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Maier HB, Stadler J, Deest-Gaubatz S, Borlak F, Türker SN, Konen FF, Seifert J, Kesen C, Frieling H, Bleich S, Lüdecke D, Gallinat J, Hansen N, Wiltfang J, Skripuletz T, Neyazi A. The significance of cerebrospinal fluid analysis in the differential diagnosis of 564 psychiatric patients: Multiple sclerosis is more common than autoimmune-encephalitis. Psychiatry Res 2024; 333:115725. [PMID: 38219347 DOI: 10.1016/j.psychres.2024.115725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/14/2023] [Accepted: 01/06/2024] [Indexed: 01/16/2024]
Abstract
The analysis of cerebrospinal fluid (CSF) is an essential tool for the differential diagnosis of psychiatric disorders caused by autoimmune inflammation or infections. Clear guidelines for CSF analysis are limited and mainly available for schizophrenia and dementia. Thus, insights into CSF changes in psychiatric patients largely derive from research. We analyzed the clinical and CSF data of 564 psychiatric patients without pre-existing neurological diagnoses from March 1998 to April 2020. Primary aim was to detect previously undiagnosed neurological conditions as underlying cause for the psychiatric disorder. Following CSF analysis, 8 % of patients (47/564) were diagnosed with a neurological disorder. This was the case in 12.0 % (23/193) of patients with affective disorders, 7.2 % (19/262) of patients with schizophrenia, and 4.0 % (23/193) of patients with anxiety disorders. The predominant new diagnoses were multiple sclerosis (19/47) and autoimmune encephalitis (10/47). Abnormal CSF findings without any implications for further treatment were detected in 17.0 % (94/564) of patients. Our data indicates that CSF analysis in patients suffering from psychiatric disorders may uncover underlying organic causes, most commonly multiple sclerosis and autoimmune encephalitis. Our findings imply that the incorporation of CSF analysis in routine psychiatric assessments is potentially beneficial.
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Affiliation(s)
- Hannah Benedictine Maier
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany.
| | - Jan Stadler
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany
| | - Stephanie Deest-Gaubatz
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany
| | - Francesca Borlak
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany
| | - Seda Nur Türker
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany
| | - Franz Felix Konen
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany; Department of Neurology, Hannover Medical School (MHH), Hannover, Germany
| | - Johanna Seifert
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany
| | - Cagla Kesen
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany
| | - Helge Frieling
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany; Laboratory for Molecular Neuroscience, Department of Psychiatry, Social Psychiatry, and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Stefan Bleich
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School (MHH), Carl-Neuberg-Str. 1, Hannover 30625, Germany; Laboratory for Molecular Neuroscience, Department of Psychiatry, Social Psychiatry, and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Daniel Lüdecke
- Department of Psychiatry and Psychotherapy, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Jürgen Gallinat
- Department of Psychiatry and Psychotherapy, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Niels Hansen
- Department of Psychiatry and Psychotherapy, University Medical Center Goettingen, Germany
| | - Jens Wiltfang
- Department of Psychiatry and Psychotherapy, University Medical Center Goettingen, Germany
| | - Thomas Skripuletz
- Department of Neurology, Hannover Medical School (MHH), Hannover, Germany
| | - Alexandra Neyazi
- Laboratory for Molecular Neuroscience, Department of Psychiatry, Social Psychiatry, and Psychotherapy, Hannover Medical School, Hannover, Germany; Department of Psychiatry and Psychotherapy, Otto von Guericke University Magdeburg (OVGU), Germany
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2
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Gonçalves de Andrade E, González Ibáñez F, Tremblay MÈ. Microglia as a Hub for Suicide Neuropathology: Future Investigation and Prevention Targets. Front Cell Neurosci 2022; 16:839396. [PMID: 35663424 PMCID: PMC9158339 DOI: 10.3389/fncel.2022.839396] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 02/22/2022] [Indexed: 12/27/2022] Open
Abstract
Suicide is a complex public health challenge associated worldwide with one death every 40 s. Research advances in the neuropathology of suicidal behaviors (SB) have defined discrete brain changes which may hold the key to suicide prevention. Physiological differences in microglia, the resident immune cells of the brain, are present in post-mortem tissue samples of individuals who died by suicide. Furthermore, microglia are mechanistically implicated in the outcomes of important risk factors for SB, including early-life adversity, stressful life events, and psychiatric disorders. SB risk factors result in inflammatory and oxidative stress activities which could converge to microglial synaptic remodeling affecting susceptibility or resistance to SB. To push further this perspective, in this Review we summarize current areas of opportunity that could untangle the functional participation of microglia in the context of suicide. Our discussion centers around microglial state diversity in respect to morphology, gene and protein expression, as well as function, depending on various factors, namely brain region, age, and sex.
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Affiliation(s)
- Elisa Gonçalves de Andrade
- Neuroscience Graduate Program, Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Fernando González Ibáñez
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
- Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Québec City, QC, Canada
| | - Marie-Ève Tremblay
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
- Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Québec City, QC, Canada
- Department of Neurology and Neurosurgery, McGill University, Montréal, QC, Canada
- Department of Molecular Medicine, Université Laval, Québec City, QC, Canada
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, BC, Canada
- *Correspondence: Marie-Ève Tremblay,
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Effects of stress on endophenotypes of suicide across species: A role for ketamine in risk mitigation. Neurobiol Stress 2022; 18:100450. [PMID: 35685678 PMCID: PMC9170747 DOI: 10.1016/j.ynstr.2022.100450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/05/2022] [Accepted: 04/15/2022] [Indexed: 12/28/2022] Open
Abstract
Suicide is a leading cause of death and morbidity worldwide, yet few interventions are available to mitigate its risk. Barriers to effective treatments involve a limited understanding of factors that predict the onset of suicidal thoughts and behaviors. In the context of suicide risk, stress is a precipitating factor that is largely overlooked in the literature. Indeed, the pathophysiology of stress and suicide are heavily interconnected, underscoring the need to target the stress system in suicide prevention. In this review, we integrate findings from the preclinical and clinical literature that links stress and suicide. We focus specifically on the effects of stress on underlying biological functions and processes associated with suicide, allowing for the review of research using animal models. Owing to the rapid anti-suicidal effects of (R,S)-ketamine, we discuss its ability to modulate various stress-related endophenotypes of suicide, as well as its potential role in preventing suicide in those with a history of chronic life stress (e.g., early life adversity). We highlight future research directions that could advance our understanding of stress-related effects on suicide risk, advocating a dimensional, endophenotype approach to suicide research. Suicide and chronic stress pathophysiology are interconnected. Chronic stress has profound impacts on several endophenotypes of suicide. Animal and human research points to stress as a precipitating factor in suicide. Ketamine modulates specific biological processes associated with stress and suicide. Suicide research into endophenotypes can help inform risk-mitigation strategies.
