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Zou Y, Zhang Y, Tu M, Ye Y, Li M, Ran R, Zou Z. Brain-derived neurotrophic factor levels across psychiatric disorders: A systemic review and network meta-analysis. Prog Neuropsychopharmacol Biol Psychiatry 2024; 131:110954. [PMID: 38286331 DOI: 10.1016/j.pnpbp.2024.110954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 01/07/2024] [Accepted: 01/24/2024] [Indexed: 01/31/2024]
Abstract
As an important neurotrophic factor in the central nervous system, Brain-derived Neurotrophic Factor (BDNF) has been implicated in the pathophysiology of psychiatric disorders in many studies. However, its value as a biomarker for the diagnosis and differential diagnosis of mental disorders is still controversial, and its change patterns among different mental disorders have not been compared. We conducted a network meta-analysis of BDNF levels in different psychiatric disorders including schizophrenia(SCZ), major depressive disorder(MDD), bipolar disorder(BD), panic disorder(PD), post-traumatic stress disorder(PTSD), obsessive-compulsive disorder(OCD), generalized anxiety disorder(GAD) and insomnia. Studies were identified by searching electronic databases through 31/05/2023. BDNF levels decreased in patients with BD, MDD, OCD, PD, SCZ compared with controls, while significantly increased in patients with PTSD. According to the network meta-analysis, BDNF levels were significantly decreased in MDD and SCZ compared with BD (-2.6, 95% CIs [-5.32 to -0.15] and - 2.68 95% CIs [-5.18 to -0.23] respectively). However, in the traditional meta-analysis, there was a trend towards lower BDNF levels in SCZ compared to BD, with no significant difference (SMD = -0.20, 95% CIs [-0.49 to 0.08]). In conclusion, abnormal BDNF levels have been found in psychiatric disorders, and the changes in peripheral BDNF levels in patients with psychiatric disorders were reconfirmed in this study, which suggests BDNF exhibits promising clinical utility and may hold diagnostic value in distinguishing between MDD and BD.
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Affiliation(s)
- Yazhu Zou
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Yuan Zhang
- Department of pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Mengtian Tu
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Yu Ye
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Mingmei Li
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Rongting Ran
- Southwest Medical University, Luzhou, Sichuan, China
| | - Zhili Zou
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, Sichuan, China; Key Laboratory of psychosomatic medicine, Chinese Academy of Medical Sciences, Chengdu, Sichuan, China.
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Dąbkowska M, Stukan I, Kosiorowska A, Szatanik A, Łuczkowska K, Machalińska A, Machaliński B. In vitro and in vivo characterization of human serum albumin-based PEGylated nanoparticles for BDNF and NT3 codelivery. Int J Biol Macromol 2024; 265:130726. [PMID: 38490392 DOI: 10.1016/j.ijbiomac.2024.130726] [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: 10/13/2023] [Revised: 02/28/2024] [Accepted: 03/06/2024] [Indexed: 03/17/2024]
Abstract
The utilization of neurotrophins in medicine shows significant potential for addressing neurodegenerative conditions, such as age-related macular degeneration (AMD). However, the therapeutic use of neurotrophins has been restricted due to their short half-life. Here, we aimed to synthesize PEGylated nanoparticles based on electrostatic-driven interactions between human serum albumin (HSA), a carrier for adsorption; neurotrophin-3 (NT3); and brain-derived neurotrophic factor (BDNF). Electrophoretic (ELS) and multi-angle dynamic light scattering (MADLS) revealed that the PEGylated HSA-NT3-BDNF nanoparticles ranged from 10 to 430 nm in diameter and exhibited a low polydispersity index (<0.4) and a zeta potential of -8 mV. Based on microscale thermophoresis (MST), the estimated dissociation constant (Kd) from the HSA molecule of BDNF was 1.6 μM, and the Kd of NT3 was 732 μM. The nanoparticles were nontoxic toward ARPE-19 and L-929 cells in vitro and efficiently delivered BDNF and NT3. Based on the biodistribution of neurotrophins after intravitreal injection into BALB/c mice, both nanoparticles were gradually released in the mouse vitreous body within 28 days. PEGylated HSA-NT3-BDNF nanoparticles stabilize neurotrophins and maintain this characteristic in vivo. Thus, given the simplicity of the system, the nanoparticles may enhance the treatment of a variety of neurological disorders in the future.
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Affiliation(s)
- Maria Dąbkowska
- Independent Laboratory of Pharmacokinetic and Clinical Pharmacy, Rybacka 1, 71-899 Szczecin, Poland.
| | - Iga Stukan
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-111 Szczecin, Poland
| | - Alicja Kosiorowska
- Independent Laboratory of Pharmacokinetic and Clinical Pharmacy, Rybacka 1, 71-899 Szczecin, Poland; Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-111 Szczecin, Poland
| | - Alicja Szatanik
- Independent Laboratory of Pharmacokinetic and Clinical Pharmacy, Rybacka 1, 71-899 Szczecin, Poland
| | - Karolina Łuczkowska
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-111 Szczecin, Poland
| | - Anna Machalińska
- First Department of Ophthalmology, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Bogusław Machaliński
- Department of General Pathology, Pomeranian Medical University, Rybacka 1, 70-111 Szczecin, Poland
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Dell’Oste V, Palego L, Betti L, Fantasia S, Gravina D, Bordacchini A, Pedrinelli V, Giannaccini G, Carmassi C. Plasma and Platelet Brain-Derived Neurotrophic Factor (BDNF) Levels in Bipolar Disorder Patients with Post-Traumatic Stress Disorder (PTSD) or in a Major Depressive Episode Compared to Healthy Controls. Int J Mol Sci 2024; 25:3529. [PMID: 38542503 PMCID: PMC10970837 DOI: 10.3390/ijms25063529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/15/2024] [Accepted: 03/18/2024] [Indexed: 04/04/2024] Open
Abstract
Post-traumatic stress disorder (PTSD) is a highly disabling mental disorder arising after traumatism exposure, often revealing critical and complex courses when comorbidity with bipolar disorder (BD) occurs. To search for PTSD or depression biomarkers that would help clinicians define BD presentations, this study aimed at preliminarily evaluating circulating brain-derived-neurotrophic factor (BDNF) levels in BD subjects with PTSD or experiencing a major depressive episode versus controls. Two bloodstream BDNF components were specifically investigated, the storage (intraplatelet) and the released (plasma) ones, both as adaptogenic/repair signals during neuroendocrine stress response dynamics. Bipolar patients with PTSD (n = 20) or in a major depressive episode (n = 20) were rigorously recruited together with unrelated healthy controls (n = 24) and subsequently examined by psychiatric questionnaires and blood samplings. Platelet-poor plasma (PPP) and intraplatelet (PLT) BDNF were measured by ELISA assays. The results showed markedly higher intraplatelet vs. plasma BDNF, confirming platelets' role in neurotrophin transport/storage. No between-group PPP-BDNF difference was reported, whereas PLT-BDNF was significantly reduced in depressed BD patients. PLT-BDNF negatively correlated with mood scores but not with PTSD items like PPP-BDNF, which instead displayed opposite correlation trends with depression and manic severity. Present findings highlight PLT-BDNF as more reliable at detecting depression than PTSD in BD, encouraging further study into BDNF variability contextually with immune-inflammatory parameters in wider cohorts of differentially symptomatic bipolar patients.
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Affiliation(s)
- Valerio Dell’Oste
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (L.P.); (S.F.); (D.G.); (A.B.); (V.P.); (C.C.)
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy
- UFCSMA Zona Valdinievole, Azienda USL Toscana Centro, 51016 Montecatini Terme, Italy
| | - Lionella Palego
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (L.P.); (S.F.); (D.G.); (A.B.); (V.P.); (C.C.)
- Department of Pharmacy, Section of Biochemistry, University of Pisa, 56126 Pisa, Italy; (L.B.); (G.G.)
| | - Laura Betti
- Department of Pharmacy, Section of Biochemistry, University of Pisa, 56126 Pisa, Italy; (L.B.); (G.G.)
| | - Sara Fantasia
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (L.P.); (S.F.); (D.G.); (A.B.); (V.P.); (C.C.)
| | - Davide Gravina
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (L.P.); (S.F.); (D.G.); (A.B.); (V.P.); (C.C.)
| | - Andrea Bordacchini
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (L.P.); (S.F.); (D.G.); (A.B.); (V.P.); (C.C.)
| | - Virginia Pedrinelli
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (L.P.); (S.F.); (D.G.); (A.B.); (V.P.); (C.C.)
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy
- UFSMA Zona Apuana, Azienda USL Toscana Nord Ovest, 54100 Massa, Italy
| | - Gino Giannaccini
- Department of Pharmacy, Section of Biochemistry, University of Pisa, 56126 Pisa, Italy; (L.B.); (G.G.)
| | - Claudia Carmassi
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (L.P.); (S.F.); (D.G.); (A.B.); (V.P.); (C.C.)
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Boukhatem I, Fleury S, Jourdi G, Lordkipanidzé M. The intriguing role of platelets as custodians of brain-derived neurotrophic factor. Res Pract Thromb Haemost 2024; 8:102398. [PMID: 38706782 PMCID: PMC11066552 DOI: 10.1016/j.rpth.2024.102398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/26/2024] [Accepted: 03/18/2024] [Indexed: 05/07/2024] Open
Abstract
A State of the Art lecture titled "Platelets and neurotrophins" was presented at the International Society on Thrombosis and Haemostasis Congress in 2023. Neurotrophins, a family of neuronal growth factors known to support cognitive function, are increasingly recognized as important players in vascular health. Indeed, along with their canonical receptors, neurotrophins are expressed in peripheral tissues, particularly in the vasculature. The better-characterized neurotrophin in vascular biology is the brain-derived neurotrophic factor (BDNF). Its largest extracerebral pool resides within platelets, partly inherited from megakaryocytes and also likely internalized from circulation. Activation of platelets releases vast amounts of BDNF into their milieu and interestingly leads to platelet aggregation through binding of its receptor, the tropomyosin-related kinase B, on the platelet surface. As BDNF is readily available in plasma, a mechanism to preclude excessive platelet activation and aggregation appears critical. As such, binding of BDNF to α2-macroglobulin hinders its ability to bind its receptor and limits its platelet-activating effects to the site of vascular injury. Altogether, addition of BDNF to a forming clot facilitates not only paracrine platelet activation but also binding to fibrinogen, rendering the resulting clot more porous and plasma-permeable. Importantly, release of BDNF into circulation also appears to be protective against adverse cardiovascular and cerebrovascular outcomes, which has been reported in both animal models and epidemiologic studies. This opens an avenue for platelet-based strategies to deliver BDNF to vascular lesions and facilitate wound healing through its regenerative properties. Finally, we summarize relevant new data on this topic presented during the 2023 International Society on Thrombosis and Haemostasis Congress.
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Affiliation(s)
- Imane Boukhatem
- Research Center, Montreal Heart Institute, Montreal, Quebec, Canada
- Faculty of Pharmacy, Université de Montréal, Montreal, Quebec, Canada
| | - Samuel Fleury
- Research Center, Montreal Heart Institute, Montreal, Quebec, Canada
- Faculty of Pharmacy, Université de Montréal, Montreal, Quebec, Canada
| | - Georges Jourdi
- Research Center, Montreal Heart Institute, Montreal, Quebec, Canada
- Faculty of Pharmacy, Université de Montréal, Montreal, Quebec, Canada
- Université Paris Cité, Institut National de la Santé Et de la Recherche Médicale, Innovative Therapies in Haemostasis, Paris, France
- Service d’Hématologie Biologique, Assistance Publique : Hôpitaux de Paris, Hôpital Lariboisière, Paris, France
| | - Marie Lordkipanidzé
- Research Center, Montreal Heart Institute, Montreal, Quebec, Canada
- Faculty of Pharmacy, Université de Montréal, Montreal, Quebec, Canada
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Ikenouchi A, Okamoto N, Hamada S, Chibaatar E, Fujii R, Konishi Y, Igata R, Tesen H, Yoshimura R. Association between salivary mature brain-derived neurotrophic factor and psychological distress in healthcare workers. Brain Behav 2023; 13:e3278. [PMID: 37822121 PMCID: PMC10726813 DOI: 10.1002/brb3.3278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 08/28/2023] [Accepted: 09/28/2023] [Indexed: 10/13/2023] Open
Abstract
INTRODUCTION Previous studies have suggested association between brain-derived neurotrophic factor (BDNF) and the stress level of workers. However, no studies have investigated the potential of salivary mature BDNF (mBDNF) level as a noninvasive biomarker for psychological distress. This study aimed to explore the reliability of salivary mBDNF as a biomarker for psychological distress in healthcare workers. Furthermore, we examined the relationship between salivary and plasma mBDNF levels and their correlation with age, sex, body mass index (BMI), and exercise habits. METHODS Fifty-one healthy healthcare workers (26 men) from the University of Occupational and Environmental Health, Japan, participated in this study. In this cross-sectional study, participants provided demographic information. Psychological distress was assessed using the Kessler 6 (K6). Saliva and blood samples were collected, and mBDNF was measured by ELISA. Spearman's rank correlation coefficient was performed to analyze the relationship between mBDNF (saliva and plasma) and K6. Statistical analyses were conducted using Stata 17.0, and a significance level of p < .05 was applied. RESULTS The median K6 score was 1 (interquartile range [IQR]: 0-3). The median (IQR) salivary mBDNF was 1.36 (1.12-1.96) pg/mL, whereas the mean (standard deviation) plasma mBDNF was 1261.11 (242.98) pg/mL. No correlation was observed between salivary and plasma mBDNF concentrations or with the K6 score. Additionally, there were no associations between salivary or plasma mBDNF concentrations and age, sex, or exercise habits. Finally, an association between plasma mBDNF concentration and BMI was found only in univariate analysis. CONCLUSION Our findings indicate that salivary mBDNF can be accurately measured noninvasively in healthcare workers. Within our study sample, salivary mBDNF did not demonstrate any correlation with K6 and plasma mBDNF. Future studies with a larger study sample and a diverse study population consisting of healthy participants and patients with psychiatric disorders are warranted.
