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Ikenouchi A, Okamoto N, Hamada S, Chibaatar E, Fujii R, Konishi Y, Igata R, Tesen H, Yoshimura R. Association between salivary mature brain-derived neurotrophic factor and psychological distress in healthcare workers. Brain Behav 2023; 13:e3278. [PMID: 37822121 PMCID: PMC10726813 DOI: 10.1002/brb3.3278] [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: 04/07/2023] [Revised: 08/28/2023] [Accepted: 09/28/2023] [Indexed: 10/13/2023] Open
Abstract
INTRODUCTION Previous studies have suggested association between brain-derived neurotrophic factor (BDNF) and the stress level of workers. However, no studies have investigated the potential of salivary mature BDNF (mBDNF) level as a noninvasive biomarker for psychological distress. This study aimed to explore the reliability of salivary mBDNF as a biomarker for psychological distress in healthcare workers. Furthermore, we examined the relationship between salivary and plasma mBDNF levels and their correlation with age, sex, body mass index (BMI), and exercise habits. METHODS Fifty-one healthy healthcare workers (26 men) from the University of Occupational and Environmental Health, Japan, participated in this study. In this cross-sectional study, participants provided demographic information. Psychological distress was assessed using the Kessler 6 (K6). Saliva and blood samples were collected, and mBDNF was measured by ELISA. Spearman's rank correlation coefficient was performed to analyze the relationship between mBDNF (saliva and plasma) and K6. Statistical analyses were conducted using Stata 17.0, and a significance level of p < .05 was applied. RESULTS The median K6 score was 1 (interquartile range [IQR]: 0-3). The median (IQR) salivary mBDNF was 1.36 (1.12-1.96) pg/mL, whereas the mean (standard deviation) plasma mBDNF was 1261.11 (242.98) pg/mL. No correlation was observed between salivary and plasma mBDNF concentrations or with the K6 score. Additionally, there were no associations between salivary or plasma mBDNF concentrations and age, sex, or exercise habits. Finally, an association between plasma mBDNF concentration and BMI was found only in univariate analysis. CONCLUSION Our findings indicate that salivary mBDNF can be accurately measured noninvasively in healthcare workers. Within our study sample, salivary mBDNF did not demonstrate any correlation with K6 and plasma mBDNF. Future studies with a larger study sample and a diverse study population consisting of healthy participants and patients with psychiatric disorders are warranted.
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Affiliation(s)
- Atsuko Ikenouchi
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
- Medical Center for DementiaHospital of University of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Naomichi Okamoto
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Shinsuke Hamada
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
- Medical Center for DementiaHospital of University of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Enkhmurun Chibaatar
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Rintaro Fujii
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Yuki Konishi
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Ryohei Igata
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Hirofumi Tesen
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Reiji Yoshimura
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
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Soloey-Nilsen H, Nygaard-Odeh K, Kristiansen MG, Brekke OL, Mollnes TE, Reitan SK, Oiesvold T. Association between brain-derived neurotropic factor (BDNF), high-sensitivity C-reactive protein (hs-CRP) and psychiatric symptoms in medicated and unmedicated patients. BMC Psychiatry 2022; 22:84. [PMID: 35114967 PMCID: PMC8815216 DOI: 10.1186/s12888-022-03744-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 01/28/2022] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND There is evidence that brain-derived neurotropic factor (BDNF) plays a protective role in the brain. Peripheral levels of BDNF correlate with its concentration in the brain. Previous studies have revealed lower serum BDNF levels in patients with mental illnesses. In most studies serum BDNF correlates negatively with psychiatric disorders and disease severity. Most studies in this field are on psychiatric diagnosis and personality traits. The aim of our study is to explore associations between general psychiatric symptoms, independent of diagnostic groups, and serum BDNF as well as the inflammatory biomarker high-sensitive CRP (hs-CRP). Comparison between the group regularly using psychotropic medication and those not using psychotropic medication is conducted. METHODS The study is a cross sectional study with 132 participants from a general open inpatient psychiatric ward at the Nordland Hospital Trust, Bodoe, Norway. Participants were assessed on serum levels of BDNF and hs-CRP. Psychiatric symptoms were assessed by a self-rating scale (Symptom check list, SCL-90- R). Multiple linear regression model was used for statistical analyses of associations between levels of BDNF, hs-CRP and symptoms. RESULTS We found a positive association (p < 0.05), for most SCL-90 symptom clusters with BDNF in the psychotropic medication-free group. No associations were found in the group of patients using psychotropic medication, except one, the paranoid ideation cluster (p 0.022). No associations were found between hs-CRP and symptom clusters. CONCLUSION We found no relation between symptom clusters and the inflammatory biomarker hs-CRP. Serum BDNF levels were positively associated with intensity of psychiatric symptoms in the group of patients not using psychotropic medication. Our findings are in conflict with several previous studies reporting increased hs-CRP as well as decreased rather than increased BDNF in mental suffering. Patients on psychotropic medication may not require the same upregulation because the medication is modulating the underlying biological pathology.