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Mathew B, Srinivasan K, Pradeep J, Thomas T, Murthy SK, Mandal AK. Downregulation of apolipoprotein A-IV in plasma & impaired reverse cholesterol transport in individuals with recent acts of deliberate self-harm. Indian J Med Res 2020; 150:365-375. [PMID: 31823918 PMCID: PMC6902365 DOI: 10.4103/ijmr.ijmr_1842_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background & objectives: The major limiting factor in the prevention of suicide is the limited knowledge on molecular insights in individuals at risk. Identification of peripheral protein markers which can classify individuals at high-risk of suicide might aid in early diagnosis and effective medical intervention. The aim of the present study was, therefore, to analyze the differential regulation of plasma proteins in individuals with deliberate self-harm compared to controls. Methods: Using two-dimensional gel electrophoresis coupled with matrix-assisted laser desorption-ionization mass spectrometry, differentially expressed plasma proteins were identified in study participants with deliberate self-harm compared to age- and gender-matched controls. The finding was validated using mass spectrometry-based isotope-labelled relative quantification and Western blot analysis in a new set of individuals with deliberate self-harm and controls. Results: The plasma proteomic analysis showed that apolipoprotein A-IV (Apo A-IV) was downregulated by 2.63-fold (confidence interval: 1.52-4.54) in individuals with deliberate self-harm (n=10) compared to matched controls, which was consistent in mass spectrometry-based relative quantification and Western blot analysis performed in an independent set of individuals with deliberate self-harm (n=18). In addition, plasma levels of total cholesterol, esterified cholesterol and high-density lipoprotein (HDL) were observed to be significantly lower individuals with deliberate self-harm compared to controls. Interpretation & conclusions: Apo A-IV, which plays a crucial role in the esterification of free cholesterol, was found to be downregulated with concomitantly decreased levels of HDL, esterified cholesterol and total cholesterol in individuals with deliberate self-harm compared to matched controls. The present findings might provide a link between the differential regulation of plasma proteins and the previously reported results on altered cholesterol levels in individuals with deliberate self-harm.
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Affiliation(s)
- Boby Mathew
- Division of Molecular Medicine, Clinical Proteomics Unit, St. John's Research Institute, St. John's National Academy of Health Sciences, Bengaluru, Karnataka, India
| | - Krishnamachari Srinivasan
- Department of Psychiatry, St. Johns Medical College, St. John's National Academy of Health Sciences, Bengaluru, Karnataka, India
| | - Johnson Pradeep
- Department of Psychiatry, St. Johns Medical College, St. John's National Academy of Health Sciences, Bengaluru, Karnataka, India
| | - Tinku Thomas
- Department of Biostatistics, St. Johns Medical College, St. John's National Academy of Health Sciences, Bengaluru, Karnataka, India
| | - Shakuntala Kandikuppa Murthy
- Department of Emergency Medicine, St. Johns Medical College, St. John's National Academy of Health Sciences, Bengaluru, Karnataka, India
| | - Amit Kumar Mandal
- Division of Molecular Medicine, Clinical Proteomics Unit, St. John's Research Institute, St. John's National Academy of Health Sciences, Bengaluru, Karnataka, India
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Effects of running on adiponectin, insulin and cytokines in cerebrospinal fluid in healthy young individuals. Sci Rep 2019; 9:1959. [PMID: 30760755 PMCID: PMC6374465 DOI: 10.1038/s41598-018-38201-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 12/19/2018] [Indexed: 12/17/2022] Open
Abstract
Exercise can prevent the sedentary lifestyle-related risk of metabolic and cognitive decline, but mechanisms and mediators of exercise effects on human brain are relatively unexplored. We measured acute exercise-induced changes in adiponectin, insulin and other bioactive molecules in cerebrospinal fluid (CSF) and serum from young lean individuals. Samples of serum and CSF were obtained before and 1-h after the 90-min run (75–80% HRmax; maximal heart rate), additional serum was taken at finish-line. Body composition, physical fitness, metabolic rate, cognitive functions, food preference, glucose, insulin and albumin were measured. The spectrum of 174 cytokines was assessed by protein arrays, adiponectin was also determined by ELISA and immunoblotting. CSF adiponectin decreased post-exercise by 21.3% (arrays) and 25.8% (ELISA) (p < 0.009). Immunoblotting revealed reduction in a low-molecular-weight-adiponectin (p < 0.005). CSF adiponectin positively correlated with CSF/serum albumin ratio (p < 0.022), an indicator of blood-brain-barrier permeability. CSF and serum adiponectin were positively associated with memory and running-induced changes in insulinemia and CSF insulin. Additionally, running modulated CSF levels of 16 other cytokines. Acute running reduced CSF adiponectin and modulated insulin and albumin in CSF and serum. Associations of adiponectin with memory and metabolism indicate the potential role of this bioactive molecule in mediating exercise-induced adaptive response in human brain.
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6
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Mathew B, Srinivasan K, Pradeep J, Thomas T, Mandal AK. Suicidal behaviour is associated with decreased esterified cholesterol in plasma and membrane fluidity of platelets. Asian J Psychiatr 2018; 32:105-109. [PMID: 29222984 DOI: 10.1016/j.ajp.2017.11.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 10/26/2017] [Accepted: 11/27/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Altered cholesterol levels in body fluids and brain tissues have been shown to be associated with suicidal behaviour, violence and aggression. But the biological underpinnings of this association in the pathophysiology of suicide are not clear. Cholesterol plays a crucial role in maintaining the cellular membrane fluidity and alterations in cellular membrane fluidity may impair serotonergic neurotransmission in the central nervous system. METHODS We measured plasma esterified cholesterol and platelet membrane fluidity using fluorescence anisotropy and estimated flow activation energy which is a measure of order of membrane lipid bilayer in patients with recent suicidal attempt and compared with age and gender matched controls. RESULTS The plasma esterified cholesterol, platelet membrane fluidity and flow activation energy was found to be significantly lower in patients with recent suicidal attempts compared to controls. CONCLUSION Altered levels of plasma esterified cholesterol which is in equilibrium with membrane cholesterol might have resulted in decreased membrane fluidity and an increase in the order of membrane lipid bilayer. This might impair the serotonergic neurotransmission, which has been implicated in the pathophysiology of suicide.
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Affiliation(s)
- Boby Mathew
- Clinical Proteomics Unit, Division of Molecular Medicine, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India
| | - Krishnamachari Srinivasan
- Department of Psychiatry, St. John's Medical College and Hospital, St. John's National Academy of Health Sciences, Bangalore, India
| | - Johnson Pradeep
- Department of Psychiatry, St. John's Medical College and Hospital, St. John's National Academy of Health Sciences, Bangalore, India
| | - Tinku Thomas
- Division of Epidemiology and Biostatistics, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India
| | - Amit Kumar Mandal
- Clinical Proteomics Unit, Division of Molecular Medicine, St. John's Research Institute, St. John's National Academy of Health Sciences, Bangalore, India.
