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    Depression Biomarkers: Which Ones Matter Most?

    Mental Health
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      KOUSHIN last edited by

      Multiple biomarkers of depression involved in several brain circuits are altered in patients with unipolar depression. The first comprehensive meta-analysis of all biomarkers quantified to date in cerebrospinal fluid (CSF) of individuals with unipolar depression showed that several could be "clinically meaningful" because they suggest neuroimmunological alterations, disturbances in the blood-brain barrier, hyperactivity in the hypothalamic-pituitary-adrenal (HPA) axis, and impaired neuroplasticity as factors in depression pathophysiology. However, said study investigator Michael E. Benros, MD, PhD, professor and head of research at Mental Health Centre Copenhagen and University of Copenhagen, Denmark, this is on a group level. "So in order to be relevant in a clinical context, the results need to be validated by further high-quality studies identifying subgroups with different biological underpinnings," he told Medscape Medical News.

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        TITUMIR @KOUSHIN last edited by

        @koushin The systematic review and meta-analysis included 97 studies investigating 165 CSF biomarkers. Of the 42 biomarkers investigated in at least two studies, patients with unipolar depression had higher CSF levels of interleukin 6, a marker of chronic inflammation; total protein, which signals blood-brain barrier dysfunction and increased permeability; and cortisol, which is linked to psychological stress, compared with healthy controls.

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