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Affiliation(s)
- Atsuko Ikenouchi
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
- Medical Center for DementiaHospital of University of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Naomichi Okamoto
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Shinsuke Hamada
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
- Medical Center for DementiaHospital of University of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Enkhmurun Chibaatar
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Rintaro Fujii
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Yuki Konishi
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Ryohei Igata
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Hirofumi Tesen
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
| | - Reiji Yoshimura
- Department of PsychiatryUniversity of Occupational and Environmental Health, JapanKitakyushuJapan
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Cefis M, Chaney R, Wirtz J, Méloux A, Quirié A, Leger C, Prigent-Tessier A, Garnier P. Molecular mechanisms underlying physical exercise-induced brain BDNF overproduction. Front Mol Neurosci 2023; 16:1275924. [PMID: 37868812 PMCID: PMC10585026 DOI: 10.3389/fnmol.2023.1275924] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023] Open
Abstract
Accumulating evidence supports that physical exercise (EX) is the most effective non-pharmacological strategy to improve brain health. EX prevents cognitive decline associated with age and decreases the risk of developing neurodegenerative diseases and psychiatric disorders. These positive effects of EX can be attributed to an increase in neurogenesis and neuroplastic processes, leading to learning and memory improvement. At the molecular level, there is a solid consensus to involve the neurotrophin brain-derived neurotrophic factor (BDNF) as the crucial molecule for positive EX effects on the brain. However, even though EX incontestably leads to beneficial processes through BDNF expression, cellular sources and molecular mechanisms underlying EX-induced cerebral BDNF overproduction are still being elucidated. In this context, the present review offers a summary of the different molecular mechanisms involved in brain's response to EX, with a specific focus on BDNF. It aims to provide a cohesive overview of the three main mechanisms leading to EX-induced brain BDNF production: the neuronal-dependent overexpression, the elevation of cerebral blood flow (hemodynamic hypothesis), and the exerkine signaling emanating from peripheral tissues (humoral response). By shedding light on these intricate pathways, this review seeks to contribute to the ongoing elucidation of the relationship between EX and cerebral BDNF expression, offering valuable insights into the potential therapeutic implications for brain health enhancement.
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Affiliation(s)
- Marina Cefis
- Département des Sciences de l’Activité Physique, Faculté des Sciences, Université du Québec à Montréal, Montreal, QC, Canada
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Remi Chaney
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Julien Wirtz
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Alexandre Méloux
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Aurore Quirié
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Clémence Leger
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Anne Prigent-Tessier
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
| | - Philippe Garnier
- INSERM UMR1093-CAPS, Université de Bourgogne, UFR des Sciences de Santé, Dijon, France
- Département Génie Biologique, Institut Universitaire de Technologie, Dijon, France
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Jourdi G, Boukhatem I, Barcelona PF, Fleury S, Welman M, Saragovi HU, Pasquali S, Lordkipanidzé M. Alpha-2-macroglobulin prevents platelet aggregation induced by brain-derived neurotrophic factor. Biochem Pharmacol 2023; 215:115701. [PMID: 37487878 DOI: 10.1016/j.bcp.2023.115701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/07/2023] [Accepted: 07/21/2023] [Indexed: 07/26/2023]
Abstract
The brain-derived neurotrophic factor (BDNF) has been recently shown to have activating effects in isolated platelets. However, BDNF circulates in plasma and a mechanism to preclude constant activation of platelets appears necessary. Hence, we investigated the mechanism regulating BDNF bioavailability in blood. Protein-protein interactions were predicted by molecular docking and validated through immunoprecipitation. Platelet aggregation was assessed using light transmission aggregometry with washed platelets in response to classical agonists or BDNF, in the absence or presence of alpha-2-macroglobulin (α2M), and in platelet-rich plasma. BDNF signaling was assessed with phospho-blots. As little as 25% autologous plasma was sufficient to completely abolish platelet aggregation in response to BDNF. Docking predicted two forms of BDNF binding to native or activated α2M, in parallel and perpendicular arrangements, and the model suggested that the BDNF-α2M complex cannot bind to the high-affinity BDNF receptor, tropomyosin receptor kinase B (TrkB). Experimentally, native and activated α2M formed stable complexes with BDNF preventing BDNF-induced TrkB activation and signal transduction. Both native and activated α2M inhibited BDNF induced-platelet aggregation in a concentration-dependent manner with comparable half-maximal inhibitory concentrations (IC50≈ 125-150 nM). Our study implicates α2M as a physiological regulator of BDNF bioavailability, and as an inhibitor of BDNF-induced platelet activation in blood.
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Affiliation(s)
- Georges Jourdi
- Research Center, Montreal Heart Institute, Montreal, QC H1T 1C8, Canada; Faculty of Pharmacy, Université de Montréal, Montreal, QC H3T 1J4, Canada; Université Paris Cité, INSERM, Innovative Therapies in Haemostasis, F-75006 Paris, France; Service d'Hématologie Biologique, AP-HP, Hôpital Lariboisière, F-75010 Paris, France
| | - Imane Boukhatem
- Research Center, Montreal Heart Institute, Montreal, QC H1T 1C8, Canada; Faculty of Pharmacy, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Pablo F Barcelona
- Departamento de Bioquímica Clínica, Centro de Investigaciones en Bioquímica Clínica e, Inmunología (CIBICI-CONICET), Universidad Nacional de Córdoba, Córdoba 5016, Argentina
| | - Samuel Fleury
- Research Center, Montreal Heart Institute, Montreal, QC H1T 1C8, Canada; Faculty of Pharmacy, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Melanie Welman
- Research Center, Montreal Heart Institute, Montreal, QC H1T 1C8, Canada
| | - H Uri Saragovi
- Lady Davis Institute-Jewish General Hospital, Montreal, QC H3T 1E2, Canada; Department of Pharmacology and Therapeutics, McGill University, Montreal, QC H3A 0G4, Canada
| | - Samuela Pasquali
- Université Paris Cité, CNRS UMR 8038, Laboratoire Cibles Thérapeutiques et Conception de Médicaments, F-75006 Paris, France; Université Paris Cité, CNRS UMR 8251, Laboratoire Biologie Fonctionnelle et Adaptative, F-75006 Paris, France
| | - Marie Lordkipanidzé
- Research Center, Montreal Heart Institute, Montreal, QC H1T 1C8, Canada; Faculty of Pharmacy, Université de Montréal, Montreal, QC H3T 1J4, Canada.
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Fatma R, Chauhan W, Shahi MH, Afzal M. Association of BDNF gene missense polymorphism rs6265 (Val66Met) with three quantitative traits, namely, intelligence quotient, body mass index, and blood pressure: A genetic association analysis from North India. Front Neurol 2023; 13:1035885. [PMID: 36742047 PMCID: PMC9894895 DOI: 10.3389/fneur.2022.1035885] [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: 09/03/2022] [Accepted: 12/28/2022] [Indexed: 01/21/2023] Open
Abstract
Background Brain-derived neurotrophic factor (BDNF), a neurotransmitter modulator, plays a significant role in neuronal survival and growth and participates in neuronal plasticity, thus being essential for learning, memory, and the development of cognition. Additionally, it is crucial for appetite, weight, and metabolic control and plays a pivotal role in the cardiovascular system. The Val66Met polymorphism (rs6265) of the BDNF gene causes a decrease in BDNF secretion and plays a role in impairments in cognition, energy homeostasis, and cardiovascular events. The present study aimed to evaluate the association of polymorphism (rs6265) of the BDNF gene with three quantitative traits simultaneously, namely, intelligence quotient (IQ), body mass index (BMI), and blood pressure (BP). Methods Psychometric, morphometric, and physiometric data of the total participants (N = 246) were collected. WASI-IIINDIA was used to measure cognitive ability. Genotyping was carried out using allele-specific PCR for the rs6265 polymorphism (C196T), and genotypes were determined. Statistical analyses were performed at p < 0.05 significance level using MS-Excel and SigmaPlot. The odds ratio models with a 95% confidence interval were used to test the associations. The used models are co-dominant, recessive, dominant, over-dominant, and additive. Results The allelic frequencies of alleles C and T were 72 and 28%, respectively. Under the dominant genetic model, a significant susceptible association of minor allele T was observed with a lower average verbal comprehensive index (OR = 2.216, p = 0.003, CI (95%) =1.33-3.69), a lower average performance reasoning index (OR = 2.634, p < 0.001, CI (95%) = 1.573-4.41), and a lower average full-scale IQ-4 (OR = 3.159, p < 0.001, CI (95%) = 1.873-5.328). Carriers of Met-alleles were found to have an increased body mass index (OR = 2.538, p < 0.001, CI (95%) = 1.507-4.275), decreased systolic blood pressure (OR = 2.051, p = 0.012, CI (95%) = 1.202-3.502), and decreased diastolic blood pressure (OR = 2.162, p = 0.006, CI (95%) = 1.278-3.657). Under the recessive genetic model, several folds decrease in IQ and BP and an increase in BMI with the presence of the T allele was also detected. Conclusion This novel study may improve our understanding of genetic alterations to the traits and hence be helpful for clinicians and researchers to investigate the diagnostic and prognostic value of this neurotrophic factor.
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Affiliation(s)
- Rafat Fatma
- Human Genetics and Toxicology Laboratory, Section of Genetics, Department of Zoology, Aligarh Muslim University, Aligarh, India
| | - Waseem Chauhan
- Human Genetics and Toxicology Laboratory, Section of Genetics, Department of Zoology, Aligarh Muslim University, Aligarh, India
| | - Mehdi Hayat Shahi
- Interdisciplinary Brain Research Centre, Aligarh Muslim University, Aligarh, India
| | - Mohammad Afzal
- Human Genetics and Toxicology Laboratory, Section of Genetics, Department of Zoology, Aligarh Muslim University, Aligarh, India,*Correspondence: Mohammad Afzal ✉ ; ✉
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Liang Z, Zhang Z, Qi S, Yu J, Wei Z. Effects of a Single Bout of Endurance Exercise on Brain-Derived Neurotrophic Factor in Humans: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. BIOLOGY 2023; 12:biology12010126. [PMID: 36671818 PMCID: PMC9856094 DOI: 10.3390/biology12010126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/24/2022] [Accepted: 01/04/2023] [Indexed: 01/15/2023]
Abstract
We aimed to investigate the impact of a single bout of endurance exercise on the brain-derived neurotrophic factor (BDNF) in humans and analyze how a single bout of endurance exercise impacts the peripheral BDNF types by age group. We performed a systematic literature review by searching PubMed, Elsevier, and Web of Science for studies that included a single bout of endurance exercise in the experimental group and other exercise types in the control group. Eight interventions were included in the study. Overall, a single bout of endurance exercise significantly increased BDNF expression (SMD = 0.30; 95% CI = [0.08, 0.52]; p = 0.001), which was confirmed in the serum BDNF (SMD = 0.30; 95% CI = [0.04, 0.55]; p < 0.001). A non-significant trend was observed in the plasma BDNF (SMD = 0.31; 95% CI = [−0.13, 0.76]; p = 0.017). The serum and plasma BDNF levels significantly increased regardless of age (SMD = 0.35; 95% CI = [0.11, 0.58]; p = 0.004; I2 = 0%). In conclusion, a single bout of endurance exercise significantly elevates BDNF levels in humans without neurological disorders, regardless of age. The serum BDNF is a more sensitive index than the plasma BDNF in evaluating the impact of a single bout of endurance exercise on the BDNF.
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Affiliation(s)
- Zhiqiang Liang
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai 200438, China
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
- Correspondence:
| | - Zheng Zhang
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Shuo Qi
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Jinglun Yu
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Zhen Wei
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
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10
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Brain-derived neurotrophic factor (BDNF): a multifaceted marker in chronic kidney disease. Clin Exp Nephrol 2022; 26:1149-1159. [DOI: 10.1007/s10157-022-02268-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 08/18/2022] [Indexed: 11/03/2022]
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11
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Dingsdale H, Garay SM, Tyson HR, Savory KA, Sumption LA, Kelleher JS, Langley K, Van Goozen S, John RM. Cord serum brain-derived neurotrophic factor levels at birth associate with temperament outcomes at one year. J Psychiatr Res 2022; 150:47-53. [PMID: 35354099 PMCID: PMC9225956 DOI: 10.1016/j.jpsychires.2022.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/31/2022] [Accepted: 03/04/2022] [Indexed: 11/25/2022]
Abstract
Altered serum levels of brain-derived neurotrophic factor (BDNF) are consistently linked with neurological disorders. BDNF is also increasingly implicated in the pathogenesis of neurodevelopmental disorders, particularly those found more frequently in males. At birth, male infants naturally have significantly lower serum BDNF levels (∼10-20% lower than females), which may render them more vulnerable to neurodevelopmental disorders. We previously characterized serum BDNF levels in mothers and their newborn infants as part of the Grown in Wales Study. Here, we analyzed whether cord serum BDNF levels at birth correlate with sex-specific outcomes at one year. The Bayley Scale of Infant Development, Third Edition (BSID-III) and Laboratory Temperament Assessment Battery (Lab-TAB) tasks were used to assess infant behavior and neurodevelopment at 12-14 months (mean ± SD: 13.3 ± 1.6 months; 46% male; n = 56). We found no relationship between serum BDNF levels at birth and BSID-III neurodevelopmental outcomes (cognitive or language), nor with infant behaviors in the Lab-TAB unpredictable mechanical toy or maternal separation tasks. In the sustained attention task, there was a significant positive relationship between serum BDNF and infant negative affect (B = 0.06, p = 0.018) and, for boys only, between serum BDNF and intensity of facial interest (B = 0.03, p = 0.005). However, only the latter remained after correction for multiple testing. This sex-specific association between cord serum BDNF and a parameter of attention at 12-14 months provides some support for the hypothesis that reduced serum BDNF levels at birth are linked to an increased risk for neurodevelopmental disorders.
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Affiliation(s)
- Hayley Dingsdale
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | | | - Hannah R. Tyson
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | | | | | | | - Kate Langley
- School of Psychology, Cardiff University, Cardiff, CF10 3AT, UK
| | - Stephanie Van Goozen
- Cardiff University Centre for Human Developmental Science, School of Psychology, Cardiff University, Cardiff, CF10 3AT, UK
| | - Rosalind M. John
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK,Corresponding author.
