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Jhaveri DJ, McGonigal A, Becker C, Benoliel JJ, Nandam LS, Soncin L, Kotwas I, Bernard C, Bartolomei F. Stress and Epilepsy: Towards Understanding of Neurobiological Mechanisms for Better Management. eNeuro 2023; 10:ENEURO.0200-23.2023. [PMID: 37923391 PMCID: PMC10626502 DOI: 10.1523/eneuro.0200-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/03/2023] [Accepted: 09/20/2023] [Indexed: 11/07/2023] Open
Abstract
Stress has been identified as a major contributor to human disease and is postulated to play a substantial role in epileptogenesis. In a significant proportion of individuals with epilepsy, sensitivity to stressful events contributes to dynamic symptomatic burden, notably seizure occurrence and frequency, and presence and severity of psychiatric comorbidities [anxiety, depression, posttraumatic stress disorder (PTSD)]. Here, we review this complex relationship between stress and epilepsy using clinical data and highlight key neurobiological mechanisms including the hypothalamic-pituitary-adrenal (HPA) axis dysfunction, altered neuroplasticity within limbic system structures, and alterations in neurochemical pathways such as brain-derived neurotrophic factor (BNDF) linking epilepsy and stress. We discuss current clinical management approaches of stress that help optimize seizure control and prevention, as well as psychiatric comorbidities associated with epilepsy. We propose that various shared mechanisms of stress and epilepsy present multiple avenues for the development of new symptomatic and preventative treatments, including disease modifying therapies aimed at reducing epileptogenesis. This would require close collaborations between clinicians and basic scientists to integrate data across multiple scales, from genetics to systems biology, from clinical observations to fundamental mechanistic insights. In future, advances in machine learning approaches and neuromodulation strategies will enable personalized and targeted interventions to manage and ultimately treat stress-related epileptogenesis.
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Affiliation(s)
- Dhanisha J Jhaveri
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4067, Australia
- Mater Research Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4067, Australia
| | - Aileen McGonigal
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4067, Australia
- Mater Research Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4067, Australia
- Mater Epilepsy Unit, Department of Neurosciences, Mater Hospital, Brisbane, QLD 4101, Australia
| | - Christel Becker
- Institut National de la Santé et de la Recherche Médicale, Unité 1124, Université Paris Cité, Paris, 75006, France
| | - Jean-Jacques Benoliel
- Institut National de la Santé et de la Recherche Médicale, Unité 1124, Université Paris Cité, Paris, 75006, France
- Site Pitié-Salpêtrière, Service de Biochimie Endocrinienne et Oncologie, Assistance Publique Hôpitaux de Paris, Sorbonne Université, Paris, 75651, France
| | - L Sanjay Nandam
- Turner Inst for Brain & Mental Health, Faculty of Medicine, Nursing and Health Sciences, School of Psychological Sciences, Monash University, Melbourne, 3800, Australia
| | - Lisa Soncin
- Institut National de la Santé et de la Recherche Médicale, Institut de Neurosciences des Systèmes, Aix Marseille University, Marseille, 13005, France
- Laboratoire d'Anthropologie et de Psychologie Cliniques, Cognitives et Sociales, Côte d'Azur University, Nice, 06300, France
| | - Iliana Kotwas
- Epileptology and Cerebral Rhythmology, Assistance Publique Hôpitaux de Marseille, Timone Hospital, Marseille, 13005, France
| | - Christophe Bernard
- Institut National de la Santé et de la Recherche Médicale, Institut de Neurosciences des Systèmes, Aix Marseille University, Marseille, 13005, France
| | - Fabrice Bartolomei
- Institut National de la Santé et de la Recherche Médicale, Institut de Neurosciences des Systèmes, Aix Marseille University, Marseille, 13005, France
- Epileptology and Cerebral Rhythmology, Assistance Publique Hôpitaux de Marseille, Timone Hospital, Marseille, 13005, France
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McGonigal A, Becker C, Fath J, Hammam K, Baumstarck K, Fernandes S, Giusiano B, Dufau S, Rheims S, Maillard L, Biraben A, Benoliel JJ, Bernard C, Bartolomei F. BDNF as potential biomarker of epilepsy severity and psychiatric comorbidity: pitfalls in the clinical population. Epilepsy Res 2023; 195:107200. [PMID: 37542747 DOI: 10.1016/j.eplepsyres.2023.107200] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 08/07/2023]
Abstract
BACKGROUND Several studies implicate brain-derived neurotrophic factor (BDNF) in the pathophysiology of epilepsy. In particular, preclinical data suggest that lower serum BDNF is a biomarker of epilepsy severity and psychiatric comorbidities. We tested this prediction in clinical epilepsy cohorts. METHODS Patients with epilepsy were recruited from 4 epilepsy centers in France and serum BDNF was quantified. Clinical characteristics including epilepsy duration, classification, localization, etiology, seizure frequency and drug resistance were documented. Presence of individual anti-seizure medications (ASM) was noted. Screening for depression and anxiety symptoms was carried out in all patients using the NDDI-E and the GAD-7 scales. In patients with positive screening for anxiety and/or depression, detailed psychiatric testing was performed including the Mini International Neuropsychiatric Interview (MINI), STAI-Y, Holmes Rahe Stressful Events Scale and Beck Depression Interview. Descriptive analysis was applied. Spearman's test and Pearson's co-efficient were used to assess the association between BDNF level and continuous variables. For discrete variables, comparison of means (Student's t-test, Mann-Whitney u-test) was used to compare mean BDNF serum level between groups. Multivariate analysis was performed using a regression model. RESULTS No significant correlation was found between serum BDNF level and clinical features of epilepsy or measures of depression. The main group-level finding was that presence of any ASM at was associated with increased BDNF; this effect was particularly significant for valproate and perampanel. CONCLUSION Presence of ASM affects serum BDNF levels in patients with epilepsy. Future studies exploring BDNF as a possible biomarker of epilepsy severity and/or psychiatric comorbidity must control for ASM effects.
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Affiliation(s)
- Aileen McGonigal
- Mater Hospital, Brisbane and Faculty of Medicine, University of Queensland, Australia; APHM, Timone Hospital, Epileptology and Cerebral Rhythmology, Marseille, France; Aix Marseille Univ, INSERM, INS, Inst Neurosci Syst, Marseille, France.
| | | | - Julia Fath
- Université Paris Cité, INSERM, U1124, Paris, France
| | - Kahina Hammam
- APHM, Timone Hospital, Epileptology and Cerebral Rhythmology, Marseille, France
| | - Karine Baumstarck
- Aix-Marseille Univ, EA 3279: CEReSS - Health Service Research and Quality of Life Center, Marseille, France; Unité d'Aide Méthodologique à la Recherche Clinique, APHM, Timone Hospital, Marseille, France
| | - Sara Fernandes
- Aix-Marseille Univ, EA 3279: CEReSS - Health Service Research and Quality of Life Center, Marseille, France; Unité d'Aide Méthodologique à la Recherche Clinique, APHM, Timone Hospital, Marseille, France
| | - Bernard Giusiano
- Aix Marseille Univ, INSERM, INS, Inst Neurosci Syst, Marseille, France; Aix-Marseille Univ, EA 3279: CEReSS - Health Service Research and Quality of Life Center, Marseille, France; Unité d'Aide Méthodologique à la Recherche Clinique, APHM, Timone Hospital, Marseille, France
| | - Stéphane Dufau
- Laboratoire de Psychologie Cognitive, CNRS & Aix-Marseille University, France
| | - Sylvain Rheims
- Department of Functional Neurology and Epileptology, Hospices Civils de Lyon and University of Lyon, Lyon, France; Lyon's Neuroscience Research Center, INSERM U1028 / CNRS UMR 5292, Lyon, France; Epilepsy Institute, Lyon, France
| | - Louis Maillard
- Department of Neurology, University Hospital of Nancy, Lorraine University, Nancy, France; Neurosciences of Systems and Cognition Project, BioSiS Department (Department Biologie, Signaux et Systèmes en Cancérologie et Neurosciences), Research Center for Automatic Control of Nancy (CRAN), Lorraine University, CNRS, UMR 7039, Vandoeuvre, France
| | - Arnaud Biraben
- Centre Hospitalier Universitaire Pontchaillou, F-35000, Rennes, France
| | - Jean-Jacques Benoliel
- Université Paris Cité, INSERM, U1124, Paris, France; APHP GH Sorbonne Université, Site Pitié-Salpêtrière, Service de Biochimie Endocrinienne et Oncologie, Paris, France
| | | | - Fabrice Bartolomei
- APHM, Timone Hospital, Epileptology and Cerebral Rhythmology, Marseille, France; Aix Marseille Univ, INSERM, INS, Inst Neurosci Syst, Marseille, France
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Egbenya DL, Hussain S, Lai YC, Anderson AE, Davanger S. Synapse-specific changes in Arc and BDNF in rat hippocampus following chronic temporal lobe epilepsy. Neurosci Res 2022; 191:1-12. [PMID: 36535366 DOI: 10.1016/j.neures.2022.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 12/06/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Expression of immediate early genes (IEGs) in the brain is important for synaptic plasticity, and probably also in neurodegenerative conditions. To understand the cellular mechanisms of the underlying neuropathophysiological processes in epilepsy, we need to pinpoint changes in concentration of synaptic plasticity-related proteins at subsynaptic levels. In this study, we examined changes in synaptic expression of Activity-regulated cytoskeleton-associated (Arc) and Brai Derived Neurotrophic Factor (BDNF) in a rat model of kainate-induced temporal lobe epilepsy (TLE). Western blotting showed reduced concentrations of Arc and increased concentrations of BDNF in hippocampal synaptosomes in chronic TLE rats. Then, using quantitative electron microscopy, we found corresponding changes in subsynaptic regions in the hippocampus. Specifically, we detected significant reductions in the concentrations of Arc in the presynaptic terminal of Schaffer collateral glutamatergic synapses in the stratum radiatum of the CA1 area in TLE, as well as in their adjacent postsynaptic spines. In CA3, there was a significant reduction of Arc only in the presynaptic terminal cytoplasm. Conversely, in CA3, there was a significant increase in the expression of BDNF in the presynaptic terminal, but not in the postsynaptic spine. Significant increase in BDNF concentration in the CA1 postsynaptic density was also obtained. We hypothesize that the observed changes in Arc and BDNF may contribute to both cognitive impairment and increased excitotoxic vulnerability in chronic epilepsy.
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Affiliation(s)
- Daniel L Egbenya
- Laboratory for Synaptic Plasticity, Division of Anatomy, Department of Molecular Medicine, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway; Department of Physiology, School of Medical Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Suleman Hussain
- Laboratory for Synaptic Plasticity, Division of Anatomy, Department of Molecular Medicine, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway; Institute of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway.
| | - Yi-Chen Lai
- Jan and Dan Duncan Neurological Research Institute, Baylor College of Medicine, Houston, TX, USA
| | - Anne E Anderson
- Jan and Dan Duncan Neurological Research Institute, Baylor College of Medicine, Houston, TX, USA
| | - Svend Davanger
- Laboratory for Synaptic Plasticity, Division of Anatomy, Department of Molecular Medicine, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
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Liu T, Dai Y, Xu M, Chen Y, Xia T, Zhao X. Mild acute stress prevents the memory impairment induced by long-term isoflurane anesthesia. Transl Neurosci 2022; 13:421-429. [PMID: 36518560 PMCID: PMC9719393 DOI: 10.1515/tnsci-2022-0261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 10/26/2022] [Accepted: 11/02/2022] [Indexed: 12/05/2022] Open
Abstract
Objectives Long-term isoflurane anesthesia exposure could result in postoperative cognitive dysfunction (POCD). Preoperative stress is also reported to be a risk factor of POCD. However, it is unknown whether acute stress could impair memory after long-term isoflurane anesthesia. Methods In this study, we categorized the mice with acute stress into mild (30 min restraint stress), moderate (60 min restraint stress), and severe (120 min restraint stress) stress groups and then we used Open-Field Test (OFT) to detect whether different scales of acute restraint stress successfully induced acute stress in mice. The memory performance of mice was measured using contextual and cued memory test, and the brain-derived neurotrophic factor protein levels of hippocampus was detected by Western blot. Results We verified that mild stress has pro-cognitive effect, but severe stress has amnestic effect. Moreover, we found that mild and moderate other than severe acute stress could partially attenuate the memory impairment induced by long-term isoflurane anesthesia. Conclusion Mild and moderate acute stress could partially attenuate the memory impairment induced by long-term isoflurane anesthesia.