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Bryleva EY, Keaton SA, Grit J, Madaj Z, Sauro-Nagendra A, Smart L, Halstead S, Achtyes E, Brundin L. The acute-phase mediator serum amyloid A is associated with symptoms of depression and fatigue. Acta Psychiatr Scand 2017; 135:409-418. [PMID: 28374419 DOI: 10.1111/acps.12730] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/01/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Establish whether inflammatory biomarkers-serum amyloid A (SAA), C-reactive protein (CRP), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α)-are related to key symptoms of depression, including anxiety and fatigue, in a cross-sectional, out-patient setting to identify biomarkers that reflect psychiatric symptomatology in a naturalistic, real-life population. METHODS We measured SAA, CRP, IL-6, and TNF-α in plasma samples from 89 adult psychiatric out-patients by multiplex, high-sensitivity electrochemiluminescent assays. Psychiatric symptoms were evaluated using the Hamilton Depression Rating Scale (HAMD-17), the Patient Health Questionnaire (PHQ-9), and the Center for Epidemiological Studies Depression Scale (CES-D). RESULTS Plasma SAA was most robustly associated with depressive symptoms across diagnostic boundaries in this cohort of out-patients. Elevated SAA was significantly associated with higher total scores on the HAMD-17 scale and correlated with multiple scale items that rated symptoms of fatigue and depressed mood, but not with anxiety-related items. CONCLUSIONS SAA might constitute a cross-diagnostic marker indicative of depressed mood and fatigue in a naturalistic patient setting. Because SAA activates Toll-like receptors 2 and 4, present on macrophages and glial cells, its association with depression severity could also implicate this inflammatory mediator in the pathogenesis of mood disorders.
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Affiliation(s)
- E Y Bryleva
- Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI, USA
| | - S A Keaton
- Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI, USA.,Division of Psychiatry and Behavioral Medicine, Michigan State University, Grand Rapids, MI, USA.,Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - J Grit
- Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI, USA
| | - Z Madaj
- Bioinformatics and Biostatistics Core, Van Andel Research Institute, Grand Rapids, MI, USA
| | - A Sauro-Nagendra
- Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI, USA
| | - L Smart
- Pine Rest Christian Mental Health Services, Grand Rapids, MI, USA
| | - S Halstead
- Pine Rest Christian Mental Health Services, Grand Rapids, MI, USA
| | - E Achtyes
- Division of Psychiatry and Behavioral Medicine, Michigan State University, Grand Rapids, MI, USA.,Pine Rest Christian Mental Health Services, Grand Rapids, MI, USA
| | - L Brundin
- Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI, USA.,Pine Rest Christian Mental Health Services, Grand Rapids, MI, USA
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8
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Soczynska JK, Kennedy SH, Alsuwaidan M, Mansur RB, Li M, McAndrews MP, Brietzke E, Woldeyohannes HO, Taylor VH, McIntyre RS. A pilot, open-label, 8-week study evaluating the efficacy, safety and tolerability of adjunctive minocycline for the treatment of bipolar I/II depression. Bipolar Disord 2017; 19:198-213. [PMID: 28599348 DOI: 10.1111/bdi.12496] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/04/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The objectives of the study were to determine if adjunctive minocycline mitigates depressive symptom severity and improves cognitive function in individuals with bipolar I/II disorder (BD). The study also aimed to determine if changes in depressive and/or cognitive symptoms over the course of treatment were associated with changes in circulating inflammatory cytokine levels. METHODS A total of 29 (intention-to-treat: n=27) adults meeting DSM-IV-TR criteria for a major depressive episode as part of bipolar I or II disorder (i.e. Hamilton Depression Rating Scale 17-item [HAMD-17] ≥20) were enrolled in an 8-week, open-label study with adjunctive minocycline (100 mg bid). The primary outcome measure was the Montgomery-Åsberg Depression Rating Scale (MADRS). The HAMD-17, Clinical Global Impression-Severity (CGI-S), cognitive test composite scores and plasma cytokines were secondary outcome measures. Plasma cytokines were measured with the 30 V-Plex Immunoassay from Meso Scale Discovery. RESULTS Adjunctive minocycline was associated with a reduction in depressive symptom severity from baseline to week 8 on the MADRS (P<.001, d=0.835), HAMD-17 (P<.001, d=0.949) and CGI-S (P<.001, d=1.09). Improvement in psychomotor speed, but not verbal memory or executive function, was observed only amongst individuals exhibiting a reduction in depression severity (P=.007, d=0.826). Levels of interleukin (IL)-12/23p40 (P=.002) were increased, while levels of IL-12p70 (P=.001) and C-C motif chemokine ligand 26 (CCL26) (P<.001) were reduced from baseline to week 8. A reduction in CCL26 levels was associated with a less favourable treatment response (P<.001). CONCLUSIONS Results from the pilot study suggest that adjunctive minocycline may exert antidepressant effects in individuals with bipolar depression, possibly by targeting inflammatory cytokines.
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Affiliation(s)
- Joanna K Soczynska
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada
| | - Sidney H Kennedy
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Mohammad Alsuwaidan
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Department of Psychiatry, Kuwait University, Kuwait City, Kuwait
| | - Rodrigo B Mansur
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada
| | - Madeline Li
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Psychosocial Oncology Clinic, University Health Network, Toronto, ON, Canada
| | - Mary Pat McAndrews
- Department of Psychology, University of Toronto, Toronto, ON, Canada.,Neuropsychology Clinic, University Health Network, Toronto, ON, Canada
| | - Elisa Brietzke
- Research Group in Molecular and Behavioral Neuroscience of Bipolar Disorder, Department of Psychiatry, Federal University of São Paulo, São Paulo, Brazil
| | - Hanna O Woldeyohannes
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada
| | - Valerie H Taylor
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Department of Psychiatry, Women's College Hospital, Toronto, ON, Canada
| | - Roger S McIntyre
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Department of Toxicology and Pharmacology, University of Toronto, Toronto, ON, Canada
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Fernström J, Westrin Å, Grudet C, Träskman-Bendz L, Brundin L, Lindqvist D. Six autoantibodies associated with autoimmune encephalitis are not detectable in the cerebrospinal fluid of suicide attempters. PLoS One 2017; 12:e0176358. [PMID: 28448609 PMCID: PMC5407829 DOI: 10.1371/journal.pone.0176358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 04/10/2017] [Indexed: 01/17/2023] Open
Abstract
Previous findings suggest a link between neuroinflammatory processes and suicidality. Despite several lines of evidence supporting this link, including increased pro-inflammatory markers in blood-, cerebrospinal fluid (CSF)- and in post-mortem brain samples from suicidal individuals, the underlying mechanisms remain poorly understood. In this pilot study, we explored the possibility that autoimmune encephalopathies might be found among suicide attempters. We analysed the presence of six different autoantibodies (N-methyl-D-aspartate receptor, the α-amino-3-hydroxy-5-methyl-4-isoxazol-propionic acid receptor, the γ-amino-butyric acid B-receptor, the leucine-rich, glioma-inactivated 1, the contactin-associated protein-like 2, and the dipeptidyl-peptidase-like protein-6), all previously associated with psychopathology, in CSF samples from 29 unmedicated suicide attempters. Five of these subjects had high CSF/serum albumin ratio, indicative of increased blood-brain-barrier permeability. We were not able to detect any of these autoantibodies in the CSF samples. These pilot data do not support a role for autoimmune encephalopathies in suicidal behaviour, although the presence of lower levels of these autoantibodies cannot be ruled out in these patients.
