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https://www.readbyqxmd.com/read/28044424/ocular-nerve-growth-factor-administration-modulates-brain-derived-neurotrophic-factor-signaling-in-prefrontal-cortex-of-healthy-and-diabetic-rats
#1
Pamela Rosso, Sara De Nicolò, Valentina Carito, Marco Fiore, Angela Iannitelli, Sandra Moreno, Paola Tirassa
AIMS: Nerve growth factor (NGF) eyedrops (ed-NGF) activate brain neurons, stimulate growth factors, including brain-derived neurotrophic factor (BDNF), and exert neuroprotection in the forebrain of streptozotocin-induced diabetic rats (STZ rats). In this study, the effects of ed-NGF on BDNF signaling in the prefrontal cortex (PFC) were explored in healthy and STZ-diabetic rats, in which cortical neuronal and axonal loss, and altered circulating BDNF associated with depressive phenotype are also described...
January 3, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28032807/region-specific-expression-of-precursor-and-mature-brain-derived-neurotrophic-factors-after-chronic-alcohol-exposure
#2
Jin-Wei Yang, Wei Ma, Yan-Lei Yang, Xian-Bin Wang, Xing-Tong Li, Tong-Tong Wang, Xiang-Peng Wang, Wei Gao, Jun-Yan Li, Xin-Fu Zhou, Jian-Hui Guo, Li-Yan Li
BACKGROUND: Alcohol abuse is a serious health problem worldwide that causes a variety of physical and mental disorders. Research has shown that the brain-derived neurotrophic factor (BDNF) plays an important role in alcohol addiction. The BDNF precursor (proBDNF) exhibits different actions than BDNF through separate receptors and pathways in the central nervous system. However, the effects of proBDNF and BDNF in alcohol addiction are not fully known. OBJECTIVES: The objective was to identify the expression patterns and effects of proBDNF and BDNF after chronic alcohol exposure...
December 29, 2016: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/28012455/maternal-obesity-alters-brain-derived-neurotrophic-factor-bdnf-signaling-in-the-placenta-in-a-sexually-dimorphic-manner
#3
Calais S Prince, Alina Maloyan, Leslie Myatt
INTRODUCTION: Obesity is a major clinical problem in obstetrics being associated with adverse pregnancy outcomes and fetal programming. Brain derived neurotrophic factor (BDNF), a validated miR-210 target, is necessary for placental development, fetal growth, glucose metabolism, and energy homeostasis. Plasma BDNF levels are reduced in obese individuals; however, placental BDNF has yet to be studied in the context of maternal obesity. In this study, we investigated the effect of maternal obesity and sexual dimorphism on placental BDNF signaling...
January 2017: Placenta
https://www.readbyqxmd.com/read/28005701/effect-of-short-term-exercise-training-on-brain-derived-neurotrophic-factor-signaling-in-spontaneously-hypertensive-rats
#4
Alice Monnier, Philippe Garnier, Aurore Quirie, Nicolas Pernet, Céline Demougeot, Christine Marie, Anne Prigent-Tessier
OBJECTIVE: Decreased brain-derived neurotrophic factor (BDNF) level has been reported in the hippocampus of hypertensive rats. The present study explored whether brain neurons and/or endothelial cells are targeted by hypertension with respect to BDNF expression and the potential of physical exercise to cope with hypertension. METHODS: Physical exercise was induced in spontaneously hypertensive rats (SHR) and Wistar Kyoto (WKY) rats. The hippocampus of sedentary and exercised rats (n = 6 for each group) were used for western blots to assess proBDNF, mature BDNF (mBDNF), tropomyosin-related kinase B (TrkB), P-TrkB (TrkB phosphorylated at tyrosine 816), synaptophysin, endothelial nitric oxide synthase (eNOS) and eNOS phosphorylated at serine 1177 protein levels...
February 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/27957676/injection-of-anti-probdnf-in-anterior-cingulate-cortex-acc-reverses-chronic-stress-induced-adverse-mood-behaviors-in-mice
#5
C R Yang, Y Y Bai, C S Ruan, F H Zhou, F Li, C Q Li, X F Zhou
Foraging behavior is a species-specific behavior which is considered to involve the decision making and higher cognitive functions. We previously established a novel method to detect the foraging behavior in chronic unpredictable mild stress (CUMS)-induced depression mice, in which the food foraging activity of mice was significantly reduced. Furthermore, it is generally assumed that the bilateral anterior cingulate cortex (ACC) is related to foraging activity in rat. Brain-derived neurotrophic factor (BDNF) is widely expressed in many regions of the brain and is down-regulated in depressive patients...
