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https://www.readbyqxmd.com/read/29241198/fam3a-protects-against-glutamate-induced-toxicity-by-preserving-calcium-homeostasis-in-differentiated-pc12-cells
#1
Qing Song, Wen-Li Gou, Yu-Liang Zou
BACKGROUND/AIMS: Stroke is the leading cause of adult disability, and glutamate-induced dysregulation of intracellular Ca2+ homeostasis is a key mechanism. FAM3A is the first member of the family with sequence similarity 3 (FAM3) gene family, and its biological function remains largely unknown. We have recently reported that FAM3A exerts protective effects against oxidative stress and mitochondrial dysfunction in HT22 cells. METHODS: Here, we investigated the protective effects of FAM3A using a glutamate-induced neuronal injury model in nerve growth factor (NGF)-differentiated PC12 cells...
December 12, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29239906/nerve-growth-factor-changes-and-corneal-nerve-repair-after-keratoplasty
#2
Yueji Pan, Fang Liu, Xiaofeng Qi, Yuan Hu, Feihong Xu, Hui Jia
SIGNIFICANCE: Measured tear concentration of nerve growth factor is correlated with postoperative corneal reinnervation among patients who undergo keratoplasty. This may be a future therapeutic target for post-keratoplasty corneal nerve regeneration. PURPOSE: To determine the relationship between changes in the content of nerve growth factor (NGF) in tear fluid and corneal subepithelial nerve regeneration in patients after keratoplasty. METHODS: In this retrospective study, 30 eyes of 28 patients (15 males, 13 females; mean age 42...
December 13, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/29239338/effects-of-neuregulin-1-on-autonomic-nervous-system-remodeling-post-myocardial-infarction-in-a-rat-model
#3
Xin Lai, Liang Zhong, Hai-Xia Fu, Song Dang, Xin Wang, Ning Zhang, Gao-Ke Feng, Zi-Qiang Liu, Xi Wang, Long Wang
Sympathetic nerve and vagus nerve remodeling play an important part in cardiac function post-myocardial infarction (MI). Increasing evidence indicates that neuregulin-1 (NRG-1) improves cardiac function following heart failure. Since its impact on cardiac function and neural remodeling post-MI is poorly understood, we aimed to investigate the role of NRG-1 in autonomic nervous system remodeling post-MI. Forty-five Sprague-Dawley rats were equally randomized into three groups: sham (with the left anterior descending coronary artery exposed but without ligation), MI (left anterior descending coronary artery ligation), and MI plus NRG-1 (left anterior descending coronary artery ligation followed by intraperitoneal injection of NRG-1 (10 μg/kg, once daily for 7 days))...
November 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29234527/sphingosine-1-phosphate-receptor-1-modulates-cntf-induced-axonal-growth-and-neuroprotection-in-the-mouse-visual-system
#4
Sandrine Joly, Deniz Dalkara, Vincent Pernet
The lack of axonal regeneration and neuronal cell death causes permanent neurological deficits in the injured CNS. Using the classical CNS injury model of optic nerve crush in mice, ciliary neurotrophic factor (CNTF) was found to stimulate retinal ganglion cell (RGC) survival and axonal growth, but in an incomplete fashion. The elucidation of molecular mechanisms impairing CNTF-induced axonal regeneration is paramount to promote visual recovery. In the present study, we sought to evaluate the contribution of sphingosine 1-phosphate receptor 1 (S1PR1) to the neuroprotective and regenerative effects of CNTF...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/29234013/the-differentiation-stage-of-transplanted-stem-cells-modulates-nerve-regeneration
#5
Ching-Wen Huang, Wen-Chin Huang, Xuefeng Qiu, Flavia Fernandes Ferreira da Silva, Aijun Wang, Shyam Patel, Leon J Nesti, Mu-Ming Poo, Song Li
In regenerative medicine applications, the differentiation stage of implanted stem cells must be optimized to control cell fate and enhance therapeutic efficacy. We investigated the therapeutic potential of human induced pluripotent stem cell (iPSC)-derived cells at two differentiation stages on peripheral nerve regeneration. Neural crest stem cells (NCSCs) and Schwann cells (NCSC-SCs) derived from iPSCs were used to construct a tissue-engineered nerve conduit that was applied to bridge injured nerves in a rat sciatic nerve transection model...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29230587/arterial-wall-hypertrophy-is-ameliorated-by-%C3%AE-2-adrenergic-receptor-antagonist-or-aliskiren-in-kidneys-of-angiotensinogen-knockout-mice
#6
Haruka Nakamori, Shin-Ichiro Yoshida, Hiroaki Ishiguro, Shota Suzuki, Hiroaki Yasuzaki, Tatsuo Hashimoto, Tomoaki Ishigami, Nobuhito Hirawa, Yoshiyuki Toya, Satoshi Umemura, Kouichi Tamura
BACKGROUND: Arterial hypertrophy and interstitial fibrosis are important characteristics in kidneys of angiotensinogen-knockout (Atg -/-) mice. In these mice, which exhibit polyuria and hypotension, sympathetic nerve signaling is estimated to be compensatorily hyperactive. Furthermore, transforming growth factor (TGF)-β1 is overexpressed in mice kidneys. To determine whether sympathetic nerve signaling and TGF-β1 exacerbate arterial hypertrophy and interstitial fibrosis, intervention studies of such signaling are required...
