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https://www.readbyqxmd.com/read/28221817/neuroprotective-effect-of-omega-3-polyunsaturated-fatty-acids-in-the-6-ohda-model-of-parkinson-s-disease-is-mediated-by-a-reduction-of-inducible-nitric-oxide-synthase
#1
Marco Aurélio Mori, Ana Marcia Delattre, Bruno Carabelli, Claudia Pudell, Mariza Bortolanza, Pedro Vinícius Staziaki, Jesuí Vergilio Visentainer, Paula Fernandes Montanher, Elaine A Del Bel, Anete Curte Ferraz
OBJECTIVE: Parkinson's disease (PD) is characterized by deterioration of the nigrostriatal system and associated with chronic neuroinflammation. Glial activation has been associated with regulating the survival of dopaminergic neurons and is thought to contribute to PD through the release of proinflammatory and neurotoxic factors, such as reactive nitric oxide (NO) that triggers or exacerbates neurodegeneration in PD. Polyunsaturated fatty acids (PUFAs) exert protective effects, including antiinflammatory, antiapoptotic, and antioxidant activity, and may be promising for delaying or preventing PD by attenuating neuroinflammation and preserving dopaminergic neurons...
February 21, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28217890/cerebellar-hemangioblastoma-with-perivascular-pseudorosette-formation-and-glial-differentiation-a-case-report
#2
Jian Wang, Xu-Yong Lin, Xue-Shan Qiu, En-Hua Wang, Lian-He Yang, Juan-Han Yu
Hemangioblastoma is a well-circumscribed, highly vascular, lipid-rich and low-grade tumor of uncertain histogenesis. Its histopathological features have been well established. Herein, we present a case of cerebellar hemangioblastoma in a 43-year-old woman. Histologically, the tumor was predominantly composed of cellular areas showing eosinophilic or vacuolated stromal cells arranged in nests and sheets. Focally, conventional reticular areas could be seen. Additionally, in some areas, the stromal cells were arranged radially around blood vessels, exhibiting perivascular pseudorosette structures, which were similar mostly to those of ependymomas...
August 24, 2016: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28216621/dual-anti-ischemic-effects-of-rosmarinic-acid-n-butyl-ester-via-alleviation-of-dapk-p53-mediated-neuronal-damage-and-microglial-inflammation
#3
Lei Wu, Hong-Min Wang, Jin-Long Li, Hong-Xuan Feng, Wei-Min Zhao, Hai-Yan Zhang
The discovery of efficacious anti-ischemic drugs remains a challenge. Recently we have found that rosmarinic acid n-butyl ester (RABE), a derivative of rosmarinic acid, significantly protects SH-SY5Y cells against oxygen glucose deprivation (OGD)-induced cell death. In the present study we simultaneously investigated the effects of RABE on the two key players in the pathophysiology of cerebral ischemia, ischemic neuronal damage and microglial inflammation. Pretreatment with RABE (1, 10 μmol/L) dose-dependently attenuated OGD- or H2O2-induced reduction of the viability of SH-SY5Y neuroblastoma cells...
February 20, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28215987/accelerated-retinal-aging-in-pacap-knock-out-mice
#4
Andrea Kovács-Valasek, Krisztina Szabadfi, Viktória Dénes, Bálint Szalontai, Andrea Tamás, Péter Kiss, Aliz Szabó, Gyorgy Setalo, Dóra Reglődi, Robert Gábriel
Pituitary adenylate cyclase activating polypeptide (PACAP) is a neurotrophic and neuroprotective peptide. PACAP and its receptors are widely distributed in the retina. A number of reports provided evidence that PACAP is neuroprotective in retinal degenerations. The current study compared retina cell type-specific differences in young (3-4months) and aged adults (14-16months), of wild-type (WT) mice and knock-out (KO) mice lacking endogenous PACAP production during the course of aging. Histological, immunocytochemical and Western blot examinations were performed...
