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Bravi B, Melloni EMT, Paolini M, Palladini M, Calesella F, Servidio L, Agnoletto E, Poletti S, Lorenzi C, Colombo C, Benedetti F. Choroid plexus volume is increased in mood disorders and associates with circulating inflammatory cytokines. Brain Behav Immun 2024; 116:52-61. [PMID: 38030049 DOI: 10.1016/j.bbi.2023.11.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 11/17/2023] [Accepted: 11/26/2023] [Indexed: 12/01/2023] Open
Abstract
Depressed patients exhibit altered levels of immune-inflammatory markers both in the peripheral blood and in the cerebrospinal fluid (CSF) and inflammatory processes have been widely implicated in the pathophysiology of mood disorders. The Choroid Plexus (ChP), located at the base of each of the four brain ventricles, regulates the exchange of substances between the blood and CSF and several evidence supported a key role for ChP as a neuro-immunological interface between the brain and circulating immune cells. Given the role of ChP as a regulatory gate between periphery, CSF spaces and the brain, we compared ChP volumes in patients with bipolar disorder (BP) or major depressive disorder (MDD) and healthy controls, exploring their association with history of illness and levels of circulating cytokines. Plasma levels of inflammatory markers and MRI scans were acquired for 73 MDD, 79 BD and 72 age- and sex-matched healthy controls (HC). Patients with either BD or MDD had higher ChP volumes than HC. With increasing age, the bilateral ChP volume was larger in patients, an effect driven by the duration of illness; while only minor effects were observed in HC. Right ChP volumes were proportional to higher levels of circulating cytokines in the clinical groups, including IFN-γ, IL-13 and IL-17. Specific effects in the two diagnostic groups were observed when considering the left ChP, with positive association with IL-1ra, IL-13, IL-17, and CCL3 in BD, and negative associations with IL-2, IL-4, IL-1ra, and IFN-γ in MDD. These results suggest that ChP could represent a reliable and easy-to-assess biomarker to evaluate the brain effects of inflammatory status in mood disorders, contributing to personalized diagnosis and tailored treatment strategies.
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Affiliation(s)
- Beatrice Bravi
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy; PhD Program in Cognitive Neuroscience, University Vita-Salute San Raffaele, Milan, Italy.
| | - Elisa Maria Teresa Melloni
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy; University Vita-Salute San Raffaele, Milan, Italy
| | - Marco Paolini
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy; PhD Program in Molecular Medicine, University Vita-Salute San Raffaele, Milan, Italy
| | - Mariagrazia Palladini
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy; PhD Program in Cognitive Neuroscience, University Vita-Salute San Raffaele, Milan, Italy
| | - Federico Calesella
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy; PhD Program in Cognitive Neuroscience, University Vita-Salute San Raffaele, Milan, Italy
| | - Laura Servidio
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy
| | - Elena Agnoletto
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy
| | - Sara Poletti
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy; University Vita-Salute San Raffaele, Milan, Italy
| | - Cristina Lorenzi
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy
| | - Cristina Colombo
- University Vita-Salute San Raffaele, Milan, Italy; Mood Disorders Unit, IRCCS Scientific Institute Ospedale San Raffaele, Milano, Italy
| | - Francesco Benedetti
- Psychiatry & Clinical Psychobiology, Division of Neuroscience, IRCCS Scientific Institute San Raffaele Hospital, Milan, Italy; University Vita-Salute San Raffaele, Milan, Italy
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