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Affiliation(s)
- Tiantian Liu
- Medical School of Nanjing University, Nanjing, China,Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yutong Dai
- Medical School of Nanjing University, Nanjing, China,Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Minhui Xu
- Medical School of Nanjing University, Nanjing, China
| | - Ying Chen
- Medical School of Nanjing University, Nanjing, China,Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
| | - Tianjiao Xia
- Medical School of Nanjing University, Nanjing, China
| | - Xin Zhao
- Department of Anesthesiology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
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Altered BDNF levels are associated with cognitive impairment in Parkinson's disease patients with depression. Parkinsonism Relat Disord 2022; 103:122-128. [DOI: 10.1016/j.parkreldis.2022.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/17/2022]
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Li J, Zhang X, Jiang J, Zhang B, Tang Y, Zhang T, Jia Y, Li Q, Xia M, Sheng J, Li C, Wang J. Comparison of electroconvulsive therapy and magnetic seizure therapy in schizophrenia: Structural changes/neuroplasticity. Psychiatry Res 2022; 312:114523. [PMID: 35378453 DOI: 10.1016/j.psychres.2022.114523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 03/16/2022] [Accepted: 03/20/2022] [Indexed: 12/13/2022]
Abstract
Electroconvulsive therapy (ECT) can effectively reduce the symptoms of schizophrenia, but may also impair cognitive function. A potential alternative is magnetic seizure therapy (MST), which has shown comparable efficacy with less severe cognitive disruption. This study compared ECT to MST for clinical efficacy and cognitive side effects. In addition, we examined the possible contributions of hippocampal volume changes and enhanced brain derived neurotrophic factor (BDNF) signaling to the therapeutic responses. Thirty-four confirmed schizophrenia patients were allocated to receive ECT (n = 16) or MST (n = 18) over a 4-week period. Schizophrenia symptoms were measured by PANSS, cognition by the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS), and serum BDNF and its precursor proBDNF by ELISA at baseline and following ECT or MST. Both treatments reduced PANSS scores with comparable efficacy, while MST was superior for preservation of RBANS language score. ECT significantly increased the volumes of the bilateral hippocampus and multiple subfields, while MST had no effect on hippocampal volume. The change in right hippocampal volume was correlated with proBDNF change among ECT and MST non-responders (< 25% decrease in PANSS score). MST reduced schizophrenia symptoms as effectively as ECT with slightly better preservation of cognitive function.
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Affiliation(s)
- Jin Li
- Institute of Mental Health, Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 11 Guangqian Road, Suzhou 215137, Jiangsu, China.
| | - Xiaobin Zhang
- Institute of Mental Health, Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 11 Guangqian Road, Suzhou 215137, Jiangsu, China.
| | - Jiangling Jiang
- Shanghai Key Laboratory of Psychotic Disorders, Department of EEG and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China
| | - Bin Zhang
- The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China.
| | - Yingying Tang
- Shanghai Key Laboratory of Psychotic Disorders, Department of EEG and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China
| | - Tianhong Zhang
- Shanghai Key Laboratory of Psychotic Disorders, Department of EEG and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China
| | - Yuping Jia
- Shanghai Key Laboratory of Psychotic Disorders, Department of EEG and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China.
| | - Qingwei Li
- Shanghai Key Laboratory of Psychotic Disorders, Department of EEG and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China.
| | - Mengqing Xia
- Shanghai Key Laboratory of Psychotic Disorders, Department of EEG and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China
| | - Jianhua Sheng
- Shanghai Key Laboratory of Psychotic Disorders, Department of EEG and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China.
| | - Chunbo Li
- Shanghai Key Laboratory of Psychotic Disorders, Department of EEG and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China.
| | - Jijun Wang
- Shanghai Key Laboratory of Psychotic Disorders, Department of EEG and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China.
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Val66et Polymorphism Is Associated with Altered Motor-Related Oscillatory Activity in Youth with Cerebral Palsy. Brain Sci 2022; 12:brainsci12040435. [PMID: 35447966 PMCID: PMC9027490 DOI: 10.3390/brainsci12040435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 01/27/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) plays a critical role in the capacity for neuroplastic change. A single nucleotide polymorphism of the BDNF gene is well known to alter the activity-dependent release of the protein and may impact the capacity for neuroplastic change. Numerous studies have shown altered sensorimotor beta event-related desynchronization (ERD) responses in youth with cerebral palsy (CP), which is thought to be directly related to motor planning. The objective of the current investigation was to use magnetoencephalography (MEG) to evaluate whether the BDNF genotype affects the strength of the sensorimotor beta ERD seen in youth with CP while youth with CP performed a leg isometric target matching task. In addition, we collected saliva samples and used polymerase chain reaction (PCR) amplification to determine the status of the amino acid fragment containing codon 66 of the BDNF gene. Our genotyping results identified that 25% of the youth with CP had a Val66Met or Met66Met polymorphism at codon 66 of the BDNF gene. Furthermore, we identified that the beta ERD was stronger in youth with CP who had the Val66Met or Met66Met polymorphism in comparison to those without the polymorphism (p = 0.042). Overall, these novel findings suggest that a polymorphism at the BDNF gene may alter sensorimotor cortical oscillations in youth with CP.
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BDNF Val66Met gene polymorphism modulates brain activity following rTMS-induced memory impairment. Sci Rep 2022; 12:176. [PMID: 34997117 PMCID: PMC8741781 DOI: 10.1038/s41598-021-04175-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 12/16/2021] [Indexed: 01/19/2023] Open
Abstract
The BDNF Val66Met gene polymorphism is a relevant factor explaining inter-individual differences to TMS responses in studies of the motor system. However, whether this variant also contributes to TMS-induced memory effects, as well as their underlying brain mechanisms, remains unexplored. In this investigation, we applied rTMS during encoding of a visual memory task either over the left frontal cortex (LFC; experimental condition) or the cranial vertex (control condition). Subsequently, individuals underwent a recognition memory phase during a functional MRI acquisition. We included 43 young volunteers and classified them as 19 Met allele carriers and 24 as Val/Val individuals. The results revealed that rTMS delivered over LFC compared to vertex stimulation resulted in reduced memory performance only amongst Val/Val allele carriers. This genetic group also exhibited greater fMRI brain activity during memory recognition, mainly over frontal regions, which was positively associated with cognitive performance. We concluded that BDNF Val66Met gene polymorphism, known to exert a significant effect on neuroplasticity, modulates the impact of rTMS both at the cognitive as well as at the associated brain networks expression levels. This data provides new insights on the brain mechanisms explaining cognitive inter-individual differences to TMS, and may inform future, more individually-tailored rTMS interventions.
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West GL, Konishi K, MacDonald K, Ni A, Joober R, Bohbot VD. The BDNF val66met polymorphism is associated with decreased use of landmarks and decreased fMRI activity in the hippocampus during virtual navigation. Eur J Neurosci 2021; 54:6406-6421. [PMID: 34467592 DOI: 10.1111/ejn.15431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/07/2021] [Accepted: 07/08/2021] [Indexed: 12/01/2022]
Abstract
People can navigate in a new environment using multiple strategies dependent on different memory systems. A series of studies have dissociated between hippocampus-dependent 'spatial' navigation and habit-based 'response' learning mediated by the caudate nucleus. The val66met polymorphism of the brain-derived neurotrophic factor (BDNF) gene leads to decreased secretion of BDNF in the brain, including the hippocampus. Here, we aim to investigate the role of the BDNF val66met polymorphism on virtual navigation behaviour and brain activity in healthy older adults. A total of 139 healthy older adult participants (mean age = 65.8 ± 4.4 years) were tested in this study. Blood samples were collected, and BDNF val66met genotyping was performed. Participants were divided into two genotype groups: val homozygotes and met carriers. Participants were tested on virtual dual-solution navigation tasks in which they could use either a hippocampus-dependent spatial strategy or a caudate nucleus-dependent response strategy to solve the task. A subset of the participants (n = 66) were then scanned in a 3T functional magnetic resonance imaging (fMRI) scanner while engaging in another dual-solution navigation task. BDNF val/val individuals and met carriers did not differ in learning performance. However, the two BDNF groups differed in learning strategy. BDNF val/val individuals relied more on landmarks to remember target locations (i.e., increased use of flexible spatial learning), while met carriers relied more on sequences and patterns to remember target locations (i.e., increased use of inflexible response learning). Additionally, BDNF val/val individuals had more fMRI activity in the hippocampus compared with BDNF met carriers during performance on the navigation task. This is the first study to show in older adults that BDNF met carriers use alternate learning strategies from val/val individuals and to identify differential brain activation of this behavioural difference between the two groups.
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Affiliation(s)
- Greg L West
- Department of Psychology, University of Montreal, Montréal, Quebec, Canada
| | - Kyoko Konishi
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Verdun, Quebec, Canada
| | - Kathleen MacDonald
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Verdun, Quebec, Canada
| | - Anjie Ni
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Verdun, Quebec, Canada
| | - Ridha Joober
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Verdun, Quebec, Canada
| | - Veronique D Bohbot
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Verdun, Quebec, Canada
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Li C, Meng F, Lei Y, Liu J, Liu J, Zhang J, Liu F, Liu C, Guo M, Lu XY. Leptin regulates exon-specific transcription of the Bdnf gene via epigenetic modifications mediated by an AKT/p300 HAT cascade. Mol Psychiatry 2021; 26:3701-3722. [PMID: 33106599 PMCID: PMC8550971 DOI: 10.1038/s41380-020-00922-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/07/2020] [Accepted: 10/08/2020] [Indexed: 01/17/2023]
Abstract
Leptin is an adipocyte-derived hormone with pleiotropic functions affecting appetite and mood. While leptin's role in the regulation of appetite has been extensively studied in hypothalamic neurons, its function in the hippocampus, where it regulates mood-related behaviors, is poorly understood. Here, we show that the leptin receptor (LepRb) colocalizes with brain-derived neurotrophic factor (BDNF), a key player in the pathophysiology of major depression and the action of antidepressants, in the dentate gyrus of the hippocampus. Leptin treatment increases, whereas deficiency of leptin or leptin receptors decreases, total Bdnf mRNA levels, with distinct expression profiles of specific exons, in the hippocampus. Epigenetic analyses reveal that histone modifications, but not DNA methylation, underlie exon-specific transcription of the Bdnf gene induced by leptin. This is mediated by stimulation of AKT signaling, which in turn activates histone acetyltransferase p300 (p300 HAT), leading to changes in histone H3 acetylation and methylation at specific Bdnf promoters. Furthermore, deletion of Bdnf in the dentate gyrus, or specifically in LepRb-expressing neurons, abolishes the antidepressant-like effects of leptin. These findings indicate that leptin, acting via an AKT-p300 HAT epigenetic cascade, induces exon-specific Bdnf expression, which in turn is indispensable for leptin-induced antidepressant-like effects.
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Affiliation(s)
- Chen Li
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Shandong, China.
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, GA, USA.
| | - Fantao Meng
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Shandong, China
| | - Yun Lei
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Jing Liu
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Jing Liu
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Shandong, China
| | - Jingyan Zhang
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Fang Liu
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Cuilan Liu
- Institute for Metabolic & Neuropsychiatric Disorders, Binzhou Medical University Hospital, Shandong, China
| | - Ming Guo
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Xin-Yun Lu
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, GA, USA.
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
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Hermann R, Schaller A, Lay D, Bloch W, Albus C, Petrowski K. Effect of acute psychosocial stress on the brain-derived neurotrophic factor in humans - a randomized cross within trial. Stress 2021; 24:442-449. [PMID: 33236949 DOI: 10.1080/10253890.2020.1854218] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
The brain-derived neurotrophic factor (BDNF) is involved in the plasticity and development of the central nervous system. Thereby the protein synthesis is highly related to neuronal activity, and its signaling pathways are associated with several substances like, e.g. glucocorticoids, which seem to be able to activate BDNF-Tropomyosin receptor kinase B (TrkB). While there is evidence that acute physical stress can result in advantageous physiological outcomes like an enhanced BDNF level, outcome parameters in response to psychosocial stress are primarily focused on psychological parameters. The existing literature pointing on the impact of acute psychosocial stress on physiological parameters is controversial and differs depending on the species, the stressor used, and the study methodology. It was hypothesized that an acute standardized psychosocial stressor would increase the BDNF level and therefore show beneficial physiological outcome parameters through psychosocial stress. The serum BDNF levels of 32 healthy young males (M = 24.31 years of age, SD = 3.35), who performed the Trier Social Stress Test (TSST), were assessed and compared to a control condition. To prove the stress-generating effect of the TSST, additional cortisol levels were measured. Acute psychosocial stress significantly increased the serum BDNF- and the cortisol-level, whereby no alteration was found during the control. This study expands the rare literature focusing on the effect of an acute standardized psychosocial stressor on the BDNF level in healthy humans, including a control condition. Implications for future studies are being discussed.
