Large-scale evidence for an association between low-grade peripheral inflammation and brain structural alterations in major depression in the BiDirect study


Journal

Journal of psychiatry & neuroscience : JPN
ISSN: 1488-2434
Titre abrégé: J Psychiatry Neurosci
Pays: Canada
ID NLM: 9107859

Informations de publication

Date de publication:
01 11 2019
Historique:
entrez: 16 7 2019
pubmed: 16 7 2019
medline: 23 6 2020
Statut: ppublish

Résumé

Preliminary research suggests that major depressive disorder (MDD) is associated with structural alterations in the brain; as well as with low-grade peripheral inflammation. However, even though a link between inflammatory processes and altered brain structural integrity has been purported by experimental research, well-powered studies to confirm this hypothesis in patients with MDD have been lacking. We aimed to investigate the potential association between structural brain alterations and low-grade inflammation as interrelated biological correlates of MDD. In this cross-sectional study, 514 patients with MDD and 359 healthy controls underwent structural MRI. We used voxel-based morphometry to study local differences in grey matter volume. We also assessed serum levels of high-sensitivity C-reactive protein (hsCRP) in each participant. Compared with healthy controls (age [mean ± standard deviation] 52.57 ± 7.94 yr; 50% male), patients with MDD (49.14 ± 7.28 yr, 39% male) exhibited significantly increased hsCRP levels (Z = −5.562, p < 0.001) and significantly decreased grey matter volume in the prefrontal cortex and the insula. Prefrontal grey matter volume reductions were significantly associated with higher hsCRP levels in patients with MDD (x = 50, y = 50, z = 8; t1,501 = 5.15; k = 92; pFWE < 0.001). In the MDD sample, the significant negative association between hsCRP and grey matter appeared independent of age, sex, body mass index, current smoking status, antidepressant load, hospitalization and medical comorbidities. This study had a cross-sectional design. The present study highlights the role of reduced grey matter volume and low-grade peripheral inflammation as interrelated biological correlates of MDD. The reported inverse association between peripheral low-grade inflammation and brain structural integrity in patients with MDD translates current knowledge from experimental studies to the bedside.

Sections du résumé

Background
Preliminary research suggests that major depressive disorder (MDD) is associated with structural alterations in the brain; as well as with low-grade peripheral inflammation. However, even though a link between inflammatory processes and altered brain structural integrity has been purported by experimental research, well-powered studies to confirm this hypothesis in patients with MDD have been lacking. We aimed to investigate the potential association between structural brain alterations and low-grade inflammation as interrelated biological correlates of MDD.
Methods
In this cross-sectional study, 514 patients with MDD and 359 healthy controls underwent structural MRI. We used voxel-based morphometry to study local differences in grey matter volume. We also assessed serum levels of high-sensitivity C-reactive protein (hsCRP) in each participant.
Results
Compared with healthy controls (age [mean ± standard deviation] 52.57 ± 7.94 yr; 50% male), patients with MDD (49.14 ± 7.28 yr, 39% male) exhibited significantly increased hsCRP levels (Z = −5.562, p < 0.001) and significantly decreased grey matter volume in the prefrontal cortex and the insula. Prefrontal grey matter volume reductions were significantly associated with higher hsCRP levels in patients with MDD (x = 50, y = 50, z = 8; t1,501 = 5.15; k = 92; pFWE < 0.001). In the MDD sample, the significant negative association between hsCRP and grey matter appeared independent of age, sex, body mass index, current smoking status, antidepressant load, hospitalization and medical comorbidities.
Limitations
This study had a cross-sectional design.
Conclusion
The present study highlights the role of reduced grey matter volume and low-grade peripheral inflammation as interrelated biological correlates of MDD. The reported inverse association between peripheral low-grade inflammation and brain structural integrity in patients with MDD translates current knowledge from experimental studies to the bedside.

Identifiants

pubmed: 31304733
doi: 10.1503/jpn.180208
pmc: PMC6821515
doi:

Substances chimiques

C-Reactive Protein 9007-41-4

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Pagination

423-431

Informations de copyright

© 2019 Joule Inc. or its licensors

Déclaration de conflit d'intérêts

B. Baune is member of advisory boards, received funding and/or gave presentations for AstraZeneca, Lundbeck, Janssen, Pfizer, Servier, and Wyeth, outside the submitted work. No other competing interests declared.

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Auteurs

Nils Opel (N)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Micah Cearns (M)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Scott Clark (S)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Catherine Toben (C)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Dominik Grotegerd (D)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Walter Heindel (W)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Harald Kugel (H)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Anja Teuber (A)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Heike Minnerup (H)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Klaus Berger (K)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Udo Dannlowski (U)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

Bernhard T. Baune (BT)

From the Department of Psychiatry and Psychotherapy, University of Münster, Germany (Opel, Grotegerd, Dannlowski, Baune) the Interdisciplinary Centre for Clinical Research (IZKF), University of Münster, Germany (Opel); the Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia (Cearns, Clark, Toben); the Institute of Clinical Radiology, University of Münster, Germany (Heindel, Kugel); the Institute of Epidemiology and Social Medicine, University of Münster, Germany (Teuber, Minnerup, Berger); the Department of Psychiatry, Melbourne Medical School, the University of Melbourne, Victoria, Australia (Baune); and the Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia (Baune).

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