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12
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Fleury S, Schnitzer ME, Ledoux-Hutchinson L, Boukhatem I, Bélanger JC, Welman M, Busseuil D, Tardif JC, D’Antono B, Lordkipanidzé M. Clinical Correlates Identify ProBDNF and Thrombo-Inflammatory Markers as Key Predictors of Circulating p75NTR Extracellular Domain Levels in Older Adults. Front Aging Neurosci 2022; 14:821865. [PMID: 35264944 PMCID: PMC8899540 DOI: 10.3389/fnagi.2022.821865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
The p75NTR receptor binds all neurotrophins and is mostly known for its role in neuronal survival and apoptosis. Recently, the extracellular domain (ECD) of p75NTR has been reported in plasma, its levels being dysregulated in numerous neurological diseases. However, the factors associated with p75NTR ECD levels remain unknown. We investigated clinical correlates of plasma p75NTR ECD levels in older adults without clinically manifested neurological disorders. Circulating p75NTR levels were measured by enzyme-linked immunosorbent assay in plasma obtained from participants in the BEL-AGE cohort (n = 1,280). Determinants of plasma p75NTR ECD levels were explored using linear and non-linear statistical models. Plasma p75NTR ECD levels were higher in male participants; were positively correlated with circulating concentrations of pro-brain-derived neurotrophic factor, and inflammatory markers interleukin-6 and CD40 Ligand; and were negatively correlated with the platelet activation marker P-selectin. While most individuals had p75NTR levels ranging from 43 to 358 pg/ml, high p75NTR levels reaching up to 9,000 pg/ml were detectable in a subgroup representing 15% of the individuals studied. In this cohort of older adults without clinically manifested neurological disorders, there was no association between plasma p75NTR ECD levels and cognitive performance, as assessed by the Montreal Cognitive Assessment score. The physiological relevance of high p75NTR ECD levels in plasma warrants further investigation. Further research assessing the source of circulating p75NTR is needed for a deeper understanding of the direction of effect, and to investigate whether high p75NTR ECD levels are predictive biomarkers or consequences of neuropathology.
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Affiliation(s)
- Samuel Fleury
- Research Centre, Montreal Heart Institute, Montreal, QC, Canada
- Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
| | - Mireille E. Schnitzer
- Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
- Department of Social and Preventive Medicine, School of Public Health, Université de Montréal, Montreal, QC, Canada
| | | | - Imane Boukhatem
- Research Centre, Montreal Heart Institute, Montreal, QC, Canada
- Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
| | - Jean-Christophe Bélanger
- Research Centre, Montreal Heart Institute, Montreal, QC, Canada
- Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
| | - Mélanie Welman
- Research Centre, Montreal Heart Institute, Montreal, QC, Canada
| | - David Busseuil
- Research Centre, Montreal Heart Institute, Montreal, QC, Canada
| | - Jean-Claude Tardif
- Research Centre, Montreal Heart Institute, Montreal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montreal, QC, Canada
- Department of Medicine, Montreal Heart Institute, Montreal, QC, Canada
| | - Bianca D’Antono
- Research Centre, Montreal Heart Institute, Montreal, QC, Canada
- Department of Psychology, Faculty of Arts and Sciences, Université de Montréal, Montreal, QC, Canada
- *Correspondence: Bianca D’Antono,
| | - Marie Lordkipanidzé
- Research Centre, Montreal Heart Institute, Montreal, QC, Canada
- Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
- Marie Lordkipanidzé,
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13
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Gravesteijn E, Mensink RP, Smeets ETHC, Plat J. Dietary Macronutrients Do Not Differently Influence Postprandial Serum and Plasma Brain-Derived Neurotrophic Factor Concentrations: A Randomized, Double-Blind, Controlled Cross-Over Trial. Front Neurosci 2022; 15:774915. [PMID: 34992516 PMCID: PMC8724042 DOI: 10.3389/fnins.2021.774915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 12/03/2021] [Indexed: 01/30/2023] Open
Abstract
Objectives: Brain-derived neurotrophic factor (BDNF) plays a role in cognition and metabolism. Specific nutrients can affect fasting BDNF concentrations, which are potentially mediated by insulin and/or glucose. Since macronutrients trigger each a different insulin and glucose response, we examined postprandial effects of meals rich in fat, carbohydrates, or protein on BDNF concentrations. BDNF was analyzed in serum and plasma, since concentration differences can be found between matrices. Methods: Healthy overweight/obese male participants (n = 18) participated in this randomized, double-blind, cross-over trial consisting of three test days with 1 week wash-out periods. Either a high-fat (En% fat, carbohydrates, protein: 52.3, 39.2, 8.0), high-carbohydrate (En% 9.6, 81.5, 8.6) or high-protein meal (En% 10.6, 51.5, 36.9) was consumed on each test day. BDNF concentrations were measured after 0, 60, and 240 min. Glucose and insulin concentrations were measured after 0, 15, 30, 45, 60, 90, 120, and 240 min. Results: BDNF concentrations were higher in serum compared with plasma (P < 0.001). Postprandial BDNF concentrations in serum decreased significantly after the high-fat (P = 0.013) and high-carbohydrate meals (P = 0.040), and showed a trend after the high-protein meal (P = 0.076). No differences were found between meals (P = 0.66). Postprandial BDNF concentrations measured in plasma did not significantly change after the different meals (P = 0.47). As total area under the curve (AUC) for glucose was significantly higher after the high-carbohydrate meal compared with the high-fat (P = 0.003) and high-protein meals (P < 0.001), and the total AUC for insulin was higher after the high-carbohydrate (P < 0.001) and high-protein meals (P < 0.001) compared with the high-fat meal, it seems that acute changes in glucose and insulin do not affect postprandial BDNF concentrations. However, after the high-protein meal, the higher total AUC for glucose correlated with lower serum BDNF concentrations, and a higher maximal increase in glucose correlated with a lower maximal increase in plasma BDNF concentrations. There were no correlations with insulin concentrations after either meal. Conclusion: Serum BDNF concentrations were higher than plasma concentrations. Since postprandial BDNF responses were not different between the meals, we conclude that there is no role for insulin or glucose in regulating postprandial BDNF concentrations. Clinical Trial Registration: [www.ClinicalTrials.gov], identifier [NCT03139890].
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Affiliation(s)
- Elske Gravesteijn
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Ronald P Mensink
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Ellen T H C Smeets
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
| | - Jogchum Plat
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, Netherlands
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14
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Dombi ZB, Szendi I, Burnet PWJ. Brain Derived Neurotrophic Factor and Cognitive Dysfunction in the Schizophrenia-Bipolar Spectrum: A Systematic Review and Meta-Analysis. Front Psychiatry 2022; 13:827322. [PMID: 35686181 PMCID: PMC9170985 DOI: 10.3389/fpsyt.2022.827322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 04/27/2022] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Cognitive impairment is a core feature of disorders on the schizophrenia-bipolar spectrum, i.e., schizophrenia, bipolar disorder, and schizoaffective disorder. Brain-derived neurotrophic factor (BDNF) has been proposed to be a biomarker of cognitive impairment in these disorders as it plays a critical role in neuroplasticity and proposed to mediate some of the psychotropic effects of medication. However, despite numerous studies investigating the association between circulating BDNF and these disorders, no solid conclusions have been drawn regarding its involvement in cognitive impairment. OBJECTIVES The current systematic review and meta-analysis aims to examine blood BDNF levels and cognitive dysfunction in patients on the schizophrenia-bipolar spectrum as well as to evaluate whether circulating BDNF measurements can act as a biomarker for cognitive dysfunction. METHODS Studies were identified by searching Embase and Medline databases for English language articles published in peer-reviewed journals between 2000 January and 2021 June according to the PRISMA guidelines. A total of 815 articles were identified of which 32 met the inclusion criteria for the systematic review - reporting on comparisons between blood BDNF levels and cognitive functions of schizophrenia or bipolar disorder patients versus healthy controls (no studies involving schizoaffective patients were specifically obtained for the time being). Twenty-four of these studies (19 with schizophrenia and 5 with bipolar disorder patients) were eligible to be included in the meta-analysis. RESULTS Our findings indicated that circulating BDNF levels were significantly reduced in patients experiencing an acute episode of schizophrenia or bipolar disorder compared to healthy controls. Cognitive function was also found to be significantly worse in patients, however, correlations between BDNF levels and cognitive impairment were not always detected. Interventions, especially pharmacotherapy seemed to improve certain aspects of cognition and increase circulating BDNF levels. CONCLUSION Circulating BDNF alone does not seem to be a valid biomarker of cognitive dysfunction in patients with disorders on the schizophrenia-bipolar spectrum, owing to several confounding factors. Changes of the circulating levels of BDNF should be evaluated in a wider context of other stress-, immune-, and inflammatory-related factors.
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Affiliation(s)
- Zsófia B Dombi
- Department of Psychiatry, University of Oxford, Oxford, United Kingdom.,Medical Division, Gedeon Richter Plc., Budapest, Hungary
| | - István Szendi
- Department of Psychiatry, Kiskunhalas Semmelweis Hospital, Kiskunhalas, Hungary.,Department of Software Engineering, University of Szeged, Szeged, Hungary
| | - Philip W J Burnet
- Department of Psychiatry, University of Oxford, Oxford, United Kingdom
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15
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Bélanger JC, Bouchard V, Le Blanc J, Starnino L, Welman M, Chabot-Blanchet M, Busseuil D, Chertkow H, D'Antono B, Lordkipanidzé M. Brain-Derived Neurotrophic Factor Mitigates the Association Between Platelet Dysfunction and Cognitive Impairment. Front Cardiovasc Med 2021; 8:739045. [PMID: 34557534 PMCID: PMC8452906 DOI: 10.3389/fcvm.2021.739045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/13/2021] [Indexed: 01/07/2023] Open
Abstract
Background: Platelet hyperactivity is deleterious in coronary artery disease (CAD), requiring lifelong antiplatelet therapy, and is associated with worse cognitive outcomes. Upon activation, platelets release Brain-Derived Neurotrophic Factor (BDNF), a neurotrophin protective against cognitive decline. Given these apparently opposing effects of platelet activation on cognitive health, we investigated whether BDNF levels intercede in the relationship between platelet activation and cognitive function; and whether this relationship is moderated by the presence of CAD. Methods: In this cross-sectional study, 1,280 participants with (n = 673) and without CAD (n = 607) completed the Montreal Cognitive Assessment (MoCA). Plasma BDNF and soluble P-selectin (a marker of platelet activity) levels were assessed using multiplex flow cytometry. Results: In a mediation model, platelet activity was correlated with higher plasma BDNF concentrations (b = 0.53, p < 0.0001). The relationship between sP-selectin and BDNF concentrations was stronger for individuals without CAD (b = 0.71, p < 0.0001) than for CAD participants (b = 0.43, p < 0.0001; pinteraction <0.0001). Higher BDNF concentrations were associated with higher MoCA scores (b = 0.26, p = 0.03). The overall effect of platelet activity on cognitive performance was non-significant (total effect: b = −0.12, p = 0.13), and became significant when accounting for BDNF as a mediating factor (direct effect: b = −0.26, p = 0.01). This resulted in a positive indirect effect of platelet activity (via BDNF) on MoCA scores (b = 0.14, CI 95% 0.02–0.30), that was smaller in CAD participants than in non-CAD participants [Δ −0.07 (95% CI −0.14 to −0.01)]. Conclusions: BDNF released from activated platelets could be a mitigating factor in a negative association between platelet activity and cognitive function.
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Affiliation(s)
- Jean-Christophe Bélanger
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
| | - Véronique Bouchard
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Psychology Department, Faculty of Human Sciences, Université du Québec à Montréal, Montreal, QC, Canada
| | - Jessica Le Blanc
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
| | - Louisia Starnino
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Psychology Department, Faculty of Human Sciences, Université du Québec à Montréal, Montreal, QC, Canada
| | - Mélanie Welman
- Research Center, Montreal Heart Institute, Montreal, QC, Canada
| | | | - David Busseuil
- Research Center, Montreal Heart Institute, Montreal, QC, Canada
| | - Howard Chertkow
- Baycrest Health Sciences, Rotman Research Institute, University of Toronto, Toronto, ON, Canada.,Department of Medicine (Neurology), University of Toronto, Toronto, ON, Canada
| | - Bianca D'Antono
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Psychology Department, Faculty of Arts and Sciences, Université de Montréal, Montreal, QC, Canada
| | - Marie Lordkipanidzé
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
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16
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Collins JM, Hill E, Bindoff A, King AE, Alty J, Summers MJ, Vickers JC. Association Between Components of Cognitive Reserve and Serum BDNF in Healthy Older Adults. Front Aging Neurosci 2021; 13:725914. [PMID: 34408648 PMCID: PMC8365170 DOI: 10.3389/fnagi.2021.725914] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 07/13/2021] [Indexed: 11/13/2022] Open
Abstract
Background: The brain-derived neurotrophic factor (BDNF) protein has been shown to have a prominent role in neuron survival, growth, and function in experimental models, and the BDNF Val66Met polymorphism which regulates its expression has been linked to resilience toward the effects of aging on cognition. Cognitively stimulating activity is linked to both increased levels of BDNF in the brain, and protection against age-related cognitive decline. The aim of this study was to investigate the associations between serum BDNF levels, the BDNF Val66Met genotype, and components of cognitive reserve in early and mid-life, measured with the Lifetime of Experiences Questionnaire (LEQ). Methods: Serum BDNF levels were measured cross-sectionally in 156 participants from the Tasmanian Healthy Brain Project (THBP) cohort, a study examining the potential benefits of older adults engaging in a university-level education intervention. Multiple linear regression was used to estimate serum BDNF's association with age, education, gender, BDNF Val66Met genotype, later-life university-level study, and cognitively stimulating activities measured by the LEQ. Results: Serum BDNF in older adults was associated with early life education and training, increasing 0.007 log(pg/ml) [95%CI 0.001, 0.012] per unit on the LEQ subscale. Conversely, education and training in mid-life were associated with a -0.007 log(pg/ml) [-0.012, -0.001] decrease per unit on the LEQ subscale. Serum BDNF decreased with age (-0.008 log(pg/ml) [-0.015, -0.001] per year), and male gender (-0.109 log(pg/ml) [-0.203, -0.015]), but mean differences between the BDNF Val66Met polymorphisms were not significant (p = 0.066). All effect sizes were small, with mid-life education and training having the largest effect size ( η p 2 = 0.044). Conclusion: Education in both early and mid-life explained small but significant amounts of variance in serum BDNF levels, more than age or gender. These effects were opposed and independent, suggesting that education at different stages of life may be associated with different cognitive and neural demands. Education at different stages of life may be important covariates when estimating associations between other exposures and serum BDNF.