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Affiliation(s)
- Robin Hermann
- Working group physical activity-related preventive research, Institute of Movement Therapy and Movement-oriented Prevention and Rehabilitation, German Sport University Cologne, Koln, Germany
- Medical Psychology and Medical Sociology, University Medicine Mainz, Mainz, Germany
| | - Andrea Schaller
- Working group physical activity-related preventive research, Institute of Movement Therapy and Movement-oriented Prevention and Rehabilitation, German Sport University Cologne, Koln, Germany
| | - Daniel Lay
- Department Preventative and Rehabilitative Sports and Performance Medicine, German Sport University Cologne, Institute of Cardiology and Sports Medicine, Cologne, Germany
| | - Wilhelm Bloch
- Department Molecular and Cellular Sports Medicine, German Sport University Cologne, Institute of Cardiology and Sports Medicine, Cologne, Germany
| | - Christian Albus
- Clinic and Policlinic for Psychosomatic and Psychotherapy, University Hospital Cologne, Cologne, Germany
| | - Katja Petrowski
- Medical Psychology and Medical Sociology, University Medicine Mainz, Mainz, Germany
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12
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Bové M, Monto F, Guillem-Llobat P, Ivorra MD, Noguera MA, Zambrano A, Sirerol-Piquer MS, Requena AC, García-Alonso M, Tejerina T, Real JT, Fariñas I, D’Ocon P. NT3/TrkC Pathway Modulates the Expression of UCP-1 and Adipocyte Size in Human and Rodent Adipose Tissue. Front Endocrinol (Lausanne) 2021; 12:630097. [PMID: 33815288 PMCID: PMC8015941 DOI: 10.3389/fendo.2021.630097] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/04/2021] [Indexed: 12/11/2022] Open
Abstract
Neurotrophin-3 (NT3), through activation of its tropomyosin-related kinase receptor C (TrkC), modulates neuronal survival and neural stem cell differentiation. It is widely distributed in peripheral tissues (especially vessels and pancreas) and this ubiquitous pattern suggests a role for NT3, outside the nervous system and related to metabolic functions. The presence of the NT3/TrkC pathway in the adipose tissue (AT) has never been investigated. Present work studies in human and murine adipose tissue (AT) the presence of elements of the NT3/TrkC pathway and its role on lipolysis and adipocyte differentiation. qRT-PCR and immunoblot indicate that NT3 (encoded by NTF3) was present in human retroperitoneal AT and decreases with age. NT3 was also present in rat isolated adipocytes and retroperitoneal, interscapular, perivascular, and perirenal AT. Histological analysis evidences that NT3 was mainly present in vessels irrigating AT close associated to sympathetic fibers. Similar mRNA levels of TrkC (encoded by NTRK3) and β-adrenoceptors were found in all ATs assayed and in isolated adipocytes. NT3, through TrkC activation, exert a mild effect in lipolysis. Addition of NT3 during the differentiation process of human pre-adipocytes resulted in smaller adipocytes and increased uncoupling protein-1 (UCP-1) without changes in β-adrenoceptors. Similarly, transgenic mice with reduced expression of NT3 (Ntf3 knock-in lacZ reporter mice) or lacking endothelial NT3 expression (Ntf3flox1/flox2;Tie2-Cre+/0) displayed enlarged white and brown adipocytes and lower UCP-1 expression. Conclusions NT3, mainly released by blood vessels, activates TrkC and regulates adipocyte differentiation and browning. Disruption of NT3/TrkC signaling conducts to hypertrophied white and brown adipocytes with reduced expression of the thermogenesis marker UCP-1.
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Affiliation(s)
- María Bové
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universidad de Valencia, Valencia, Spain
| | - Fermi Monto
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universidad de Valencia, Valencia, Spain
| | - Paloma Guillem-Llobat
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universidad de Valencia, Valencia, Spain
| | - M Dolores Ivorra
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universidad de Valencia, Valencia, Spain
| | - M Antonia Noguera
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universidad de Valencia, Valencia, Spain
| | - Andrea Zambrano
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universidad de Valencia, Valencia, Spain
| | - M Salome Sirerol-Piquer
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universidad de Valencia, Valencia, Spain
- Departamento de Biología Celular, Biología Funcional y Antropología Física, Universidad de Valencia, Valencia, Spain
- CIBER en Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Ana Cristina Requena
- Departamento de Biología Celular, Biología Funcional y Antropología Física, Universidad de Valencia, Valencia, Spain
| | - Mauricio García-Alonso
- Servicio de Cirugía General y Aparato Digestivo, Hospital Clínico San Carlos, Madrid, Spain
| | - Teresa Tejerina
- Servicio de Cirugía General y Aparato Digestivo, Hospital Clínico San Carlos, Madrid, Spain
- Departamento de Farmacología, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - José T. Real
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
- Servicio de Endocrinología y Nutrición, Hospital Clínico Universitario e INCLIVA, Valencia, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad de Valencia, Valencia, Spain
| | - Isabel Fariñas
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universidad de Valencia, Valencia, Spain
- Departamento de Biología Celular, Biología Funcional y Antropología Física, Universidad de Valencia, Valencia, Spain
- CIBER en Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Pilar D’Ocon
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
- Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universidad de Valencia, Valencia, Spain
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13
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Martínez-Díaz IC, Escobar-Muñoz MC, Carrasco L. Acute Effects of High-Intensity Interval Training on Brain-Derived Neurotrophic Factor, Cortisol and Working Memory in Physical Education College Students. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17218216. [PMID: 33172145 PMCID: PMC7664431 DOI: 10.3390/ijerph17218216] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/24/2020] [Accepted: 11/03/2020] [Indexed: 12/12/2022]
Abstract
High-intensity interval training (HIIT) is considered one of the most effective methods for improving cardiorespiratory and metabolic functions. However, it is necessary to clarify their effects on neurophysiological responses and coginitive functioning. Thus, this study aimed to determine the effects of an acute bout of HIIT on neurocognitive and stress-related biomarkers and their association with working memory (WM) capacity in healthy young adults. Twenty-five male college students performed a single bout of HIIT consisting of 10 × 1 min of cycling at their VO2 peak power output. Plasma Brain-Derived Neurotrophic Factor (BDNF) and cortisol (CORT) levels, and WM (Digit Span Test (DST)), were assessed pre-, post- and 30 min post-intervention. Significant post-exercise increases in circulating BDNF and CORT levels were observed coinciding with the highest DST performance; however, no statistical associations were found between cognitive and neurophysiological variables. Moreover, DST scores obtained 30 min after exercise remained higher than those assessed at pre-exercise. In conclusion, the stress induced by a single bout of HIIT induces a remarkable response of BDNF and CORT boosting WM capacity in healthy young males. Future research should clarify the association between cognitive and neurobiological markers during intense exercise stimulation.
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Affiliation(s)
| | | | - Luis Carrasco
- Department of Physical Education and Sport, University of Seville, E-41013 Seville, Spain;
- Correspondence: ; Tel.: +34-955-420-465
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14
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Watt T, Ceballos N, Kim S, Pan X, Sharma S. The Unique Nature of Depression and Anxiety among College Students with Adverse Childhood Experiences. JOURNAL OF CHILD & ADOLESCENT TRAUMA 2020; 13:163-172. [PMID: 32549928 PMCID: PMC7289944 DOI: 10.1007/s40653-019-00270-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
It is well established that adverse childhood experiences (ACEs) contribute to the development of mental disorders in adulthood. However, less is known about how childhood trauma impacts the mind and the body, whether the resulting mental disorders have different characteristics than those occurring without these antecedent conditions, and if treatment modalities need to reflect the unique nature of mental disorders rooted in trauma. Survey and biomarker data were gathered from a sample of college students (n = 93) to explore the relationship between childhood trauma and mental health. We examine how neuroimmune systems (inflammation and neuroplasticity) relate to depression and anxiety and whether these associations vary for those with and without a history of childhood trauma. Findings reveal that students with 4 or more ACEs are more likely to have depression and anxiety than students without these experiences. In addition, we find that inflammation (CRP) and neuronal health (BDNF) are associated with mental health disorders among students with four or more ACEs, but not for students without this history. These findings suggest that mental disorders associated with four or more ACEs may be uniquely tied to physiological processes, and consequently, warrant tailored treatments. The implications for mental health intervention include, 1) screening for childhood trauma, inflammation, and neuronal health and 2) referral to treatments which are theoretically and empirically tied to the root causes of mental disorders rather than those designed merely to suppress their symptoms.
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Affiliation(s)
- Toni Watt
- Department of Sociology, Texas State University, 601 University Drive, San Marcos, TX 78666 USA
| | - Natalie Ceballos
- Department of Sociology, Texas State University, 601 University Drive, San Marcos, TX 78666 USA
| | - Seoyoun Kim
- Department of Sociology, Texas State University, 601 University Drive, San Marcos, TX 78666 USA
| | - Xi Pan
- Department of Sociology, Texas State University, 601 University Drive, San Marcos, TX 78666 USA
| | - Shobhit Sharma
- Department of Sociology, Texas State University, 601 University Drive, San Marcos, TX 78666 USA
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15
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Association of Brain-Derived Neurotrophic Factor With Cognitive Function: An Investigation of Sex Differences in Patients With Type 2 Diabetes. Psychosom Med 2020; 81:488-494. [PMID: 31083054 DOI: 10.1097/psy.0000000000000709] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Although a reduction in brain-derived neurotrophic factor (BDNF) has been implicated as a cause of cognitive impairment in type 2 diabetes mellitus (T2DM), the role of sex in moderating this effect has not been explored. METHODS We compared the difference in serum BDNF and performance on the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) between 96 men and 134 women with T2DM. We compared this with the difference in serum BDNF and performance in the control group (104 men, 144 women). RESULTS Patients with T2DM performed worse on most RBANS indices (η = 0.372, all p < .05); within T2DM patients, men performed worse than women on the delayed memory score (74.1 (12.1) versus 79.9 (11.5), p = .002) and on the total score (71.4 (11.5) versus 76.5 (10.8), p = .025). Serum BDNF was lower in patients with T2DM versus controls (7.5 (2.7) ng/ml versus 11.5 (2.7) ng/ml, p < .001), and in men compared with women (6.9 (2.4) versus 7.9 (2.8), p = .024). Serum BDNF levels positively correlated with delayed memory score in patients with T2DM (β = 0.19, p = .007). However, this association was only observed in women, not in men (pinteraction = 0.04). Among healthy controls, no sex differences were noted in either RBANS or BDNF levels (η = 0.04, Cohen's d < 0.163, all p > .05). CONCLUSIONS Our results show sex differences in poorer cognitive performance, lower BDNF concentration, and their relationship in T2DM patients, suggesting that female sex may be a protective factor for cognitive decline in T2DM patients. However, the findings should be regarded as preliminary because of the cross-sectional design and chronicity of the diabetes.
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16
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Jiang Y, Ming Q, Gao Y, Dong D, Sun X, Zhang X, Situ W, Yao S, Rao H. Effects of BDNF Val66Met polymorphisms on brain structures and behaviors in adolescents with conduct disorder. Eur Child Adolesc Psychiatry 2020; 29:479-488. [PMID: 31264106 DOI: 10.1007/s00787-019-01363-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 06/24/2019] [Indexed: 10/26/2022]
Abstract
Accumulating evidence suggests that neural abnormalities in conduct disorder (CD) may be subject to genetic influences, but few imaging studies have taken genetic variants into consideration. The Val66Met polymorphism of brain-derived neurotrophic factor (BDNF) has emerged as a high-interest genetic variant due to its importance in cortical maturation, and several studies have implicated its involvement in neurodevelopmental disorders. Thus, it is unclear how this polymorphism may influence brain anatomy and aberrant behaviors in CD. A total of 65 male adolescents with CD and 69 gender-, IQ- and socioeconomic status-matched healthy controls (HCs) (age range 13-17 years) were enrolled in this study. Analyses of variance (ANOVAs) were used to assess the main effects of CD diagnosis, BDNF genotype, and diagnosis-genotype interactions on brain anatomy and behaviors. We detected a significant main effect of BDNF genotype on temporal gyrification and antisocial behaviors, but not on CD symptoms. Diagnosis-genotype interactive effects were found for cortical thickness of the superior temporal and adjacent areas. These results suggest that the BDNF Val66Met polymorphism may exert its influence both on neural alterations and delinquent behaviors in CD patients. This initial evidence highlights the importance of elucidating potentially different pathways between BDNF genotype and cortical alterations or delinquent behaviors in CD patients.