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Affiliation(s)
- Hedda Soloey-Nilsen
- Nordland Hospital Trust, N-8092, Bodø, Norway. .,Institute of Clinical Medicine, UIT The Arctic University of Norway, Tromsø, Norway.
| | - Kristin Nygaard-Odeh
- grid.420099.6Nordland Hospital Trust, N-8092 Bodø, Norway ,grid.10919.300000000122595234Institute of Clinical Medicine, UIT The Arctic University of Norway, Tromsø, Norway
| | - Magnhild Gangsoey Kristiansen
- grid.420099.6Nordland Hospital Trust, N-8092 Bodø, Norway ,grid.10919.300000000122595234Institute of Clinical Medicine, UIT The Arctic University of Norway, Tromsø, Norway
| | - Ole Lars Brekke
- grid.420099.6Nordland Hospital Trust, N-8092 Bodø, Norway ,grid.10919.300000000122595234Institute of Clinical Medicine, UIT The Arctic University of Norway, Tromsø, Norway
| | - Tom Eirik Mollnes
- grid.420099.6Nordland Hospital Trust, N-8092 Bodø, Norway ,grid.10919.300000000122595234Research Laboratory, Nordland Hospital Trust, and, Faculty of Health Sciences, K.G. Jebsen TREC, University of Tromsø, Tromsø, Norway ,grid.55325.340000 0004 0389 8485Department of Immunology, Oslo University Hospital and University of Oslo, Oslo, Norway ,grid.5947.f0000 0001 1516 2393Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - Solveig Klaebo Reitan
- grid.5947.f0000 0001 1516 2393Department of Mental Health IPH, Faculty of Medicine and Health sciences, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Terje Oiesvold
- grid.420099.6Nordland Hospital Trust, N-8092 Bodø, Norway
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Orosz A, Federspiel A, Eckert A, Seeher C, Dierks T, Tschitsaz A, Cattapan K. Exploring the effectiveness of a specialized therapy programme for burnout using subjective report and biomarkers of stress. Clin Psychol Psychother 2020; 28:852-861. [PMID: 33283948 DOI: 10.1002/cpp.2539] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 11/07/2022]
Abstract
The increasing prevalence of stress-related disorders such as burnout urges the need for specialized treatment approaches. Programmes combining psychotherapy and regenerative interventions emerge to be the most successful. However, evaluated therapy programmes are scarce and usually involve subjective symptom quantification without consideration of physiologic parameters. The aim of the present exploratory, single-group study was the multimodal investigation of the effectiveness of a specialized holistic therapy programme by assessing symptoms and biological markers of chronic stress. Seventy-one in-patients (39 men/32 women; age 46.8 ± 9.9 years) of a specialized burnout ward with the additional diagnosis of burnout (Z73.0) in conjunction with a main diagnosis of depressive disorder (F32 or F33) according to the International Classification of Diseases (ICD)-10 were included in the study. In addition to symptomatology, the stress-responsive biomarkers heart rate variability (HRV) and serum brain-derived neurotrophic factor (BDNF) were measured in patients at admittance to and discharge from the burnout ward applying a 6-week specialized treatment programme. At discharge, patients showed a significant reduction of symptom burden and a significant increase in serum BDNF, while HRV remained unchanged. The findings implicate that the therapy programme may have beneficial effects on symptomatology and neuroplasticity of patients with burnout. As therapy was often supplemented by psychopharmacological treatment, a relevant influence of antidepressant medication especially on BDNF has to be considered.
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Affiliation(s)
- Ariane Orosz
- Centre for Stress-Related Illnesses, Sanatorium Kilchberg, Private Clinic for Psychiatry and Psychotherapy, Kilchberg, Switzerland.,University Hospital of Psychiatry and Psychotherapy, Division of Systems Neuroscience of Psychopathology, Translational Research Center, University Bern Psychiatric Services (UPD), Bern, Switzerland
| | - Andrea Federspiel
- University Hospital of Psychiatry and Psychotherapy, Division of Systems Neuroscience of Psychopathology, Translational Research Center, University Bern Psychiatric Services (UPD), Bern, Switzerland
| | - Anne Eckert
- Neurobiology Laboratory for Brain Aging and Mental Health, Transfaculty Research Platform Molecular and Cognitive Neuroscience (MCN), University of Basel, Psychiatric University Clinics Basel, Basel, Switzerland
| | - Christian Seeher
- Centre for Stress-Related Illnesses, Sanatorium Kilchberg, Private Clinic for Psychiatry and Psychotherapy, Kilchberg, Switzerland
| | - Thomas Dierks
- University Hospital of Psychiatry and Psychotherapy, Division of Systems Neuroscience of Psychopathology, Translational Research Center, University Bern Psychiatric Services (UPD), Bern, Switzerland
| | - Armita Tschitsaz
- University Hospital for Child and Adolescent Psychiatry and Psychotherapy Bern, Moosseedorf, Switzerland
| | - Katja Cattapan
- Centre for Stress-Related Illnesses, Sanatorium Kilchberg, Private Clinic for Psychiatry and Psychotherapy, Kilchberg, Switzerland.,University Hospital of Psychiatry and Psychotherapy, Division of Systems Neuroscience of Psychopathology, Translational Research Center, University Bern Psychiatric Services (UPD), Bern, Switzerland
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Buselli R, Veltri A, Baldanzi S, Marino R, Bonotti A, Chiumiento M, Girardi M, Pellegrini L, Guglielmi G, Dell'Osso L, Cristaudo A. Plasma Brain-Derived Neurotrophic Factor (BDNF) and serum cortisol levels in a sample of workers exposed to occupational stress and suffering from Adjustment Disorders. Brain Behav 2019; 9:e01298. [PMID: 31197968 PMCID: PMC6625476 DOI: 10.1002/brb3.1298] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 03/05/2019] [Accepted: 04/03/2019] [Indexed: 01/13/2023] Open
Abstract
INTRODUCTION Decreased plasma BDNF (pBDNF) levels have been proposed as a biomarker in illness phases of mood disorders. Serum cortisol (seC) levels are an index of energy mobilization and stress. The aim of this cross-sectional study was to evaluate pBDNF and seC levels in workers exposed to occupational stress and suffering from Adjustment Disorders (AD) compared to healthy workers. METHODS Plasma BDNF and seC levels were measured by means of specific immunoassays in 64 AD patients and 38 healthy controls. Perceived and occupational stress was evaluated in patients and controls using the Psychological Stress Measure (PSM) and the Job Content Questionnaire (JCQ). Psychopatological symptoms in patients were assessed using specific rating scales. RESULTS Plasma BDNF levels resulted significantly higher in patients than in controls, whereas no significant differences were found for seC levels. In patients but not in controls pBDNF levels showed a significant positive correlation with seC levels. Perceived stress levels were positively correlated with all psychopatological rating scales scores. CONCLUSIONS BDNF could play a key role in the pathophysiology of stress-related disorders and its peripheral levels elevation could contribute to protect neurons under stress. Further research is needed focusing on biomarkers for stress-related disorders as a potential tool for the diagnosis and prevention of occupational diseases.