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Affiliation(s)
- Jessica M Collins
- Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, TAS, Australia
| | - Edward Hill
- Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, TAS, Australia
| | - Aidan Bindoff
- Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, TAS, Australia
| | - Anna E King
- Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, TAS, Australia
| | - Jane Alty
- Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, TAS, Australia
| | - Mathew J Summers
- Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, TAS, Australia.,School of Health and Behavioral Sciences, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - James C Vickers
- Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, TAS, Australia
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17
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Li Y, Huang Y, Cheng X, He Y, Hu X. Whole body hypoxic preconditioning-mediated multiorgan protection in db/db mice via nitric oxide-BDNF-GSK-3β-Nrf2 signaling pathway. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2021; 25:281-296. [PMID: 34187947 PMCID: PMC8255126 DOI: 10.4196/kjpp.2021.25.4.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/18/2020] [Accepted: 09/19/2020] [Indexed: 11/15/2022]
Abstract
The beneficial effects of hypoxic preconditioning are abolished in the diabetes. The present study was designed to investigate the protective effects and mechanisms of repeated episodes of whole body hypoxic preconditioning (WBHP) in db/db mice. The protective effects of preconditioning were explored on diabetesinduced vascular dysfunction, cognitive impairment and ischemia-reperfusion (IR)-induced increase in myocardial injury. Sixteen-week old db/db (diabetic) and C57BL/6 (non-diabetic) mice were employed. There was a significant impairment in cognitive function (Morris Water Maze test), endothelial function (acetylcholineinduced relaxation in aortic rings) and a significant increase in IR-induced heart injury (Langendorff apparatus) in db/db mice. WBHP stimulus was given by exposing mice to four alternate cycles of low (8%) and normal air O2 for 10 min each. A single episode of WBHP failed to produce protection; however, two and three episodes of WBHP significantly produced beneficial effects on the heart, brain and blood vessels. There was a significant increase in the levels of brain-derived neurotrophic factor (BDNF) and nitric oxide (NO) in response to 3 episodes of WBHP. Moreover, pretreatment with the BDNF receptor, TrkB antagonist (ANA-12) and NO synthase inhibitor (LNAME) attenuated the protective effects imparted by three episodes of WBHP. These pharmacological agents abolished WBHP-induced restoration of p-GSK-3β/GSK-3β ratio and Nrf2 levels in IR-subjected hearts. It is concluded that repeated episodes of WHBP attenuate cognitive impairment, vascular dysfunction and enhancement in IRinduced myocardial injury in diabetic mice be due to increase in NO and BDNF levels that may eventually activate GSK-3β and Nrf2 signaling pathway to confer protection.
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Affiliation(s)
- Yuefang Li
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
| | - Yan Huang
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
| | - Xi Cheng
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
| | - Youjun He
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
| | - Xin Hu
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
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18
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Nicolini C, Nelson AJ. Current Methodological Pitfalls and Caveats in the Assessment of Exercise-Induced Changes in Peripheral Brain-Derived Neurotrophic Factor: How Result Reproducibility Can Be Improved. FRONTIERS IN NEUROERGONOMICS 2021; 2:678541. [PMID: 38235217 PMCID: PMC10790889 DOI: 10.3389/fnrgo.2021.678541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/04/2021] [Indexed: 01/19/2024]
Abstract
Neural mechanisms, such as enhanced neuroplasticity within the motor system, underpin exercise-induced motor improvements. Being a key mediator of motor plasticity, brain-derived neurotrophic factor (BDNF) is likely to play an important role in mediating exercise positive effects on motor function. Difficulties in assessing brain BDNF levels in humans have drawn attention to quantification of blood BDNF and raise the question of whether peripheral BDNF contributes to exercise-related motor improvements. Methodological and non-methodological factors influence measurements of blood BDNF introducing a substantial variability that complicates result interpretation and leads to inconsistencies among studies. Here, we discuss methodology-related issues and approaches emerging from current findings to reduce variability and increase result reproducibility.
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Affiliation(s)
| | - Aimee J. Nelson
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
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19
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Pedard M, Quirié A, Tessier A, Garnier P, Totoson P, Demougeot C, Marie C. A reconciling hypothesis centred on brain-derived neurotrophic factor to explain neuropsychiatric manifestations in rheumatoid arthritis. Rheumatology (Oxford) 2021; 60:1608-1619. [PMID: 33313832 DOI: 10.1093/rheumatology/keaa849] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/27/2020] [Accepted: 11/23/2020] [Indexed: 12/12/2022] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune chronic inflammatory disease characterized by synovitis leading to joint destruction, pain and disability. Despite efficient antirheumatic drugs, neuropsychiatric troubles including depression and cognitive dysfunction are common in RA but the underlying mechanisms are unclear. However, converging evidence strongly suggests that deficit in brain-derived neurotrophic factor (BDNF) signalling contributes to impaired cognition and depression. Therefore, this review summarizes the current knowledge on BDNF in RA, proposes possible mechanisms linking RA and brain BDNF deficiency including neuroinflammation, cerebral endothelial dysfunction and sedentary behaviour, and discusses neuromuscular electrical stimulation as an attractive therapeutic option.
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Affiliation(s)
- Martin Pedard
- INSERM U1093, Univ. Bourgogne Franche-Comté, Dijon, F-21000, France
| | - Aurore Quirié
- INSERM U1093, Univ. Bourgogne Franche-Comté, Dijon, F-21000, France
| | - Anne Tessier
- INSERM U1093, Univ. Bourgogne Franche-Comté, Dijon, F-21000, France
| | - Philippe Garnier
- INSERM U1093, Univ. Bourgogne Franche-Comté, Dijon, F-21000, France
| | - Perle Totoson
- EA4267 PEPITE, FHU INCREASE, Univ. Bourgogne Franche-Comté, Besançon, F-25030, France
| | - Céline Demougeot
- EA4267 PEPITE, FHU INCREASE, Univ. Bourgogne Franche-Comté, Besançon, F-25030, France
| | - Christine Marie
- INSERM U1093, Univ. Bourgogne Franche-Comté, Dijon, F-21000, France
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20
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Hellgren G, Lundgren P, Pivodic A, Löfqvist C, Nilsson AK, Ley D, Sävman K, Smith LE, Hellström A. Decreased Platelet Counts and Serum Levels of VEGF-A, PDGF-BB, and BDNF in Extremely Preterm Infants Developing Severe ROP. Neonatology 2021; 118:18-27. [PMID: 33611321 PMCID: PMC10539685 DOI: 10.1159/000512282] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 09/02/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Thrombocytopenia has been identified as an independent risk factor for retinopathy of prematurity (ROP), although underlying mechanisms are unknown. In this study, the association of platelet count and serum platelet-derived factors with ROP was investigated. METHODS Data for 78 infants born at gestational age (GA) <28 weeks were included. Infants were classified as having no/mild ROP or severe ROP. Serum levels of vascular endothelial growth factor A, platelet-derived growth factor BB, and brain-derived neurotrophic factor were measured in serum samples collected from birth until postmenstrual age (PMA) 40 weeks. Platelet counts were obtained from samples taken for clinical indication. RESULTS Postnatal platelet counts and serum concentrations of the 3 growth factors followed the same postnatal pattern, with lower levels in infants developing severe ROP at PMA 32 and 36 weeks (p < 0.05-0.001). With adjustment for GA, low platelet counts and low serum concentrations of all 3 factors at PMA 32 weeks were significantly associated with severe ROP. Serum concentrations of all 3 factors also strongly correlated with platelet count (p < 0.001). CONCLUSION In this article, we show that ROP, platelet counts, and specific pro-angiogenic factors correlate. These data suggest that platelet-released factors might be involved in the regulation of retinal and systemic angiogenesis after extremely preterm birth. Further investigations are needed.
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Affiliation(s)
- Gunnel Hellgren
- Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,
- The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,
| | - Pia Lundgren
- The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Aldina Pivodic
- The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Chatarina Löfqvist
- The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anders K Nilsson
- The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - David Ley
- Department of Clinical Sciences Lund, Paediatrics, Lund University, Skåne University Hospital, Lund, Sweden
| | - Karin Sävman
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Region Västra Götaland, Department of Neonatology, The Queen Silvia Children's Hospital, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Lois E Smith
- Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ann Hellström
- The Sahlgrenska Centre for Pediatric Ophthalmology Research, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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21
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Fleury S, Boukhatem I, Le Blanc J, Welman M, Lordkipanidzé M. Tissue-Specificity of Antibodies Raised Against TrkB and p75 NTR Receptors; Implications for Platelets as Models of Neurodegenerative Diseases. Front Immunol 2021; 12:606861. [PMID: 33643311 PMCID: PMC7905091 DOI: 10.3389/fimmu.2021.606861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 01/04/2021] [Indexed: 11/13/2022] Open
Abstract
Platelets and neurons share many similarities including comparable secretory granule types with homologous calcium-dependent secretory mechanisms as well as internalization, sequestration and secretion of many neurotransmitters. Thus, platelets present a high potential to be used as peripheral biomarkers to reflect neuronal pathologies. The brain-derived neurotrophic factor (BDNF) acts as a neuronal growth factor involved in learning and memory through the binding of two receptors, the tropomyosin receptor kinase B (TrkB) and the 75 kDa pan-neurotrophic receptor (p75NTR). In addition to its expression in the central nervous system, BDNF is found in much greater quantities in blood circulation, where it is largely stored within platelets. Levels 100- to 1,000-fold those of neurons make platelets the most important peripheral reservoir of BDNF. This led us to hypothesize that platelets would express canonical BDNF receptors, i.e., TrkB and p75NTR, and that the receptors on platelets would bear significant resemblance to the ones found in the brain. However, herein we report discrepancies regarding detection of these receptors using antibody-based assays, with antibodies displaying important tissue-specificity. The currently available antibodies raised against TrkB and p75NTR should therefore be used with caution to study platelets as models for neurological disorders. Rigorous characterization of antibodies and bioassays appears critical to understand the interplay between platelet and neuronal biology of BDNF.
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Affiliation(s)
- Samuel Fleury
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
| | - Imane Boukhatem
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
| | - Jessica Le Blanc
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
| | - Mélanie Welman
- Research Center, Montreal Heart Institute, Montreal, QC, Canada
| | - Marie Lordkipanidzé
- Research Center, Montreal Heart Institute, Montreal, QC, Canada.,Faculty of Pharmacy, Université de Montréal, Montreal, QC, Canada
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22
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Dingsdale H, Nan X, Garay SM, Mueller A, Sumption LA, Chacón-Fernández P, Martinez-Garay I, Ghevaert C, Barde YA, John RM. The placenta protects the fetal circulation from anxiety-driven elevations in maternal serum levels of brain-derived neurotrophic factor. Transl Psychiatry 2021; 11:62. [PMID: 33462179 PMCID: PMC7813890 DOI: 10.1038/s41398-020-01176-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 11/16/2020] [Accepted: 11/30/2020] [Indexed: 01/30/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) plays crucial roles in brain function. Numerous studies report alterations in BDNF levels in human serum in various neurological conditions, including mood disorders such as depression. However, little is known about BDNF levels in the blood during pregnancy. We asked whether maternal depression and/or anxiety during pregnancy were associated with altered serum BDNF levels in mothers (n = 251) and their new-born infants (n = 212). As prenatal exposure to maternal mood disorders significantly increases the risk of neurological conditions in later life, we also examined the possibility of placental BDNF transfer by developing a new mouse model. We found no association between maternal symptoms of depression and either maternal or infant cord blood serum BDNF. However, maternal symptoms of anxiety correlated with significantly raised maternal serum BDNF exclusively in mothers of boys (r = 0.281; P = 0.005; n = 99). Serum BDNF was significantly lower in male infants than female infants but neither correlated with maternal anxiety symptoms. Consistent with this observation, we found no evidence for BDNF transfer across the placenta. We conclude that the placenta protects the developing fetus from maternal changes in serum BDNF that could otherwise have adverse consequences for fetal development.
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Affiliation(s)
- Hayley Dingsdale
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Xinsheng Nan
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Samantha M Garay
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Annett Mueller
- Department of Haematology, University of Cambridge, Cambridge, CB2 0PT, UK
| | - Lorna A Sumption
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Pedro Chacón-Fernández
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
- Hospital Universitario Virgen Macarena-FISEVI, University of Seville, E41009, Seville, Spain
| | | | - Cedric Ghevaert
- Department of Haematology, University of Cambridge, Cambridge, CB2 0PT, UK
| | - Yves-Alain Barde
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Rosalind M John
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK.
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23
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Curcumin protects rat hippocampal neurons against pseudorabies virus by regulating the BDNF/TrkB pathway. Sci Rep 2020; 10:22204. [PMID: 33335121 PMCID: PMC7746732 DOI: 10.1038/s41598-020-78903-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 12/01/2020] [Indexed: 12/18/2022] Open
Abstract
Pseudorabies virus (PRV) infection can elicit nervous system disorders. Curcumin has been reported to have neuroprotective effects. However, whether curcumin can protect neurons against PRV infection and the underlying mechanisms remain unclear. In the present study, for the first time, the protective effects of curcumin against PRV-induced oxidative stress, apoptosis, and mitochondrial dysfunction in rat hippocampal neurons and the brain-derived neurotrophic factor (BDNF)/tropomyosin-related kinase B (TrkB) pathway were investigated. Results indicated that PRV with a titer of 3.06 × 106 TCID50 (50% tissue culture infective dose) induced oxidative damage of hippocampal neurons 2 h post-infection and that 10 μM curcumin improved the viability of PRV-infected hippocampal neurons. Blocking the BDNF/TrkB pathway reversed the neuroprotective effects of curcumin, which were imparted by decreasing the PRV-induced upregulation of nitric oxide synthase expression, repressing the PRV-activated mitochondrial apoptotic pathway, and mitochondrial dysfunction. To conclude, curcumin exhibited a neuroprotective role against PRV infection by upregulating the BDNF/TrkB pathway. This study provides insight into the anti-PRV neuroprotective application of curcumin and the underlying mechanism in the prophylaxis and treatment of neurological disorders caused by PRV infection.
