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Neurotrophic factors

Aline Silva de Miranda, Rodrigo Novaes Ferreira, Érica Leandro Marciano Vieira, Larissa Katharina Sabino Abreu, Fátima Brant, Luciene Bruno Vieira, Fabíola Mara Ribeiro, Fabiana Simão Machado, Milene Alvarenga Rachid, Antônio Lúcio Teixeira
Several studies have proposed cerebral malaria (CM) as a CD4+ and CD8+ T lymphocyte-mediated disease. However, there are no data regarding the recruitment and/or persistence of these cells in the CNS following the phase of infection resolution. Glutamate-mediate excitotoxicity has also been implicated in CM. Blockade of glutamate NMDA receptors by its noncompetitive antagonist MK801 modulates cytokine and neurotrophic factors expression preventing cognitive and depressive-like behavior in experimental CM. Herein, we aim to investigate the role of T lymphocytes in later outcomes in CM, and whether the protective role of MK801 is associated with T lymphocytes response...
February 7, 2019: Journal of Neuroimmunology
Hai Lu, Menghan Li, Bo Zhang, Xuesong Ren, Lina Meng, Weijing Bai, Li Wang, Zhenzhen Wang, Shaojie Ding, Yuanyuan Gan, Zhilong Zhang, Peifang Li, Linpeng Wang, Zhihong Meng, Hong Zhao, Fei Wang, Chunhong Zhang
INTRODUCTION: Poststroke depression is a serious and common complication of stroke, especially the ischemic poststroke depression. Antidepressants are used in poststroke depression, and acupuncture may be an alternative approach. However, the efficacy and mechanism of acupuncture for poststroke depression has not been confirmed. METHODS/DESIGN: This is a multicenter, central-randomized, single-blind, sham-controlled clinical trial. We will allocate 208 subjects aged between 40 and 80 years old, diagnosed with initial poststroke depression (PSD) within 6 months to 2 groups randomly in a ratio of 1:1...
February 2019: Medicine (Baltimore)
Alessandro Crosio, Benedetta Elena Fornasari, Giovanna Gambarotta, Stefano Geuna, Stefania Raimondo, Bruno Battiston, Pierluigi Tos, Giulia Ronchi
Nerve regeneration after delayed nerve repair is often unsuccessful. Indeed, the expression of genes associated with regeneration, including neurotrophic and gliotrophic factors, is drastically reduced in the distal stump of chronically transected nerves; moreover, Schwann cells undergo atrophy, losing their ability to sustain regeneration. In the present study, to provide a three-dimensional environment and trophic factors supporting Schwann cell activity and axon re-growth, we combined the use of an effective conduit (a chitosan tube) with a promising intraluminal structure (fresh longitudinal skeletal muscle fibers)...
June 2019: Neural Regeneration Research
Mariya M Mikhailova, Andrey A Panteleyev, Mikhail A Paltsev, Andrey A Panteleyev
It is a well-known fact, that there is a close interconnection between vascular and neural structures in both embryonic development and postnatal life. Different models have been employed to dissect the mechanisms of these interactions, ranging from in vitro systems (e.g., co-culture of neural and endothelial cells) to in vivo imaging of central neural system recovery in laboratory animals after artificially induced trauma. Nevertheless, most of these models have serious limitations. Here, we describe an ex vivo model, representing an organotypic co-culture of aortic fragments (AF) with longitudinal slices of mouse neonatal spinal cord (SC) or dorsal root ganglia (DRG)...
February 13, 2019: Cell Biology International
Shiva Shrestha, Monichan Phay, Hak Hee Kim, Pedram Pouladvand, Seung Joon Lee, Soonmoon Yoo
Distinct subcellular localization and subsequent translational control of 3' UTR variants of mRNA encoding brain-derived neurotrophic factor (BDNF) are critical for the development and plasticity of neurons. Although the processes that lead to preferential localization of BDNF have been well studied, it is still not clear how neurons ensure differential BDNF production in a spatial-specific manner. Here, we identified that microRNA (miRNA)-206 has the potential to specifically regulate BDNF with a long 3' UTR without affecting its short 3' UTR counterpart...