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Affiliation(s)
- Yali Jiang
- Medical Psychological Center, The Second Xiangya Hospital, Central South University, No. 139, Middle Renmin Road, Changsha, 410011, Hunan, People's Republic of China.,Center for Studies of Psychological Application, School of Psychology, South China Normal University, Guangzhou, Guangdong, People's Republic of China
| | - Qingsen Ming
- Medical Psychological Center, The Second Xiangya Hospital, Central South University, No. 139, Middle Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Yidian Gao
- Medical Psychological Center, The Second Xiangya Hospital, Central South University, No. 139, Middle Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Daifeng Dong
- Medical Psychological Center, The Second Xiangya Hospital, Central South University, No. 139, Middle Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Xiaoqiang Sun
- Medical Psychological Center, The Second Xiangya Hospital, Central South University, No. 139, Middle Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Xiaocui Zhang
- Medical Psychological Center, The Second Xiangya Hospital, Central South University, No. 139, Middle Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Weijun Situ
- Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Shuqiao Yao
- Medical Psychological Center, The Second Xiangya Hospital, Central South University, No. 139, Middle Renmin Road, Changsha, 410011, Hunan, People's Republic of China. .,National Clinical Research Center on Psychiatry and Psychology, Changsha, Hunan, People's Republic of China. .,Medical Psychological Institute of Central South University, Changsha, Hunan, People's Republic of China.
| | - Hengyi Rao
- Center of Functional Neuroimaging, Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
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17
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Kim S, Watt T, Ceballos N, Sharma S. Adverse childhood experiences and neuroinflammatory biomarkers-The role of sex. Stress Health 2019; 35:432-440. [PMID: 31099473 DOI: 10.1002/smi.2871] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 04/12/2019] [Accepted: 05/07/2019] [Indexed: 12/20/2022]
Abstract
Despite the growing interest in adverse childhood experiences and biomarkers, less attention has been paid to multiple biomarkers as representing interrelated systems among college students. Guided by the neuroinflammatory pathway hypothesis, the current project takes the initial step in examining the link between three types of childhood adversity and biomarkers of neuroplasticity (brain-derived neurotropic factor [BDNF]) and low-grade inflammation (C-reactive protein [CRP]) in an overarching model and whether this link may differ in men and women. Undergraduate students (n = 85) were recruited through multiple departments from a state university. The participants responded to the detailed online survey questionnaire on childhood adversity and provided one blood sample via venous blood draw. Given that CRP and BDNF represent two interrelated systems, structural equation models were considered the most suitable for the analyses. The findings partially support neural and inflammatory pathways, such that childhood adversity and particularly family dysfunction have a significant positive effect on BDNF (b = 30.41, p < .01). The link between family dysfunction and CRP was stronger in female students (b = 0.57, p < .05). Results suggest that interventions for college students with family dysfunctions may need to target different physiological and behavioral outcomes for male and female students.
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Affiliation(s)
- Seoyoun Kim
- Department of Sociology, Texas State University, San Marcos, Texas
| | - Toni Watt
- Department of Sociology, Texas State University, San Marcos, Texas
| | - Natalie Ceballos
- Department of Psychology, Texas State University, San Marcos, Texas
| | - Shobhit Sharma
- Department of Biology, Texas State University, San Marcos, Texas
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Arteaga Cabeza O, Mikrogeorgiou A, Kannan S, Ferriero DM. Advanced nanotherapies to promote neuroregeneration in the injured newborn brain. Adv Drug Deliv Rev 2019; 148:19-37. [PMID: 31678359 DOI: 10.1016/j.addr.2019.10.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/19/2019] [Accepted: 10/23/2019] [Indexed: 12/16/2022]
Abstract
Neonatal brain injury affects thousands of babies each year and may lead to long-term and permanent physical and neurological problems. Currently, therapeutic hypothermia is standard clinical care for term newborns with moderate to severe neonatal encephalopathy. Nevertheless, it is not completely protective, and additional strategies to restore and promote regeneration are urgently needed. One way to ensure recovery following injury to the immature brain is to augment endogenous regenerative pathways. However, novel strategies such as stem cell therapy, gene therapies and nanotechnology have not been adequately explored in this unique age group. In this perspective review, we describe current efforts that promote neuroprotection and potential targets that are unique to the developing brain, which can be leveraged to facilitate neuroregeneration.
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19
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Xia H, Du X, Yin G, Zhang Y, Li X, Cai J, Huang X, Ning Y, Soares JC, Wu F, Zhang XY. Effects of smoking on cognition and BDNF levels in a male Chinese population: relationship with BDNF Val66Met polymorphism. Sci Rep 2019; 9:217. [PMID: 30659208 PMCID: PMC6338731 DOI: 10.1038/s41598-018-36419-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 11/14/2018] [Indexed: 01/17/2023] Open
Abstract
Recent studies demonstrate that brain-derived neurotrophic factor (BDNF) might be associated with nicotine addiction, and circulating BDNF is a biomarker of memory and general cognitive function. Moreover, studies suggest that a functional polymorphism of the BDNF Val66Met may mediate hippocampal-dependent cognitive functions. We aimed to explore the relationships between smoking, cognitive performance and BDNF in a normal Chinese Han population. We recruited 628 male healthy subjects, inducing 322 smokers and 306 nonsmokers, and genotyped them the BDNF Val66Met polymorphism. Of these, we assessed 114 smokers and 98 nonsmokers on the repeatable battery for the assessment of neuropsychological status (RBANS), and 103 smokers and 89 nonsmokers on serum BDNF levels. Smokers scored lower than the nonsmokers on RBANS total score (p = 0.002), immediate memory (p = 0.003) and delayed memory (p = 0.021). BDNF levels among the smokers who were Val allele carriers were correlated with the degree of cognitive impairments, especially attention, as well as with the carbon monoxide concentrations. Our findings suggest that smoking is associated with cognitive impairment in a male Chinese Han population. The association between higher BDNF levels and cognitive impairment, mainly attention in smokers appears to be dependent on the BDNF Val66Met polymorphism.
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Affiliation(s)
- Haisen Xia
- Hefei Fourth People's Hospital, Anhui Mental Health Center, Hefei, China
| | - Xiangdong Du
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Jiangsu, China
| | - Guangzhong Yin
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Jiangsu, China
| | - Yingyang Zhang
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Jiangsu, China
| | - Xiaosi Li
- Hefei Fourth People's Hospital, Anhui Mental Health Center, Hefei, China
| | - Junyi Cai
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China
| | - Xingbing Huang
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China
| | - Yuping Ning
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Fengchun Wu
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China.
| | - Xiang Yang Zhang
- Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
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20
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Asadi-Golshan R, Razban V, Mirzaei E, Rahmanian A, Khajeh S, Mostafavi-Pour Z, Dehghani F. Sensory and Motor Behavior Evidences Supporting the Usefulness of Conditioned Medium from Dental Pulp-Derived Stem Cells in Spinal Cord Injury in Rats. Asian Spine J 2018; 12:785-793. [PMID: 30213159 PMCID: PMC6147871 DOI: 10.31616/asj.2018.12.5.785] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 04/17/2018] [Indexed: 12/29/2022] Open
Abstract
Study Design Experimental animal study. Purpose This study aimed to assess effects of conditioned medium (CM) of dental pulp-derived stem cells loaded in collagen hydrogel on functional recovery following spinal cord injury (SCI). Overview of Literature SCI affects sensory and motor functions, and behavioral recovery is the most essential purpose of therapeutic intervention. Recent studies have reported that CM from dental pulp-derived stem cells has therapeutic benefits. In addition, collagen hydrogel acts as a drug delivery system in SCI experiments. Methods Stem cells from human exfoliated deciduous teeth (SHEDs) were cultured, and SHED-CM was harvested and concentrated. Collagen hydrogel containing SHED-CM was prepared. The rats were divided into five groups receiving laminectomy, compressive SCI with or without intraspinal injection of biomaterials (SHED-CM), and collagen hydrogel with or without SHED-CM. Basso, Beattie, and Bresnahan (BBB) scoring, inclined plane, cold allodynia, and beam walk tests were performed for 6 weeks to assess locomotor, motor, sensory, and sensory-motor performances, respectively. Results Scores of the rats receiving SHED-CM loaded in collagen hydrogel were significantly better than those of the other injured groups at 1-week post-injury for BBB, 2 weeks for inclined plane, 2 weeks for cold allodynia, and 4 weeks for beam walk tests (p <0.05). The differences remained significant throughout the study. Conclusions Intraspinal administration of SHED-CM loaded in collagen hydrogel leads to improved functional recovery and proposes a cell-free therapeutic approach for SCI.
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Affiliation(s)
- Reza Asadi-Golshan
- Department of Anatomy, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Histomorphometry and Stereology Research Centre, Shiraz University of Medical Sciences, Shiraz, Iran.,Cellular and Molecular Medicine Student Research Group, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
| | - Vahid Razban
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Esmaeil Mirzaei
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Sahar Khajeh
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zohreh Mostafavi-Pour
- Recombinant Protein Laboratory, Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farzaneh Dehghani
- Department of Anatomy, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Histomorphometry and Stereology Research Centre, Shiraz University of Medical Sciences, Shiraz, Iran
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21
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Man L, Lv X, Du XD, Yin G, Zhu X, Zhang Y, Soares JC, Yang XN, Chen X, Zhang XY. Cognitive impairments and low BDNF serum levels in first-episode drug-naive patients with schizophrenia. Psychiatry Res 2018; 263:1-6. [PMID: 29482040 DOI: 10.1016/j.psychres.2018.02.034] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/24/2018] [Accepted: 02/14/2018] [Indexed: 12/12/2022]
Abstract
Evidence shows that BDNF may regulate activity-dependent forms of synaptic plasticity underlying learning and memory. Previous studies reported low BDNF levels and cognitive impairment in the early stage of schizophrenia. Our current study aimed to explore the association between serum BDNF and cognitive functions in first-episode drug-naïve (FEDN) patients with schizophrenia, which has been under-investigated. We recruited 80 FEDN patients and 80 healthy controls and examined the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and serum BDNF in both groups. Patient psychopathology was assessed using the Positive and Negative Syndrome Scale (PANSS). BDNF levels were significantly lower in patients compared to controls (p < 0.001). The RBANS total score and nearly all indexes (all p < 0.001) except for visuospatial/constructional index (p > 0.05) were significantly lower in patients than controls. No significant correlation was found between BDNF and any index or total scores of RBANS in either patients or healthy controls (all p > 0.05). However, the PANSS negative subscale score were negatively associated with both the immediate memory and language indexes (both p < 0.005). Our findings suggest that excessive cognitive impairments are present in the early stage of schizophrenia. Low BDNF may contribute to the pathogenesis of schizophrenia, but maybe not to its cognitive impairments.
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Affiliation(s)
- Lijuan Man
- The First Affiliated Hospital, Wenzhou Medical College, Wenzhou, China
| | - Xiaoli Lv
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Xiang-Dong Du
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Guangzhong Yin
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Xiaomin Zhu
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Yingyang Zhang
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, 1941 East Road, Houston, TX, USA
| | - Xu-Na Yang
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China.
| | - Xingshi Chen
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, 286 Guangji Rd 21500, Suzhou Shi 215008, Jiangsu Province, China.
| | - Xiang Yang Zhang
- The First Affiliated Hospital, Wenzhou Medical College, Wenzhou, China; Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, 1941 East Road, Houston, TX, USA.
