Cited by 197Tryptophan and brain disordersTreatment of Major DepressionStress Responses and Cortisol

Peripheral Markers of Depression

Open access
Nobis, Aleksander, Zalewski, Daniel, Waszkiewicz, Napoleon·2020·Journal of Clinical Medicine

Abstract

Major Depressive Disorder (MDD) is a leading cause of disability worldwide, creating a high medical and socioeconomic burden. There is a growing interest in the biological underpinnings of depression, which are reflected by altered levels of biological markers. Among others, enhanced inflammation has been reported in MDD, as reflected by increased concentrations of inflammatory markers—C-reactive protein, interleukin-6, tumor necrosis factor-α and soluble interleukin-2 receptor. Oxidative and nitrosative stress also plays a role in the pathophysiology of MDD. Notably, increased levels of lipid peroxidation markers are characteristic of MDD. Dysregulation of the stress axis, along with increased cortisol levels, have also been reported in MDD. Alterations in growth factors, with a significant decrease in brain-derived neurotrophic factor and an increase in fibroblast growth factor-2 and insulin-like growth factor-1 concentrations have also been found in MDD. Finally, kynurenine metabolites, increased glutamate and decreased total cholesterol also hold promise as reliable biomarkers for MDD. Research in the field of MDD biomarkers is hindered by insufficient understanding of MDD etiopathogenesis, substantial heterogeneity of the disorder, common co-morbidities and low specificity of biomarkers. The construction of biomarker panels and their evaluation with use of new technologies may have the potential to overcome the above mentioned obstacles.

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  • In medical research, depression is often conceptualized as a clinical disorder with a specific set of symptoms that can be identified and treated.

    “In medical research, depression is often conceptualized as a clinical disorder with a specific set of symptoms that can be identified and treated (4, 5).”
  • Recent evidence suggests a possible role of immune dysregulation in the etiopathogenesis of depression.

    “Furthermore, recent evidence suggested a possible role of immune dysregulation in the etiopathogenesis of depression [13,14,15,16].”

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Authors
Nobis, A., Zalewski, D., & Waszkiewicz, N.
Affiliations
Medical University of Białystok (PL)
Corresponding author
Nobis, Aleksander
Venue
Journal of Clinical Medicine
Publisher
MDPI AG
Published
2020-11-24
Volume
9
Issue
12
Pages
3793
ISSN
2077-0383 (ISSN-L)
OpenAlex
W3109252124
Cited by
197
References
457
Citations by year
2026: 17 · 2025: 41 · 2024: 34 · 2023: 43 · 2022: 44 · 2021: 18
FWCI
1.69
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Medicine (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
Uniwersytet Medyczny w Białymstoku (SUB/1/DN/20/002/1147)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
major depressive disorder, biomarkers, peripheral biomarkers, inflammation, C-reactive protein, interleukin-6, TNF-α, soluble interleukin-2 receptor, oxidative stress, lipid peroxidation, cortisol, hypothalamic-pituitary-adrenal axis, brain-derived neurotrophic factor, fibroblast growth factor 2, insulin-like growth factor I, kynurenine metabolites, glutamate, total cholesterol, biomarker panel

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