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Affiliation(s)
- Rodolfo Buselli
- Occupational Health Department, U.O. Medicina Preventiva del Lavoro, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Antonello Veltri
- Unità Operativa Complessa Psichiatria di Pisa, Dipartimento della Salute Mentale e Dipendenze, Azienda USL Toscana Nord Ovest, Pisa, Italy.,Fondazione BRF Onlus-Institute for Research in Psychiatry and Neuroscience, Lucca, Italy
| | - Sigrid Baldanzi
- Occupational Health Department, U.O. Medicina Preventiva del Lavoro, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Riccardo Marino
- Occupational Health Department, U.O. Medicina Preventiva del Lavoro, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Alessandra Bonotti
- Occupational Health Department, U.O. Medicina Preventiva del Lavoro, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Martina Chiumiento
- Occupational Health Department, U.O. Medicina Preventiva del Lavoro, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Michelle Girardi
- Occupational Health Department, U.O. Medicina Preventiva del Lavoro, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Luca Pellegrini
- Occupational Health Department, U.O. Medicina Preventiva del Lavoro, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Giovanni Guglielmi
- Occupational Health Department, U.O. Medicina Preventiva del Lavoro, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Liliana Dell'Osso
- Section of Psychiatry, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Alfonso Cristaudo
- Occupational Health Department, U.O. Medicina Preventiva del Lavoro, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy.,Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
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Saitoh K, Furihata R, Kaneko Y, Suzuki M, Takahashi S, Uchiyama M. Association of serum BDNF levels and the BDNF Val66Met polymorphism with the sleep pattern in healthy young adults. PLoS One 2018; 13:e0199765. [PMID: 29944703 PMCID: PMC6019675 DOI: 10.1371/journal.pone.0199765] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 06/13/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Brain-derived neurotrophic factor (BDNF) is widely expressed in the brain and plays an important role in neuronal maintenance, plasticity, and neurogenesis. Prior studies have found that decreased serum BDNF levels are associated with perceived stress, depression, or sleep disturbances in humans. STUDY OBJECTIVES To elucidate whether the serum BDNF levels and BDNF genotype were associated with the sleep pattern in healthy young adults. METHODS The study group consisted of 79 healthy paid volunteers (45 men, 34 women) aged 20 to 29 years. Serum BDNF levels were measured with an enzyme-linked immunosorbent assay, and a single-nucleotide polymorphism (Val66Met) in the BDNF gene was assessed with a TaqMan assay. Details of the sleep pattern were obtained from 1-week sleep/wake records. RESULTS Serum BDNF levels were significantly associated with sleep parameters on weekends, whereas no such association was found on weekdays. On weekends, longer total sleep time and time in bed, and later mid-sleep time were associated with lower serum BDNF levels. The difference between mid-sleep time on weekdays and that on weekends, otherwise known as social jetlag, was negatively associated with serum BDNF levels. Met/Met homozygotes of the BDNF Val66Met polymorphism had significantly longer time in bed on weekends than Val/Val homozygotes. Heterozygotes did not differ from Val/Val homozygotes. CONCLUSIONS We first found that serum BDNF levels and the BDNF Val66Met polymorphism in healthy young adults were associated with the sleep pattern on weekends but not with that on weekdays, suggesting that the systems involved in BDNF control may be linked to endogenous sleep characteristics rather than the socially constrained sleep schedule in healthy young adults.