December 11, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/29230380/the-axolotl-limb-regeneration-model-as-a-discovery-tool-for-engineering-the-stem-cell-niche
#7
Negar Seyedhassantehrani, Takayoshi Otsuka, Shambhavi Singh, David M Gardiner
Purpose of review: Recent advances in genomics and gene editing have expanded the range of model organisms to include those with interesting biological capabilities such as regeneration. Among these are the classic models of regeneration biology, the salamander. Although stimulating endogenous regeneration in humans likely is many years away, with advances in stem cell biology and biomedical engineering (e.g. bio-inspired materials), it is evident that there is great potential to enhance regenerative outcomes by approaching the problem from an engineering perspective...
September 2017: Current Stem Cell Reports
https://www.readbyqxmd.com/read/29230357/comparative-analyses-of-putative-toxin-gene-homologs-from-an-old-world-viper-daboia-russelii
#8
Neeraja M Krishnan, Binay Panda
Availability of snake genome sequences has opened up exciting areas of research on comparative genomics and gene diversity. One of the challenges in studying snake genomes is the acquisition of biological material from live animals, especially from the venomous ones, making the process cumbersome and time-consuming. Here, we report comparative sequence analyses of putative toxin gene homologs from Russell's viper (Daboia russelii) using whole-genome sequencing data obtained from shed skin. When compared with the major venom proteins in Russell's viper studied previously, we found 45-100% sequence similarity between the venom proteins and their putative homologs in the skin...
2017: PeerJ
https://www.readbyqxmd.com/read/29229648/phosphorylation-of-the-unique-c-terminal-tail-of-the-alpha-isoform-of-the-scaffold-protein-sh2b1-controls-the-ability-of-sh2b1alpha-to-enhance-nerve-growth-factor-function
#9
Ray M Joe, Anabel Flores, Michael E Doche, Joel M Cline, Erik S Clutter, Paul B Vander, Heimo Riedel, Lawrence S Argetsinger, Christin Carter-Su
The scaffold protein SH2B1, a major regulator of body weight, is recruited to the receptors of multiple cytokines and growth factors, including nerve growth factor (NGF). The β isoform, but not the α isoform, of SH2B1 greatly enhances NGF-dependent neurite outgrowth of PC12 cells. Here we asked how the unique C-terminal tails of the α and β isoforms modulate SH2B1 function. We compared the actions of SH2B1α and SH2B1β to those of the N-terminal 631 amino acids shared by both isoforms. In contrast to the β-tail, the α-tail inhibited the ability of SH2B1 to both cycle through the nucleus and enhance NGF-mediated neurite outgrowth, gene expression, phosphorylation of Akt and PLCγ and autophosphorylation of the NGF receptor TrkA...
December 11, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29227174/gambogic-amide-a-selective-trka-agonist-does-not-improve-outcomes-from-traumatic-brain-injury-in-mice
#10
Maddison R Johnstone, Mujun Sun, Caroline J Taylor, Rhys D Brady, Brian L Grills, Jarrod E Church, Sandy R Shultz, Stuart J McDonald
OBJECTIVES: There is evidence that treatment with nerve growth factor (NGF) may reduce neuroinflammation and apoptosis after a traumatic brain injury (TBI). NGF is thought to exert its effects via binding to either TrkA or p75 neurotrophin receptors. This study aimed to investigate the effects of a selective TrkA agonist, gambogic amide (GA), on TBI pathology and outcomes in mice following lateral fluid percussion injury. METHODS: Male C57BL/6 mice were given either a TBI or sham injury, and then received subcutaneous injections of either 2 mg/kg of GA or vehicle at 1, 24, and 48 h post-injury...
