Carolina David Wiener1, Fernanda Pedrotti Moreira2, Luis Valmor Portela3, Nathan R Strogulski3, Diogo R Lara4, Ricardo Azevedo da Silva5, Luciano Dias de Mattos Souza5, Karen Jansen5, Jean Pierre Oses6. 1. Translational Science on Brain Disorders, Clinical Neuroscience Laboratory, Department of Health and Behavior, Catholic University of Pelotas, Rua Gonçalves Chaves, 373-Sala 418C, CEP: 96015-560, RS, Brazil; Anhanguera College of Rio Grande, RS, Brazil. 2. Translational Science on Brain Disorders, Clinical Neuroscience Laboratory, Department of Health and Behavior, Catholic University of Pelotas, Rua Gonçalves Chaves, 373-Sala 418C, CEP: 96015-560, RS, Brazil. Electronic address: fepedrotti@gmail.com. 3. Neurotrauma Laboratory, Department of Biochemistry, Institute of Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. 4. Neurochemistry and Psychopharmacology Laboratory, Cellular and Molecular Biology Department, Faculty of Bioscience, Pontifical Catholic University of Rio Grande do Sul (PUC-RS), Porto Alegre, RS, Brazil. 5. Translational Science on Brain Disorders, Clinical Neuroscience Laboratory, Department of Health and Behavior, Catholic University of Pelotas, Rua Gonçalves Chaves, 373-Sala 418C, CEP: 96015-560, RS, Brazil. 6. Translational Science on Brain Disorders, Clinical Neuroscience Laboratory, Department of Health and Behavior, Catholic University of Pelotas, Rua Gonçalves Chaves, 373-Sala 418C, CEP: 96015-560, RS, Brazil; Technology Application in Neurosciences, Department of Electronic Engineering and Computer, Catholic University of Pelotas, RS, Brazil.
Abstract
OBJECTIVE: The aim of this study was to assess if cytokines levels (IL-6 and IL-10) are related to major depressive disorder (MDD) and bipolar disorder (BD), in a population-based study. METHODS: This was a cross-sectional study population-based, involving 1037 people aged 18-35. MDD, BD, anxiety and suicide risk were assessed using the Mini International Neuropsychiatric Interview. Serum IL-6 and IL-10 were measured by ELISA using a commercial kit. RESULTS: The total sample comprised 1034 young adults, being 14.4% with MDD and 13.7% with BD. MDD and BD groups showed significantly higher serum IL-6 levels (p ≤ 0.001) and IL-10 levels (p ≤ 0.001) when compared to healthy control group. No correlation was found between serum IL-6 and IL-10 levels in health control group (p = 0.830; r = -0.008), non-suicide risk (p = 0.337; r = 0.032) and non-anxiety disorder (p = 0.375; r = 0.031). Covariance analysis showed that mood disorders alone, increase both interleukin levels (IL-6, p = 0.019; and IL-10, p = 0.026), whilst the interaction of mood disorders and suicide risk or anxiety disorders did not. CONCLUSION: Our results suggest that inflammatory dysregulation may be involved in the physiopathology of mood disorders and serum IL-6 and IL-10 levels are putative biomarkers for these disorders.
OBJECTIVE: The aim of this study was to assess if cytokines levels (IL-6 and IL-10) are related to major depressive disorder (MDD) and bipolar disorder (BD), in a population-based study. METHODS: This was a cross-sectional study population-based, involving 1037 people aged 18-35. MDD, BD, anxiety and suicide risk were assessed using the Mini International Neuropsychiatric Interview. Serum IL-6 and IL-10 were measured by ELISA using a commercial kit. RESULTS: The total sample comprised 1034 young adults, being 14.4% with MDD and 13.7% with BD. MDD and BD groups showed significantly higher serum IL-6 levels (p ≤ 0.001) and IL-10 levels (p ≤ 0.001) when compared to healthy control group. No correlation was found between serum IL-6 and IL-10 levels in health control group (p = 0.830; r = -0.008), non-suicide risk (p = 0.337; r = 0.032) and non-anxiety disorder (p = 0.375; r = 0.031). Covariance analysis showed that mood disorders alone, increase both interleukin levels (IL-6, p = 0.019; and IL-10, p = 0.026), whilst the interaction of mood disorders and suicide risk or anxiety disorders did not. CONCLUSION: Our results suggest that inflammatory dysregulation may be involved in the physiopathology of mood disorders and serum IL-6 and IL-10 levels are putative biomarkers for these disorders.
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