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Affiliation(s)
- Kaori Saitoh
- Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan
| | - Ryuji Furihata
- Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan
| | - Yoshiyuki Kaneko
- Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan
| | - Masahiro Suzuki
- Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan
| | - Sakae Takahashi
- Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan
| | - Makoto Uchiyama
- Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan
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Laricchiuta D, Andolina D, Angelucci F, Gelfo F, Berretta E, Puglisi-Allegra S, Petrosini L. Cerebellar BDNF Promotes Exploration and Seeking for Novelty. Int J Neuropsychopharmacol 2018; 21:485-498. [PMID: 29471437 PMCID: PMC5932472 DOI: 10.1093/ijnp/pyy015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 01/29/2018] [Accepted: 02/13/2018] [Indexed: 12/11/2022] Open
Abstract
Background Approach system considered a motivational system that activates reward-seeking behavior is associated with exploration/impulsivity, whereas avoidance system considered an attentional system that promotes inhibition of appetitive responses is associated with active overt withdrawal. Approach and avoidance dispositions are modulated by distinct neurochemical profiles and synaptic patterns. However, the precise working of neurons and trafficking of molecules in the brain activity predisposing to approach and avoidance are yet unclear. Methods In 3 phenotypes of inbred mice, avoiding, balancing, and approaching mice, selected by using the Approach/Avoidance Y-maze, we analyzed endogenous brain levels of brain derived neurotrophic factor, one of the main secretory proteins with pleiotropic action. To verify the effects of the acute increase of brain derived neurotrophic factor, balancing and avoiding mice were bilaterally brain derived neurotrophic factor-infused in the cortical cerebellar regions. Results Approaching animals showed high levels of explorative behavior and response to novelty and exhibited higher brain derived neurotrophic factor levels in the cerebellar structures in comparison to the other 2 phenotypes of mice. Interestingly, brain derived neurotrophic factor-infused balancing and avoiding mice significantly increased their explorative behavior and response to novelty. Conclusions Cerebellar brain derived neurotrophic factor may play a role in explorative and novelty-seeking responses that sustain the approach predisposition.
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Affiliation(s)
- Daniela Laricchiuta
- Fondazione Santa Lucia, Rome, Italy
- Department of Psychology, Faculty of Medicine and Psychology, University “Sapienza” of Rome, Rome, Italy
| | - Diego Andolina
- Fondazione Santa Lucia, Rome, Italy
- Department of Psychology, Faculty of Medicine and Psychology, University “Sapienza” of Rome, Rome, Italy
| | - Francesco Angelucci
- Fondazione Santa Lucia, Rome, Italy
- Memory Clinic, Department of Neurology, Charles University, 2nd Faculty of Medicine and Motol University Hospital, Prague, Czech Republic
| | - Francesca Gelfo
- Fondazione Santa Lucia, Rome, Italy
- Department of TeCoS, Guglielmo Marconi University, Rome, Italy
| | - Erica Berretta
- Fondazione Santa Lucia, Rome, Italy
- Department of Psychology, Faculty of Medicine and Psychology, University “Sapienza” of Rome, Rome, Italy
- Behavioral Neuroscience PhD Programme
| | - Stefano Puglisi-Allegra
- Fondazione Santa Lucia, Rome, Italy
- Department of Psychology, Faculty of Medicine and Psychology, University “Sapienza” of Rome, Rome, Italy
| | - Laura Petrosini
- Fondazione Santa Lucia, Rome, Italy
- Department of Psychology, Faculty of Medicine and Psychology, University “Sapienza” of Rome, Rome, Italy
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Yoshimura R, Kishi T, Atake K, Katsuki A, Iwata N. Serum Brain-Derived Neurotrophic Factor, and Plasma Catecholamine Metabolites in People with Major Depression: Preliminary Cross-Sectional Study. Front Psychiatry 2018; 9:52. [PMID: 29541037 PMCID: PMC5835900 DOI: 10.3389/fpsyt.2018.00052] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND There are complicated interactions between catecholaminergic neurons and brain-derived neurotrophic factor (BDNF) in the brain. However, no reports have addressed the relationship among 3-methoxy-4-hydroxyphenylglycol (MHPG), homovanillic acid (HVA), and BDNF in the blood. OBJECTIVE This paper sought to investigate correlations between serum BDNF and plasma levels of MHPG and HVA in people with major depression (MD). MATERIALS AND METHODS A total of 148 patients (male/female 65/83, age 49.5 ± 12.1 years old) who satisfied criteria for MD based on the Diagnostic and Statistical Manual of Mental Disorders IV were enrolled in the present study. Plasma levels of MHPG and HVA were analyzed using high-performance liquid chromatography, and serum BDNF was measured using ELISA. RESULTS No interactions were observed between plasma HVA levels (mean ± SD = 4.5 ± 1.5 ng/mL) and age, sex, HAMD scores, or serum BDNF levels (mean ± SD = 9.8 ± 2.9 ng/mL). No correlations were not also observed between plasma MHPG levels (mean ± SD = 5.9 ± 2.1 ng/mL) and age, sex, the HAMD17 scores (mean ± SD = 22.2 ± 2.9 ng/mL), or serum BDNF levels. Serum BDNF levels were negatively associated with HAMD17 scores. CONCLUSION The results suggest that there are no significant correlations between catecholamine metabolites and BDNF in the blood for MDD patients.