December 11, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29226516/sost-an-lngfr-target-inhibits-the-osteogenic-differentiation-of-rat-ectomesenchymal-stem-cells
#11
Gang Li, Junyu Liu, Manzhu Zhao, Yingying Wang, Kun Yang, Chang Liu, Yong Xiao, Xiujie Wen, Luchuan Liu
OBJECTIVES: The aim of this study was to investigate whether sclerostin (SOST) regulates the osteogenic differentiation of rat ectomesenchymal stem cells (EMSCs) and whether SOST and low-affinity nerve growth factor receptor (LNGFR) regulate the osteogenic differentiation of EMSCs. MATERIALS AND METHODS: EMSCs were isolated from embryonic facial processes from an embryonic 12.5-day (E12.5d) pregnant Sprague-Dawley rat. LNGFR+ EMSCs and LNGFR- EMSCs were obtained by fluorescence-activated cell sorting and were subsequently induced to undergo osteogenic differentiation in vitro...
December 10, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/29225720/new-frontiers-in-molecular-and-imaging-research-on-evaluation-and-diagnosis-of-bladder-outlet-obstruction-in-women
#12
Laura Martinez, Rose Khavari
Purpose: Diagnosis of bladder outlet obstruction (BOO) often presents a challenge in female patients. Traditional diagnostic elements such as symptom history and urodynamic data are rarely clear cut in women. Therefore, we sought to review the current literature on diagnosis of female BOO, focusing on new frontiers in the realm of molecular markers and imaging modalities. Recent Findings: In addition to fluoroscopy in the setting of videourodynamics, ultrasound and MRI can augment the diagnosis and aid in therapeutic planning in certain etiologies of female BOO...
December 2017: Current Bladder Dysfunction Reports
https://www.readbyqxmd.com/read/29224006/epigenetic-regulation-of-the-promotor-region-of-vascular-endothelial-growth-factor-a-and-nerve-growth-factor-in-opioid-maintained-patients
#13
Adrian Groh, Kirsten Jahn, Alexandra Burkert, Alexandra Neyazi, Laura Schares, Eva Janke, Marie Rehme, Rilana Schuster, Thomas Hillemacher, Stefan Bleich, Helge Frieling, Annemarie Heberlein
AIMS: The nerve growth factor (NGF) and the vascular endothelial growth factor-A (VEGF-A) may be of importance for psychiatric diseases including substance use disorders. The aim of the study was to identify differences in the regulation of both neuropeptides via the DNA-methylation status of the promotor regions of NGF and VEGF-A in different forms of maintenance therapy for opioid dependence and the related stress regulation via the hypothalamic-pituitary-adrenal axis. METHODS: We compared methylation levels of opioid-dependent patients receiving treatment with diamorphine (n = 28) or levomethadone (n = 54) and similar levels in a healthy control group (n = 72)...