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Affiliation(s)
- Johan Fernström
- Department of Clinical Sciences Lund, Psychiatry, Lund University, Lund, Sweden.,Psychiatric Clinic, Lund, Division of Psychiatry, Lund, Sweden
| | - Åsa Westrin
- Department of Clinical Sciences Lund, Psychiatry, Lund University, Lund, Sweden.,Psychiatric Clinic, Lund, Division of Psychiatry, Lund, Sweden
| | - Cécile Grudet
- Department of Clinical Sciences Lund, Psychiatry, Lund University, Lund, Sweden
| | - Lil Träskman-Bendz
- Department of Clinical Sciences Lund, Psychiatry, Lund University, Lund, Sweden
| | - Lena Brundin
- Laboratory of Psychiatry and Behavioral Medicine, Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, Michigan, United States of America
| | - Daniel Lindqvist
- Department of Clinical Sciences Lund, Psychiatry, Lund University, Lund, Sweden.,Psychiatric Clinic, Lund, Division of Psychiatry, Lund, Sweden.,Department of Psychiatry, School of Medicine, University of California San Francisco, School of Medicine, San Francisco, California, United States of America
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10
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Brundin L, Bryleva EY, Thirtamara Rajamani K. Role of Inflammation in Suicide: From Mechanisms to Treatment. Neuropsychopharmacology 2017; 42:271-283. [PMID: 27377015 PMCID: PMC5143480 DOI: 10.1038/npp.2016.116] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 05/31/2016] [Accepted: 06/28/2016] [Indexed: 01/01/2023]
Abstract
Suicidal behavior is complex and manifests because of a confluence of diverse factors. One such factor involves dysregulation of the immune system, which has been linked to the pathophysiology of suicidal behavior. This review will provide a brief description of suicidality and discuss the contribution of upstream and downstream factors in the etiology of suicidal behavior, within the contextual framework of inflammation. The contribution of inflammatory conditions such as traumatic brain injury, autoimmune disorders, and infections to neuropsychiatric symptoms and suicidality is only beginning to be explored. We will summarize studies of inflammation in the etiology of suicide, and provide a neurobiological basis for different mechanisms by which inflammation might contribute to the pathophysiology. Finally, we will review treatments that affect upstream and downstream pathways related to inflammation in suicidality.
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Affiliation(s)
- Lena Brundin
- Laboratory of Behavioral Medicine, Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI, USA
| | - Elena Y Bryleva
- Laboratory of Behavioral Medicine, Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI, USA
| | - Keerthi Thirtamara Rajamani
- Laboratory of Behavioral Medicine, Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI, USA,Department of Behavioral Medicine, Laboratory of Behavioral Medicine, Center for Neurodegenerative Science, Van Andel Research Institute, Grand Rapids, MI 49503, USA, Tel:+1 616 234 5321, Fax: +1 616 234 5180, E-mail:
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11
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Courtet P, Giner L, Seneque M, Guillaume S, Olie E, Ducasse D. Neuroinflammation in suicide: Toward a comprehensive model. World J Biol Psychiatry 2016. [PMID: 26223957 DOI: 10.3109/15622975.2015.1054879] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVES Suicidal behaviour (SB) entered the DSM-5, underlying a specific biological vulnerability. Then, recent findings suggested a possible role of the immune system in SB pathogenesis. The objective of this review is to present these main immune factors involved in SB pathogenesis. METHODS We conducted a review using Preferred Reporting Items for Systematic reviews and Meta-Analysis criteria, and combined ("Inflammation") AND ("Suicidal ideation" OR "Suicidal attempt" OR "suicide"). RESULTS Post mortem studies demonstrated associations between suicide and inflammatory cytokines in the orbitofrontal cortex, a brain region involved in suicidal vulnerability. Also, microgliosis and monocyte-macrophage system activation may be a useful marker of suicide neurobiology. Kynurenine may influence inflammatory processes, and related molecular pathways may be involved in SB pathophysiology. Few recent studies associated inflammatory markers with suicidal vulnerability: serotonin dysfunction, impulsivity and childhood trauma. Interestingly, the perception of threat that leads suicidal individuals to contemplate suicide may activate biological stress responses, including inflammatory responses. CONCLUSIONS Translational projects would be crucial to identify a specific marker in SB disorders, to investigate its clinical correlations, and the interaction between inflammatory cytokines and monoamine systems in SB. These researches might lead to new biomarkers and novel directions for therapeutic strategies.
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Affiliation(s)
- Philippe Courtet
- a Department of Emergency Psychiatry , Hôpital Lapeyronie, CHU Montpellier and Post Acute Care , CHU Montpellier , France.,b Inserm, University of Montpellier , Montpellier , France.,c FondaMental Foundation , France
| | | | - Maude Seneque
- a Department of Emergency Psychiatry , Hôpital Lapeyronie, CHU Montpellier and Post Acute Care , CHU Montpellier , France.,b Inserm, University of Montpellier , Montpellier , France.,c FondaMental Foundation , France
| | - Sebastien Guillaume
- a Department of Emergency Psychiatry , Hôpital Lapeyronie, CHU Montpellier and Post Acute Care , CHU Montpellier , France.,b Inserm, University of Montpellier , Montpellier , France.,c FondaMental Foundation , France
| | - Emilie Olie
- a Department of Emergency Psychiatry , Hôpital Lapeyronie, CHU Montpellier and Post Acute Care , CHU Montpellier , France.,b Inserm, University of Montpellier , Montpellier , France.,c FondaMental Foundation , France
| | - Deborah Ducasse
- a Department of Emergency Psychiatry , Hôpital Lapeyronie, CHU Montpellier and Post Acute Care , CHU Montpellier , France.,b Inserm, University of Montpellier , Montpellier , France.,c FondaMental Foundation , France
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Ambrus L, Lindqvist D, Träskman-Bendz L, Westrin Å. Hypothalamic-pituitary-adrenal axis hyperactivity is associated with decreased brain-derived neurotrophic factor in female suicide attempters. Nord J Psychiatry 2016; 70:575-81. [PMID: 27216156 DOI: 10.1080/08039488.2016.1184310] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Both decreased levels of brain-derived neurotrophic factor (BDNF) and hypothalamic-pituitary-adrenal (HPA) axis dysregulation may be involved in the pathophysiology of suicidal behaviour, as well as cognitive symptoms of depression. Pre-clinical and clinical studies have shown interactions between HPA-axis activity and BDNF, but this has not been studied in a clinical cohort of suicidal subjects. The purpose of this study was, therefore, to investigate associations between HPA-axis activity and BDNF in suicide attempters. Furthermore, this study examined the relationship between the HPA-axis, BDNF, and cognitive symptoms in suicidal patients. Since previous data indicate gender-related differences in BDNF and the HPA axis, males and females were examined separately. METHOD Seventy-five recent suicide attempters (n = 41 females; n = 34 males) were enrolled in the study. The Dexamethasone Suppression Test (DST) was performed and BDNF in plasma were analysed. Patients were evaluated with the Comprehensive Psychopathological Rating Scale (CPRS) from which items 'Concentration difficulties' and 'Failing memory' were extracted. RESULTS Only among females, DST non-suppressors had significantly lower BDNF compared to DST suppressors (p = 0.022), and there was a significant correlation between post-DST serum cortisol at 8 a.m. and BDNF (rs = -0.437, p = 0.003). Concentration difficulties correlated significantly with post-DST cortisol in all patients (rs = 0.256, p = 0.035), in females (rs = 0.396, p = 0.015), and with BDNF in females (rs = -0.372, p = 0.020). CONCLUSION The findings suggest an inverse relationship between the HPA-axis and BDNF in female suicide attempters. Moreover, concentration difficulties may be associated with low BDNF and DST non-suppression in female suicide attempters.