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Affiliation(s)
- Reiji Yoshimura
- Department of Psychiatry, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Taro Kishi
- Department of Psychiatry, School of Medicine, Fujita Health University, Toyoake, Japan
| | - Kiyokazu Atake
- Department of Psychiatry, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Asuka Katsuki
- Department of Psychiatry, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Nakao Iwata
- Department of Psychiatry, School of Medicine, Fujita Health University, Toyoake, Japan
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Calapai G, Bonina F, Bonina A, Rizza L, Mannucci C, Arcoraci V, Laganà G, Alibrandi A, Pollicino C, Inferrera S, Alecci U. A Randomized, Double-Blinded, Clinical Trial on Effects of a Vitis vinifera Extract on Cognitive Function in Healthy Older Adults. Front Pharmacol 2017; 8:776. [PMID: 29163162 PMCID: PMC5671585 DOI: 10.3389/fphar.2017.00776] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 10/13/2017] [Indexed: 01/06/2023] Open
Abstract
Introduction: Gradual population aging is creating a new set of needs in the general population. Memory capacity decreases with age, and memory deficits are considered an early symptom of Alzheimer’s Disease (AD), one of the most prevalent cognitive disorders in older people. Numerous studies have shown that grape polyphenolic compounds (GPs) are able to attenuate cognitive impairment and reduce brain lesions in experimental AD animal models. These GP effects are associated with improvement in brain antioxidant status and prevention of free radical-induced neuronal damage. We designed a randomized, double-blind, placebo-controlled clinical trial to investigate the potential beneficial effects of a Vitis vinifera-based dietary supplement on cognitive function and neuropsychological status in healthy older adults. Methods: One-hundred eleven subjects were recruited and randomly divided in two groups: one group received the V. vinifera-based dietary supplement Cognigrape® for 12 weeks (250 mg/day) and the second group received placebo over the same period of time. Before and after the end of the supplementation period, cognitive function and neuropsychological status were evaluated using the Mini-Mental State Examination (MMSE), Beck Depression Inventory (BDI), Hamilton Anxiety Rating Scale (HARS), and Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) evaluations. Results: MMSE scores were significantly improved after supplementation with Cognigrape® in comparison with baseline levels (p < 0.0001) and placebo (r = 0.59, 0.95% CI 0.11, 1.22; p < 0.0001). Cognigrape® supplementation produced a significant reduction in BDI (-15.8%) and HARS (-24.9%) scores with respect to baseline levels (p < 0.0001) and placebo (p < 0.0001 for BDI and p < 0.05 for HARS). RBANS total score was significantly improved by Cognigrape® with respect to baseline levels and placebo (r = 0.55, 0.95% CI 0.48, 6.07; p < 0.0001). The comparison with the placebo revealed improvements in several parameters among participants receiving Cognigrape®: attention (p < 0.001); language (p < 0.05); immediate memory (p < 0.0001); and delayed memory (p < 0.0001). Visuospatial/constructional abilities were not modified. During the study, no adverse effects were detected. Conclusion: The results show that 12 weeks of Cognigrape® supplementation is safe, can improve physiological cognitive profiles, and can concurrently ameliorate negative neuropsychological status in healthy older adults.
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Affiliation(s)
- Gioacchino Calapai
- Department of Biomedical, Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Francesco Bonina
- Department of Drug Sciences, University of Catania, Catania, Italy
| | | | - Luisa Rizza
- Bionap srl, R&D Contrada Fureria, Belpasso, Italy
| | - Carmen Mannucci
- Department of Biomedical, Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Vincenzo Arcoraci
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Germana Laganà
- Italian College of General Practitioners and Primary Care, Florence, Italy
| | - Angela Alibrandi
- Department of Economics, Unit of Statistical and Mathematical Sciences, University of Messina, Messina, Italy
| | - Concetta Pollicino
- Department of Biomedical, Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Santi Inferrera
- Italian College of General Practitioners and Primary Care, Florence, Italy
| | - Umberto Alecci
- Italian College of General Practitioners and Primary Care, Florence, Italy
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9
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Kawada T. Plasma BDNF levels and anxiety in women with recovery from anorexia nervosa. Physiol Behav 2017; 177:263. [DOI: 10.1016/j.physbeh.2017.05.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 05/15/2017] [Accepted: 05/15/2017] [Indexed: 11/30/2022]
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10
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Ambrus L, Sunnqvist C, Ekman R, Träskman-Bendz L, Westrin Å. Plasma Brain-Derived Neurotrophic Factor and Psychopathology in Attempted Suicide. Neuropsychobiology 2017; 73:241-8. [PMID: 27327436 DOI: 10.1159/000446286] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 04/19/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIMS Increasing evidence suggests a link between brain-derived neurotrophic factor (BDNF) and suicidal behaviour (SB). Furthermore, decreased peripheral BDNF levels have been associated with clinical symptoms in various psychiatric disorders as well as with personality dimensions in healthy individuals. However, the relationship between BDNF and psychopathology is poorly investigated regarding SB. METHODS Plasma BDNF concentrations were analysed in 61 recent suicide attempters. Clinical symptoms were evaluated using the Comprehensive Psychopathological Rating Scale. Personality dimensions were assessed using the Marke-Nyman Temperament Scale. RESULTS Plasma BDNF correlated positively and significantly with the personality dimension Solidity but not with the other personality dimensions or with clinical symptoms. CONCLUSION BDNF plays an important role in the regulation of neuroplasticity and neurogenesis in humans. Our results indicate that lower BDNF concentrations are associated with higher levels of impulsiveness and changeability (low scores on the Solidity scale). Furthermore, low plasma BDNF levels may be proposed as a trait marker rather than a state marker for attempted suicide.
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Affiliation(s)
- Livia Ambrus
- Psychiatry Unit, Department of Clinical Sciences, Lund University, Lund, Sweden
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11
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A biological perspective on differences and similarities between burnout and depression. Neurosci Biobehav Rev 2016; 73:112-122. [PMID: 27993607 DOI: 10.1016/j.neubiorev.2016.12.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 10/10/2016] [Accepted: 12/09/2016] [Indexed: 12/26/2022]
Abstract
To compare and contrast burnout and depression is not only a conceptual issue, but may deliver important directions for treatment approaches and stabilize the awareness of disease which is essential for affected individuals. Because of the symptomatic overlap, it is a subject of multidimensional research and discussion to find specific signatures to differentiate between the two phenomena or to present evidence that they are different aspects of the same disorder. Both pathologies are regarded as stress-related disorders. Therefore, in this review burnout and depression are discussed on the basis of biological parameters, mainly heart rate variability (HRV) and brain-derived neurotrophic factor (BDNF), which are crucial to the stress response system. It emerges that instead of finding one specific discriminating marker, future research should rather concentrate on elaborating indices for burnout and depression which integrate combinations of parameters found in genetics, neurobiology, physiology and environment.
