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nerve growth factor

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https://www.readbyqxmd.com/read/28454094/proteolytic-cleavages-in-the-extracellular-domain-of-receptor-tyrosine-kinases-by-membrane-associated-serine-proteases
#1
Li-Mei Chen, Karl X Chai
The epithelial extracellular membrane-associated serine proteases matriptase, hepsin, and prostasin are proteolytic modifying enzymes of the extracellular domain (ECD) of the epidermal growth factor receptor (EGFR). Matriptase also cleaves the ECD of the vascular endothelial growth factor receptor 2 (VEGFR2) and the angiopoietin receptor Tie2. In this study we tested the hypothesis that these serine proteases may cleave the ECD of additional receptor tyrosine kinases (RTKs). We co-expressed the proteases in an epithelial cell line with Her2, Her3, Her4, insulin receptor (INSR), insulin-like growth factor I receptor (IGF-1R), the platelet-derived growth factor receptors (PDGFRs) α and β, or nerve growth factor receptor A (TrkA)...
April 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28453662/mglur5-tunes-ngf-trka-signaling-to-orient-spiny-stellate-neuron-dendrites-toward-thalamocortical-axons-during-whisker-barrel-map-formation
#2
Jui-Yen Huang, Hui-Chen Lu
Neurons receive and integrate synaptic inputs at their dendrites, thus dendritic patterning shapes neural connectivity and behavior. Aberrant dendritogenesis is present in neurodevelopmental disorders such as Down's syndrome and autism. Abnormal glutamatergic signaling has been observed in these diseases, as has dysfunction of the metabotropic glutamate receptor 5 (mGluR5). Deleting mGluR5 in cortical glutamatergic neurons disrupted their coordinated dendritic outgrowth toward thalamocortical axons and perturbed somatosensory circuits...
April 27, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28446003/effects-of-canine-and-murine-mesenchymal-stromal-cell-transplantation-on-peripheral-nerve-regeneration
#3
Diego Noe Rodriguez Sanchez, Matheus Bertanha, Thiago Dias Fernandes, Luiz Antônio de Lima Resende, Elenice Deffune, Rogério Martins Amorim
Background and Objectives: Maintaining a permissive microenvironment is essential for adequate nerve regeneration. Cell-based therapy has the potential based cell replacement and promotion of axonal growth. The adipose tissue derived mesenchymal stromal cells (Ad-MSC) attract interest because neuroregenerative and anti-inflammatory properties. The aim of this study was to evaluate the effects of canine and murine Ad-MSC transplantation on the sciatic nerve regeneration. Methods: Forty Wistar rats were divided randomly into: control group - CG (n=8); denervated group - DG (n=8); decellularized vein group - VG (n=8); decellularized vein+canine MSC-cMSC (n=8); descellularized vein+murine MSC-mMSC (n=8)...
April 30, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28441116/nerve-growth-factor-and-pain-mechanisms
#4
Franziska Denk, David L Bennett, Stephen B McMahon
Nerve growth factor (NGF) antagonism is on the verge of becoming a powerful analgesic treatment for numerous conditions, including osteoarthritis and lower back pain. This review summarizes the historical research, both fundamental and clinical, that led to our current understanding of NGF biology. We also discuss the surprising number of questions that remain about NGF expression patterns and NGF's various functions and interaction partners in relation to persistent pain and the potential side effects of anti-NGF therapy...
April 24, 2017: Annual Review of Neuroscience
https://www.readbyqxmd.com/read/28440296/gold-nanoclusters-assisted-delivery-of-ngf-sirna-for-effective-treatment-of-pancreatic-cancer
#5
Yifeng Lei, Lixue Tang, Yangzhouyun Xie, Yunlei Xianyu, Lingmin Zhang, Peng Wang, Yoh Hamada, Kai Jiang, Wenfu Zheng, Xingyu Jiang
Pancreatic cancer is one of the deadliest human cancers, whose progression is highly dependent on the nervous microenvironment. The suppression of gene expression of nerve growth factor (NGF) may have great potential in pancreatic cancer treatment. Here we show that gold nanocluster-assisted delivery of siRNA of NGF (GNC-siRNA) allows efficient NGF gene silencing and pancreatic cancer treatment. The GNC-siRNA complex increases the stability of siRNA in serum, prolongs the circulation lifetime of siRNA in blood and enhances the cellular uptake and tumour accumulation of siRNA...
