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Immunoinflammatory and oxidative alterations in subjects with schizophrenia under clozapine: A meta-analysis

Martins, Paulo Levi Bezerra ; Moura, Ian Araújo ; Mendes, Gabrielle ; Ribeiro, Vitória Cristina Almeida Flexa ; Arnaud, André ; Gama, Clarissa S. ; Maes, Michael ; Macedo, Danielle S. ; Pinto, Joel Porfirio

European neuropsychopharmacology, 2023-08, Vol.73, p.82-95 [Periódico revisado por pares]

Netherlands: Elsevier B.V

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  • Título:
    Immunoinflammatory and oxidative alterations in subjects with schizophrenia under clozapine: A meta-analysis
  • Autor: Martins, Paulo Levi Bezerra ; Moura, Ian Araújo ; Mendes, Gabrielle ; Ribeiro, Vitória Cristina Almeida Flexa ; Arnaud, André ; Gama, Clarissa S. ; Maes, Michael ; Macedo, Danielle S. ; Pinto, Joel Porfirio
  • Assuntos: Antipsychotic Agents - adverse effects ; Clozapine ; Clozapine - adverse effects ; Compensatory Immune Response System ; Cytokines ; Humans ; Inflammatory Response System ; Interleukin-6 ; Meta-analysis ; Oxidative Stress ; Psychotic disorders ; Schizophrenia - drug therapy
  • É parte de: European neuropsychopharmacology, 2023-08, Vol.73, p.82-95
  • Notas: SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    ObjectType-Review-1
    ObjectType-Article-3
    ObjectType-Undefined-4
  • Descrição: Clozapine presents immunoregulatory properties not well understood. To address this issue, we performed this systematic review to evaluate the immune alterations induced by clozapine and its relationship with the drug's clinical response and compare it with other antipsychotics. Our systematic review has selected nineteen studies meeting the inclusion criteria, from which eleven were included in the meta-analysis, totalizing 689 subjects distributed over three different comparisons. The results revealed that clozapine treatment activates the compensatory immune-regulatory system (CIRS) (Hedges's g = +1.049; CI +0.62 – +1.47, p < 0.001) but has no effects on the immune-Inflammatory Response System (IRS) (Hedges's g= -0.27; CI -1.76 – +1.22, p = 0.71), M1 macrophage (Hedges's g= -0.32; CI -1.78 – +1.14, p = 0.65) and Th1 (Hedge's g = 0.86; CI -0.93 – +1.814, p = 0.07) profiles. Comparing clozapine-treated patients with other anti-psychotics-treated, plasma levels of interleukin (IL)-6 were greater in the clozapine group (Hedge's g = 0.75; CI 0.35 - 1.15, p<0.001). In addition, higher IL-6 plasma levels after four weeks of clozapine treatment were related to the development of clozapine-induced fever; however, IL-6 levels recovered to baseline in 6–10 weeks due to an unexplained compensatory mechanism. In conclusion, our results show that clozapine treatment causes a time-dependent mixed immune profile characterized by increased IL-6 levels and CIRS activation, which may contribute to this drug mechanism of action and adverse effects. Future studies must be designed to investigate the relationship between clozapine-induced immune alterations and symptom remission, treatment resistance, and adverse effects, given the importance of this drug for treating resistant schizophrenia.
  • Editor: Netherlands: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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