February 2019: FEBS Open Bio
Shengchun Xu, Zemin Di, Yufeng He, Runjie Wang, Yuyang Ma, Rui Sun, Jing Li, Tao Wang, Yujun Shen, Shengyun Fang, Lijie Feng, Yuxian Shen
BACKGROUND: Extracellular accumulation of amyloid β-peptide (Aβ) is one of pathological hallmarks of Alzheimer's disease (AD) and contributes to the neuronal loss. Mesencephalic astrocyte-derived neurotrophic factor (MANF) is an endoplasmic reticulum (ER) stress-inducible neurotrophic factor. Many groups, including ours, have proved that MANF rescues neuronal loss in several neurological disorders, such as Parkinson's disease and cerebral ischemia. However, whether MANF exerts its protective effect against Aβ neurotoxicity in AD remains unknown...
February 13, 2019: Journal of Neuroinflammation
Renata Lejkowska, Miłosz Piotr Kawa, Ewa Pius-Sadowska, Dorota Rogińska, Karolina Łuczkowska, Bogusław Machaliński, Anna Machalińska
This study aimed to investigate whether the transplantation of genetically engineered bone marrow-derived mesenchymal stromal cells (MSCs) to overexpress brain-derived neurotrophic factor (BDNF) could rescue the chronic degenerative process of slow retinal degeneration in the rd6 (retinal degeneration 6) mouse model and sought to identify the potential underlying mechanisms. Rd6 mice were subjected to the intravitreal injection of lentivirally modified MSC-BDNF or unmodified MSC or saline. In vivo morphology, electrophysiological retinal function (ERG), and the expression of apoptosis-related genes, as well as BDNF and its receptor (TrkB), were assessed in retinas collected at 28 days and three months after transplantation...
February 12, 2019: International Journal of Molecular Sciences
Ming-Zhe Hu, An-Rong Wang, Ze-Yu Zhao, Xiang-Yan Chen, Yan-Bin Li, Bin Liu
BACKGROUND: Post-stroke depression (PSD) is one of the most prevalent emotional disorders after stroke and often results in poor outcomes. However, the underlying physiopathologic mechanism and effective treatment of PSD remain poorly elucidated. OBJECTIVE: To investigate whether paeoniflorin has antidepressant-like activity in a rat model of PSD. METHODS: Rats were randomly divided into four groups: sham-operated control (Sham), PSD, paeoniflorin (with PSD) and fluoxetine group(with PSD)...
February 13, 2019: Neurological Research
Javad Mahmoudi, Ata Mahmoodpoor, Mehdi Amirnia, Tohid Kazemi, Pooneh Chokhachi Baradaran, Shirin Sheikh Najafi, Saeed Sadigh-Eteghad, Fereshteh Farajdokht, Huaxi Xu, Mobina Belalzadeh, Siamak Sandoghchian Shotorbani
INTRODUCTION: Toll-like receptors (TLRs) are innate immunity receptors, which have an important role in modulating inflammation in disease. Cerebrolysin is a biotechnologically prepared peptide that stimulates neurotrophic regulation in the central nervous system. The aim of the present study was to investigate the effect of experimenting cerebrolysin on TLR2 and TLR4 in alcoholic liver disease (ALD). MATERIALS AND METHODS: TLR2 and TLR4 expressions were determined using real-time polymerase chain reaction in rats, which have used alcohol and they were separated into five groups...
February 12, 2019: Journal of Cellular Physiology
Hiroshi Tsuneki, Hitomi Yoshida, Kentaro Okamoto, Misako Yamaguchi, Kosuke Endo, Ayumi Nakano, Masaaki Tsuda, Naoki Toyooka, Tsutomu Wada, Toshiyasu Sasaoka
Brain-derived neurotrophic factor (BDNF), an essential factor for maintaining brain functions, has been reported to be reduced in various neurological diseases, including Alzheimer's disease and major depression. Therefore, new drugs to increase the BDNF expression need to be developed. Since phosphatidylinositol (3,4,5)-trisphosphate, a membrane signaling molecule produced by phosphoinositide 3 (PI3)-kinase in the BDNF signaling, is a candidate target of SH2 domain-containing inositol 5' phosphatase 2 (SHIP2, a 5'-lipid phosphatase), the present study examined the effect of a SHIP2 inhibitor AS1949490 on Bdnf expression in cultured cortical neurons...