December 12, 2016: Neurotoxicity Research
https://www.readbyqxmd.com/read/27915043/involvement-of-bdnf-trkb-signaling-in-the-effect-of-diphenyl-diselenide-on-motor-function-in-a-parkinson-s-disease-rat-model
#6
Tuane Bazanella Sampaio, Simone Pinton, Juliana Trevisan da Rocha, Bibiana Mozzaquatro Gai, Cristina Wayne Nogueira
Parkinson's disease is a progressive neurodegenerative disorder characterized by degeneration of nigrostriatal dopaminergic neurons. Diphenyl diselenide [(PhSe)2] is a compound with pharmacological proprieties, such as antidepressant and neuroprotective. Therefore, this study investigated whether (PhSe)2 reverses motor impairment and neurochemical alterations in a model of Parkinson's disease induced by 6-hydroxydopamine (6-OHDA) in rats. For this, male Wistar rats received 20μg/3μl of 6-OHDA or vehicle into the right striatum...
December 1, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27913431/pro-brain-derived-neurotrophic-factor-probdnf-mediated-p75ntr-activation-promotes-depolarizing-actions-of-gaba-and-increases-susceptibility-to-epileptic-seizures
#7
Baptiste Riffault, Nazim Kourdougli, Camille Dumon, Nadine Ferrand, Emmanuelle Buhler, Fabienne Schaller, Caroline Chambon, Claudio Rivera, Jean-Luc Gaiarsa, Christophe Porcher
The brain-derived neurotrophic factor (BDNF) is synthesized as a precursor, namely proBDNF, which can be processed into mature BDNF (mBDNF). Evidences suggest that proBDNF signaling through p75(NTR) may account for the emergence of neurological disorders. These findings support the view that the relative availability of mBDNF and proBDNF forms is an important mechanism underlying brain circuit formation and cognitive functions. Here we describe novel insights into the proBDNF/p75(NTR) mechanisms and function in vivo in modulating neuronal circuit and synaptic plasticity during the first postnatal weeks in rats...
December 1, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/27891714/altered-serum-level-of-matrix-metalloproteinase-9-and-its-association-with-decision-making-in-eating-disorders
#8
Junko Matsumoto, Yoshiyuki Hirano, Kenji Hashimoto, Tamaki Ishima, Nobuhisa Kanahara, Tomihisa Niitsu, Akihiro Shiina, Tasuku Hashimoto, Yasunori Sato, Koutaro Yokote, Shunichi Murano, Hiroshi Kimura, Yutaka Hosoda, Eiji Shimizu, Masaomi Iyo, Michiko Nakazato
AIMS: The aims of this study were to determine whether the serum levels of precursor brain-derived neurotrophic factor (proBDNF), mature BDNF (mBDNF), and matrix metalloproteinase-9 (MMP-9) are altered in patients with eating disorders (EDs) including anorexia nervosa (AN) and bulimia nervosa (BN), and to explore whether those levels are associated with decision-making abilities. METHODS: Nineteen women with AN, 28 women with BN, and 22 age-matched healthy women (HC) were enrolled in the current study...
November 28, 2016: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/27777607/effect-of-mirtazapine-versus-selective-serotonin-reuptake-inhibitors-on-benzodiazepine-use-in-patients-with-major-depressive-disorder-a-pragmatic-multicenter-open-label-randomized-active-controlled-24-week-trial
#9
Tasuku Hashimoto, Akihiro Shiina, Tadashi Hasegawa, Hiroshi Kimura, Yasunori Oda, Tomihisa Niitsu, Masatomo Ishikawa, Masumi Tachibana, Katsumasa Muneoka, Satoshi Matsuki, Michiko Nakazato, Masaomi Iyo
BACKGROUND: This study aimed to evaluate whether selecting mirtazapine as the first choice for current depressive episode instead of selective serotonin reuptake inhibitors (SSRIs) reduces benzodiazepine use in patients with major depressive disorder (MDD). We concurrently examined the relationship between clinical responses and serum mature brain-derived neurotrophic factor (BDNF) and its precursor, proBDNF. METHODS: We conducted an open-label randomized trial in routine psychiatric practice settings...
2016: Annals of General Psychiatry
https://www.readbyqxmd.com/read/27709490/atorvastatin-protects-from-a%C3%AE-1-40-induced-cell-damage-and-depressive-like-behavior-via-probdnf-cleavage
#10
Fabiana K Ludka, Maurício P Cunha, Tharine Dal-Cim, Luisa Bandeira Binder, Leandra C Constantino, Caio M Massari, Wagner C Martins, Ana Lúcia S Rodrigues, Carla I Tasca
Intracerebroventricular (icv) amyloid-beta (Aβ)1-40 infusion to mice has been demonstrated to cause neurotoxicty and depressive-like behavior and it can be used to evaluate antidepressant and neuroprotective effect of drugs. Atorvastatin is a widely used statin that has demonstrated antidepressant-like effect in predictable animal behavioral models and neuroprotective effect against Aβ1-40 infusion. The purpose of this study was to determine the effect of in vivo atorvastatin treatment against Aβ1-40-induced changes in mood-related behaviors and biochemical parameters in ex vivo hippocampal slices from mice...