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Affiliation(s)
- Livia Ambrus
- a Department of Clinical Sciences, Psychiatry , Lund University , Lund , Sweden
| | - Daniel Lindqvist
- a Department of Clinical Sciences, Psychiatry , Lund University , Lund , Sweden
| | - Lil Träskman-Bendz
- a Department of Clinical Sciences, Psychiatry , Lund University , Lund , Sweden
| | - Åsa Westrin
- a Department of Clinical Sciences, Psychiatry , Lund University , Lund , Sweden
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Evidence of cerebrospinal fluid abnormalities in patients with depressive syndromes. J Affect Disord 2016; 198:178-84. [PMID: 27017374 DOI: 10.1016/j.jad.2016.03.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 02/12/2016] [Accepted: 03/09/2016] [Indexed: 12/30/2022]
Abstract
BACKGROUND Depression is the most prevalent psychiatric disease. In addition to primary, idiopathic depression, there are multiple secondary organic forms. However, distinguishing the two can be difficult, information about cerebrospinal fluid (CSF) basic findings in patients with depressive syndromes is sparse. Therefore, we investigated CSF alterations in so far the largest sample of patients with depressive syndromes. We hypothesized that increased prevalence of CSF pleocytosis, blood-brain-barrier (BBB) dysfunction, and oligoclonal bands (OCBs) would be observed as possible markers of underlying immunological processes. METHODS From January 2006 until October 2013, we performed CSF basic diagnostics in 125 patients with depressive syndromes. We also performed serum and CSF autoantibody measurements, cerebral magnetic resonance imaging (cMRI) and electroencephalography (EEG). RESULTS Four % of the patients displayed increased CSF white blood cell counts (WBC), 46.4% had increased protein concentrations, and 19.4% had pathological albumin quotients. OCBs in the CSF were detected in 6.5%. Overall, CSF basic diagnostics were abnormal in 56%. Including instrument-based diagnostics, we found alterations in 80.8% of patients. Suicidal tendencies correlated with an increased WBC count (r=0.276, p=0.002). LIMITATIONS In this open, uncontrolled study, we investigated mainly CSF samples of depressive patients with signs of organic features. Therefore, the study cohort is not representative of idiopathic depression. CONCLUSIONS The main findings of this study are the high rates of pathological (although mainly unspecific) CSF findings. We discuss the findings regarding possible immunological mechanisms and the vascular depression hypothesis. If these findings are associated with low-level inflammation of the central nervous system, new treatment alternatives could be considered. More and better controlled research is necessary.
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Dogan KH, Unaldi M, Demirci S. Evaluation of Postmortem Cerebrospinal Fluid S100B Protein and Serotonin Levels: Comparison of Suicidal Versus Nonsuicidal Deaths in Konya, Turkey. J Forensic Sci 2016; 61:1285-91. [DOI: 10.1111/1556-4029.13124] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 11/16/2015] [Accepted: 11/27/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Kamil Hakan Dogan
- Department of Forensic Medicine; Faculty of Medicine; Selcuk University; 42075 Konya Turkey
| | - Mustafa Unaldi
- Department of Biochemistry; Private Ticaret Borsasi Hospital; Sukran Mh. Taskapu Medrese Sk. 42040 Konya Turkey
| | - Serafettin Demirci
- Department of Forensic Medicine; Meram Medical School; Necmettin Erbakan University; Akyokus 42080 Konya Turkey
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Ventorp F, Barzilay R, Erhardt S, Samuelsson M, Träskman-Bendz L, Janelidze S, Weizman A, Offen D, Brundin L. The CD44 ligand hyaluronic acid is elevated in the cerebrospinal fluid of suicide attempters and is associated with increased blood-brain barrier permeability. J Affect Disord 2016; 193:349-54. [PMID: 26796235 DOI: 10.1016/j.jad.2015.12.069] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 12/07/2015] [Accepted: 12/26/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND The glycosaminoglycan hyaluronic acid (HA) is an important component of the extracellular matrix (ECM) in the brain. CD44 is a cell adhesion molecule that binds to HA in the ECM and is present on astrocytes, microglia and certain neurons. Cell adhesion molecules have been reported to be involved in anxiety and mood disorders. CD44 levels are decreased in the cerebrospinal fluid (CSF) of depressed individuals, and the CD44 gene has been identified in brain GWAS studies as a possible risk gene for suicidal behavior. METHOD We measured the CSF levels of HA and the soluble CD44 (sCD44) in suicide attempters (n=94) and in healthy controls (n=45) using ELISA and electrochemiluminescence assays. We also investigated other proteins known to interact with CD44, such as osteopontin and the matrix metalloproteinases MMP1, MMP3 and MMP9. RESULTS The suicide attempters had higher CSF levels of HA (p=.003) and MMP9 (p=.004). The CSF levels of HA correlated with BBB-permeability (rho=0.410, p<.001) and MMP9 correlated with sCD44 levels (rho=0.260, p=.005). LIMITATIONS Other relevant biological contributors to suicidal behavior is not addressed in parallel to the specific role of CD44-HA signaling. The gender distribution of the patients from whom CSF was analyzed was uneven. CONCLUSIONS Increased BBB-permeability and HA levels might be a results of increased neuroinflammation and can play a role in the pathobiology of suicidal behavior. The CD44 signaling pathway might be considered a novel target for intervention in mood disorders.