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Maserati M, Alexander SA. Genetics and Genomics of Acute Neurologic Disorders. AACN Adv Crit Care 2018; 29:57-75. [PMID: 29496714 DOI: 10.4037/aacnacc2018566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Neurologic diseases and injuries are complex and multifactorial, making risk prediction, targeted treatment modalities, and outcome prognostication difficult and elusive. Genetics and genomics have affected clinical practice in many aspects in medicine, particularly cancer treatment. Advancements in knowledge of genetic and genomic variability in neurologic disease and injury are growing rapidly. Although these data are not yet ready for use in clinical practice, research continues to progress and elucidate information that eventually will provide answers to complex neurologic questions and serve as a platform to provide individualized care plans aimed at improving outcomes. This article provides a focused review of relevant literature on genetics, genomics, and common complex neurologic disease and injury likely to be seen in the acute care setting.
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Affiliation(s)
- Megan Maserati
- Megan Maserati is a PhD student at University of Pittsburgh, Pittsburgh, Pennsylvania. Sheila A. Alexander is Associate Professor, University of Pittsburgh, 336 Victoria Building, 3500 Victoria Street, Pittsburgh, PA 15261
| | - Sheila A Alexander
- Megan Maserati is a PhD student at University of Pittsburgh, Pittsburgh, Pennsylvania. Sheila A. Alexander is Associate Professor, University of Pittsburgh, 336 Victoria Building, 3500 Victoria Street, Pittsburgh, PA 15261
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Chew JD, Markham L, Smith HM, Su YR, Tomasek K, Slaughter JC, Sawyer D, Soslow JH. Assessment of brain-derived neurotrophic factor and osteopontin in a healthy pediatric population. J Circ Biomark 2018; 7:1849454418806136. [PMID: 30364485 PMCID: PMC6196610 DOI: 10.1177/1849454418806136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 09/10/2018] [Indexed: 01/16/2023] Open
Abstract
Biomarkers are routinely used for noninvasive identification or monitoring of disease processes in clinical practice, as well as surrogate end points for drug development. There is a significant lack of data regarding biomarkers in children. An understanding of biomarker levels in a healthy pediatric cohort is essential as more studies begin to apply noninvasive biomarkers to pediatric populations. Brain-derived neurotrophic factor (BDNF) functions in neuronal survival and plasticity and is associated with exercise capacity and inflammatory disease processes. Osteopontin (OPN) plays a regulatory role in inflammation and may be a clinically useful biomarker of cardiovascular disease processes, ventricular remodeling, and skeletal muscle regeneration. This study describes our initial experience with a cohort of healthy pediatric patients and seeks to provide normal values of BDNF and OPN with correlation to age, gender, and cardiovascular and fitness measures. Serum BDNF and plasma OPN were measured using enzyme-linked immunosorbent assay in 33 healthy pediatric subjects. Subjects underwent complete cardiac evaluation, including echocardiography, exercise stress testing, and health risk assessment. The 5th-95th percentile was 5.63-37.86 ng/ml for serum BDNF and 4.9-164.9 ng/ml for plasma OPN. Plasma OPN correlated with number of days of exercise per week (r = 0.46, p = 0.008). No other correlations were significant. This study provides the initial data on serum BDNF and plasma OPN in children and begins to explore the relationships of BDNF and OPN to cardiovascular health and fitness in the pediatric population.
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Affiliation(s)
- Joshua D Chew
- Thomas P. Graham Division of Pediatric Cardiology, Department of Pediatrics,
Vanderbilt University Medical Center, Nashville, TN, USA
| | - Larry Markham
- Thomas P. Graham Division of Pediatric Cardiology, Department of Pediatrics,
Vanderbilt University Medical Center, Nashville, TN, USA
| | - Holly M Smith
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt
University Medical Center, Nashville, TN, USA
| | - Yan Ru Su
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt
University Medical Center, Nashville, TN, USA
| | - Kelsey Tomasek
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt
University Medical Center, Nashville, TN, USA
| | - James C Slaughter
- Department of Biostatistics, Vanderbilt University Medical Center,
Nashville, TN, USA
| | - Douglas Sawyer
- Division of Cardiovascular Services, Maine Medical Center, Portland, ME,
USA
| | - Jonathan H Soslow
- Thomas P. Graham Division of Pediatric Cardiology, Department of Pediatrics,
Vanderbilt University Medical Center, Nashville, TN, USA
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Pereira LP, Köhler CA, de Sousa RT, Solmi M, de Freitas BP, Fornaro M, Machado-Vieira R, Miskowiak KW, Vieta E, Veronese N, Stubbs B, Carvalho AF. The relationship between genetic risk variants with brain structure and function in bipolar disorder: A systematic review of genetic-neuroimaging studies. Neurosci Biobehav Rev 2017; 79:87-109. [DOI: 10.1016/j.neubiorev.2017.05.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 04/27/2017] [Accepted: 05/01/2017] [Indexed: 12/21/2022]
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Yulug B, Hanoglu L, Kilic E. The neuroprotective effect of focused ultrasound: New perspectives on an old tool. Brain Res Bull 2017; 131:199-206. [PMID: 28458041 DOI: 10.1016/j.brainresbull.2017.04.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 04/24/2017] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Transcranial focused ultrasound (tFUS) is a novel technique that can noninvasively modulate the cortical function. Moreover, there are rapidly replicating evidence suggesting the role of tFUS for targeted neuroprotective drug delivery by increasing the permeability of the central nervous system barrier that results with increased neuroprotective activity. In contrast to the indirect neuroprotective effect, there is rare evidence suggesting the direct parenchymal neuroprotective effect of transcranial focused ultrasound (tFUS). In the light of these findings, we aimed to review the direct and indirect neuroprotective effect of FUS in various animal models of Stroke, Parkinson's Disease, Alzheimer's Disease and Major Depressive Disorder. METHODS A literary search was conducted, utilizing search terms "animal", "focused ultrasound", "neuroprotection", "Alzheimer's Disease", "Parkinson's Disease ", "Stroke", "Neurodegenerative disease" and "Major Depressive Disorder". Items were excluded if they failed to: (1) include patients, (2) editorials, and letters. RESULTS This mini-review article presents an up-to-date review of the neuroprotective effects of tFUS in animal studies and suggests the dual neurotherapeutic role of tFUS in various neurodegenerative diseases. CONCLUSION Future well-conducted human studies are emergently needed to assess the neuroprotective effects of FUS.
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Affiliation(s)
- Burak Yulug
- Department of Neurology, University of Istanbul-Medipol, Istanbul, Turkey; Regenerative and Restorative Medical Research Center, Experimental Neurology Laboratuary, University of Istanbul-Medipol, Istanbul, Turkey; Department of Physiology, University of Istanbul-Medipol, Istanbul, Turkey.
| | - Lutfu Hanoglu
- Department of Neurology, University of Istanbul-Medipol, Istanbul, Turkey; Regenerative and Restorative Medical Research Center, Experimental Neurology Laboratuary, University of Istanbul-Medipol, Istanbul, Turkey; Department of Physiology, University of Istanbul-Medipol, Istanbul, Turkey
| | - Ertugrul Kilic
- Regenerative and Restorative Medical Research Center, Experimental Neurology Laboratuary, University of Istanbul-Medipol, Istanbul, Turkey; Department of Physiology, University of Istanbul-Medipol, Istanbul, Turkey
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Diaz J, Abiola S, Kim N, Avaritt O, Flock D, Yu J, Northington FJ, Chavez-Valdez R. Therapeutic Hypothermia Provides Variable Protection against Behavioral Deficits after Neonatal Hypoxia-Ischemia: A Potential Role for Brain-Derived Neurotrophic Factor. Dev Neurosci 2017; 39:257-272. [PMID: 28196356 DOI: 10.1159/000454949] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 12/05/2016] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Despite treatment with therapeutic hypothermia (TH), infants who survive hypoxic ischemic (HI) encephalopathy (HIE) have persistent neurological abnormalities at school age. Protection by TH against HI brain injury is variable in both humans and animal models. Our current preclinical model of hypoxia-ischemia (HI) and TH displays this variability of outcomes in neuropathological and neuroimaging end points with some sexual dimorphism. The detailed behavioral phenotype of this model is unknown. Whether there is sexual dimorphism in certain behavioral domains is also not known. Brain-derived neurotrophic factor (BDNF) supports neuronal cell survival and repair but may also be a marker of injury. Here, we characterize the behavioral deficits after HI and TH stratified by sex, as well as late changes in BDNF and its correlation with memory impairment. METHODS HI was induced in C57BL6 mice on postnatal day 10 (p10) (modified Vannucci model). Mice were randomized to TH (31°C) or normothermia (NT, 36°C) for 4 h after HI. Controls were anesthesia-exposed, age- and sex-matched littermates. Between p16 and p39, growth was followed, and behavioral testing was performed including reflexes (air righting, forelimb grasp and negative geotaxis) and sensorimotor, learning, and memory skills (open field, balance beam, adhesive removal, Y-maze tests, and object location task [OLT]). Correlations between mature BDNF levels in the forebrain and p42 memory outcomes were studied. RESULTS Both male and female HI mice had an approximately 8-12% lower growth rate (g/day) than shams (p ≤ 0.01) by p39. TH ameliorated this growth failure in females but not in males. In female mice, HI injury prolonged the time spent at the periphery (open field) at p36 (p = 0.004), regardless of treatment. TH prevented motor impairments in the balance beam and adhesive removal tests in male and female mice, respectively (p ≤ 0.05). Male and female HI mice visited the new arm of the Y-maze 12.5% (p = 0.05) and 10% (p = 0.03) less often than shams, respectively. Male HI mice also had 35% lower exploratory preference score than sham (p ≤ 0.001) in the OLT. TH did not prevent memory impairments found with Y-maze testing or OLT in either sex (p ≤ 0.01) at p26. At p42, BDNF levels in the forebrain ipsilateral to the HI insult were 1.7- to 2-fold higher than BDNF levels in the sham forebrain, and TH did not prevent this increase. Higher BDNF levels in the forebrain ipsilateral to the insult correlated with worse performance in the Y-maze in both sexes and in OLT in male mice (p = 0.01). CONCLUSIONS TH provides benefit in specific domains of behavior following neonatal HI. In general, these benefits accrued to both males and females, but not in all areas. In some domains, such as memory, no benefit of TH was found. Late differences in individual BDNF levels may explain some of these findings.
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Affiliation(s)
- Johana Diaz
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD, USA
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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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Borba EM, Duarte JA, Bristot G, Scotton E, Camozzato AL, Chaves MLF. Brain-Derived Neurotrophic Factor Serum Levels and Hippocampal Volume in Mild Cognitive Impairment and Dementia due to Alzheimer Disease. Dement Geriatr Cogn Dis Extra 2016; 6:559-567. [PMID: 28101102 PMCID: PMC5216193 DOI: 10.1159/000450601] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Background/Aims Hippocampal atrophy is a recognized biomarker of Alzheimer disease (AD) pathology. Serum brain-derived neurotrophic factor (BDNF) reduction has been associated with neurodegeneration. We aimed to evaluate BDNF serum levels and hippocampal volume in clinical AD (dementia and mild cognitive impairment [MCI]). Methods Participants were 10 patients with MCI and 13 with dementia due to AD as well as 10 healthy controls. BDNF serum levels were determined by ELISA and volumetric measures with NeuroQuant®. Results MCI and dementia patients presented lower BDNF serum levels than healthy participants; dementia patients presented a smaller hippocampal volume than MCI patients and healthy participants. Discussion The findings support that the decrease in BDNF might start before the establishment of neuronal injury expressed by the hippocampal reduction.