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24
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Wu ZW, Shi H, Chen DC, Chen S, Xiu MH, Zhang XY. BDNF serum levels and cognitive improvement in drug-naive first episode patients with schizophrenia: A prospective 12-week longitudinal study. Psychoneuroendocrinology 2020; 122:104879. [PMID: 33049658 DOI: 10.1016/j.psyneuen.2020.104879] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 09/13/2020] [Accepted: 09/14/2020] [Indexed: 12/11/2022]
Abstract
Abnormal brain-derived neurotrophic factor (BDNF) levels are involved in cognitive decline in patients with schizophrenia. The role of atypical antipsychotic risperidone in improving cognitive function remains unclear. The study aimed to investigate the effect of risperidone monotherapy on cognitive impairment in drug-naïve first-episode (DNFE) patients with schizophrenia and whether BDNF levels were correlated to the improvement of cognition. 354 DNFE patients and 152 healthy controls were recruited, and we compared their serum BDNF levels and cognition shown on the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). High and low BDNF subgroups were defined by median split. Then, 211 patients were treated with risperidone monotherapy for 12 weeks, and their serum BDNF levels and cognition were measured again after treatment. DNFE patients had poorer cognitive functions and lower BDNF levels compared to controls. Lower BDNF levels were correlated with delayed memory in DNFE patients with high baseline BDNF levels. After 12 weeks of treatment, risperidone significantly improved immediate memory, delayed memory and RBANS total scores and BDNF levels were slightly increased. In patients with low-BDNF, BDNF levels were significantly increased after risperidone treatment, while in patients with high-BDNF, BDNF levels were significantly decreased. In addition, baseline BDNF levels were associated with improvement of delayed memory and were a prognostic factor for the improvement of the delayed memory and RBANS total score in patients with high-BDNF. Our result suggests risperidone treatment can partially improve certain domains of the cognitive impairment and baseline BDNF levels are related to cognitive response to risperidone in DNFE patients with schizophrenia.
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Affiliation(s)
- Zhi Wei Wu
- Department of Psychiatry, Shenzhen Kangning Hospital, Shenzhen, Guangdong, China; Shenzhen Mental Health Center, Shenzhen, Guangdong, China
| | - Hui Shi
- Department of clinial psychology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Da Chun Chen
- Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
| | - Song Chen
- Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
| | - Mei Hong Xiu
- Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China.
| | - Xiang Yang Zhang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
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25
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Le Blanc J, Fleury S, Boukhatem I, Bélanger JC, Welman M, Lordkipanidzé M. Platelets Selectively Regulate the Release of BDNF, But Not That of Its Precursor Protein, proBDNF. Front Immunol 2020; 11:575607. [PMID: 33324399 PMCID: PMC7723927 DOI: 10.3389/fimmu.2020.575607] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 10/21/2020] [Indexed: 12/12/2022] Open
Abstract
Background Brain-derived neurotrophic factor (BDNF) plays a role in synaptic plasticity and neuroprotection. BDNF has well-established pro-survival effects, whereas its precursor protein, proBDNF, induces apoptosis. Thus, it has been suggested that the proBDNF/BDNF ratio could be an indicator of neuronal health. Access to neurons is, understandably, limited. Because of their similarities, platelets have been put forward as a non-invasive biomarker of neuronal health; indeed, they store large quantities of BDNF and can release it into circulation upon activation, similarly to neurons. However, whether platelets also express the precursor proBDNF protein remains unknown. We therefore sought to characterize proBDNF levels in human platelets and plasma. Methods The presence of proBDNF was assessed by immunoblotting, cell fractionation, flow cytometry, and confocal microscopy in washed platelets from 10 healthy volunteers. Platelets from 20 independent healthy volunteers were activated with several classical agonists and the release of BDNF and proBDNF into plasma was quantified by ELISA. Results Platelets expressed detectable levels of proBDNF (21 ± 13 fmol/250 x 106 platelets). ProBDNF expression was mainly localized in the intracellular compartment. The proBDNF to BDNF molar ratio was ~1:5 in platelets and 10:1 in plasma. In stark contrast to the release of BDNF during platelet activation, intraplatelet and plasma concentrations of proBDNF remained stable following stimulation with classical platelet agonists, consistent with non-granular expression. Conclusions Platelets express both the mature and the precursor form of BDNF. Whether the intraplatelet proBDNF to BDNF ratio could be used as a non-invasive biomarker of cognitive health warrants further investigation.
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Affiliation(s)
- Jessica Le Blanc
- Faculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.,Research Center, Montreal Heart Institute, Montréal, QC, Canada
| | - Samuel Fleury
- Faculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.,Research Center, Montreal Heart Institute, Montréal, QC, Canada
| | - Imane Boukhatem
- Faculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.,Research Center, Montreal Heart Institute, Montréal, QC, Canada
| | - Jean-Christophe Bélanger
- Faculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.,Research Center, Montreal Heart Institute, Montréal, QC, Canada
| | - Mélanie Welman
- Research Center, Montreal Heart Institute, Montréal, QC, Canada
| | - Marie Lordkipanidzé
- Faculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.,Research Center, Montreal Heart Institute, Montréal, QC, Canada
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26
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Reduced plasma Fetuin-A is a promising biomarker of depression in the elderly. Eur Arch Psychiatry Clin Neurosci 2020; 270:901-910. [PMID: 31863164 DOI: 10.1007/s00406-019-01090-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 12/11/2019] [Indexed: 12/20/2022]
Abstract
Depression affects 7% of the elderly population, and it often remains misdiagnosed or untreated. Peripheral biomarkers might aid clinicians by allowing more accurate and well-timed recognition of the disease. We sought to determine if plasma protein levels predict the severity of depressive symptomatology or distinguish patients from healthy individuals. The severity of depressive symptoms and global cognitive functioning were assessed by the Geriatric Depression Scale (GDS) and Mini-Mental State Examination (MMSE) in 152 elderly subjects, 76 of which with major depressive disorder (MDD). Plasma levels of 24 proteins were measured by multiplexing and analyzed as continuous predictors or dichotomized using the median value. The association between individual plasma proteins and MDD risk or depressive symptoms severity was investigated using multiple logistic and linear regressions including relevant covariates. Sensitivity analyses were performed excluding cognitively impaired individuals or non-acute patients with MDD. After adjusting for possible confounders and false discovery rate (FDR) correction, we found lower Fetuin-A levels in MDD patients vs. controls (pFDR = 1.95 × 10-6). This result was confirmed by the sensitivity and dichotomized analyses. Lower prolactin (PRL) levels predicted more severe depressive symptoms in acute MDD patients (pFDR = 0.024). Fetuin-A is a promising biomarker of MDD in the elderly as this protein was negatively associated with the disorder in our sample, regardless of the global cognitive functioning. Lower PRL levels may be a peripheral signature of impaired neuroprotective processes and serotoninergic neurotransmission in more severely depressed patients.
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27
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Tarassova O, Ekblom MM, Moberg M, Lövdén M, Nilsson J. Peripheral BDNF Response to Physical and Cognitive Exercise and Its Association With Cardiorespiratory Fitness in Healthy Older Adults. Front Physiol 2020; 11:1080. [PMID: 32982796 PMCID: PMC7477111 DOI: 10.3389/fphys.2020.01080] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 08/05/2020] [Indexed: 11/13/2022] Open
Abstract
Physical exercise (PE) has been shown to improve brain function via multiple neurobiological mechanisms promoting neuroplasticity. Cognitive exercise (CE) combined with PE may show an even greater effect on cognitive function. Brain-derived neurotrophic factor (BDNF) is important for neuroplastic signaling, may reduce with increasing age, and is confounded by fitness. The source and physiological role of human peripheral blood BDNF in plasma (pBDNF) is thought to differ from that in serum (sBDNF), and it is not yet known how pBDNF and sBDNF respond to PE and CE. A training intervention study in healthy older adults investigated the effects of acute (35 min) and prolonged (12 weeks, 30 sessions) CE and PE, both alone and in combination, on pBDNF and sBDNF. Cross-sectional associations between baseline pBDNF, sBDNF and cardiorespiratory fitness (CRF) were also investigated. Participants (65-75 years) were randomly assigned to four groups and prescribed either CE plus 35 min of rest (n = 21, 52% female); PE [performed on a cycle ergometer at moderate intensity (65-75% of individual maximal heart rate)] plus 35 min of rest (n = 27, 56% female); CE plus PE (n = 24, 46% female), or PE plus CE (n = 25, 52% female). Groups were tested for CRF using a maximal treadmill ergometer test (VO2peak); BDNF levels (collected 48 h after CRF) during baseline, after first exercise (PE or CE) and after second exercise (PE, CE or rest); and cognitive ability pre and post 12-week training. At both pre and post, pBDNF increased after CE and PE (up to 222%), and rest (∼67%), whereas sBDNF increased only after PE (up to 18%) and returned to baseline after rest. Acute but not prolonged PE increased both pBDNF and sBDNF. CE induced acute changes in pBDNF only. Baseline pBDNF was positively associated with baseline sBDNF (n = 93, r = 0.407, p < 0.001). No changes in CRF were found in any of the groups. Baseline CRF did not correlate with baseline BDNF. Even though baseline pBDNF and sBDNF were associated, patterns of changes in pBDNF and sBDNF in response to exercise were explicitly different. Further experimental scrutiny is needed to clarify the biological mechanisms of these results.
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Affiliation(s)
- Olga Tarassova
- The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - Maria M Ekblom
- The Swedish School of Sport and Health Sciences, Stockholm, Sweden.,Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Marcus Moberg
- The Swedish School of Sport and Health Sciences, Stockholm, Sweden
| | - Martin Lövdén
- Aging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden.,Department of Psychology, Gothenburg University, Gothenburg, Sweden
| | - Jonna Nilsson
- The Swedish School of Sport and Health Sciences, Stockholm, Sweden.,Aging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden
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28
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Kojima H, Raut B, Chen LJ, Nagai N, Abe T, Kaji H. A 3D Printed Self-Sustainable Cell-Encapsulation Drug Delivery Device for Periocular Transplant-Based Treatment of Retinal Degenerative Diseases. MICROMACHINES 2020; 11:mi11040436. [PMID: 32326233 PMCID: PMC7231335 DOI: 10.3390/mi11040436] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/15/2020] [Accepted: 04/18/2020] [Indexed: 01/15/2023]
Abstract
Self-sustainable release of brain-derived neurotrophic factor (BDNF) to the retina using minimally invasive cell-encapsulation devices is a promising approach to treat retinal degenerative diseases (RDD). Herein, we describe such a self-sustainable drug delivery device with human retinal pigment epithelial (ARPE-19) cells (cultured on collagen coated polystyrene (PS) sheets) enclosed inside a 3D printed semi-porous capsule. The capsule was 3D printed with two photo curable polymers: triethylene glycol dimethacrylate (TEGDM) and polyethylene glycol dimethylacrylate (PEGDM). The capsule's semi-porous membrane (PEGDM) could serve three functions: protecting the cells from body's immune system by limiting diffusion (5.97 ± 0.11%) of large molecules like immunoglobin G (IgG)(150 kDa); helping the cells to survive inside the capsule by allowing diffusion (43.20 ± 2.16%) of small molecules (40 kDa) like oxygen and necessary nutrients; and helping in the treatment of RDD by allowing diffusion of cell-secreted BDNF to the outside environment. In vitro results showed a continuous BDNF secretion from the device for at least 16 days, demonstrating future potential of the cell-encapsulation device for the treatment of RDD in a minimally invasive and self-sustainable way through a periocular transplant.
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Affiliation(s)
- Hideto Kojima
- Department of Finemechanics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki, Aoba-ku, Sendai 980-8579, Japan; (H.K.); (B.R.); (L.-J.C.)
| | - Bibek Raut
- Department of Finemechanics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki, Aoba-ku, Sendai 980-8579, Japan; (H.K.); (B.R.); (L.-J.C.)
| | - Li-Jiun Chen
- Department of Finemechanics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki, Aoba-ku, Sendai 980-8579, Japan; (H.K.); (B.R.); (L.-J.C.)
| | - Nobuhiro Nagai
- Division of Clinical Cell Therapy, United Centers for Advanced Research and Translational Medicine (ART), Tohoku University Graduate School of Medicine, 2-1 Seiryo, Aoba-ku, Sendai 980-8575, Japan; (N.N.); (T.A.)
| | - Toshiaki Abe
- Division of Clinical Cell Therapy, United Centers for Advanced Research and Translational Medicine (ART), Tohoku University Graduate School of Medicine, 2-1 Seiryo, Aoba-ku, Sendai 980-8575, Japan; (N.N.); (T.A.)
| | - Hirokazu Kaji
- Department of Finemechanics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki, Aoba-ku, Sendai 980-8579, Japan; (H.K.); (B.R.); (L.-J.C.)
- Department of Biomedical Engineering, Graduate School of Biomedical Engineering, Tohoku University, 6-6-01 Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Correspondence: ; Tel.: +81-22-795-4249
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29
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Acute increases in brain-derived neurotrophic factor in plasma following physical exercise relates to subsequent learning in older adults. Sci Rep 2020; 10:4395. [PMID: 32157099 PMCID: PMC7064503 DOI: 10.1038/s41598-020-60124-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 02/06/2020] [Indexed: 02/08/2023] Open
Abstract
Multidomain lifestyle interventions represents a promising strategy to counteract cognitive decline in older age. Brain-derived neurotrophic factor (BDNF) is essential for experience-dependent plasticity and increases following physical exercise, suggesting that physical exercise may facilitate subsequent learning. In a randomized-controlled trial, healthy older adults (65–75 years) completed a 12-week behavioral intervention that involved either physical exercise immediately before cognitive training (n = 25; 13 females), physical exercise immediately after cognitive training (n = 24; 11 females), physical exercise only (n = 27; 15 females), or cognitive training only (n = 21; 12 females). We hypothesized that cognition would benefit more from cognitive training when preceded as opposed to followed by physical exercise and that the relationship between exercise-induced increases in peripheral BDNF and cognitive training outcome would be greater when cognitive training is preceded by physical exercise. Greater increases of plasma BDNF were associated with greater cognitive training gains on trained task paradigms, but only when such increases preceded cognitive training (ß = 0.14, 95% CI [0.04, 0.25]). Average cognitive training outcome did not differ depending on intervention order (ß = 0.05, 95% CI [−0.10, 0.20]). The study provides the first empirical support for a time-critical but advantageous role for post-exercise increases in peripheral BDNF for learning at an interindividual level in older adults, with implications for future multidomain lifestyle interventions.
