Oxidative alterations in exfoliated oral mucosa cells of patients with major depressive disorder

Objectives: This study aimed to investigate oxidative stress markers in the oral mucosal cells of individuals diagnosed with major depressive disorder (MDD). Methods: A case-control design was used, including twenty patients diagnosed with MDD, based on the Diagnostic and Statistical Manual of Menta...

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Main Authors: Lukas Mendes de Abreu, Cintia Rodrigues da Silva, Ana Laura Ferreira Bortoleto, Giovana Barros Nunes, Matheus Martins Gracia, Rafael Akira Tzanno Murayama, Daniel Galera Bernabé, Gisele Zoccal Mingoti
Format: Article
Language:English
Published: Elsevier 2025-03-01
Series:Journal of Oral Biology and Craniofacial Research
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Online Access:http://www.sciencedirect.com/science/article/pii/S2212426825000284
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Summary:Objectives: This study aimed to investigate oxidative stress markers in the oral mucosal cells of individuals diagnosed with major depressive disorder (MDD). Methods: A case-control design was used, including twenty patients diagnosed with MDD, based on the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria, and twenty healthy controls. Oral exfoliated cells were collected from all participants. Intracellular levels of reactive oxygen species (ROS), mitochondrial membrane potential (ΔΨm), caspase-3 and -7 activity, and reduced glutathione (GSH) were measured in Arbitrary Fluorescence Units (AFU). Results: The MDD group demonstrated significantly elevated intracellular ROS levels (p = 0.0012) and caspase-3 and -7 activity (p = 0.0171) in comparison to the control group. Additionally, a decrease in ΔΨm expression was observed in the oral cells of MDD patients (p = 0.0265), whereas GSH expression levels did not differ significantly between the two groups (p = 0.8908). Conclusions: The findings indicate heightened oxidative stress in the oral exfoliated cells of individuals with MDD. This study supports the potential use of oral cells as a non-invasive biomarker source for assessing oxidative stress in depressive disorders.
ISSN:2212-4268