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Affiliation(s)
- Ericksen Mielle Borba
- Dementia Clinic, Neurology Service, Porto Alegre, Brazil; Postgraduate Program in Medical Sciences, School of Medicine, Porto Alegre, Brazil
| | - Juliana Avila Duarte
- Radiology Service, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil
| | - Giovana Bristot
- Bipolar Disorder Program, Laboratory of Molecular Psychiatry, Porto Alegre, Brazil
| | - Ellen Scotton
- Bipolar Disorder Program, Laboratory of Molecular Psychiatry, Porto Alegre, Brazil
| | | | - Márcia Lorena Fagundes Chaves
- Dementia Clinic, Neurology Service, Porto Alegre, Brazil; Internal Medicine Department, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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Electroacupuncture Ameliorates Learning and Memory and Improves Synaptic Plasticity via Activation of the PKA/CREB Signaling Pathway in Cerebral Hypoperfusion. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:7893710. [PMID: 27829866 PMCID: PMC5088321 DOI: 10.1155/2016/7893710] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 09/18/2016] [Indexed: 12/19/2022]
Abstract
Electroacupuncture (EA) has shown protective effects on cognitive decline. However, the underlying molecular mechanisms are ill-understood. The present study was undertaken to determine whether the cognitive function was ameliorated in cerebral hypoperfusion rats following EA and to investigate the role of PKA/CREB pathway. We used a rat 2-vessel occlusion (2VO) model and delivered EA at Baihui (GV20) and Dazhui (GV14) acupoints. Morris water maze (MWM) task, electrophysiological recording, Golgi silver stain, Nissl stain, Western blot, and real-time PCR were employed. EA significantly (1) ameliorated the spatial learning and memory deficits, (2) alleviated long-term potentiation (LTP) impairment and the reduction of dendritic spine density, (3) suppressed the decline of phospho-CREB (pCREB) protein, brain-derived neurotrophic factor (BDNF) protein, and microRNA132 (miR132), and (4) reduced the increase of p250GAP protein of 2VO rats. These changes were partially blocked by a selective protein kinase A (PKA) inhibitor, N-[2-(p-bromocinnamylamino)ethyl]-5-isoquinoline-sulfonamide (H89), suggesting that the PKA/CREB pathway is potentially involved in the effects of EA. Moreover, any significant damage to the pyramidal cell layer of CA1 subregion was absent. These results demonstrated that EA could ameliorate learning and memory deficits and alleviate hippocampal synaptic plasticity impairment of cerebral hypoperfusion rats, potentially mediated by PKA/CREB signaling pathway.
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Lack of an association of BDNF Val66Met polymorphism and plasma BDNF with hippocampal volume and memory. COGNITIVE AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2016; 15:625-43. [PMID: 25784293 DOI: 10.3758/s13415-015-0343-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) has been shown to be important for neuronal survival and synaptic plasticity in the hippocampus in nonhuman animals. The Val66Met polymorphism in the BDNF gene, involving a valine (Val) to methionine (Met) substitution at codon 66, has been associated with lower BDNF secretion in vitro. However, there have been mixed results regarding associations between either circulating BDNF or the BDNF Val66Met polymorphism with hippocampal volume and memory in humans. The current study examined the association of BDNF genotype and plasma BDNF with hippocampal volume and memory in two large independent cohorts of middle-aged and older adults (both cognitively normal and early-stage dementia). Sample sizes ranged from 123 to 649. Measures of the BDNF genotype, plasma BDNF, MRI-based hippocampal volume, and memory performance were obtained from the Knight Alzheimer Disease Research Center (ADRC) and the Alzheimer's Disease Neuroimaging Initiative (ADNI). There were no significant differences between BDNF Met+ and Met- groups on either hippocampal volume or memory in either cohort. In addition, plasma BDNF was not significantly associated with either hippocampal volume or memory in either cohort. Neither age, cognitive status, nor gender moderated any of the relationships. Overall, current findings suggest that BDNF genotype and plasma BDNF may not be robust predictors for variance in hippocampal volume and memory in middle age and older adult cohorts.
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Ceballos N, Sharma S. Risk and Resilience: The Role of Brain-derived Neurotrophic Factor in Alcohol Use Disorder. AIMS Neurosci 2016. [DOI: 10.3934/neuroscience.2016.4.398] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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Mashayekhi F, Salehi Z, Jamalzadeh HR. Quantitative Analysis of Cerebrospinal Fluid Brain Derived Neurotrophic Factor in the Patients with Multiple Sclerosis. ACTA MEDICA (HRADEC KRÁLOVÉ) 2015; 55:83-6. [DOI: 10.14712/18059694.2015.60] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Multiple sclerosis (MS) is the most common cause of nontraumatic neurological disability in Europe and North America. Growth factor expression could participate in the repair process of the demyelinating disease. Among growth factors, brain derived neurotrophic factors (BDNF) has been demonstrated to play an important role in neuronal and axonal survival. In the central nervous system (CNS), neurons are the main source of BDNF. Another potential source are activated astrocytes, which are present in inflamed areas in the CNS as shown in MS. In this study, total protein concentration (TPC) and BDNF levels in the cerebrospinal fluid (CSF) samples from the patients with MS (n = 48) and control subjects (n = 53) were measured using a Bio-Rad protein assay and enzyme linked immunosorbent assay (ELISA). No significant change in the CSF TPC of patients with MS was seen as compared to normal CSF. The presence of BDNF in the CSF samples was shown by Western blot. Using ELISA, it was shown that the level of BDNF in the MS CSF is higher than in normal CSF. It is concluded that BDNF is a constant component of human CSF. Moreover, it could be implicated in the pathophysiology of MS.
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Conditioned medium from the stem cells of human dental pulp improves cognitive function in a mouse model of Alzheimer's disease. Behav Brain Res 2015. [PMID: 26210934 DOI: 10.1016/j.bbr.2015.07.043] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is a progressive, neurodegenerative disease characterized by a decline in cognitive abilities and the appearance of β-amyloid plaques in the brain. Although the pathogenic mechanisms associated with AD are not fully understood, activated microglia releasing various neurotoxic factors, including pro-inflammatory cytokines and oxidative stress mediators, appear to play major roles. Here, we investigated the therapeutic benefits of a serum-free conditioned medium (CM) derived from the stem cells of human exfoliated deciduous teeth (SHEDs) in a mouse model of AD. The intranasal administration of SHEDs in these mice resulted in substantially improved cognitive function. SHED-CM contained factors involved in multiple neuroregenerative mechanisms, such as neuroprotection, axonal elongation, neurotransmission, the suppression of inflammation, and microglial regulation. Notably, SHED-CM attenuated the pro-inflammatory responses induced by β-amyloid plaques, and generated an anti-inflammatory/tissue-regenerating environment, which was accompanied by the induction of anti-inflammatory M2-like microglia. Our data suggest that SHED-CM may provide significant therapeutic benefits for AD.
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Liang G, Qin H, Zhang L, Ma S, Huang X, Lv Y, Qing L, Li Q, Xiong Y, Huang Y, Chen K, Huang Y, Shen Y, Nong J, Yang X, Zou Y. Effects of chronic manganese exposure on the learning and memory of rats by observing the changes in the hippocampal cAMP signaling pathway. Food Chem Toxicol 2015; 83:261-7. [PMID: 26164403 DOI: 10.1016/j.fct.2015.07.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 06/16/2015] [Accepted: 07/06/2015] [Indexed: 01/10/2023]
Abstract
Chronic manganese exposure can produce cognitive deficits; however, the underlying mechanism remains unclear; reliable peripheral biomarker of Mn neurotoxicity have not yet been fully developed. Hence, this study aimed to investigate the mechanism of Mn-induced cognitive deficits and the potential biomarker of Mn neurotoxicity in rats. Thirty-two male Sprague Dawley rats were divided into four groups; these groups received intraperitoneal injections of 0, 5, 10 and 20 mg Mn/kg once daily, five days/week for 18 weeks. Learning and memory were assessed via Morris water maze test. Hippocampal and plasma Mn concentrations were measured through graphite furnace atomic absorption spectrometry. The levels of plasma BDNF, hippocampal BDNF, cAMP, protein kinase A, and pCREB were assessed through ELISA or Western blot. Results showed that the Mn concentrations in the hippocampus and plasma of the Mn-treated rats were higher than those of the control rats. Mn exposure impaired the learning and memory of rats. Plasma BDNF levels and hippocampal BDNF, cAMP, protein kinase A, and pCREB levels were significantly lower in the Mn-treated rats than in the control rats. Plasma BDNF levels were negatively correlated with the escape latency and the hippocampal and plasma Mn concentrations. By contrast, plasma BDNF levels were positively correlated with the number of platform crossings and the hippocampal cAMP and BDNF levels. Therefore, Mn impaired learning and memory probably by inhibiting the hippocampal cAMP signaling pathway in rats. Plasma BDNF levels may also be a potential effect biomarker of Mn neurotoxicity.
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Affiliation(s)
- Guiqiang Liang
- Teaching and Research Section of Hygienic Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Huiyan Qin
- Guangxi Center for Disease Prevention and Control, Nanning, Guangxi, PR China
| | - Li'e Zhang
- Teaching and Research Section of Hygienic Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Shuyan Ma
- Teaching and Research Section of Hygienic Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Xiaowei Huang
- Teaching and Research Section of Hygienic Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Yingnan Lv
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Li Qing
- Teaching and Research Section of Hygienic Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Qin Li
- Teaching and Research Section of Hygienic Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Yuxia Xiong
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Yifei Huang
- Department of Neurology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, PR China
| | - Kangcheng Chen
- Guangxi Center for Disease Prevention and Control, Nanning, Guangxi, PR China
| | - Yuman Huang
- Guangxi Center for Disease Prevention and Control, Nanning, Guangxi, PR China
| | - Yuefei Shen
- Department of Neurology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, PR China
| | - Jie Nong
- Teaching and Research Section of Hygienic Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Xiaobo Yang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China.
| | - Yunfeng Zou
- Teaching and Research Section of Hygienic Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China.
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Wu JQ, Chen DC, Tan YL, Tan SP, Hui L, Lv MH, Soares JC, Zhang XY. Altered BDNF is correlated to cognition impairment in schizophrenia patients with tardive dyskinesia. Psychopharmacology (Berl) 2015; 232:223-32. [PMID: 24994553 DOI: 10.1007/s00213-014-3660-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 06/03/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND Long-term antipsychotic treatment for schizophrenia is often associated with the emergence of tardive dyskinesia (TD), which is linked to greater cognitive impairment. Brain-derived neurotrophic factor (BDNF) plays a critical role in cognitive function, and schizophrenia patients with TD have lower BDNF levels than those without TD. OBJECTIVE This study examines the BDNF levels, the cognitive function, and the association of BDNF with cognitive function in schizophrenia patients with or without TD. METHODS We recruited 83 male chronic patients with (n=35) and without TD (n=48) meeting DSM-IV criteria for schizophrenia and 52 male control subjects. We examined the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and BDNF levels for all subjects. Positive and Negative Symptom Scale (PANSS) and the Abnormal Involuntary Movement Scale (AIMS) were assessed in patients. RESULTS BDNF levels were lower in patients with than those without TD (p<0.05). RBANS total score (p<0.01) and subscales of immediate memory, visuospatial/constructional performance, and attention were lower in patients with than those without TD (all p<0.05). BDNF levels were positively associated with immediate memory in patients without TD, but negatively in TD patients (both p<0.05). Multiple regression analysis confirmed that in either TD or non-TD group, BDNF was an independent contributor to immediate memory (both p<0.05). CONCLUSIONS BDNF may be involved in the pathophysiology of TD. While the associations between BDNF and cognition in both TD and non-TD patients suggest a close relationship between BDNF and cognition, the different directions may implicate distinct mechanisms between TD and non-TD patients.
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Affiliation(s)
- Jing Qin Wu
- School of Biomedical Sciences and Pharmacy, Faculty of Health, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia
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McAllister TW. Genetic factors in traumatic brain injury. HANDBOOK OF CLINICAL NEUROLOGY 2015; 128:723-39. [DOI: 10.1016/b978-0-444-63521-1.00045-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Zhang XY, Chen DC, Tan YL, Tan SP, Wang ZR, Yang FD, Xiu MH, Hui L, Lv MH, Zunta-Soares GB, Soares JC. Gender difference in association of cognition with BDNF in chronic schizophrenia. Psychoneuroendocrinology 2014; 48:136-46. [PMID: 24999831 DOI: 10.1016/j.psyneuen.2014.06.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 06/09/2014] [Accepted: 06/09/2014] [Indexed: 01/06/2023]
Abstract
While numerous studies have reported that brain-derived neurotrophic factor (BDNF) may be involved in the pathophysiology of schizophrenia, very few studies have explored its association with cognitive impairment or gender differences in schizophrenia which we explored. We compared gender differences in 248 chronic schizophrenic patients (male/female=185/63) to 188 healthy controls (male/female=98/90) on the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and serum BDNF. Schizophrenic symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS). Our results showed that schizophrenic patients performed worse than normals on most of the cognitive tasks, and male patients had significantly lower immediate memory and delayed memory scores than female patients. BDNF levels were significantly lower in patients than controls, and male patients had significantly lower BDNF levels than female patients. For the patients, BDNF was positively associated with immediate memory and the RBANS total score. Furthermore, these associations were only observed in female not male patients. Among healthy controls, no gender difference was observed in cognitive domains and BDNF levels, or in the association between BDNF and cognition. Our results suggest gender differences in cognitive impairments, BDNF levels and their association in chronic patients with schizophrenia. However, the findings should be regarded as preliminary due to the cross-sectional design and our chronic patients, which need replication in a first-episode and drug naïve patients using a longitudinal study.