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30
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TrkB neurotrophin receptor at the core of antidepressant effects, but how? Cell Tissue Res 2019; 377:115-124. [DOI: 10.1007/s00441-018-02985-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 12/14/2018] [Indexed: 01/19/2023]
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Neugebauer K, Hammans C, Wensing T, Kumar V, Grodd W, Mevissen L, Sternkopf MA, Novakovic A, Abel T, Habel U, Nickl-Jockschat T. Nerve Growth Factor Serum Levels Are Associated With Regional Gray Matter Volume Differences in Schizophrenia Patients. Front Psychiatry 2019; 10:275. [PMID: 31105606 PMCID: PMC6498747 DOI: 10.3389/fpsyt.2019.00275] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 04/10/2019] [Indexed: 12/24/2022] Open
Abstract
Numerous neuroimaging studies have revealed structural brain abnormalities in schizophrenia patients. There is emerging evidence that dysfunctional nerve growth factor (NGF) signaling may contribute to structural brain alterations found in these patients. In this pilot study, we investigated whether there was a correlation between NGF serum levels and gray matter volume (GMV) in schizophrenia patients. Further, we investigated whether there was an overlap between the correlative findings and cross-sectional GMV differences between schizophrenia patients (n = 18) and healthy controls (n = 19). Serum NGF was significantly correlated to GMV in the left prefrontal lobe, the left midcingulate cortex, and the brainstem in schizophrenia patients. However, we did not find any correlations of NGF serum levels with GMV in healthy controls. Schizophrenia patients showed smaller GMV than healthy controls in brain regions located in the bilateral limbic system, bilateral parietal lobe, bilateral insula, bilateral primary auditory cortex, left frontal lobe, and bilateral occipital regions. In a conjunction analysis, GMV in the left midcingulate cortex (MCC) appears negatively correlated to NGF serum levels in the group of schizophrenia patients and also to be reduced compared to healthy controls. These results suggest an increased vulnerability of schizophrenia patients to changes in NGF levels compared to healthy controls and support a role for NGF signaling in the pathophysiology of schizophrenia. As our pilot study is exploratory in nature, further studies enrolling larger sample sizes will be needed to further corroborate our findings and to investigate the influence of additional covariates.
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Affiliation(s)
- Kristina Neugebauer
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance, Jülich, Germany
| | - Christine Hammans
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance, Jülich, Germany
| | - Tobias Wensing
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Vinod Kumar
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance, Jülich, Germany.,Max-Planck-Institute for Biological Cybernetics, Tübingen, Germany
| | - Wolfgang Grodd
- Max-Planck-Institute for Biological Cybernetics, Tübingen, Germany
| | - Lea Mevissen
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance, Jülich, Germany
| | - Melanie A Sternkopf
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance, Jülich, Germany
| | - Ana Novakovic
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance, Jülich, Germany
| | - Ted Abel
- Iowa Neuroscience Institute, University of Iowa, Iowa City, IA, United States
| | - Ute Habel
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance, Jülich, Germany
| | - Thomas Nickl-Jockschat
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany.,Jülich-Aachen Research Alliance, Jülich, Germany.,Iowa Neuroscience Institute, University of Iowa, Iowa City, IA, United States.,Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City, IA, United States
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Walsh JJ, Tschakovsky ME. Exercise and circulating BDNF: Mechanisms of release and implications for the design of exercise interventions. Appl Physiol Nutr Metab 2018; 43:1095-1104. [PMID: 29775542 DOI: 10.1139/apnm-2018-0192] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Engagement in regular bouts of exercise confers numerous positive effects on brain health across the lifespan. Acute bouts of exercise transiently improve cognitive function, while long-term exercise training stimulates brain plasticity, improves brain function, and helps to stave off neurological disease. The action of brain-derived neurotrophic factor (BDNF) is a candidate mechanism underlying these exercise-induced benefits and is the subject of considerable attention in the exercise-brain health literature. It is well established that acute exercise increases circulating levels of BDNF and numerous studies have sought to characterize this response for the purpose of improving brain health. Despite the interest in BDNF responses to exercise, little focus has been given to understanding the sources and mechanisms that underlie this response for the purpose of deliberately increasing circulating levels of BDNF. Here we review evidence to support that exploiting these mechanisms of BDNF release can help to optimize brain plasticity outcomes via exercise interventions, which could be especially relevant in the context of multimodal training (i.e., exercise and cognitive stimulation). Therefore, the purpose of this paper is to review the candidate sources of BDNF during exercise and the mechanisms of release. As well, we discuss strategies for maximizing BDNF responses to exercise, and propose novel research directions for advancing our understanding of these mechanisms.
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Affiliation(s)
- Jeremy J Walsh
- a Children's Hospital of Eastern Ontario Research Institute, Ottawa, ON K1H 8L1, Canada
| | - Michael E Tschakovsky
- b School of Kinesiology and Health Studies, Queen's University, Kingston, ON K7L 3N6, Canada
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Tharmaratnam T, Tabobondung T, Tabobondung T, Doherty S. Synergistic effects of brain-derived neurotrophic factor (BDNF) and exercise intensity on memory in the adolescent brain: a commentary. Environ Health Prev Med 2018; 23:12. [PMID: 29614951 PMCID: PMC5883591 DOI: 10.1186/s12199-018-0701-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 03/20/2018] [Indexed: 11/10/2022] Open
Abstract
This commentary highlights the recently published study by Jeon and Ha (Environ Health Prev Med 22:27, 2017) examining the effects of exercise intensity and brain-derived neurotrophic factor (BDNF) on memory in adolescents. This 12-week training study elicited increases in BDNF and improvements in working memory during moderate- and high-intensity exercise, which may have been achieved through improved brain tissue oxygenation, nutrient delivery, and BDNF mRNA expression. These improvements highlight the positive neuroendocrinological effects of BDNF and its role as a potential candidate molecule, as a mediator of synaptic plasticity. In this commentary, we aim to highlight the strengths and potential areas of consideration of Jeon and Ha (Environ Health Prev Med 22:27, 2017). We also offer insight into the clinical implications of this study, such as advocating for exercise in healthy children and as adjunctive therapy in pathological states. This study is promising and further highlights the importance of cardiorespiratory exercise in improving physiological health and cognitive functioning in youth through the phenomenon of neuroplasticity.
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Affiliation(s)
- Tharmegan Tharmaratnam
- School of Medicine, Royal College of Surgeons in Ireland-Medical University of Bahrain, Adliya, Bahrain.
| | - Tyler Tabobondung
- Brantford General Hospital, Department of Family Medicine, Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Taylor Tabobondung
- Department of Physical and Environmental Sciences, University of Toronto, Toronto, ON, Canada
| | - Sally Doherty
- School of Medicine, Royal College of Surgeons in Ireland-Medical University of Bahrain, Adliya, Bahrain.,School of Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
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Briana DD, Malamitsi-Puchner A. Developmental origins of adult health and disease: The metabolic role of BDNF from early life to adulthood. Metabolism 2018; 81:45-51. [PMID: 29217485 DOI: 10.1016/j.metabol.2017.11.019] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 11/22/2017] [Accepted: 11/29/2017] [Indexed: 12/11/2022]
Abstract
Accumulating evidence suggests that the origins of adult disease may occur during fetal life. Thus, the concept of "developmental programming" has been introduced and supported by epidemiological and experimental data. This concept supports the idea that the nutritional and hormonal status during pregnancy could interfere in metabolism control. The mechanisms responsible for this "developmental programming" remain poorly documented. Current research indicates that neurotrophins and particularly brain-derived neurotrophic factor (BDNF) may play a crucial role in this process. Although mainly expressed in the nervous system, BDNF and its receptor, tropomyosin-related kinase B (TrkB), are immunolocalized in several regions of the human placenta and have important functions during pregnancy. BDNF serves widespread roles in regulating energy homeostasis in both fetuses and adults, by controlling patterns of fetal growth, adult feeding and physical activity, and by regulating glucose metabolism in peripheral tissues. Impaired BDNF signaling may be implicated in the etiopathogenesis of the metabolic syndrome. Novel BDNF-focused interventions are being developed for obesity, diabetes and neurological disorders. The aim of this article is to provide a brief comprehensive literary review regarding the potential implications of BDNF in "developmental programming", through regulation of metabolism and energy balance from early life to adulthood.
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Affiliation(s)
- Despina D Briana
- Department of Neonatology, National and Kapodistrian University of Athens, Athens, Greece
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Jordan W, Dobrowolny H, Bahn S, Bernstein HG, Brigadski T, Frodl T, Isermann B, Lessmann V, Pilz J, Rodenbeck A, Schiltz K, Schwedhelm E, Tumani H, Wiltfang J, Guest PC, Steiner J. Oxidative stress in drug-naïve first episode patients with schizophrenia and major depression: effects of disease acuity and potential confounders. Eur Arch Psychiatry Clin Neurosci 2018; 268:129-143. [PMID: 27913877 DOI: 10.1007/s00406-016-0749-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 11/18/2016] [Indexed: 02/07/2023]
Abstract
Oxidative stress and immune dysregulation have been linked to schizophrenia and depression. However, it is unknown whether these factors are related to the pathophysiology or whether they are an epiphenomenon. Inconsistent oxidative stress-related findings in previous studies may have resulted from the use of different biomarkers which show disparate aspects of oxidative stress. Additionally, disease severity, medication, smoking, endocrine stress axis activation and obesity are potential confounders. In order to address some of these shortcomings, we have analyzed a broader set of oxidative stress biomarkers in our exploratory study, including urinary 8-iso-prostaglandin F2α (8-iso-PGF2α), 8-OH-2-deoyxguanosine (8-OH-2-dG), and blood levels of malondialdehyde (MDA), superoxide dismutase (SOD) and glutathione S-transferase (GST) in acutely ill drug-naïve first episode patients with schizophrenia (n = 22), major depression (n = 18), and controls (n = 43). Possible confounding factors were considered, and patients were followed-up after 6 weeks of treatment. No differences were observed regarding 8-OH-2-dG, MDA and GST. At baseline, 8-iso-PGF2α levels were higher in patients with schizophrenia (p = 0.004) and major depression (p = 0.037), with a trend toward higher SOD concentrations in schizophrenia (p = 0.053). After treatment, schizophrenia patients showed a further increase in 8-iso-PGF2α (p = 0.016). These results were not related to age, sex, disease severity, medication or adipose tissue mass. However, 8-iso-PGF2α was associated with smoking, endocrine stress axis activation, C-reactive protein levels and low plasma concentrations of brain-derived neurotrophic factor. This study suggests a role of lipid peroxidation particularly in drug-naïve acutely ill schizophrenia patients and highlights the importance of taking into account other confounding factors in biomarker studies.
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Affiliation(s)
- Wolfgang Jordan
- Department of Psychiatry and Psychotherapy, Magdeburg Hospital GmbH, Magdeburg, Germany
- Department of Psychiatry and Psychotherapy, University of Goettingen, Goettingen, Germany
| | - Henrik Dobrowolny
- Department of Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Sabine Bahn
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Hans-Gert Bernstein
- Department of Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Tanja Brigadski
- Institute of Physiology, University of Magdeburg, Magdeburg, Germany
- Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Thomas Frodl
- Department of Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
- Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Berend Isermann
- Institute of Clinical Chemistry and Pathobiochemistry, University of Magdeburg, Magdeburg, Germany
| | - Volkmar Lessmann
- Institute of Physiology, University of Magdeburg, Magdeburg, Germany
- Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Jürgen Pilz
- Laboratory of Stress Monitoring, Hardegsen, Germany
| | - Andrea Rodenbeck
- Sleep Laboratory, Department of Pneumology, Evangelisches Krankenhaus Goettingen-Weende gGmbH, Goettingen, Germany
- Department of Sleep Medicine and Clinical Chronobiology, Institute of Physiology, St. Hedwig Hospital, Charite, University of Berlin, Berlin, Germany
| | - Kolja Schiltz
- Department of Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
- Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Edzard Schwedhelm
- Institute of Experimental and Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Hayrettin Tumani
- Department of Neurology, University of Ulm, Ulm, Germany
- Fachklinik für Neurologie Dietenbronn, Schwendi, Germany
| | - Jens Wiltfang
- Department of Psychiatry and Psychotherapy, University of Goettingen, Goettingen, Germany
- German Center for Neurodegenerative Diseases (DZNE), Goettingen, Germany
| | - Paul C Guest
- Department of Biochemistry and Tissue Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Johann Steiner
- Department of Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany.
- Center for Behavioral Brain Sciences, Magdeburg, Germany.