February 9, 2019: European Journal of Pharmacology
Staley A Brod, John A Lincoln, Flavia Nelson
BACKGROUND AND PURPOSE: There is evidence of a relationship between promyelinating proteins and clinical multiple sclerosis (MS) activity during clinical relapse or recovery from clinical relapses. We examined the linkage between promyelinating biomarkers and volumetric changes in MS subjects during serial magnetic resonance imaging (MRI). METHODS: We enrolled 13 MS subjects with active brain MRI scans not on disease modifying therapies. Subjects underwent baseline MRI, serum, and cerebrospinal fluid (CSF) sampling...
February 12, 2019: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
Juli Choi, Hye-Jin Kwon, Jung-Eun Lee, Yunjin Lee, Ju-Young Seoh, Pyung-Lim Han
Alzheimer's disease (AD) is a neurodegenerative disease characterized by Aβ-induced pathology and progressive cognitive decline. The incidence of AD is growing globally, yet a prompt and effective remedy is not available. Aging is the greatest risk factor for AD. Brain aging proceeds with reduced vascularization, which can cause low oxygen (O2 ) availability. Accordingly, the question may be raised whether O2 availability in the brain affects AD pathology. We found that Tg-APP/PS1 mice treated with 100% O2 at increased atmospheric pressure in a chamber exhibited markedly reduced Aβ accumulation and hippocampal neuritic atrophy, increased hippocampal neurogenesis, and profoundly improved the cognitive deficits on the multiple behavioral test paradigms...
February 11, 2019: Aging Cell
Shouyue Liu, Tao Jiang, Yingjie Zhong, Yin Yu
Recently, there is increasing evidence that microRNAs are related to the development, diagnosis, treatment, and prognosis of glioblastoma. microRNA-210 (miR-210) had been identified in many human cancers, but the specific function of miR-210 remains unclear in glioblastoma. The present study mainly focused on exploring its biological role and potential molecular mechanisms in glioblastoma. We found that miR-210 expression was decreased in glioblastoma, and downregulation of miR-210 was related to worse prognosis in glioblastoma patients...
February 11, 2019: Journal of Cellular Biochemistry
Fang Luo, Yuling Mu, Cuicui Gao, Yan Xiao, Qian Zhou, Yiqing Yang, Xinyan Ni, Wei L Shen, Jiajun Yang
Brain-derived neurotrophic factor (BDNF) plays a crucial role in human obesity. Yet, the neural circuitry supporting the BDNF-mediated control of energy homeostasis remains largely undefined. To map key regions that might provide inputs to or receive inputs from the paraventricular nucleus (PVN) BDNF neurons, a key type of cells in regulating feeding and thermogenesis, we used rabies virus-based transsynaptic labeling and adeno-associated virus based anterograde tracing techniques to reveal their whole-brain distributions...
January 26, 2019: Journal of Genetics and Genomics, Yi Chuan Xue Bao
Peijun Tian, Gang Wang, Jianxin Zhao, Hao Zhang, Wei Chen
Depression disorder is rapidly advancing worldwide, and therapeutic strategy through gut-brain axis has been proven to be effective in the treatment. Here we studied the effect of lactic acid bacteria (LAB) treatment on depression. C57BL/6J mice were administered with LAB during a 5-week chronic unpredictable mild stress. Bifidobacterium longum subsp. infantis E41 and Bifidobacterium breve M2CF22M7, which improved the expression of Tph1 and secretion of 5-hydroxytryptophan (5-HTP) in RIN14B cells, significantly reduced depressive behaviors of mice in the forced swim test, sucrose preference test and step-down test, as well as increased the level of 5-hydroxytryptamine and brain-derived neurotrophic factor concentration in brain...