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Affiliation(s)
- Xiang Yang Zhang
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA; Beijing HuiLongGuan Hospital, Peking University, Beijing, China.
| | - Da-Chun Chen
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Yun-Long Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Shu-Ping Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Zhi-Ren Wang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Fu-De Yang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Mei-Hong Xiu
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Li Hui
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Meng-Han Lv
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Giovana B Zunta-Soares
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA.
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Dale EA, Ben Mabrouk F, Mitchell GS. Unexpected benefits of intermittent hypoxia: enhanced respiratory and nonrespiratory motor function. Physiology (Bethesda) 2014; 29:39-48. [PMID: 24382870 DOI: 10.1152/physiol.00012.2013] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Intermittent hypoxia (IH) is most often thought of for its role in morbidity associated with sleep-disordered breathing, including central nervous system pathology. However, recent evidence suggests that the nervous system fights back in an attempt to minimize pathology by increasing the expression of growth/trophic factors that confer neuroprotection and neuroplasticity. For example, even modest ("low dose") IH elicits respiratory motor plasticity, increasing the strength of respiratory contractions and breathing. These low IH doses upregulate hypoxia-sensitive growth/trophic factors within respiratory motoneurons but do not elicit detectable pathologies such as hippocampal cell death, neuroinflammation, or systemic hypertension. Recent advances have been made toward understanding cellular mechanisms giving rise to IH-induced respiratory plasticity, and attempts have been made to harness the benefits of low-dose IH to treat respiratory insufficiency after cervical spinal injury. Our recent realization that IH also upregulates growth/trophic factors in nonrespiratory motoneurons and improves limb (or leg) function after incomplete chronic spinal injuries suggests that IH-induced plasticity is a general feature of motor systems. Collectively, available evidence suggests that low-dose IH may represent a safe and effective treatment to restore lost motor function in diverse clinical disorders that impair motor function.
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Affiliation(s)
- E A Dale
- Department of Comparative Biosciences, University of Wisconsin, Madison, Wisconsin
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Frodl T, Skokauskas N, Frey EM, Morris D, Gill M, Carballedo A. BDNF Val66Met genotype interacts with childhood adversity and influences the formation of hippocampal subfields. Hum Brain Mapp 2014; 35:5776-83. [PMID: 25044977 DOI: 10.1002/hbm.22584] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 06/05/2014] [Accepted: 07/02/2014] [Indexed: 01/22/2023] Open
Abstract
Childhood stress and genetic factors like the Val66MET polymorphism of the brain derived neurotrophic factor (BDNF) gene are associated with a higher risk for developing major depressive disorder (MDD) and might also influence hippocampal changes. The aim of this study was to determine which hippocampal dentate gyrus and cornu ammonis subfields are altered in MDD compared to healthy controls and which subfields are affected by the BDNF Val66Met polymorphism and child adversity. Adult patients with MDD and healthy matched controls underwent high-resolution magnetic resonance imaging. Automatic segmentation using the programme FreeSurfer was used to segment the hippocampal subfields dentate gyrus (DG/CA4), CA1 and CA2/3. The history of possible childhood adversity was assessed using the Childhood Trauma Questionnaire and the Val66Met BDNF SNP (rs6265) genotypes were obtained. Patients with MDD had significantly smaller CA4/DG and CA2/3 volumes compared to healthy controls. Furthermore, there was a significant interactive effect of BDNF allele and childhood adversity on CA2/3 and CA4/DG volumes. Met allele carriers without childhood adversity had larger and with childhood adversity smaller CA4/DG and CA2/3 volumes than Val-allele homozygotes. Our results highlight stress by gene interactions as relevant for hippocampal volume reductions, in particular for the subfield CA2/3 and dentate gyrus.
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Affiliation(s)
- Thomas Frodl
- Department of Psychiatry and Institute of Neuroscience, University of Dublin, Trinity College Dublin, Dublin, Ireland; Centre of Advanced Medical Imaging, St. James's Hospital & Trinity College Dublin, Dublin, Ireland; Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
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Harrisberger F, Spalek K, Smieskova R, Schmidt A, Coynel D, Milnik A, Fastenrath M, Freytag V, Gschwind L, Walter A, Vogel T, Bendfeldt K, de Quervain DJF, Papassotiropoulos A, Borgwardt S. The association of the BDNF Val66Met polymorphism and the hippocampal volumes in healthy humans: a joint meta-analysis of published and new data. Neurosci Biobehav Rev 2014; 42:267-78. [PMID: 24674929 DOI: 10.1016/j.neubiorev.2014.03.011] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 02/17/2014] [Accepted: 03/16/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND The brain-derived neurotrophic factor (BDNF) Val66Met polymorphism (refSNP Cluster Report: rs6265) is a common and functionally relevant single nucleotide polymorphism (SNP). The gene itself, as well as the SNP rs6265, have been implicated in hippocampal learning and memory. However, imaging genetic studies have produced controversial results about the impact of this SNP on hippocampal volumes in healthy subjects. METHODS We examined the association between the rs6265 polymorphism and hippocampal volume in 643 healthy young subjects using automatic segmentation and subsequently included these data in a meta-analysis based on published studies with 5298 healthy subjects in total. RESULTS We found no significant association between SNP rs6265 and hippocampal volumes in our sample (g=0.05, p=0.58). The meta-analysis revealed a small, albeit significant difference in hippocampal volumes between genotype groups, such that Met-carriers had slightly smaller hippocampal volumes than Val/Val homozygotes (g=0.09, p=0.04), an association that was only evident when manual (g=0.22, p=0.01) but not automatic tracing approaches (g=0.04, p=0.38) were used. Studies using manual tracing showed evidence for publication bias and a significant decrease in effect size over the years with increasing sample sizes. CONCLUSIONS This study does not support the association between SNP rs6265 and hippocampal volume in healthy individuals. The weakly significant effect observed in the meta-analysis is mainly driven by studies with small sample sizes. In contrast, our original data and the meta-analysis of automatically segmented hippocampal volumes, which was based on studies with large samples sizes, revealed no significant genotype effect. Thus, meta-analyses of the association between rs6265 and hippocampal volumes should consider possible biases related to measuring technique and sample size.
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Affiliation(s)
- F Harrisberger
- University of Basel, Department of Psychiatry (UPK), Wilhelm Klein-Strasse 27, 4056 Basel, Switzerland; University Hospital Basel, Medical Image Analysis Center, Schanzenstrasse 55, 4031 Basel, Switzerland
| | - K Spalek
- University of Basel, Department of Psychology, Division of Cognitive Neuroscience, Birmannsgasse 8, 4055 Basel, Switzerland
| | - R Smieskova
- University of Basel, Department of Psychiatry (UPK), Wilhelm Klein-Strasse 27, 4056 Basel, Switzerland; University Hospital Basel, Medical Image Analysis Center, Schanzenstrasse 55, 4031 Basel, Switzerland
| | - A Schmidt
- University of Basel, Department of Psychiatry (UPK), Wilhelm Klein-Strasse 27, 4056 Basel, Switzerland; University Hospital Basel, Medical Image Analysis Center, Schanzenstrasse 55, 4031 Basel, Switzerland
| | - D Coynel
- University of Basel, Department of Psychology, Division of Cognitive Neuroscience, Birmannsgasse 8, 4055 Basel, Switzerland; University of Basel, Department of Psychology, Division of Molecular Neuroscience, Birmannsgasse 8, 4055 Basel, Switzerland
| | - A Milnik
- University of Basel, Department of Psychology, Division of Molecular Neuroscience, Birmannsgasse 8, 4055 Basel, Switzerland
| | - M Fastenrath
- University of Basel, Department of Psychology, Division of Cognitive Neuroscience, Birmannsgasse 8, 4055 Basel, Switzerland
| | - V Freytag
- University of Basel, Department of Psychology, Division of Molecular Neuroscience, Birmannsgasse 8, 4055 Basel, Switzerland
| | - L Gschwind
- University of Basel, Department of Psychology, Division of Cognitive Neuroscience, Birmannsgasse 8, 4055 Basel, Switzerland
| | - A Walter
- University of Basel, Department of Psychiatry (UPK), Wilhelm Klein-Strasse 27, 4056 Basel, Switzerland
| | - T Vogel
- University of Basel, Department of Psychiatry (UPK), Wilhelm Klein-Strasse 27, 4056 Basel, Switzerland
| | - K Bendfeldt
- University Hospital Basel, Medical Image Analysis Center, Schanzenstrasse 55, 4031 Basel, Switzerland
| | - D J-F de Quervain
- University of Basel, Department of Psychiatry (UPK), Wilhelm Klein-Strasse 27, 4056 Basel, Switzerland; University of Basel, Department of Psychology, Division of Cognitive Neuroscience, Birmannsgasse 8, 4055 Basel, Switzerland
| | - A Papassotiropoulos
- University of Basel, Department of Psychiatry (UPK), Wilhelm Klein-Strasse 27, 4056 Basel, Switzerland; University of Basel, Department of Psychology, Division of Molecular Neuroscience, Birmannsgasse 8, 4055 Basel, Switzerland; University of Basel, Department Biozentrum, Life Science Training Facility, Klingelbergstrasse 50/70, 4056 Basel, Switzerland
| | - S Borgwardt
- University of Basel, Department of Psychiatry (UPK), Wilhelm Klein-Strasse 27, 4056 Basel, Switzerland; University Hospital Basel, Medical Image Analysis Center, Schanzenstrasse 55, 4031 Basel, Switzerland; King's College London, Department of Psychosis Studies, Institute of Psychiatry, De Crespigny Park 16, SE5 8AF London, UK.
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Soeda F, Hirakawa E, Inoue M, Shirasaki T, Takahama K. Cloperastine rescues impairment of passive avoidance response in mice prenatally exposed to diethylstilbestrol. ENVIRONMENTAL TOXICOLOGY 2014; 29:216-225. [PMID: 22223406 DOI: 10.1002/tox.21749] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 11/11/2011] [Accepted: 11/13/2011] [Indexed: 05/31/2023]
Abstract
We previously reported that prenatal exposure to diethylstilbestrol (DES) impaired passive avoidance responses in mice. Apart from the above, we also found that cloperastine, a centrally acting antitussive, ameliorated depression-like and anxiety-like behaviors in rodents at antitussive-effective doses. In this study, we investigated whether or not cloperastine rescues impairment of passive avoidance responses in mice prenatally exposed to DES. Male DES-exposed mice were subcutaneously administered cloperastine at 10 or 30 mg/kg twice a day from 32 to 41 days after birth and subjected to behavioral testing 42 to 46 days after birth. Cloperastine at 10 and 30 mg/kg ameliorated DES-induced impairment of passive avoidance responses. In addition, cloperastine affected the levels of 5-HT1A receptors, GIRK and BDNF in the hippocampus of DES-exposed mice. However, the number of BrdU-positive cells in the hippocampus of DES-exposed mice was not changed by chronic administration of cloperastine. These findings suggest that the action of endocrine disruptors in the brain may not always be irreversible, and that the symptoms caused by endocrine disruptors might be curable with drugs such as cloperastine.
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Affiliation(s)
- Fumio Soeda
- Department of Environmental and Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
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Ogier M, Kron M, Katz DM. Neurotrophic factors in development and regulation of respiratory control. Compr Physiol 2013; 3:1125-34. [PMID: 23897682 DOI: 10.1002/cphy.c120029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Neurotrophic factors (NTFs) are a heterogeneous group of extracellular signaling molecules that play critical roles in the development, maintenance, modulation and plasticity of the central and peripheral nervous systems. A subset of these factors, including members of three multigene families-the neurotrophins, neuropoetic cytokines and the glial cell line-derived neurotrophic factor ligands-are particularly important for development and regulation of neurons involved in respiratory control. Here, we review the functional biology of these NTFs and their receptors, as well as their roles in regulating survival, maturation, synaptic strength and plasticity in respiratory control pathways. In addition, we highlight recent progress in identifying the role of abnormal NTF signaling in the molecular pathogenesis of respiratory dysfunction in Rett syndrome and in the development of potential new NTF-targeted therapeutic strategies.