October 5, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27613282/ratio-of-mbdnf-to-probdnf-for-differential-diagnosis-of-major-depressive-disorder-and-bipolar-depression
#11
Guoqing Zhao, Chen Zhang, Jun Chen, Yousong Su, Rubai Zhou, Fan Wang, Weiping Xia, Jia Huang, Zuowei Wang, Yingyan Hu, Lan Cao, Xiaoyun Guo, Chengmei Yuan, Yong Wang, Zhenghui Yi, Weihong Lu, Yan Wu, Zhiguo Wu, Wu Hong, Daihui Peng, Yiru Fang
There is a high rate of misdiagnosis between major depressive disorder (MDD) and bipolar disorder (BD) in clinical practice. Our previous work provided suggestive evidence for brain-derived neurotrophic factor (BDNF) in differentiating BD from MDD. In this study, we aimed to investigate the role of mature BDNF (mBDNF) and its precursor (proBDNF) in distinguishing bipolar depression (BP) from MDD during acute depressive episode. A total of 105 participants, including 44 healthy controls, 37 MDD patients and 24 BP patients, were recruited...
September 9, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27503312/probdnf-inhibits-collective-migration-and-chemotaxis-of-rat-schwann-cells
#12
You-Quan Ding, Xuan-Yang Li, Guan-Nan Xia, Hong-Yi Ren, Xin-Fu Zhou, Bing-Yin Su, Jian-Guo Qi
Schwann cell migration, including collective migration and chemotaxis, is essential for the formation of coordinate interactions between Schwann cells and axons during peripheral nerve development and regeneration. Moreover, limited migration of Schwann cells imposed a serious obstacle on Schwann cell-astrocytes intermingling and spinal cord repair after Schwann cell transplantation into injured spinal cords. Recent studies have shown that mature brain-derived neurotrophic factor, a member of the neurotrophin family, inhibits Schwann cell migration...
October 2016: Tissue & Cell
https://www.readbyqxmd.com/read/27494324/prenatal-cocaine-exposure-upregulates-bdnf-trkb-signaling
#13
Andres Stucky, Kalindi P Bakshi, Eitan Friedman, Hoau-Yan Wang
Prenatal cocaine exposure causes profound changes in neurobehavior as well as synaptic function and structure with compromised glutamatergic transmission. Since synaptic health and glutamatergic activity are tightly regulated by brain-derived neurotrophic factor (BDNF) signaling through its cognate tyrosine receptor kinase B (TrkB), we hypothesized that prenatal cocaine exposure alters BDNF-TrkB signaling during brain development. Here we show prenatal cocaine exposure enhances BDNF-TrkB signaling in hippocampus and prefrontal cortex (PFCX) of 21-day-old rats without affecting the expression levels of TrkB, P75NTR, signaling molecules, NMDA receptor-NR1 subunit as well as proBDNF and BDNF...
2016: PloS One
https://www.readbyqxmd.com/read/27457814/sorcs2-is-required-for-bdnf-dependent-plasticity-in-the-hippocampus
#14
S Glerup, U Bolcho, S Mølgaard, S Bøggild, C B Vaegter, A H Smith, J L Nieto-Gonzalez, P L Ovesen, L F Pedersen, A N Fjorback, M Kjolby, H Login, M M Holm, O M Andersen, J R Nyengaard, T E Willnow, K Jensen, A Nykjaer
SorCS2 is a member of the Vps10p-domain receptor gene family receptors with critical roles in the control of neuronal viability and function. Several genetic studies have suggested SORCS2 to confer risk of bipolar disorder, schizophrenia and attention deficit-hyperactivity disorder. Here we report that hippocampal N-methyl-d-aspartate receptor-dependent synaptic plasticity is eliminated in SorCS2-deficient mice. This defect was traced to the ability of SorCS2 to form complexes with the neurotrophin receptor p75(NTR), required for pro-brain-derived neurotrophic factor (BDNF) to induce long-term depression, and with the BDNF receptor tyrosine kinase TrkB to elicit long-term potentiation...
December 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/27390218/lentivirus-mediated-overexpression-of-microrna-210-improves-long-term-outcomes-after-focal-cerebral-ischemia-in-mice
#15
Li-Li Zeng, Xiao-Song He, Jian-Rong Liu, Chao-Bo Zheng, Yong-Ting Wang, Guo-Yuan Yang
AIMS: MicroRNAs play an important role in the pathogenesis of ischemic brain injury and in the repair process during postischemic condition. However, the key miRNAs and their function in these processes remain unclear. METHODS: Circulating blood MicroRNAs profiles were examined in the ischemic stroke patients. The predicted network of difference was analyzed by ingenuity pathway analysis. The key MicroRNAs were selected, and the function was further studied in a mouse ischemia model...
