta LopesFAMERP, São José do Rio Preto, SP, Brazil.
Isabela da Silva FacincaniFAMERP, São José do Rio Preto, SP, Brazil.
Rafael Fernandes-FerreiraUniversidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil. Universidade Paulista (UNIP), São José do Rio Preto, SP, Brazil.
Camila Ive Ferreira Oliveira-BrancatiFAMERP, São José do Rio Preto, SP, Brazil.
Tayanne Silva do CarmoFAMERP, São José do Rio Preto, SP, Brazil.
Dorotéia Rossi Silva SouzaFAMERP, São José do Rio Preto, SP, Brazil.
Danilo Grünig Humberto da SilvaInstituto de Biociencias Letras e Ciencias Exatas Campus de São José do Rio Preto (IBILCE), Universidade Estadual Paulista, São José do Rio Preto Campus (UNESP), São José do Rio Preto, SP, Brazil.
Eduardo Alves de AlmeidaDepartamento de Ciências Naturais, Universidade Regional de Blumenau (FURB), Blumenau, SC, Brazil.
Gerardo Maria de Araújo FilhoHospital de Base, Faculdade de Medicina de São José do Rio Preto (FAMERP), São José do Rio Preto, SP, Brazil. FAMERP, São José do Rio Preto, SP, Brazil.
Faculdade de Medicina de São José do Rio Preto · BRCentro Universitário de Rio Preto · BRUniversidade Estadual de Campinas (UNICAMP) · BRUniversidade Regional de Blumenau · BR

Funding

Centro de Pesquisa Biomédica em Processos Redox 2013/07937-8Fundação de Amparo à Pesquisa de Estado de São Paulo 2015/2598-2
6 · The paper itself

Abstract

introductionSchizophrenia is a complex psychiatric disorder that affects approximately twenty million people worldwide. Various factors have been associated with the physiopathology of this disease such as oxidative stress, which is an imbalance between pro-oxidant and antioxidant molecules.

objectiveThis study evaluated the association between biomarkers of oxidative stress and response to pharmacological treatment among patients with schizophrenia in the context of their clinical information, demographic data, and lifestyle.

methodsA total of 89 subjects were included, 26 of whom were treatment-responsive schizophrenia patients (Group 1), 27 treatment-resistant schizophrenia patients (Group 2), and 36 healthy controls (Group 3). All of the subjects completed a questionnaire to provide clinical and demographic data, and all provided peripheral blood samples. The oxidative stress markers analyzed using spectrophotometry were catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), total glutathione (GSH-t), malondialdehyde (MDA), and Trolox-equivalent antioxidant capacity (TEAC; p < 0.05).

resultsWhen all schizophrenia patients (G1 + G2) were compared to the control group, SOD levels were found to be lower among schizophrenia patients (p < 0.0001), while MDA and CAT levels were higher (p < 0.0001 and p = 0.0191, respectively). GPx, GSH-t, and TEAC levels were similar in all three groups (p > 0.05).

conclusionLower SOD levels and higher MDA and CAT levels indicate oxidative damage in schizophrenia patients, regardless of their response to pharmacological treatment. Smoking is associated with oxidative stress, in addition, a family history of the disease was also found to be correlated with cases of schizophrenia, which reflects the relevance of genetics in disease development.

Indexed as

SchizophreniaBiomarkersGlutathione PeroxidaseHumansOxidative StressSchizophrenia, Treatment-ResistantBiomarkersGlutathione Peroxidaseantioxidantsfree radicalsoxidative stressPsychotic disorderstreatment resistance

Identifiers

PMID34982515
PMCPMC8835384
OpenAlexW3120046642

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.