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Affiliation(s)
- F Ventorp
- Psychoimmunology Unit, Division of Psychiatry, Department of Clinical Sciences, Lund University, Lund, Sweden; Department of Psychiatry and Behavioral Medicine, Michigan State University, Grand Rapids, Michigan, United States.
| | - R Barzilay
- Laboratory of Neuroscience, Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University, Petach-Tikva, Israel; Research Unit at Geha Mental Health Center, Petach-Tikva, Israel
| | - S Erhardt
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - M Samuelsson
- Psychiatry Section, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
| | - L Träskman-Bendz
- Psychoimmunology Unit, Division of Psychiatry, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - S Janelidze
- Psychoimmunology Unit, Division of Psychiatry, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - A Weizman
- Research Unit at Geha Mental Health Center, Petach-Tikva, Israel; Laboratory of Biological Psychiatry, Felsenstein Medical Research Center, Rabin Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Israel
| | - D Offen
- Laboratory of Neuroscience, Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University, Petach-Tikva, Israel
| | - L Brundin
- Psychoimmunology Unit, Division of Psychiatry, Department of Clinical Sciences, Lund University, Lund, Sweden; Department of Psychiatry and Behavioral Medicine, Michigan State University, Grand Rapids, Michigan, United States; Laboratory of Behavioral Medicine, Van Andel Research Institute, Grand Rapids, Michigan, United States
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Early Loss of Blood-Brain Barrier Integrity Precedes NOX2 Elevation in the Prefrontal Cortex of an Animal Model of Psychosis. Mol Neurobiol 2016; 54:2031-2044. [PMID: 26910819 PMCID: PMC5355521 DOI: 10.1007/s12035-016-9791-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 02/11/2016] [Indexed: 12/29/2022]
Abstract
The social isolation rearing of young adult rats is a model of psychosocial stress and provides a nonpharmacological tool to study alterations reminiscent of symptoms seen in psychosis. We have previously demonstrated that social isolation in rats leads to increased oxidative stress and to cerebral NOX2 elevations. Here, we investigated early alterations in mRNA expression leading to increased NOX2 in the brain. Rats were exposed to a short period of social isolation (1 week) and real-time polymerase chain reaction (PCR) for mRNA expression of genes involved in blood-brain barrier (BBB) formation and integrity (ORLs, Vof 21 and Vof 16, Leng8, Vnr1, and Trank 1 genes) was performed. Real-time PCR experiments, immunohistochemistry, and Western blotting analysis showed an increased expression of these genes and related proteins in isolated rats with respect to control animals. The expression of specific markers of BBB integrity, such as matrix metalloproteinase 2 (MMP2), matrix metalloproteinase 9 (MMP9), occludin 1, and plasmalemmal vesicle associated protein-1 (PV-1), was also significantly altered after 1 week of social isolation. BBB permeability, evaluated by quantification of Evans blue dye extravasation, as well as interstitial fluid, was significantly increased in rats isolated for 1 week with respect to controls. Isolation-induced BBB disruption was also accompanied by a significant increase of Interleukin 6 (IL-6) expression. Conversely, no differences in NOX2 levels were detected at this time point. Our study demonstrates that BBB disruption precedes NOX2 elevations in the brain. These results provide new insights in the interplay of mechanisms linking psychosocial stress to early oxidative stress in the brain, disruption of the BBB, and the development of mental disorders.
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Immune System Related Markers: Changes in childhood Neuropsychiatry Disorders Cause and Consequence. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/978-3-319-13602-8_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Abstract
Immune functions in the brain are associated with psychiatric illness and temporary alteration of mental state. Microglia, the principal brain immunologic cells, respond to changes in the internal brain milieu through a sequence of activated states, each with characteristic function and morphology. To assess a possible association of frontal white matter pathology with suicide, we stained autopsy brain tissue samples from 11 suicide and 25 nonsuicide subjects for ionized calcium-binding adapter molecule 1, cluster of differentiation 68, and myelin. Groups were matched by age, sex, and psychiatric diagnosis. We classified ionized calcium-binding adapter molecule 1-immunoreactive cells based on shape, immunoreactivity to cluster of differentiation 68, and association with blood vessels to obtain stereologic estimates of densities of resting microglia, activated phagocytes, and perivascular cells. We found no effect of psychiatric diagnosis but 2 statistically significant effects of suicide: 1) The dorsal-ventral difference in activated microglial density was reversed such that, with suicide, the density was greater in ventral prefrontal white matter than in dorsal prefrontal white matter, whereas in the absence of suicide, the opposite was true; and 2) with suicide, there was a greater density of ionized calcium-binding adapter molecule 1-immunoreactive cells within or in contact with blood vessel walls in dorsal prefrontal white matter. These observations could reflect a mechanism for the stress/diathesis (state/trait) model of suicide, whereby an acute stress activates a reactive process in the brain, either directly or by compromising the blood-brain barrier, and creates a suicidal state in an individual at risk. They also indicate the theoretical potential of imaging studies in living vulnerable individuals for the assessment of suicide risk. Further studies are needed to investigate specific phenotypes of perivascular cells and blood-brain barrier changes associated with suicide.
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Abstract
Glia are starting to be accepted as the equal of neurons. Their impact on intelligence, environmental enrichment, and cerebral dominance forms the basis for understanding the role of glia in stress. Along with neurons, astrocytes, microglia, NG2 cells, and oligodendrocytes all contribute. Glia can even be protective against drug abuse. Glial effects on depression, mood disorders and schizophrenia are reviewed.
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Zetterberg H, Jakobsson J, Redsäter M, Andreasson U, Pålsson E, Ekman CJ, Sellgren C, Johansson AG, Blennow K, Landén M. Blood-cerebrospinal fluid barrier dysfunction in patients with bipolar disorder in relation to antipsychotic treatment. Psychiatry Res 2014; 217:143-6. [PMID: 24745469 DOI: 10.1016/j.psychres.2014.03.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 01/20/2014] [Accepted: 03/28/2014] [Indexed: 12/27/2022]
Abstract
Blood-cerebrospinal barrier (BCB) dysfunction has previously been shown in subjects with schizophrenia and depressed patients with attempted suicide. Bipolar disorder (BPD) shares clinical features with both these disorders, but it is unknown if the integrity of the BCB is altered also in BPD. To assess if BCB function in BPD we surveyed 134 mood-stabilized BPD patients and 86 healthy controls. Serum and cerebrospinal fluid (CSF) samples were collected and analyzed for albumin concentration by immunonephelometry. CSF/serum albumin ratio, an established measure of BCB function, was significantly elevated in BPD patients as compared to controls. After stratifying patients according to diagnostic subtype, BPD I patients had the highest CSF/serum albumin ratios. Moreover, BPD patients on antipsychotic treatment had higher CSF/serum albumin ratio than BPD patients on other treatments. When excluding BPD patients on antipsychotic treatment the difference in CSF/serum albumin ratio between the BPD and control groups disappeared. In conclusion, antipsychotic treatment in BPD is associated with elevated CSF/serum albumin ratio, tentatively as a sign of impaired BCB function. Whether this elevation is caused by antipsychotic treatment or is associated with a certain subtype of BPD, requiring antipsychotic treatment, remains to be determined.