December 2016: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/27312407/probdnf-signaling-regulates-depression-like-behaviors-in-rodents-under-chronic-stress
#16
Yin-Yin Bai, Chun-Sheng Ruan, Chun-Rui Yang, Jia-Yi Li, Zhi-Long Kang, Li Zhou, Dennis Liu, Yue-Qing Zeng, Ting-Hua Wang, Chang-Fu Tian, Hong Liao, Larisa Bobrovskaya, Xin-Fu Zhou
Chronic exposure to stressful environment is a key risk factor contributing to the development of depression. However, the mechanisms involved in this process are still unclear. Brain-derived neurotropic factor (BDNF) has long been investigated for its positive role in regulation of mood, although the role of its precursor, proBDNF, in regulation of mood is not known. In this study, using an unpredictable chronic mild stress (UCMS) paradigm we found that the protein levels of proBDNF were increased in the neocortex and hippocampus of stressed mice and this UCMS-induced upregulation of proBDNF was abolished by chronic administration of fluoxetine...
November 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27310873/bdnf-pro-peptide-regulates-dendritic-spines-via-caspase-3
#17
J Guo, Y Ji, Y Ding, W Jiang, Y Sun, B Lu, G Nagappan
The precursor of brain-derived neurotrophic factor (BDNF) (proBDNF) is enzymatically cleaved, by either intracellular (furin/PC1) or extracellular proteases (tPA/plasmin/MMP), to generate mature BDNF (mBDNF) and its pro-peptide (BDNF pro-peptide). Little is known about the function of BDNF pro-peptide. We have developed an antibody that specifically detects cleaved BDNF pro-peptide, but not proBDNF or mBDNF. Neuronal depolarization elicited a marked increase in extracellular BDNF pro-peptide, suggesting activity-dependent regulation of its extracellular levels...
June 16, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27306299/brain-bdnf-levels-are-dependent-on-cerebrovascular-endothelium-derived-nitric-oxide
#18
Hayat Banoujaafar, Alice Monnier, Nicolas Pernet, Aurore Quirié, Philippe Garnier, Anne Prigent-Tessier, Christine Marie
Scientific evidence continues to demonstrate a link between endothelial function and cognition. Besides, several studies have identified a complex interplay between nitric oxide (NO) and brain-derived neurotrophic factor (BDNF), a neurotrophin largely involved in cognition. Therefore, this study investigated the link between cerebral endothelium-derived NO and BDNF signaling. For this purpose, levels of BDNF and the phosphorylated form of endothelial NO synthase at serine 1177 (p-eNOS) were simultaneously measured in the cortex and hippocampus of rats subjected to either bilateral common carotid occlusion (n = 6), physical exercise (n = 6) or a combination of both (n = 6) as experimental approaches to modulate flow-induced NO production by the cerebrovasculature...
September 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27263272/-diversity-of-probdnf-and-mbdnf-functions-in-the-central-nervous-system
#19
REVIEW
A A Borodinova, S V Salozhin
Brain-derived neurotrophic factor (BDNF) is one of the major protein regulators of diverse biological functions in the nervous system. It is synthesized as a precursor protein (proBDNF) that undergoes proteolytic cleavage in order to become a mature molecule. It was repeatedly shown that the proBDNF/ mBDNF ratio is determined by concomitant neuronal activity. A growing body of evidence argues that proBDNF has its own biological functions, oftentimes in opposition to functions of the mature molecule. Therefore, the balance of concentrations of proBDNF and mature neurotrophin is an important constituent of in any biological processes in nerve cells...
January 2016: Zhurnal Vyssheĭ Nervnoĭ Deiatelnosti Imeni I P Pavlova
https://www.readbyqxmd.com/read/27251195/peripheral-brain-derived-neurotrophic-factor-precursor-regulates-pain-as-an-inflammatory-mediator
#20
Cong Luo, Xiao-Lin Zhong, Fiona H Zhou, Jia-Yi Li, Pei Zhou, Jun-Mei Xu, Bo Song, Chang-Qi Li, Xin-Fu Zhou, Ru-Ping Dai
The precursor of brain derived neurotrophic factor (proBDNF), the unprocessed BDNF gene product, binds to its receptors and exerts the opposing biologic functions of mature BDNF. proBDNF is expressed in the peripheral tissues but the functions of peripheral proBDNF remain elusive. Here we showed that proBDNF and its predominant receptor, p75 pan-neurotrophin receptor were upregulated in the nerve fibers and inflammatory cells in the local tissue in inflammatory pain. Neutralization of proBDNF by polyclonal antibody attenuated pain in different models of inflammatory pain...
2016: Scientific Reports
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