April 25, 2017: Nature Communications
https://www.readbyqxmd.com/read/28438640/neutralizing-il-6-reduces-heart-injury-by-decreasing-nerve-growth-factor-precursor-in-the-heart-and-hypothalamus-during-rat-cardiopulmonary-bypass
#6
Chi Cheng, Jun-Mei Xu, Tian Yu
AIMS: To investigate whether the expression of nerve growth factor precursor (proNGF) changes during cardiopulmonary bypass (CPB) and whether neutralizing interleukin-6 (IL-6) during CPB has cardiac benefits. MAIN METHODS: Thirty patients undergoing CPB were recruited and their serum proNGF and troponin-I (TNI) were detected. In addition, rats were divided into three groups: CPB group, CPB with cardiac ischemia-reperfusion (IR) group, and a control group. The pre-CPB standard deviation of N-N intervals (SDNN) and post-CPB SDNN were compared...
April 21, 2017: Life Sciences
https://www.readbyqxmd.com/read/28435433/effect-of-melatonin-supplemented-at-the-light-or-dark-period-on-recovery-of-sciatic-nerve-injury-in-rats
#7
Enas Ezzat Rateb, Shaimaa Nasr Amin, Nashwa El-Tablawy, Laila Ahmed Rashed, Samah El-Attar
Peripheral nerve injuries can cause disabilities, social or economic problems. Melatonin, the secretory product of the pineal gland has antioxidant and anti-inflammatory actions. The aim of the present study was to investigate the effect of melatonin on the recovery of sciatic nerve after injury, comparing its effect when given in the light or the dark periods. Forty adult male Albino rats were allocated into four groups: control, nerve injury, nerve injury + melatonin given at light and nerve injury + melatonin given at dark...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28430338/yap-taz-and-areg-expression-in-eighth-cranial-nerve-schwannoma
#8
Alessandro Martini, Gino Marioni, Elisabetta Zanoletti, Rocco Cappellesso, Roberto Stramare, Elena Fasanaro, Chiara Faccioli, Luciano Giacomelli, Luca Denaro, Domenico D'Avella, Antonio Mazzoni, Ambrogio Fassina
BACKGROUND: Although the diagnosis and treatment of eighth cranial nerve (VIII CN) schwannoma (acoustic neuroma) has improved over the years, no factors capable of predicting tumor growth have been identified as yet. This study is a preliminary investigation of the expression in sporadic VIII CN schwannomas of Yes-associated protein (YAP), transcriptional coactivator with PDZ-binding motif (TAZ), and amphiregulin (AREG), a direct target gene of YAP and TAZ. The expression of YAP, TAZ and AREG was correlated with the volumetric dimensions of tumors on contrast-enhanced magnetic resonance imaging (ceMRI)...
April 7, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28427492/maternal-lead-exposure-induces-down-regulation-of-hippocampal-insulin-degrading-enzyme-and-nerve-growth-factor-expression-in-mouse-pups
#9
Xing Li, Ning Li, Hua Lei Sun, Jun Yin, Yu Chang Tao, Zhen Xing Mao, Zeng Li Yu, Wen Jie Li, John D Bogden
Lead exposure is a known potential risk factor for neurodegenerative diseases such as Alzheimer's disease (AD). Exposure to lead during the critical phase of brain development has been linked with mental retardation and hypophrenia in later life. This study was aimed to investigate the effects of lead exposure of pregnant mice on the expressions of insulin-degrading enzyme (IDE) and nerve growth factor (NGF) in the hippocampus of their offspring. Blood samples were collected from the tail vein, and after anesthetizing the pups, the brain was excised on postnatal day 21...
March 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28426529/diagnostic-utility-of-pax8-pax2-and-ngfr-immunohistochemical-expression-in-pediatric-renal-tumors
#10
Nicoleta C Arva, Jeffrey Bonadio, Elizabeth J Perlman, Mariana M Cajaiba
Pediatric renal tumors (PRT) with small round blue or spindle cell morphology can be diagnostically challenging and only a limited number of immunohistochemical markers have been documented to help in the diagnosis: paired box (Pax) 2 and nerve growth factor receptor (NGFR) positivity have been demonstrated in Wilms tumor (WT) and clear cell sarcoma of the kidney (CCSK), respectively. However, the immunohistochemical expression of these markers in other PRT remains unknown. This study investigated Pax8, Pax2, and NGFR immunophenotype in a large series of PRT...