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Nomoto H, Baba H, Satomura E, Maeshima H, Takebayashi N, Namekawa Y, Suzuki T, Arai H. Serum brain-derived neurotrophic factor levels and personality traits in patients with major depression. BMC Psychiatry 2015; 15:33. [PMID: 25885038 PMCID: PMC4354762 DOI: 10.1186/s12888-015-0413-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 02/19/2015] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Brain-derived neurotrophic factor (BDNF) is a member of the neurotrophin family of growth factors. Previous studies have demonstrated lower serum BDNF levels in patients with major depressive disorder (MDD) and reported an association between BDNF levels and depression-related personality traits in healthy subjects. The aim of the present study was to explore for a possible association between peripheral BDNF levels and personality traits in patients with MDD. METHODS In this cross-sectional study, a total of 123 inpatients with MDD (Diagnostic and Statistical Manual for Mental Disorders, 4th edition) at the Juntendo University Koshigaya Hospital were recruited. Serum levels of BDNF were measured. Personality traits were assessed using the 125-item short version of the Temperament and Character Inventory (TCI). RESULTS Multiple regression analysis adjusted for age, sex, body mass index, dose of antidepressant, and depression severity showed that TCI Self-Directedness (SD) scores were negatively associated with serum BDNF levels (β = -0.23, p = 0.026). CONCLUSIONS MDD patients who have low SD did not show the reduction in serum BDNF levels that is normally associated with depressive state. Our findings suggest that depression-related biological changes may not occur in these individuals.
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Affiliation(s)
- Hiroshi Nomoto
- Department of Psychiatry, Juntendo University, School of Medicine, 2-1-1 Hongo, Tokyo, Bunkyo-ku, Japan.
| | - Hajime Baba
- Department of Psychiatry, Juntendo University, School of Medicine, 2-1-1 Hongo, Tokyo, Bunkyo-ku, Japan. .,Juntendo University Mood Disorder Project (JUMP), Department of Psychiatry, Juntendo University Koshigaya Hospital, 560 Fukuroyama, 343-0032, Koshigaya, Saitama, Japan.
| | - Emi Satomura
- Department of Psychiatry, Juntendo University, School of Medicine, 2-1-1 Hongo, Tokyo, Bunkyo-ku, Japan.
| | - Hitoshi Maeshima
- Department of Psychiatry, Juntendo University, School of Medicine, 2-1-1 Hongo, Tokyo, Bunkyo-ku, Japan. .,Juntendo University Mood Disorder Project (JUMP), Department of Psychiatry, Juntendo University Koshigaya Hospital, 560 Fukuroyama, 343-0032, Koshigaya, Saitama, Japan.
| | - Naoko Takebayashi
- Department of Psychiatry, Juntendo University, School of Medicine, 2-1-1 Hongo, Tokyo, Bunkyo-ku, Japan. .,Juntendo University Mood Disorder Project (JUMP), Department of Psychiatry, Juntendo University Koshigaya Hospital, 560 Fukuroyama, 343-0032, Koshigaya, Saitama, Japan.
| | - Yuki Namekawa
- Department of Psychiatry, Juntendo University, School of Medicine, 2-1-1 Hongo, Tokyo, Bunkyo-ku, Japan. .,Juntendo University Mood Disorder Project (JUMP), Department of Psychiatry, Juntendo University Koshigaya Hospital, 560 Fukuroyama, 343-0032, Koshigaya, Saitama, Japan.
| | - Toshihito Suzuki
- Department of Psychiatry, Juntendo University, School of Medicine, 2-1-1 Hongo, Tokyo, Bunkyo-ku, Japan. .,Juntendo University Mood Disorder Project (JUMP), Department of Psychiatry, Juntendo University Koshigaya Hospital, 560 Fukuroyama, 343-0032, Koshigaya, Saitama, Japan.
| | - Heii Arai
- Department of Psychiatry, Juntendo University, School of Medicine, 2-1-1 Hongo, Tokyo, Bunkyo-ku, Japan.
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de Souza FTA, Kummer A, Silva MLV, Amaral TMP, Abdo EN, Abreu MHNG, Silva TA, Teixeira AL. The association of openness personality trait with stress-related salivary biomarkers in burning mouth syndrome. Neuroimmunomodulation 2015; 22:250-5. [PMID: 25322841 DOI: 10.1159/000367714] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 08/20/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Burning mouth syndrome (BMS) is a chronic disorder defined as a burning sensation in the oral mucosa without evidence of pathological findings. Its pathophysiology is largely unknown, but psychiatric disorders and personality traits have been implicated. OBJECTIVE This study investigated whether there is any association between salivary biomarkers and personality traits in BMS patients. METHODS It was a cross-sectional, controlled study that evaluated 30 individuals with BMS and 32 controls. All subjects were assessed with a structured psychiatric interview (Mini International Neuropsychiatric Interview) and the Big Five inventory. Salivary levels of brain-derived neurotrophic factor (BDNF), neural growth factor, tumor necrosis factor-α, interleukin (IL)-6, IL-10 and cortisol were determined. RESULTS We found that BMS patients exhibited more traits of neuroticism and lower openness than controls. Openness showed a moderate and negative correlation with cortisol, BDNF and IL-6. CONCLUSION Personality traits are associated with salivary biomarkers in BMS.