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Affiliation(s)
- Henrik Zetterberg
- Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden; UCL Institute of Neurology, Queen Square, London WC1N 3BG, United Kingdom
| | - Joel Jakobsson
- Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
| | - Mikael Redsäter
- Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
| | - Ulf Andreasson
- Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
| | - Erik Pålsson
- Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
| | - Carl Johan Ekman
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Carl Sellgren
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Anette Gm Johansson
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Kaj Blennow
- Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
| | - Mikael Landén
- Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden; Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
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Nilsson T, Bromander S, Anckarsäter R, Kristiansson M, Forsman A, Blennow K, Zetterberg H, Anckarsäter H, Wass C. Neurochemical measures co-vary with personality traits: forensic psychiatric findings replicated in a general population sample. Psychiatry Res 2010; 178:525-30. [PMID: 20619466 DOI: 10.1016/j.psychres.2010.05.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Revised: 05/18/2010] [Accepted: 05/21/2010] [Indexed: 10/19/2022]
Abstract
Neurobiological markers in cerebrospinal fluid (CSF) and in serum, previously found to co-vary with destructive personality traits in violent offenders, were explored in a general population sample of 21 patients undergoing knee surgery. Results on the Karolinska Scales of Personality (KSP) and the Temperament and Character Inventory (TCI) were compared with CSF/serum albumin ratios and serum concentrations of beta-trace protein (betaTP) (as markers for blood-brain barrier (BBB) permeability), to CSF/serum albumin ratios between the dopamine and serotonin metabolites homovanillic acid (HVA)/5-hydroxyindoleacetic acid (HIAA) and to CSF and serum ratios between activated thyroid hormone (T3) and its precursor T4. Serum betaTP concentrations correlated with CSF/serum albumin ratios (P=0.018), but not with preoperative serum creatinine concentrations. Serum betaTP correlated significantly with Monotony Avoidance and Impulsiveness; CSF HVA/5-HIAA ratios with Irritability and low Cooperativeness. The betaTP is a potential serum marker for the integrity of the BBB that does not necessitate lumbar puncture. Thyroid hormones did not correlate with personality traits. As reported in forensic psychiatric patients, aggressive, unempathic personality traits were thus associated with increased dopaminergic activity in relation to the serotonergic activity and impulsivity to increased BBB permeability also in a general population group.
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Affiliation(s)
- Thomas Nilsson
- Institute of Neuroscience and Physiology, University of Gothenburg, Sweden
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Falcone T, Fazio V, Lee C, Simon B, Franco K, Marchi N, Janigro D. Serum S100B: a potential biomarker for suicidality in adolescents? PLoS One 2010; 5:e11089. [PMID: 20559426 PMCID: PMC2885416 DOI: 10.1371/journal.pone.0011089] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Accepted: 05/19/2010] [Indexed: 11/21/2022] Open
Abstract
Background Studies have shown that patients suffering from depression or schizophrenia often have immunological alterations that can be detected in the blood. Others reported a possible link between inflammation, a microgliosis and the blood-brain barrier (BBB) in suicidal patients. Serum S100B is a marker of BBB function commonly used to study cerebrovascular wall function. Methods We measured levels of S100B in serum of 40 adolescents with acute psychosis, 24 adolescents with mood disorders and 20 healthy controls. Patients were diagnosed according to DSM-IV TR criteria. We evaluated suicidal ideation using the suicidality subscale of the Brief Psychiatric Rating Scale for Children (BPRS-C). Results Serum S100B levels were significantly higher (p<0.05) and correlated to severity of suicidal ideation in patients with psychosis or mood disorders, independent of psychiatric diagnosis. Patients with a BPRS-C suicidality subscores of 1–4 (low suicidality) had mean serum S100B values +/− SEM of 0.152+/−0.020 ng/mL (n = 34) compared to those with BPRS-C suicidality subscores of 5–7 (high suicidality) with a mean of 0.354+/−0.044 ng/mL (n = 30). This difference was statistically significant (p<0.05). Conclusion Our data support the use of S100B as an adjunctive biomarker to assess suicidal risk in patients with mood disorders or schizophrenia.
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Affiliation(s)
- Tatiana Falcone
- Cleveland Clinic-Lerner College of Medicine, Cleveland, Ohio, United States of America
| | - Vincent Fazio
- Cleveland Clinic-Lerner College of Medicine, Cleveland, Ohio, United States of America
| | - Catherine Lee
- Cleveland Clinic-Lerner College of Medicine, Cleveland, Ohio, United States of America
| | - Barry Simon
- Cleveland Clinic-Lerner College of Medicine, Cleveland, Ohio, United States of America
| | - Kathleen Franco
- Cleveland Clinic-Lerner College of Medicine, Cleveland, Ohio, United States of America
| | - Nicola Marchi
- Cleveland Clinic-Lerner College of Medicine, Cleveland, Ohio, United States of America
| | - Damir Janigro
- Cleveland Clinic-Lerner College of Medicine, Cleveland, Ohio, United States of America
- * E-mail:
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Gudmundsson P, Skoog I, Waern M, Blennow K, Zetterberg H, Rosengren L, Gustafson D. Is there a CSF biomarker profile related to depression in elderly women? Psychiatry Res 2010; 176:174-8. [PMID: 20132991 DOI: 10.1016/j.psychres.2008.11.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2007] [Revised: 04/18/2008] [Accepted: 11/11/2008] [Indexed: 11/17/2022]
Abstract
In light of our previous observation of higher levels of cerebrospinal fluid (CSF) amyloid beta-42 (Abeta42) and CSF/serum albumin ratio in major depressive disorder (MDD), we analyzed two additional CSF biomarkers reflecting neurodegeneration-neurofilament protein light (NFL) and glial fibrillary acidic protein (GFAp)-in relationship to prevalent geriatric depression. Neuropsychiatric, physical, and lumbar puncture examinations, with DSM-III-R-based depression diagnoses and measurement of CSF levels of NFL and GFAp, were evaluated among a population-based sample of 78 elderly women (mean age, 73.9+/-3.2 years) without dementia for at least 10 years after CSF collection. Eleven (13.1%) women had MDD, and higher levels of NFL compared with women without depression. A multivariate model including age, NFL, Abeta42 and the CSF/serum albumin ratio showed that each biomarker was independently and positively associated with MDD, and that this biomarker profile explained more variation in the model compared with single or combined biomarkers. A CSF profile with higher levels of NFL, Abeta42, and CSF/serum albumin ratio may indicate neuropathological and vascular events in depression etiology. This contrasts with the well-characterized pattern of low Abeta42, higher CSF/serum albumin ratio, and higher NFL in Alzheimer's disease.
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Affiliation(s)
- Pia Gudmundsson
- Institute of Neuroscience and Physiology, Section for Psychiatry and Neurochemistry, Sahlgrenska Academy at University of Gothenburg, Sweden.