April 19, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28425503/nerve-degeneration-and-regeneration-in-the-cephalopod-mollusc-octopus-vulgaris-the-case-of-the-pallial-nerve
#11
Pamela Imperadore, Sameer B Shah, Helen P Makarenkova, Graziano Fiorito
Regeneration is a process that restores structure and function of tissues damaged by injury or disease. In mammals complete regeneration is often unsuccessful, while most of the low phyla animals can re-grow many parts of their body after amputation. Cephalopod molluscs, and in particular Octopus vulgaris, are well known for their capacity to regenerate their arms and other body parts, including central and peripheral nervous system. To better understand the mechanism of recovery following nerve injury in this species we investigated the process of axon regrowth and nerve regeneration after complete transection of the Octopus pallial nerves...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28418072/myb-gata1-fusion-promotes-basophilic-leukaemia-involvement-of-il33-and-nerve-growth-factor-receptors
#12
Stéphane Ducassou, Valérie Prouzet-Mauléon, Marie-Céline Deau, Philippe Brunet de la Grange, Bruno Cardinaud, Hayssam Soueidan, Cathy Quelen, Pierre Brousset, Jean-Max Pasquet, François Moreau-Gaudry, Michel Arock, François-Xavier Mahon, Eric Lippert
Acute basophilic leukaemia (ABL) is a rare subtype of acute myeloblastic leukaemia. We previously described a recurrent t(X;6)(p11;q23) translocation generating a MYB-GATA1 fusion gene in male infants with ABL. To better understand its role, the chimeric MYB-GATA1 transcription factor was expressed in CD34-positive hematopoietic progenitors which were transplanted into immunodeficient mice. Cells expressing MYB-GATA1 showed increased expression of markers of immaturity (CD34), of granulocytic lineage (CD33, CD117) and of basophilic differentiation (CD203c, FcƐRI)...
April 18, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28415812/signal-transduction-growth-factors-the-effective-governance-of-transcription-and-cellular-adhesion-in-cancer-invasion
#13
REVIEW
Marina Di Domenico, Antonio Giordano
Giulio Bizzozero classified the tissues concerning their capacity to self-renew during the adult life in labile, stable and permanent tissues. In 1940 Viktor Hamburger and Rita Levi Montalcini exposed the possibility to induce the growth of permanent cells thanks to a specific ligand Nerve Growth Factor (NGF). Stanley Cohen purified a protein the Epidermal Growth Factor (EGF), able to induce epidermis proliferation and to elicit precocious eye disclosure and teeth eruption, establishing the "inverse" relationships between the proliferation and differentiation...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415766/anti-proliferative-role-of-recombinant-lethal-toxin-of-bacillus-anthracis-on-primary-mammary-ductal-carcinoma-cells-revealing-its-therapeutic-potential
#14
Rekha Khandia, Bramhadev Pattnaik, Katherukamem Rajukumar, Atul Pateriya, Sandeep Bhatia, Harshad Murugkar, Anil Prakash, Hare Krishna Pradhan, Kuldeep Dhama, Ashok Munjal, Sunil K Joshi
Bacillus anthracis secretes three secretary proteins; lethal factor (LF), protective antigen (PA) and edema factor (EF). The LF has ability to check proliferation of mammary tumors, chiefly depending on mitogen activated protein kinase (MAPK) signaling pathway. Evaluation of therapeutic potential of recombinant LF (rLF), recombinant PA (rPA) and lethal toxin (rLF + rPA = LeTx) on the primary mammary ductal carcinoma cells revealed significant (p < 0.01) reduction in proliferation of tumor cells with mean inhibition indices of 28...
March 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415680/long-term-neurocognitive-dysfunction-in-offspring-via-ngf-erk-creb-signaling-pathway-caused-by-ketamine-exposure-during-the-second-trimester-of-pregnancy-in-rats
#15
Yanan Li, Xinran Li, Cen Guo, Lina Li, Yuxin Wang, Yiming Zhang, Yu Chen, Wenhan Liu, Li Gao
Early life exposure to ketamine caused neurohistopathologic changes and persistent cognitive dysfunction. For this study, a pregnant rat model was developed to investigate neurocognitive effects in the offspring, following ketamine exposure during the second trimester. Pregnant rats on gestational day 14 (equal to midtrimester pregnancy in humans), intravenously received 200 mg/kg ketamine for 3 h. Their behavior was tested (Morris water maze, odor recognition test, and fear conditioning) at postnatal days (P25-30)...