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Affiliation(s)
- Fabrício T A de Souza
- Department of Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
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14
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Abstract
The study of the biological basis of personality is a timely research endeavor, with the aim of deepening our understanding of human nature. In recent years, a growing body of research has investigated the role of the brain derived neurotrophic factor (BDNF) in the context of individual differences across human beings, with a focus on personality traits. A large number of different approaches have been chosen to illuminate the role of BDNF for personality, ranging from the measurement of BDNF in the serum/plasma to molecular genetics to (genetic) brain imaging. The present review provides the reader with an overview of the current state of affairs in the context of BDNF and personality.
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Decreased plasma brain-derived neurotrophic factor and vascular endothelial growth factor concentrations during military training. PLoS One 2014; 9:e89455. [PMID: 24586790 PMCID: PMC3933459 DOI: 10.1371/journal.pone.0089455] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 01/20/2014] [Indexed: 01/09/2023] Open
Abstract
Decreased concentrations of plasma brain-derived neurotrophic factor (BDNF) and serum BDNF have been proposed to be a state marker of depression and a biological indicator of loaded psychosocial stress. Stress evaluations of participants in military mission are critically important and appropriate objective biological parameters that evaluate stress are needed. In military circumstances, there are several problems to adopt plasma BDNF concentration as a stress biomarker. First, in addition to psychosocial stress, military missions inevitably involve physical exercise that increases plasma BDNF concentrations. Second, most participants in the mission do not have adequate quality or quantity of sleep, and sleep deprivation has also been reported to increase plasma BDNF concentration. We evaluated plasma BDNF concentrations in 52 participants on a 9-week military mission. The present study revealed that plasma BDNF concentration significantly decreased despite elevated serum enzymes that escaped from muscle and decreased quantity and quality of sleep, as detected by a wearable watch-type sensor. In addition, we observed a significant decrease in plasma vascular endothelial growth factor (VEGF) during the mission. VEGF is also neurotrophic and its expression in the brain has been reported to be up-regulated by antidepressive treatments and down-regulated by stress. This is the first report of decreased plasma VEGF concentrations by stress. We conclude that decreased plasma concentrations of neurotrophins can be candidates for mental stress indicators in actual stressful environments that include physical exercise and limited sleep.
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Yasui-Furukori N, Tsuchimine S, Kaneda A, Sugawara N, Ishioka M, Kaneko S. Association between plasma brain-derived neurotrophic factor levels and personality traits in healthy Japanese subjects. Psychiatry Res 2013; 210:220-3. [PMID: 23806624 DOI: 10.1016/j.psychres.2013.05.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 05/04/2013] [Accepted: 05/07/2013] [Indexed: 11/17/2022]
Abstract
Although depression has been associated with decreased brain-derived neurotrophic factor (BDNF) levels for specific personality traits, there is a little information regarding the association between peripheral BDNF levels and such traits. The sample consisted of 178 healthy Japanese subjects (age range, 37.4 ± 11.5 years). All subjects filled out the Temperament and Character Inventory (TCI). Plasma BDNF levels were measured using the enzyme-linked immunosorbent assay. A simple regression analysis revealed that plasma BDNF levels were significantly correlated with harm avoidance (r=-0.177, p=0.018) and self-directedness scores (r=0.165, p=0.028). Our findings suggest that plasma BDNF levels are associated with depression-related personality traits.
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Affiliation(s)
- Norio Yasui-Furukori
- Department of Neuropsychiatry, Hirosaki University School of Medicine, Hirosaki 036-8562, Japan.
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Pu S, Nakagome K, Yamada T, Yokoyama K, Matsumura H, Terachi S, Mitani H, Adachi A, Kaneko K. Relationship between prefrontal function during a cognitive task and social functioning in male Japanese workers: a multi-channel near-infrared spectroscopy study. Psychiatry Res 2013; 214:73-9. [PMID: 23932226 DOI: 10.1016/j.pscychresns.2013.05.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 03/15/2013] [Accepted: 05/18/2013] [Indexed: 10/26/2022]
Abstract
To investigate whether prefrontal function during a cognitive task reflects the social functioning of male Japanese workers, prefrontal function during a working memory task in 181 male workers was measured by multi-channel near-infrared spectroscopy (NIRS). Social functioning was assessed using the Social Adaptation Self-Evaluation Scale (SASS). The results indicated that cortical oxygenation level increases in dorsolateral prefrontal region showed significant positive correlations with the interest and motivation factor scores on the SASS. These results suggest that dorsolateral prefrontal function is associated with the interest and motivation factor in social functioning in male workers and that NIRS could be an addition to the medical tools for monitoring these characteristics on mental health examination.
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Affiliation(s)
- Shenghong Pu
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan.
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Ikenouchi-Sugita A, Yoshimura R, Sugita K, Hori H, Yamada K, Sakaue M, Nakamura J. The effects of a walking intervention on depressive feelings and social adaptation in healthy workers. J UOEH 2013; 35:1-8. [PMID: 23475018 DOI: 10.7888/juoeh.35.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The effects of walking on mental health problems among healthy Japanese workers are not fully understood. In the present study, we investigated the effects of a four-week walking program on the psychological functioning of a nonclinical sample of healthy workers in Japan.A total of 606 healthy subjects were enrolled in the study and were evaluated by the Zung Self-rating Depression Scale (SDS) and the Social Adaptation Self-evaluation Scale (SASS) both before and after the walking program.The subjects were divided into an exercising group and a non-exercising group.There were significant differences in the SDS and SASS scores between the exercising and the non-exercising groups.Following the walking program, the non-exercising group's SDS scores decreased and their SASS scores increased compared to before the walking program.In contrast, the SDS and SASS scores of the exercising group did not change.These results suggest that subjects who exercise regularly experience fewer depressive feelings and exhibit better social adaptation in the workplace than those who do not exercise.The walking program improved depressive feelings and social adaptation in the non-exercising group.