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36
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Machaalani R, Chen H. Brain derived neurotrophic factor (BDNF), its tyrosine kinase receptor B (TrkB) and nicotine. Neurotoxicology 2018; 65:186-195. [DOI: 10.1016/j.neuro.2018.02.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 02/21/2018] [Accepted: 02/25/2018] [Indexed: 02/07/2023]
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Jin H, Chen Y, Wang B, Zhu Y, Chen L, Han X, Ma G, Liu N. Association between brain-derived neurotrophic factor and von Willebrand factor levels in patients with stable coronary artery disease. BMC Cardiovasc Disord 2018; 18:23. [PMID: 29409455 PMCID: PMC5801890 DOI: 10.1186/s12872-018-0762-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Accepted: 01/29/2018] [Indexed: 12/21/2022] Open
Abstract
Background Brain-derived neurotrophic factor (BDNF) is a neurotrophin involved in angiogenesis and maintenance of endothelial integrity. Whether circulating BDNF levels are associated with von Willebrand factor (vWF) levels, which are indicators of endothelial dysfunction is not known. This study investigated the association between plasma BNDF and vWF levels and whether these biomarkers could predict cardiovascular events at a 12-month follow-up in patients with stable coronary artery disease (CAD). Methods We recruited 234 patients with suspected angina pectoris. Subjects were divided into CAD (n = 143) and control (n = 91) groups based on coronary angiography. Plasma BDNF and vWF levels were measured using ELISA. Patients were followed-up for one year, and information on adverse cardiac events was collected. Results CAD patients exhibited significantly lower plasma BDNF and higher vWF levels than those of control patients. High vWF levels were associated with low BDNF levels even after adjustment for age, gender, low-density lipoprotein (LDL) levels, and the presence of diabetes mellitus. A receiver operating characteristic curve was used to determine whether low BDNF and high vWF levels could predict adverse cardiovascular events. The area under the curve for vWF and the inverse of BDNF were 0.774 and 0.804, respectively. Conclusions These findings suggest that endothelial dysfunction is an important determinant of the impaired circulating BDNF levels, and they further reflected cardiovascular prognosis in stable CAD patients.
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Affiliation(s)
- Hong Jin
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, 210009, China.
| | - Yifei Chen
- Department of Cardiology, Wuxi Xishan People's Hospital, Wuxi, Jiangsu, 214000, China
| | - Bilei Wang
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, 210009, China
| | - Yi Zhu
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, 210009, China
| | - Long Chen
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, 210009, China
| | - Xiqiong Han
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, 210009, China
| | - Genshan Ma
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, 210009, China
| | - Naifeng Liu
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, 210009, China
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Enette L, Vogel T, Fanon JL, Lang PO. Effect of Interval and Continuous Aerobic Training on Basal Serum and Plasma Brain-Derived Neurotrophic Factor Values in Seniors: A Systematic Review of Intervention Studies. Rejuvenation Res 2017; 20:473-483. [DOI: 10.1089/rej.2016.1886] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Affiliation(s)
- Lievyn Enette
- Doctoral School in Life and Health Sciences, European Doctoral College (CDE), Strasbourg, France
- Department of Physiology and EA-3072, Medicine School, Strasbourg University, Strasbourg, France
| | - Thomas Vogel
- Department of Physiology and EA-3072, Medicine School, Strasbourg University, Strasbourg, France
- Geriatric Department, University Hospital, Strasbourg, France
| | - Jean Luc Fanon
- Department of Geriatric and Gerontology, University Hospital Centre of Martinique, Fort de France, France
| | - Pierre Olivier Lang
- Health and Wellbeing Academy, Anglia Ruskin University, Cambridge, United Kingdom
- Division of Geriatrics and Geriatric Rehabilitation, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
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Walsh JJ, Bentley RF, Gurd BJ, Tschakovsky ME. Short-Duration Maximal and Long-Duration Submaximal Effort Forearm Exercise Achieve Elevations in Serum Brain-Derived Neurotrophic Factor. Front Physiol 2017; 8:746. [PMID: 29056915 PMCID: PMC5635651 DOI: 10.3389/fphys.2017.00746] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 09/12/2017] [Indexed: 01/08/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is a major orchestrator of exercise-induced brain plasticity and circulating (peripheral) BDNF may have central effects. Approximately 99% of circulating BDNF is platelet-bound, and at rest ~30% of circulating platelets are stored in the spleen. Interestingly, forearm handgrip exercise significantly elevates sympathetic outflow and has been shown to induce splenic constriction, suggesting that small muscle mass exercise could stand as a viable strategy for increasing circulating BDNF; however, the BDNF response to handgrip exercise is currently unknown. Purpose: This study examined BDNF and platelet responses to short-duration maximal (ME) and prolonged submaximal (SE) effort handgrip exercise. Methods: Healthy males (n = 18; 21.4 ± 2.1 years, BMI 25.0 ± 1.0 kg/m2) performed 10 min of ME and 30 min of SE. Blood was sampled for the determination of serum BDNF and platelet count at rest and during the last minute of exercise. Results: Compared to rest, serum BDNF significantly increased during ME (21.2%) and SE (11.2%), which displayed a non-significant trend toward an intensity-dependent response. Platelets increased in an intensity-dependent fashion compared to rest with an 8.0% increase during ME and 3.1% during SE, and these responses were significantly correlated with diastolic blood pressure responses to handgrip exercise. Further, the amount of BDNF per platelet significantly increased compared to rest during ME (13.4%) and SE (8.7%). Conclusions: Handgrip exercise evokes significant increases in serum BDNF and platelets, implicating splenic constriction as a key mechanism and confirming efficacy of this exercise model for elevating circulating BDNF.
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Affiliation(s)
- Jeremy J Walsh
- Human Vascular Control Lab, School of Kinesiology and Health Studies, Queen's University, Kingston, ON, Canada
| | - Robert F Bentley
- Human Vascular Control Lab, School of Kinesiology and Health Studies, Queen's University, Kingston, ON, Canada
| | - Brendon J Gurd
- Queen's Muscle Physiology Lab, School of Kinesiology and Health Studies, Queen's University, Kingston, ON, Canada
| | - Michael E Tschakovsky
- Human Vascular Control Lab, School of Kinesiology and Health Studies, Queen's University, Kingston, ON, Canada
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The Effect of Aerobic Exercise on Brain-Derived Neurotrophic Factor in People with Neurological Disorders: A Systematic Review and Meta-Analysis. Neural Plast 2017; 2017:4716197. [PMID: 29057125 PMCID: PMC5625797 DOI: 10.1155/2017/4716197] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 08/09/2017] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To determine the effect of aerobic exercise on brain-derived neurotrophic factor (BDNF) levels in people with neurological disorders. DATA SOURCES Six electronic databases (CINAHL, PubMed, Cochrane, PsycINFO, SportDiscus, and Web of Science) were searched until the end of December 2016. STUDY SELECTION Experimental or observational studies of people with neurological disorders who undertook an exercise intervention with BDNF as an outcome measure. The search strategy yielded 984 articles. DATA EXTRACTION Study data were independently extracted from each article. Methodological quality of studies was assessed using the Physiotherapy Evidence Database (PEDro) scale. A meta-analysis was planned based on the assessment of predetermined criteria. DATA SYNTHESIS Eleven articles were included. Studies employed either a program of aerobic exercise, a single bout of aerobic exercise, or both. A meta-analysis of studies comparing a program of aerobic exercise against usual care/nil therapy showed a large effect (SMD: 0.84, 95% CI 0.47-1.20, p < 0.001) in favour of aerobic exercise to increase levels of BDNF. Findings for a single bout of aerobic exercise were mixed. Quality of studies was low (PEDro average score 4.3/10). CONCLUSIONS A program of aerobic exercise may contribute to increased levels of BDNF in neurological populations.
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Stability of BDNF in Human Samples Stored Up to 6 Months and Correlations of Serum and EDTA-Plasma Concentrations. Int J Mol Sci 2017; 18:ijms18061189. [PMID: 28587193 PMCID: PMC5486012 DOI: 10.3390/ijms18061189] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/10/2017] [Accepted: 05/30/2017] [Indexed: 12/24/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF), an important neural growth factor, has gained growing interest in neuroscience, but many influencing physiological and analytical aspects still remain unclear. In this study we assessed the impact of storage time at room temperature, repeated freeze/thaw cycles, and storage at −80 °C up to 6 months on serum and ethylenediaminetetraacetic acid (EDTA)-plasma BDNF. Furthermore, we assessed correlations of serum and plasma BDNF concentrations in two independent sets of samples. Coefficients of variations (CVs) for serum BDNF concentrations were significantly lower than CVs of plasma concentrations (n = 245, p = 0.006). Mean serum and plasma concentrations at all analyzed time points remained within the acceptable change limit of the inter-assay precision as declared by the manufacturer. Serum and plasma BDNF concentrations correlated positively in both sets of samples and at all analyzed time points of the stability assessment (r = 0.455 to rs = 0.596; p < 0.004). In summary, when considering the acceptable change limit, BDNF was stable in serum and in EDTA-plasma up to 6 months. Due to a higher reliability, we suggest favoring serum over EDTA-plasma for future experiments assessing peripheral BDNF concentrations.
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Alkadhi KA. Exercise as a Positive Modulator of Brain Function. Mol Neurobiol 2017; 55:3112-3130. [PMID: 28466271 DOI: 10.1007/s12035-017-0516-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 04/04/2017] [Indexed: 12/24/2022]
Abstract
Various forms of exercise have been shown to prevent, restore, or ameliorate a variety of brain disorders including dementias, Parkinson's disease, chronic stress, thyroid disorders, and sleep deprivation, some of which are discussed here. In this review, the effects on brain function of various forms of exercise and exercise mimetics in humans and animal experiments are compared and discussed. Possible mechanisms of the beneficial effects of exercise including the role of neurotrophic factors and others are also discussed.
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Affiliation(s)
- Karim A Alkadhi
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, 77204, USA.
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43
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Jeon YK, Ha CH. The effect of exercise intensity on brain derived neurotrophic factor and memory in adolescents. Environ Health Prev Med 2017; 22:27. [PMID: 29165142 PMCID: PMC5664787 DOI: 10.1186/s12199-017-0643-6] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 02/01/2017] [Indexed: 11/13/2022] Open
Abstract
Background Brain derived neurotrophic factor (BDNF) seems to serve as an important regulatory mechanism in the growth and development of neurons in many areas of the brain.Insulin-like growth factor 1 (IGF-1) is related to neurogenesis and regulation of the BDNF gene and is involved in the growth and differentiation of neurons.Cortisol is released in response to stimuli such as psychological oppression, anxiety, and fear. Stress also induces changes in BDNF. The purpose of this study was thus to examine the effects of varying intensities of aerobic exercise on resting serum BDNF, IGF-1 concentrations, cortisol, and memory of adolescents. Methods Forty male students with no history of physical illness from the middle school by participated in this study. Participants were randomly assigned to low, moderate, or high intensity treadmill exercise group, or a stretching (control) group. Exercise was performed 4 times per week for 12 weeks. Body composition, brain derived neurotrophic factor levels, insulin-like growth factor 1 levels, cortisol levels, and working memory were assessed. Results The high intensity exercise group showed a significant increase in brain derived neurotrophic factor at rest, concentration level of insulin-like growth factor 1, cortisol, and working memory. For resting brain derived neurotrophic factor, the high intensity exercise group showed a more significant increase compared to the low intensity aerobic and stretching groups. The change in the working memory significantly increased for the high intensity exercise group compared to the low intensity aerobic group, moderate intensity exercise group, and stretching group. Conclusions In adolescents, whose brains are still developing, aerobic exercise of moderate to high intensity levels seems to have a positive effect on levels of serum brain derived neurotrophic factor at rest and on cognitive functioning. Trial registration EHPM-D-16-00107R2. ICMJE. 12 July 2016.
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Affiliation(s)
- Yong Kyun Jeon
- Department of Physical Education, Dankook University, Yongin, Republic of Korea
| | - Chang Ho Ha
- Department Human Performance and Leisure Studies, North Carolina A&T State University, 1601 E. Market Street, Greensboro, NC, 27411, USA.
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Rao S, Martínez-Cengotitabengoa M, Yao Y, Guo Z, Xu Q, Li S, Zhou X, Zhang F. Peripheral blood nerve growth factor levels in major psychiatric disorders. J Psychiatr Res 2017; 86:39-45. [PMID: 27898323 DOI: 10.1016/j.jpsychires.2016.11.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 11/01/2016] [Accepted: 11/08/2016] [Indexed: 01/09/2023]
Abstract
Nerve growth factor (NGF) plays crucial roles in promoting neural growth and survival, and mediating synaptic and morphological plasticity. Several studies investigated the correlation between peripheral NGF levels and major psychiatric disorders, including schizophrenia (SCZ), major depressive disorder (MDD) and bipolar disorder (BPD); however, the findings were inconsistent. This meta-analysis sought to investigate blood NGF levels in patients with psychiatric disorders compared with healthy subjects and examined potential effects of blood fraction, medication and disease status. A total of 21 eligible studies, encompassing 1342 patients suffering from psychiatric disorders and 1225 healthy subjects, were enrolled in the present meta-analysis. No obvious publication bias was observed either for SCZ, MDD or BPD by the Begg's test (P > 0.05). Random-effects meta-analysis showed that SCZ (Z = 2.14, P = 0.033, SMD = -1.08, 95% CI = -2.07 to -0.09) and MDD (Z = 2.57, P = 0.010, SMD = -0.61, 95% CI = -1.08 to -0.14) patients had significantly reduced NGF levels, compared with healthy controls. Notably, this decrease was enhanced in un-medicated patients of SCZ (P = 0.004) and medicated or chronic patients of MDD (P < 0.001). No significant difference of NGF levels was observed between BPD patients and controls (P > 0.05). These results supported an association between the reduction of NGF levels and psychiatric disorders. It remains unclear whether the change of NGF levels is a prerequisite for its function in psychiatric disorders development or merely an epiphenomenon unrelated to the pathophysiologic mechanisms.