March 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28413930/relationship-of-genetic-variants-with-procedural-pain-anxiety-and-distress-in-children
#16
Anne L Ersig, Debra L Schutte, Jennifer Standley, Elizabeth Leslie, Bridget Zimmerman, Charmaine Kleiber, Kirsten Hanrahan, Jeffrey C Murray, Ann Marie McCarthy
OBJECTIVE: This study used a candidate gene approach to examine genomic variation associated with pain, anxiety, and distress in children undergoing a medical procedure. STUDY DESIGN: Children aged 4-10 years having an IV catheter insertion were recruited from three Midwestern children's hospitals. Self-report measures of pain, anxiety, and distress were obtained as well as an observed measure of distress. Samples were collected from children and biological parents for analysis of genomic variation...
May 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/28413480/analysis-of-the-mechanism-by-which-nerve-growth-factor-promotes-callus-formation-in-mice-with-tibial-fracture
#17
Xi-Guang Sang, Zhi-Yong Wang, Lin Cheng, Yan-Hong Liu, Yong-Gang Li, Tao Qin, Kai Di
The aim of the present study was to analyze the mechanism by which nerve growth factor (NGF) promotes callus formation in mice with tibial fracture. NGF transgenic homozygotic mice and NGF wild homozygotic mice were selected to construct non-stabilized fracture model of tibia. The mice were sacrificed on days 7, 14 and 21, respectively, and each group had a sample with 8 mice at each point in time. X-ray radiography and safranin fast green were used to observe fracture healing and in situ hybridization was used to examine the NGF mRNA expression of tibia at each phase of fracture healing...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28413456/role-of-stem-cell-growth-factor-c-kit-in-the-pathogenesis-of-irritable-bowel-syndrome
#18
Yuna Chai, Yusheng Huang, Hongmei Tang, Xing Tu, Jianbo He, Ting Wang, Qingye Zhang, Fen Xiong, Detang Li, Zhenwen Qiu
Irritable bowel syndrome (IBS) is a functional bowel disease with a complicated etiopathogenesis, often characterized by gastrointestinal motility disorder and high visceral sensitivity. IBS is a comprehensive multi-systemic disorder, with the interaction of multiple factors, such as mental stress, intestinal function and flora, heredity, resulting in the disease. The existence of a common mechanism underlying the aforementioned factors is currently unknown. The lack of therapies that comprehensively address the disease symptoms, including abdominal pain and diarrhea, is a limitation of current IBS management...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28412968/interleukin-1-primes-human-mesenchymal-stem-cells-towards-an-anti-inflammatory-and-pro-trophic-phenotype-in-vitro
#19
Elena Redondo-Castro, Catriona Cunningham, Jonjo Miller, Licia Martuscelli, Sarah Aoulad-Ali, Nancy J Rothwell, Cay M Kielty, Stuart M Allan, Emmanuel Pinteaux
BACKGROUND: Inflammation is a key contributor to central nervous system (CNS) injury such as stroke, and is a major target for therapeutic intervention. Effective treatments for CNS injuries are limited and applicable to only a minority of patients. Stem cell-based therapies are increasingly considered for the treatment of CNS disease, because they can be used as in-situ regulators of inflammation, and improve tissue repair and recovery. One promising option is the use of bone marrow-derived mesenchymal stem cells (MSCs), which can secrete anti-inflammatory and trophic factors, can migrate towards inflamed and injured sites or can be implanted locally...
April 17, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28412394/water-soluble-chitosan-inhibits-nerve-growth-factor-and-attenuates-allergic-inflammation-in-mite-allergen-induced-allergic-rhinitis
#20
Pei-Chi Chen, Miao-His Hsieh, PhD Wen-ShuoKuo, Hui-Fan Kao, Chih-Li Hsu, Jiu-Yao Wang
Nerve growth factor induces nasal inflammation by augmenting the existing TH2 immune response, and this can be suppressed bywater-soluble chitosan, a natural, nontoxic product that provides new therapy for allergic rhinitis.
April 12, 2017: Journal of Allergy and Clinical Immunology
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