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Affiliation(s)
- Michael Ogier
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
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von Bastian CC, Oberauer K. Effects and mechanisms of working memory training: a review. PSYCHOLOGICAL RESEARCH 2013; 78:803-20. [PMID: 24213250 DOI: 10.1007/s00426-013-0524-6] [Citation(s) in RCA: 169] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 10/19/2013] [Indexed: 11/29/2022]
Abstract
Can cognitive abilities such as reasoning be improved through working memory training? This question is still highly controversial, with prior studies providing contradictory findings. The lack of theory-driven, systematic approaches and (occasionally serious) methodological shortcomings complicates this debate even more. This review suggests two general mechanisms mediating transfer effects that are (or are not) observed after working memory training: enhanced working memory capacity, enabling people to hold more items in working memory than before training, or enhanced efficiency using the working memory capacity available (e.g., using chunking strategies to remember more items correctly). We then highlight multiple factors that could influence these mechanisms of transfer and thus the success of training interventions. These factors include (1) the nature of the training regime (i.e., intensity, duration, and adaptivity of the training tasks) and, with it, the magnitude of improvements during training, and (2) individual differences in age, cognitive abilities, biological factors, and motivational and personality factors. Finally, we summarize the findings revealed by existing training studies for each of these factors, and thereby present a roadmap for accumulating further empirical evidence regarding the efficacy of working memory training in a systematic way.
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Affiliation(s)
- Claudia C von Bastian
- Department of Psychology, University Research Priority Program "Dynamics of Healthy Aging", University of Zurich, Binzmühlestrasse 14/22, 8050, Zurich, Switzerland,
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Role of activity-dependent BDNF expression in hippocampal-prefrontal cortical regulation of behavioral perseverance. Proc Natl Acad Sci U S A 2013; 110:15103-8. [PMID: 23980178 DOI: 10.1073/pnas.1222872110] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Activity-dependent gene transcription, including that of the brain-derived neurotrophic factor (Bdnf) gene, has been implicated in various cognitive functions. We previously demonstrated that mutant mice with selective disruption of activity-dependent BDNF expression (BDNF-KIV mice) exhibit deficits in GABA-mediated inhibition in the prefrontal cortex (PFC). Here, we show that disruption of activity-dependent BDNF expression impairs BDNF-dependent late-phase long-term potentiation (L-LTP) in CA1, a site of hippocampal output to the PFC. Interestingly, early-phase LTP and conventional L-LTP induced by strong tetanic stimulation were completely normal in BDNF-KIV mice. In parallel, attenuation of activity-dependent BDNF expression significantly impairs spatial memory reversal and contextual memory extinction, two executive functions that require intact hippocampal-PFC circuitry. In contrast, spatial and contextual memory per se were not affected. Thus, activity-dependent BDNF expression in the hippocampus and PFC may contribute to cognitive and behavioral flexibility. These results suggest distinct roles for different forms of L-LTP and provide a link between activity-dependent BDNF expression and behavioral perseverance, a hallmark of several psychiatric disorders.
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Abstract
Changes in brain circuits occur within specific paradigms of action in the adult brain. These paradigms include changes in behavioral activity patterns, alterations in environmental experience, and direct brain injury. Each of these paradigms can produce axonal sprouting, dendritic morphology changes, and alterations in synaptic connectivity. Activity-, experience-, and injury-dependent plasticity alter neuronal network function and behavioral output, and in the case of brain injury, may produce neurological recovery. The molecular substrate for adult neuronal plasticity overlaps in these three paradigms in key signaling pathways. These common pathways for adult plasticity suggest common mechanisms for activity-, experience-, and injury-dependent plasticity. These common pathways may also interact to enhance or impede each other during adult recovery of function after injury. This review focuses on common molecular changes evoked during the process of adult neuronal plasticity, with a focus on neural repair in stroke.
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Brain-derived neurotrophic factor (BDNF) Val(66)Met polymorphism differentially predicts hippocampal function in medication-free patients with schizophrenia. Mol Psychiatry 2013; 18:713-20. [PMID: 23319002 PMCID: PMC3628926 DOI: 10.1038/mp.2012.187] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A Val(66)Met single-nucleotide polymorphism (SNP) in the brain-derived neurotrophic factor (BDNF) gene impairs activity-dependent BDNF release in cultured hippocampal neurons and predicts impaired memory and exaggerated basal hippocampal activity in healthy humans. Several clinical genetic association studies along with multi-modal evidence for hippocampal dysfunction in schizophrenia indirectly suggest a relationship between schizophrenia and genetically determined BDNF function in the hippocampus. To directly test this hypothesized relationship, we studied 47 medication-free patients with schizophrenia or schizoaffective disorder and 74 healthy comparison individuals with genotyping for the Val(66)Met SNP and [(15)O]H(2)O positron emission tomography (PET) to measure resting and working memory-related hippocampal regional cerebral blood flow (rCBF). In patients, harboring a Met allele was associated with significantly less hippocampal rCBF. This finding was opposite to the genotype effect seen in healthy participants, resulting in a significant diagnosis-by-genotype interaction. Exploratory analyses of interregional resting rCBF covariation revealed a specific and significant diagnosis-by-genotype interaction effect on hippocampal-prefrontal coupling. A diagnosis-by-genotype interaction was also found for working memory-related hippocampal rCBF change, which was uniquely attenuated in Met allele-carrying patients. Thus, both task-independent and task-dependent hippocampal neurophysiology accommodates a Met allelic background differently in patients with schizophrenia than in control subjects. Potentially consistent with the hypothesis that cellular sequelae of the BDNF Val(66)Met SNP interface with aspects of schizophrenic hippocampal and frontotemporal dysfunction, these results warrant future investigation to understand the contributions of unique patient trait or state variables to these robust interactions.
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Zhen YF, Zhang J, Liu XY, Fang H, Tian LB, Zhou DH, Kosten TR, Zhang XY. Low BDNF is associated with cognitive deficits in patients with type 2 diabetes. Psychopharmacology (Berl) 2013; 227:93-100. [PMID: 23263460 DOI: 10.1007/s00213-012-2942-3] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Accepted: 11/27/2012] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Studies suggest that brain-derived neurotrophic factor (BDNF) plays an essential role in regulating memory-related neuroplasticity in the hippocampus. Type 2 diabetes (T2DM) is associated with impairment in many domains of cognitive function which may result from reduced BDNF; however, the correlation of BDNF with cognitive impairment in T2DM has not been investigated. MATERIALS AND METHODS We compared 208 patients with T2DM to 212 normal controls on serum BDNF and the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). RESULTS Serum BDNF levels were significantly decreased in T2DM patients compared to normal controls (p < 0.001). The total score and nearly all indexes (all p < 0.01) except for attention and visuospatial/constructional indexes (all p > 0.05) of RBANS were markedly lower in T2DM than controls. There was a positive relationship between serum BDNF and delayed memory in patients with T2DM. CONCLUSION Our results suggest that BDNF may play a role in the pathophysiology of cognitive deficits, especially delayed memory in T2DM.
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Affiliation(s)
- Yan Feng Zhen
- Department of Internal Medicine, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China
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Carballedo A, Morris D, Zill P, Fahey C, Reinhold E, Meisenzahl E, Bondy B, Gill M, Möller HJ, Frodl T. Brain-derived neurotrophic factor Val66Met polymorphism and early life adversity affect hippocampal volume. Am J Med Genet B Neuropsychiatr Genet 2013; 162B:183-90. [PMID: 23341118 DOI: 10.1002/ajmg.b.32130] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 12/21/2012] [Indexed: 01/19/2023]
Abstract
The interaction between adverse life events during childhood and genetic factors is associated with a higher risk to develop major depressive disorder (MDD). One of the polymorphisms found to be associated with MDD is the Val66MET polymorphism of brain-derived neurotrophic factor (BDNF). The aim of our two-center study was to determine how the BDNF Val66Met polymorphism and childhood adversity affect the volumetric measures of the hippocampus in healthy individuals and people with MDD. In this two-center study, 62 adult patients with MDD and 71 healthy matched controls underwent high-resolution magnetic resonance imaging. We used manual tracing of the bilateral hippocampal structure with help of the software BRAINS2, assessed childhood adversity using the Childhood Trauma Questionnaire and genotyped Val66Met BDNF SNP (rs6265). MDD patients had smaller hippocampal volumes, both in the left and right hemispheres (F = 5.4, P = 0.022). We also found a significant interaction between BDNF allele and history of childhood adversity (F = 6.1, P = 0.015): Met allele carriers in our samples showed significantly smaller hippocampal volumes when they did have a history of childhood adversity, both in patients and controls. Our results highlight how relevant stress-gene interactions are for hippocampal volume reductions. Subjects exposed to early life adversity developed smaller hippocampal volumes when they carry the Met-allele of the BDNF polymorphism.
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Affiliation(s)
- Angela Carballedo
- Department of Psychiatry and Institute of Neuroscience, University of Dublin, Trinity College Dublin, Dublin, Ireland.
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Ernst C, Marshall CR, Shen Y, Metcalfe K, Rosenfeld J, Hodge JC, Torres A, Blumenthal I, Chiang C, Pillalamarri V, Crapper L, Diallo AB, Ruderfer D, Pereira S, Sklar P, Purcell S, Wildin RS, Spencer AC, Quade BF, Harris DJ, Lemyre E, Wu BL, Stavropoulos DJ, Geraghty MT, Shaffer LG, Morton CC, Scherer SW, Gusella JF, Talkowski ME. Highly penetrant alterations of a critical region including BDNF in human psychopathology and obesity. ACTA ACUST UNITED AC 2013; 69:1238-46. [PMID: 23044507 DOI: 10.1001/archgenpsychiatry.2012.660] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
CONTEXT Brain-derived neurotrophic factor (BDNF) is suspected of being a causative factor in psychiatric disorders based on case reports or studies involving large structural anomalies. OBJECTIVE To determine the involvement of BDNF in human psychopathology. DESIGN Case-control study. SETTING Microarray-based comparative genomic hybridization data from 7 molecular diagnostic centers including 38 550 affected subjects and 28 705 unaffected subjects. PATIENTS Subjects referred to diagnostic screening centers for microarray-based comparative genomic hybridization for physical or cognitive impairment. MAIN OUTCOME MEASURES Genomic copy number gains and losses. RESULTS We report 5 individuals with psychopathology and genomic deletion of a critical region including BDNF. The defined critical region was never disrupted in control subjects or diagnostic cases without developmental abnormalities. CONCLUSION Hemizygosity of the BDNF region contributes to variable psychiatric phenotypes including anxiety, behavioral, and mood disorders.
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Molendijk ML, Haffmans JPM, Bus BAA, Spinhoven P, Penninx BWJH, Prickaerts J, Oude Voshaar RC, Elzinga BM. Serum BDNF concentrations show strong seasonal variation and correlations with the amount of ambient sunlight. PLoS One 2012; 7:e48046. [PMID: 23133609 PMCID: PMC3487856 DOI: 10.1371/journal.pone.0048046] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 09/20/2012] [Indexed: 01/09/2023] Open
Abstract
Earlier findings show seasonality in processes and behaviors such as brain plasticity and depression that in part are regulated by Brain-Derived Neurotrophic Factor (BDNF). Based on this we investigated seasonal variation in serum BDNF concentrations in 2,851 persons who took part in the Netherlands Study of Depression and Anxiety (NESDA). Analyses by month of sampling (monthly n's >196) showed pronounced seasonal variation in serum BDNF concentrations (P<.0001) with increasing concentrations in the spring-summer period (standardized regression weight (ß) = 0.19, P<.0001) and decreasing concentrations in the autumn-winter period (ß = -0.17, P<.0001). Effect sizes [Cohen's d] ranged from 0.27 to 0.66 for monthly significant differences. We found similar seasonal variation for both sexes and for persons with a DSM-IV depression diagnosis and healthy control subjects. In explorative analyses we found that the number of sunshine hours (a major trigger to entrain seasonality) in the week of blood withdrawal and the 10 weeks prior to this event positively correlated with serum BDNF concentrations (Pearson's correlation coefficients ranged: 0.05-0.18) and this could partly explain the observed monthly variation. These results provide strong evidence that serum BDNF concentrations systematically vary over the year. This finding is important for our understanding of those factors that regulate BDNF expression and may provide novel avenues to understand seasonal dependent changes in behavior and illness such as depression. Finally, the findings reported here should be taken into account when designing and interpreting studies on BDNF.
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Affiliation(s)
- Marc L Molendijk
- Institute of Psychology, Leiden University, Leiden, The Netherlands.
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