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Affiliation(s)
- Shuquan Rao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Mónica Martínez-Cengotitabengoa
- Araba University Hospital, Bioaraba Research Institute, Vitoria, Spain; Biomedical Research Networking Centre in Mental Health (CIBERSAM), Madrid, Spain; National Distance Education University (UNED), Vitoria, Spain
| | - Yao Yao
- Department of Fundamental Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Zhiyun Guo
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Qi Xu
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 10005, China
| | - Suiyan Li
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Xianli Zhou
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Fuquan Zhang
- Wuxi Mental Health Center, Nanjing Medical University, Wuxi, 214151, China
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Fabbri C, Hosak L, Mössner R, Giegling I, Mandelli L, Bellivier F, Claes S, Collier DA, Corrales A, Delisi LE, Gallo C, Gill M, Kennedy JL, Leboyer M, Lisoway A, Maier W, Marquez M, Massat I, Mors O, Muglia P, Nöthen MM, O'Donovan MC, Ospina-Duque J, Propping P, Shi Y, St Clair D, Thibaut F, Cichon S, Mendlewicz J, Rujescu D, Serretti A. Consensus paper of the WFSBP Task Force on Genetics: Genetics, epigenetics and gene expression markers of major depressive disorder and antidepressant response. World J Biol Psychiatry 2017; 18:5-28. [PMID: 27603714 DOI: 10.1080/15622975.2016.1208843] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Major depressive disorder (MDD) is a heritable disease with a heavy personal and socio-economic burden. Antidepressants of different classes are prescribed to treat MDD, but reliable and reproducible markers of efficacy are not available for clinical use. Further complicating treatment, the diagnosis of MDD is not guided by objective criteria, resulting in the risk of under- or overtreatment. A number of markers of MDD and antidepressant response have been investigated at the genetic, epigenetic, gene expression and protein levels. Polymorphisms in genes involved in antidepressant metabolism (cytochrome P450 isoenzymes), antidepressant transport (ABCB1), glucocorticoid signalling (FKBP5) and serotonin neurotransmission (SLC6A4 and HTR2A) were among those included in the first pharmacogenetic assays that have been tested for clinical applicability. The results of these investigations were encouraging when examining patient-outcome improvement. Furthermore, a nine-serum biomarker panel (including BDNF, cortisol and soluble TNF-α receptor type II) showed good sensitivity and specificity in differentiating between MDD and healthy controls. These first diagnostic and response-predictive tests for MDD provided a source of optimism for future clinical applications. However, such findings should be considered very carefully because their benefit/cost ratio and clinical indications were not clearly demonstrated. Future tests may include combinations of different types of biomarkers and be specific for MDD subtypes or pathological dimensions.
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Affiliation(s)
- Chiara Fabbri
- a Department of Biomedical and Neuromotor Sciences , University of Bologna , Bologna , Italy
| | - Ladislav Hosak
- b Department of Psychiatrics , Charles University, Faculty of Medicine and University Hospital, Hradec Králové , Czech Republic
| | - Rainald Mössner
- c Department of Psychiatry and Psychotherapy , University of Tübingen , Tübingen , Germany
| | - Ina Giegling
- d Department of Psychiatry, Psychotherapy and Psychosomatics , Martin Luther University of Halle-Wittenberg , Halle , Germany
| | - Laura Mandelli
- a Department of Biomedical and Neuromotor Sciences , University of Bologna , Bologna , Italy
| | - Frank Bellivier
- e Fondation Fondamental, Créteil, France AP-HP , GH Saint-Louis-Lariboisière-Fernand-Widal, Pôle Neurosciences , Paris , France
| | - Stephan Claes
- f GRASP-Research Group, Department of Neuroscience , University of Leuven , Leuven , Belgium
| | - David A Collier
- g Social, Genetic and Developmental Psychiatry Centre , Institute of Psychiatry, King's College London , London , UK
| | - Alejo Corrales
- h National University (UNT) Argentina, Argentinean Association of Biological Psychiatry , Buenos Aires , Argentina
| | - Lynn E Delisi
- i VA Boston Health Care System , Brockton , MA , USA
| | - Carla Gallo
- j Departamento de Ciencias Celulares y Moleculares, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía , Universidad Peruana Cayetano Heredia , Lima , Peru
| | - Michael Gill
- k Neuropsychiatric Genetics Research Group, Department of Psychiatry , Trinity College Dublin , Dublin , Ireland
| | - James L Kennedy
- l Neurogenetics Section, Centre for Addiction and Mental Health , Toronto , Ontario , Canada
| | - Marion Leboyer
- m Faculté de Médecine , Université Paris-Est Créteil, Inserm U955, Equipe Psychiatrie Translationnelle , Créteil , France
| | - Amanda Lisoway
- l Neurogenetics Section, Centre for Addiction and Mental Health , Toronto , Ontario , Canada
| | - Wolfgang Maier
- n Department of Psychiatry , University of Bonn , Bonn , Germany
| | - Miguel Marquez
- o Director of ADINEU (Asistencia, Docencia e Investigación en Neurociencia) , Buenos Aires , Argentina
| | - Isabelle Massat
- p UNI - ULB Neurosciences Institute, ULB , Bruxelles , Belgium
| | - Ole Mors
- q Department P , Aarhus University Hospital , Risskov , Denmark
| | | | - Markus M Nöthen
- s Institute of Human Genetics , University of Bonn , Bonn , Germany
| | - Michael C O'Donovan
- t MRC Centre for Neuropsychiatric Genetics and Genomics , Institute of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University , Cardiff , UK
| | - Jorge Ospina-Duque
- u Grupo de Investigación en Psiquiatría, Departamento de Psiquiatría, Facultad de Medicina , Universidad de Antioquia , Medellín , Colombia
| | | | - Yongyong Shi
- w Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education , Shanghai Jiao Tong University , Shanghai , China
| | - David St Clair
- x University of Aberdeen, Institute of Medical Sciences , Aberdeen , UK
| | - Florence Thibaut
- y University Hospital Cochin (Site Tarnier), University Sorbonne Paris Cité (Faculty of Medicine Paris Descartes), INSERM U 894 Centre Psychiatry and Neurosciences , Paris , France
| | - Sven Cichon
- z Division of Medical Genetics, Department of Biomedicine , University of Basel , Basel , Switzerland
| | - Julien Mendlewicz
- aa Laboratoire de Psychologie Medicale, Centre Européen de Psychologie Medicale , Université Libre de Bruxelles and Psy Pluriel , Brussels , Belgium
| | - Dan Rujescu
- d Department of Psychiatry, Psychotherapy and Psychosomatics , Martin Luther University of Halle-Wittenberg , Halle , Germany
| | - Alessandro Serretti
- a Department of Biomedical and Neuromotor Sciences , University of Bologna , Bologna , Italy
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The Efficacy of Non-Pharmacological Interventions on Brain-Derived Neurotrophic Factor in Schizophrenia: A Systematic Review and Meta-Analysis. Int J Mol Sci 2016; 17:ijms17101766. [PMID: 27783051 PMCID: PMC5085790 DOI: 10.3390/ijms17101766] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/10/2016] [Accepted: 10/14/2016] [Indexed: 12/22/2022] Open
Abstract
Several studies have investigated the relationship between non-pharmacological interventions (NPIs) and peripheral brain-derived neurotrophic factor (BDNF) in schizophrenia patients. We conducted a systematic review and meta-analysis to review the efficacy of NPIs on peripheral serum and plasma BDNF in subjects with schizophrenia (including schizoaffective disorder). Meta-analyses were conducted to examine the effects of NPIs on blood BDNF levels by using the standardized mean differences (SMDs) between the intervention groups and controls. In total, six randomized controlled trials with 289 participants were included. Of them, five studies used exercise, physical training or diet products. One study used cognitive training. Overall, the BDNF levels in the NPI group increased significantly compared with the control groups (SMD = 0.95, 95% confidence interval (CI) = 0.07 to 1.83, p = 0.03). Subgroup analyses indicated beneficial effects of a non-exercise intervention on peripheral BDNF levels (SMD = 0.41, 95% CI = 0.08 to 0.74, p = 0.01). Meta-regression analyses showed that the completion rate influenced the variation in SMD (p = 0.01). Despite insufficient evidence to draw a conclusion, our results suggest that use of NPIs as adjunctive treatments, specifically non-exercise interventions, may affect positively serum or plasma BDNF in patients with schizophrenia.
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Lee IT, Wang JS, Fu CP, Lin SY, Sheu WHH. Relationship between body weight and the increment in serum brain-derived neurotrophic factor after oral glucose challenge in men with obesity and metabolic syndrome: A prospective study. Medicine (Baltimore) 2016; 95:e5260. [PMID: 27787389 PMCID: PMC5089118 DOI: 10.1097/md.0000000000005260] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) plays a role in energy homeostasis. However, the postprandial BDNF change has not been well investigated. We hypothesized that the BDNF increment after oral glucose challenge is associated with body weight.To address this possibility, man adults with obesity in conjunction with metabolic syndrome were compared with normal weight controls at baseline in the initial cross-sectional protocol. The obese subjects then underwent a 12-week program for body-weight reduction in the prospective protocol. The area under the curve (AUC) of serum BDNF was recorded during a 75 g oral glucose tolerant test and the BDNF AUC index was defined as [(AUC of BDNF) - (fasting BDNF2 hours)]/(fasting BDNF2 hours).A total of 25 controls and 36 obese subjects completed the study assessments. In the cross-sectional protocol, the BDNF AUC index was significantly higher in the obese subjects than in the controls (9.0 ± 16.5% vs. - 8.0 ± 22.5%, P = 0.001). After weight reduction (from 97.0 ± 12.5 kg to 88.6 ± 12.9 kg, P < 0.001), the percentage change of body weight was significantly associated with the BDNF AUC index after the study (95% CI between 0.21 and 1.82, P = 0.015). Using 6% weight reduction as a cut-off value, a larger weight reduction was able to reliably predict a negative BDNF AUC index.In conclusion, a high BDNF AUC index was observed for obese men in this study, whereas the index value significantly decreased after body-weight reduction. These findings suggest that postprandial BDNF increment may be associated with obesity.
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Affiliation(s)
- I-Te Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung
- School of Medicine, National Yang-Ming University, Taipei
- School of Medicine, Chung Shan Medical University
| | - Jun-Sing Wang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung
- School of Medicine, National Yang-Ming University, Taipei
| | - Chia-Po Fu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung
| | - Shih-Yi Lin
- School of Medicine, National Yang-Ming University, Taipei
- Center for Geriatrics and Gerontology, Taichung Veterans General Hospital
| | - Wayne Huey-Herng Sheu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung
- School of Medicine, National Yang-Ming University, Taipei
- Institute of Medical Technology, National Chung-Hsing University, Taichung, Taiwan
- Correspondence: Wayne Huey-Herng Sheu, Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 40705, Taiwan (e-mail: )
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Tsai CL, Pan CY, Chen FC, Wang CH, Chou FY. Effects of acute aerobic exercise on a task-switching protocol and brain-derived neurotrophic factor concentrations in young adults with different levels of cardiorespiratory fitness. Exp Physiol 2016; 101:836-50. [DOI: 10.1113/ep085682] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 04/25/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Chia-Liang Tsai
- Institute of Physical Education, Health and Leisure Studies; National Cheng Kung University; Taiwan
| | - Chien-Yu Pan
- Department of Physical Education; National Kaohsiung Normal University; Taiwan
| | - Fu-Chen Chen
- Department of Recreational Sport and Health Promotion; National Pingtung University of Science and Technology; Taiwan
| | - Chun-Hao Wang
- Institute of Physical Education, Health and Leisure Studies; National Cheng Kung University; Taiwan
| | - Feng-Ying Chou
- Institute of Physical Education, Health and Leisure Studies; National Cheng Kung University; Taiwan
- Chi Mei Medical Center; Tainan Taiwan
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49
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Zheleznyakova GY, Cao H, Schiöth HB. BDNF DNA methylation changes as a biomarker of psychiatric disorders: literature review and open access database analysis. Behav Brain Funct 2016; 12:17. [PMID: 27267954 PMCID: PMC4895990 DOI: 10.1186/s12993-016-0101-4] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 05/26/2016] [Indexed: 02/06/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) plays an important role in nervous system development and function and it is well established that BDNF is involved in the pathogenesis of a wide range of psychiatric disorders. Recently, numerous studies have associated the DNA methylation level of BDNF promoters with certain psychiatric phenotypes. In this review, we summarize data from current literature as well as from our own analysis with respect to the correlation of BDNF methylation changes with psychiatric disorders and address questions about whether DNA methylation related to the BDNF can be useful as biomarker for specific neuropsychiatric disorders.
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Affiliation(s)
- Galina Y Zheleznyakova
- Department of Neuroscience, Uppsala University, Husargatan 3, BMC, 75124, Uppsala, Sweden. .,Department of Clinical Neuroscience, Karolinska Institute, Karolinska University Hospital, CMM L8:04, 17176, Stockholm, Sweden.
| | - Hao Cao
- Department of Neuroscience, Uppsala University, Husargatan 3, BMC, 75124, Uppsala, Sweden
| | - Helgi B Schiöth
- Department of Neuroscience, Uppsala University, Husargatan 3, BMC, 75124, Uppsala, Sweden
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50
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Pakulska MM, Elliott Donaghue I, Obermeyer JM, Tuladhar A, McLaughlin CK, Shendruk TN, Shoichet MS. Encapsulation-free controlled release: Electrostatic adsorption eliminates the need for protein encapsulation in PLGA nanoparticles. SCIENCE ADVANCES 2016; 2:e1600519. [PMID: 27386554 PMCID: PMC4928928 DOI: 10.1126/sciadv.1600519] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 05/03/2016] [Indexed: 05/04/2023]
Abstract
Encapsulation of therapeutic molecules within polymer particles is a well-established method for achieving controlled release, yet challenges such as low loading, poor encapsulation efficiency, and loss of protein activity limit clinical translation. Despite this, the paradigm for the use of polymer particles in drug delivery has remained essentially unchanged for several decades. By taking advantage of the adsorption of protein therapeutics to poly(lactic-co-glycolic acid) (PLGA) nanoparticles, we demonstrate controlled release without encapsulation. In fact, we obtain identical, burst-free, extended-release profiles for three different protein therapeutics with and without encapsulation in PLGA nanoparticles embedded within a hydrogel. Using both positively and negatively charged proteins, we show that short-range electrostatic interactions between the proteins and the PLGA nanoparticles are the underlying mechanism for controlled release. Moreover, we demonstrate tunable release by modifying nanoparticle concentration, nanoparticle size, or environmental pH. These new insights obviate the need for encapsulation and offer promising, translatable strategies for a more effective delivery of therapeutic biomolecules.
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Affiliation(s)
- Malgosia M. Pakulska
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
| | - Irja Elliott Donaghue
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
| | - Jaclyn M. Obermeyer
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
| | - Anup Tuladhar
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
| | - Christopher K. McLaughlin
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
| | - Tyler N. Shendruk
- The Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford OX1 3NP, UK
| | - Molly S. Shoichet
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
- Corresponding author.
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