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Zhou H, Zhao Y, Yu X, Chen S, Chen D, Wang W, Wang Z, Wu X, Zhang Z. The association between absent lunula and depression in depressive outpatients: a case-control study. Psychiatry Res 2013; 205:176-8. [PMID: 22959530 DOI: 10.1016/j.psychres.2012.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Revised: 07/30/2012] [Accepted: 08/11/2012] [Indexed: 10/27/2022]
Abstract
Absent lunula can progressively develop in a person who previously had a normal-sized lunula and can be associated with various systemic disorders. In this case-control study we hypothesised that absent lunula is associated with depression. The study comprised 332 depressive outpatients as well as 367 age- and sex-matched controls, all of whom were assessed and screened by the Zung Self-rating Depression Scale (ZSDS). The presence of absent lunula in all fingers except the little finger on the right hand of subjects was examined and the number of absent lunula was calculated as 0, 1, 2, 3 and 4. It was revealed that there was no significant difference in age and gender between controls and depressive outpatients. In the order of 0, 1, 2, 3 and 4 absent lunula, the percentages were 68.1, 7.4, 9.5, 5.2 and 9.8 in controls, while it was 17.2, 15.4, 22.3, 21.4 and 23.7 in depressive outpatients with significant difference while they were 17.2, 15.4, 22.3, 21.4 and 23.7 in depressive outpatients, significantly different compared with controls. Logistic regression analysis on depressive outpatients indicated that severe depression was not associated with age and sex but markedly associated with number of absent lunula. Our study found that depression was associated with absent lunula, and severe depression was associated with a greater number of absent lunula.
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Affiliation(s)
- Haitao Zhou
- Neurology Department, First Clinical Medical College, Fujian Medical University, Fuzhou, China
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20
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Correlation with statistical significance and its explanation rate: comment on Minelli et al., "BDNF serum levels, but not BDNF Val66Met genotype, are correlated with personality traits in healthy subjects." (Eur Arch Psychiatry Clin Neurosci doi:10.1007/s00406-011-0189-3). Eur Arch Psychiatry Clin Neurosci 2012; 262:361-2. [PMID: 21830105 DOI: 10.1007/s00406-011-0236-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Accepted: 07/29/2011] [Indexed: 10/17/2022]
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Watanabe I, Li GY, Imamura Y, Nabeta H, Kunitake Y, Ishii H, Haraguchi M, Kojima N, Yamada S. Association of saliva 3-methoxy-4-hydroxyphenylglycol levels and a later depressive state in older subjects living in a rural community: 3-year follow-up study. Int J Geriatr Psychiatry 2012; 27:321-6. [PMID: 21538541 DOI: 10.1002/gps.2729] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Accepted: 03/09/2011] [Indexed: 11/07/2022]
Abstract
OBJECTIVE The aim of the study was to examine the association of saliva levels of 3-methoxy-4-hydroxyphenylglycol (sMHPG) with a later depressive state in older people living in a rural community. METHODS Baseline sMHPG levels were measured in 214 older subjects followed by completion of the Beck Depression Inventory (BDI) from 2004 to 2006 (time A). The same cohort underwent BDI again from 2007 to 2009 (time B). RESULTS One hundred forty-four subjects (44 men, 100 women) were reassessed by the BDI. Baseline sMHPG levels in men with a BDI score of ≤9 at time A and a BDI score of ≥10 at time B were significantly higher than those in men with a BDI score of ≤9 at times A and B. In men, there was a significant correlation between baseline sMHPG levels and BDI score at time B (r = 0.40, p = 0.007) but not at time A (r = 0.29, p = 0.06). This association was not significant in women. CONCLUSION These data indicate that high sMHPG levels at time A could be associated with a later depressive state in older men living in a community.
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Affiliation(s)
- Itaru Watanabe
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
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Abstract
OBJECTIVE Animal models and clinical studies suggest that brain-derived neurotrophic factor (BDNF) is involved in the pathophysiology of depression. We test whether serum and plasma levels of BDNF are associated with trait neuroticism and its facets and with state measures of depressive symptoms. METHODS In a community-based cohort (N = 2099), we measured serum and plasma BDNF concentrations and administered the Revised NEO Personality Inventory and the Center for Epidemiological Studies Depression Scale. Covariates included age, sex, cigarette smoking, obesity, and antidepressant use. RESULTS Serum BDNF concentrations were inversely related to neuroticism (r = -0.074, p < .001), in particular the depression facet (r = -0.08, p < .001). Lower BDNF concentrations were also associated with severe depressive symptoms (Center for Epidemiological Studies Depression Scale ≥ 28; odds ratio = 0.906; 95% confidence interval = 0.851-0.965). The association of serum BDNF with neuroticism was independent of depressive symptoms, indicating that serum BDNF might represent a biological correlate of neuroticism and not just of transient depressive states. Plasma BDNF was not associated with measures of depression. CONCLUSIONS Our study suggests that lower serum BDNF is associated with both a dispositional vulnerability to depression and acute depressive states in the general population.
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