December 8, 2017: European Addiction Research
https://www.readbyqxmd.com/read/29222787/nerve-growth-factor-induced-angiogenesis-2-the-quail-chorioallantoic-membrane-assay
#14
Philip Lazarovici, Adi Lahiani, Galit Gincberg, Dikla Haham, Cezary Marcinkiewicz, Peter I Lelkes
The avian chorioallantoic membrane (CAM) is a simple, highly vascularized extraembryonic membrane, which performs multiple functions during embryonic development. Therefore, the models of chicken and quail assays represent robust experimental platforms to study angiogenesis, which reflects perturbation of the entire vascular tree. This experimental approach, when combined with fractal morphometry, is sensitive to changes in vascular branching pattern and density. Nerve growth factor is a neurotrophin promoting angiogenesis in CAM models...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222786/nerve-growth-factor-induced-angiogenesis-1-endothelial-cell-tube-formation-assay
#15
Philip Lazarovici, Adi Lahiani, Galit Gincberg, Dikla Haham, Arnon Fluksman, Ofra Benny, Cezary Marcinkiewicz, Peter I Lelkes
Nerve growth factor (NGF) is a neurotrophin promoting survival, proliferation, differentiation, and neuroprotection in the embryonal and adult nervous system. NGF also induces angiogenic effects in the cardiovascular system, which may be beneficial in engineering new blood vessels and for developing novel anti-angiogenesis therapies for cancer. Angiogenesis is a cellular process characterized by a number of events, including endothelial cell migration, invasion, and assembly into capillaries. In vitro endothelial tube formation assays are performed using primary human umbilical vein endothelial cells, human aortic endothelial cells, and other human or rodent primary endothelial cells isolated from the vasculature of both tumors and normal tissues...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222785/neuronal-cell-morphology-in-primary-cerebellar-granule-cells-using-high-content-analysis
#16
Nicholas Radio, Steven Frank
Neurite outgrowth, one of the underlying cellular processes that defines the development and functionality of the mammalian nervous system, is also a sensitive indicator of neuronal cell health. From screening libraries of putative neurotherapeutic compounds to analyzing the millions of environmental pollutants for which we have inadequate neurotoxicity safety data, the large volume of chemical compounds that require evaluation is a major obstacle for manual imaging and analysis methods. In this context, high-content analysis (HCA) has emerged as a sensitive and accurate method for detecting changes in neuronal cell morphology within a format applicable to screening large chemical libraries...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222774/preparation-of-adult-rat-sensory-neuron-cultures-and-their-application-to-growth-cone-turning-assays
#17
Christine A Webber, Douglas W Zochodne
The directional trajectory of growing peripheral nerve axons in the adult impacts their successful regeneration to denervated target tissues. Misdirected axons in neuromas, injured nerve trunks, or nerves with attempted repair diminish the success of regeneration. The behavior of adult rodent peripheral sensory neurons in vitro, in turn, is helpful in predicting axonal behavior in vivo. Here, we describe the adaptation of embryonic neuron growth cone turning assays, an important technique in developmental neurobiology, to adult rat sensory neurons...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222770/ocular-nerve-growth-factor-ngf-and-ngf-eye-drop-application-as-paradigms-to-investigate-ngf-neuroprotective-and-reparative-actions
#18
Paola Tirassa, Pamela Rosso, Angela Iannitelli
The eye is a central nervous system structure that is uniquely accessible to local treatment. Through the ocular surface, it is possible to access the retina, optic nerve, and brain. Animal models of retina degeneration or optic nerve crush could thus serve as tools to investigate whether and how factors, which are anterogradely or retrogradely transported through the optic nerve, might contribute to activate neuroprotection and eventually regeneration. Among these factors, nerve growth factor (NGF) plays a crucial role during development of the visual system, as well as during the entire life span, and in pathological conditions...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222266/impact-of-bone-disease-and-pain-in-thalassemia
#19
REVIEW
Antonio Piga
Conventional treatment of thalassemia, namely regular blood transfusion and iron chelation, improves perspectives and quality of life; however, successful treatment leads to more time in which long-term complications such as bone disease can develop. Thalassemia bone disease (TBD) is unique: all aspects, from bone anatomy and bone quality to mineral density, may be affected, with important morbidity including osteoporosis, fractures, spinal deformities, nerve compression, and pain. Clinical presentations include growth impairment, rickets-like features, back pain, spinal deformities, any sign of nerve compression, severe osteoporosis, and fragility fractures...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29221639/nerve-growth-factor-released-from-collagen-scaffolds-protects-axotomized-cholinergic-neurons-of-the-basal-nucleus-of-meynert-in-organotypic-brain-slices
#20
Bettina M Foidl, Buket Ucar, Alina Schwarz, Ana L Rebelo, Abhay Pandit, Christian Humpel
BACKGROUND: Alzheimeŕs disease is accompanied by cell death of cholinergic neurons, resulting in cognitive impairment and memory loss. Nerve growth factor (NGF) is the most potent protein to support survival of cholinergic neurons. New METHOD: Organotypic brain slices of the basal nucleus of Meynert (nBM) are a valuable tool to study cell death of axotomized cholinergic neurons, as well as protective effects of NGF added into the medium. The aim of the present study is to use collagen scaffolds crosslinked with polyethylineglycole and load with NGF to target delivery of NGF to organotypic nBM brain slices...
December 5, 2017: Journal of Neuroscience Methods
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