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Lindqvist D, Janelidze S, Hagell P, Erhardt S, Samuelsson M, Minthon L, Hansson O, Björkqvist M, Träskman-Bendz L, Brundin L. Interleukin-6 is elevated in the cerebrospinal fluid of suicide attempters and related to symptom severity. Biol Psychiatry 2009; 66:287-92. [PMID: 19268915 DOI: 10.1016/j.biopsych.2009.01.030] [Citation(s) in RCA: 375] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2008] [Revised: 01/11/2009] [Accepted: 01/28/2009] [Indexed: 10/21/2022]
Abstract
BACKGROUND Depressive disorders are associated with immune system alterations that can be detected in the blood. Cytokine concentrations in cerebrospinal fluid (CSF) and their relationship to aspects of suicidality have previously not been investigated. METHODS We measured interleukin-1beta, interleukin-6 (IL-6), interleukin-8, and tumor necrosis factor-alpha (TNF-alpha) in CSF and plasma of suicide attempters (n = 63) and healthy control subjects (n = 47). Patients were classified according to diagnosis and violent or nonviolent suicide attempt. We evaluated suicidal ideation and depressive symptoms using the Suicide Assessment Scale and the Montgomery-Asberg Depression Rating Scale (MADRS). We also analyzed the relation between cytokines and monoamine metabolites 5-hydroxyindoleacetic acid (5-HIAA), homovanillic acid (HVA), and 3-methoxy-4-hydroxyphenylglycol (MHPG) in CSF, as well as the integrity of the blood-brain barrier as reflected by the CSF:serum albumin ratio. RESULTS IL-6 in CSF was significantly higher in suicide attempters than in healthy control subjects. Patients who performed violent suicide attempts displayed the highest IL-6. Furthermore, there was a significant positive correlation between MADRS scores and CSF IL-6 levels in all patients. IL-6 and TNF-alpha correlated significantly with 5-HIAA and HVA in CSF, but not with MHPG. Cytokine levels in plasma and CSF were not associated, and patients with increased blood-brain barrier permeability did not exhibit elevated cytokine levels. CONCLUSIONS We propose a role for CSF IL-6 in the symptomatology of suicidal behavior, possibly through mechanisms involving alterations of dopamine and serotonin metabolism.
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Affiliation(s)
- Daniel Lindqvist
- Department of Clinical Sciences, Section of Psychiatry, Lund University Hospital, Lund SE-221 85, Sweden
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Gudmundsson P, Skoog I, Waern M, Blennow K, Pálsson S, Rosengren L, Gustafson D. The relationship between cerebrospinal fluid biomarkers and depression in elderly women. Am J Geriatr Psychiatry 2007; 15:832-8. [PMID: 17911361 DOI: 10.1097/jgp.0b013e3180547091] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Cerebrospinal fluid (CSF) biomarkers including the 42 amino-acid form of beta-amyloid (Abeta42), total tau protein (T-tau), and the CSF/serum albumin ratio are markers of brain pathology and metabolism. Abeta42 and T-tau are sometimes used to discriminate geriatric depression from mild forms of Alzheimer disease (AD) in clinical studies. However, studies focusing on the relationship between these CSF biomarkers and geriatric depression are lacking. METHODS This was a cross-sectional study with a population-based sample of 84 nondemented elderly women in Sweden. Measurements included neuropsychiatric, physical, and lumbar puncture examinations, with Diagnostic and Statistical Manual of Mental Disorders, Third Revision-based depression diagnoses and measurement of CSF levels of Abeta42, T-tau, albumin, and serum albumin. RESULTS Fourteen women (mean age: 72.6 years) had any depression (11 with major depressive disorder [MDD]). Compared to women without depression, women with MDD had higher levels of Abeta42 and the CSF/serum albumin ratio. The CSF/serum albumin ratio was also higher in women with any depression. No differences in T-tau were observed; however, T-tau increased with age. CONCLUSION Higher levels of CSF Abeta42 were observed among elderly depressed women, in contrast to lower levels usually observed in AD, indicating potential neuropathological differences between the two disorders. Higher CSF/serum albumin ratios observed in depressed women point to potential vascular processes.
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Affiliation(s)
- Pia Gudmundsson
- Institute of Neuroscience and Physiology, Section for Psychiatry and Neurochemistry, Sahlgrenska Academy at Göteborg University, Göteborg, Sweden
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Anckarsäter R, Vasic N, Jidéus L, Kristiansson M, Zetterberg H, Blennow K, Anckarsäter H. Cerebrospinal fluid protein reactions during non-neurological surgery. Acta Neurol Scand 2007; 115:254-9. [PMID: 17376123 DOI: 10.1111/j.1600-0404.2006.00741.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To study changes in cerebrospinal fluid (CSF) protein markers of blood-CSF barrier integrity and immunological reactions during surgical stress. SUBJECTS AND METHODS Thirty-five patients without neurological or psychiatric disorders undergoing knee replacements had CSF and serum samples drawn from spinal and arterial catheters before, 3 h after and the morning after surgery. RESULTS Serum albumin decreased during surgery and CSF albumin decreased during and after surgery, and, as a consequence, the CSF/serum albumin ratio decreased significantly during the study period, especially after the intervention. In contrast, CSF concentrations of beta-2-microglobuline (beta2M) increased significantly during surgery and remained high. The CSF general marker beta-trace protein (betaTP) remained unchanged. CONCLUSIONS Central nervous system protein reactions to a non-neurological surgical intervention include sharply decreased permeability of albumin into the CSF and signs of intrathecal inflammatory activity.
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Affiliation(s)
- R Anckarsäter
- Department of Anaesthesiology and Intensive Care, Kungälv Hospital, Kungälv, Sweden
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Anckarsäter H, Forsman A, Blennow K. Increased CSF/serum albumin ratio: a recurrent finding in violent offenders. Acta Neurol Scand 2005; 112:48-50. [PMID: 15932356 DOI: 10.1111/j.1600-0404.2005.00433.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To test the hypothesis that cerebrospinal fluid (CSF)/ serum albumin ratios are increased in violent offenders. SUBJECTS AND METHODS In a previous study of violent offenders, we found significantly higher CSF/serum album ratios (as a sign of increased blood-brain barrier permeability) in violent offenders than in healthy controls. For the present replication study, we recruited a new group of 28 violent offenders, aged 45 years or younger, and 20 new control subjects. RESULTS The albumin ratio was again significantly higher in the offender group (mean 6.2) than in the control group (mean 4.6) (P = 0.012). Substance abuse or current medication did not appear to explain this finding. CONCLUSION Increased CSF/serum albumin ratios are an unspecific sign of neurological dysfunction in subgroups of violent offenders.
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Affiliation(s)
- H Anckarsäter
- Longitudinal Clinical Psychiatry, Institute of Clinical Sciences, Malmö, Sweden.
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