January 18, 2019: Journal of Nutritional Biochemistry
Saghar Keshavarzi, Sareh Kermanshahi, Leila Karami, Majid Motaghinejad, Manijeh Motevalian, Samira Sadr
BACKGROUND: Methamphetamine is a neuro-stimulant with neurodegenerative effects, and ambiguous mechanism of action. Metformin is an antidiabetic agent with neuroprotective properties but not fully understood mechanisms. The present study investigated the molecular basis of metformin neuroprotection against methamphetamine-induced neurodegeneration. BRIEF METHOD: Sixty adult male rats were randomly divided into six groups: group 1 (received normal saline), group 2 (received 10 mg/kg of methamphetamine) and groups 3, 4, 5 and 6 [received methamphetamine (10 mg/kg) plus metformin (50, 75, 100 and 150 mg/kg) respectively]...
February 8, 2019: Neurotoxicology
Qianqian He, Yan Mei, Yuanyuan Liu, Zhuo Yuan, Jian Zhang, Hong Yan, Li Shen, Yong Zhang
PURPOSE/BACKGROUND: The purpose of this study was to examine the relationships between ytochrome P450 family 2 subfamily C member 19 (CYP2C19) polymorphisms, brain-derived neurotrophic factor (BDNF) plasma levels, and treatment responses to escitalopram in Chinese patients with panic disorder (PD). METHODS/PROCEDURES: Ninety patients with PD were administered the Panic Disorder Severity Scale-Chinese Version (PDSS-CV) and Hamilton Anxiety Scale (HAMA-14) from baseline to 8 weeks...
February 7, 2019: Journal of Clinical Psychopharmacology
Xiao-Min Zhang, Ling-Zhi Wang, Bo He, Yu-Ke Xiang, Li-Xia Fan, Qin Wang, Liang Tao
Gap junctions (GJs) are novel molecular targets for pain therapeutics due to their pain-promoting function. INI-0602, a new GJ inhibitor, exerts a neuroprotective role, while its role in neuropathic pain is unclear. The objective was to investigate the analgesic role and mechanisms of INI-0602 in neuropathic pain induced by spared nerve injury (SNI), and whether INI-0602 attenuated pain-induced depression-like behaviors. Rats were randomly assigned to saline treatment groups (sham+NS and SNI+NS) or INI-0602 treatment groups (sham+INI-0602 and SNI+INI-0602)...
February 7, 2019: Neuroreport
Jian Liu, Han-Xiao Zhu, Wan-Li Fu, Xin-Wei Xu, Jun-Zhe Yang, Dan Dai, Yun Li
OBJECTIVE:  To investigate the expression of brain-derived neurotrophic factor(BDNF) and tyrosine kinase B (TrkB) protein in the hippocampus of model rats of comorbid epilepsy and depression. METHODS: A rat model of epilepsy was established using lithium chloride.pilocarpine. Among these epileptic rats, those with comorbid depression were selected by a battery of behavioral tests starting on the 14th day after establishing the epilepsy model. A depression group was established by unpredicted chronic mild stress (UCMS) and separate housing...
February 11, 2019: Neurological Research
Kr Roversi, Caren Tatiane de David Antoniazzi, L H Milanesi, H Z Rosa, M Kronbauer, D R Rossato, T Duarte, M M Duarte, Marilise E Burger
Depression is a common psychiatric disease which pharmacological treatment relieves symptoms, but still far from ideal. Tactile stimulation (TS) has shown beneficial influences in neuropsychiatric disorders, but the mechanism of action is not clear. Here, we evaluated the TS influence when applied on adult female rats previously exposed to a reserpine-induced depression-like animal model. Immediately after reserpine model (1 mg/kg/mL, 1×/day, for 3 days), female Wistar rats were submitted to TS (15 min, 3×/day, for 8 days) or not (unhandled)...
February 11, 2019: Molecular Neurobiology
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