February 13, 2017: Neuroscience
https://www.readbyqxmd.com/read/28213069/a-pilot-study-of-cell-mediated-gene-therapy-for-spinal-cord-injury-in-mini-pigs
#5
Islamov Rustem Robertovich, Sokolov Mikhail Evgenyevich, Bashirov Farid Vagizovich, Fadeev Filip Olegovich, Shmarov Maxim Michaylovich, Naroditskiy Boris Savelyevich, Povysheva Tatyana Vyacheslavovna, Shaymardanova Gulnara Ferdinantovna, Yakupov Radik Albertovich, Chelyshev Yuri Aleksandrovich, Lavrov Igor Aleksandrovich
Currently, in clinical practice there is no efficient way to overcome the sequences of neurodegeneration after spinal cord traumatic injury. Using a new experimental model of spinal cord contusion injury on miniature pigs, we proposed to deliver therapeutic genes encoding vascular endothelial growth factor (VEGF), glial cell line-derived neurotrophic factor (GDNF) and neural cell adhesion molecule (NCAM) to the damaged area, using umbilical cord blood mononuclear cells (UCBC). In this study, genetically engineered UCBC (2×10(6) cells in 200 ml of saline) were injected intrathecally to mini-pigs 10days after SCI...
February 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28212323/low-intensity-extracorporeal-shock-wave-therapy-enhances-brain-derived-neurotrophic-factor-expression-through-perk-atf4-signaling-pathway
#6
Bohan Wang, Hongxiu Ning, Amanda B Reed-Maldonado, Jun Zhou, Yajun Ruan, Tie Zhou, Hsun Shuan Wang, Byung Seok Oh, Lia Banie, Guiting Lin, Tom F Lue
Low-intensity extracorporeal shock wave therapy (Li-ESWT) is used in the treatment of erectile dysfunction, but its mechanisms are not well understood. Previously, we found that Li-ESWT increased the expression of brain-derived neurotrophic factor (BDNF). Here we assessed the underlying signaling pathways in Schwann cells in vitro and in penis tissue in vivo after nerve injury. The result indicated that BDNF were significantly increased by the Li-ESWT after nerve injury, as well as the expression of BDNF in Schwann cells (SCs, RT4-D6P2T) in vitro...
February 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28210976/regenerative-medicine-for-parkinson-s-disease-using-differentiated-nerve-cells-derived-from-human-buccal-fat-pad-stem-cells
#7
Haruka Takahashi, Hiroshi Ishikawa, Akira Tanaka
The purpose of this study was to evaluate the utility of human adipose stem cells derived from the buccal fat pad (hBFP-ASCs) for nerve regeneration. Parkinson's disease (PD) is a neurodegenerative disorder characterized by progressive death of dopaminergic neurons. PD is a candidate disease for cell replacement therapy because it has no fundamental therapeutic methods. We examined the properties of neural-related cells induced from hBFP-ASCs as a cell source for PD treatment. hBFP-ASCs were cultured in neurogenic differentiation medium for about 2 weeks...
February 16, 2017: Human Cell
https://www.readbyqxmd.com/read/28204814/fisetin-regulates-astrocyte-migration-and-proliferation-in%C3%A2-vitro
#8
Nan Wang, Fang Yao, Ke Li, Lanlan Zhang, Guo Yin, Mingjun Du, Bingyi Wu
Fisetin (3,3',4',7-tetrahydroxyflavone) is a plant flavonol found in fruits and vegetables that has been reported to inhibit migration and proliferation in several types of cancer. Reactive astrogliosis involves astrocyte migration and proliferation, and contributes to the formation of glial scars in central nervous system (CNS) disorders. However, the effect of fisetin on the migration and proliferation of astrocytes remains unclear. In this study, we found that fisetin inhibited astrocyte migration in a scratch-wound assay and diminished the phosphorylation of focal adhesion kinase (FAK; Tyr576/577 and paxillin (Tyr118)...
February 15, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28203148/dopamine-d1-receptor-immunoreactivity-on-fine-processes-of-gfap-positive-astrocytes-in-the-substantia-nigra-pars-reticulata-of-adult-mouse
#9
Katsuhiro Nagatomo, Sechiko Suga, Masato Saitoh, Masahito Kogawa, Kazuto Kobayashi, Yoshio Yamamoto, Katsuya Yamada
Substantia nigra pars reticulata (SNr), the major output nucleus of the basal ganglia, receives dopamine from dendrites extending from dopaminergic neurons of the adjacent nucleus pars compacta (SNc), which is known for its selective degeneration in Parkinson's disease. As a recipient for dendritically released dopamine, the dopamine D1 receptor (D1R) is a primary candidate due to its very dense immunoreactivity in the SNr. However, the precise location of D1R remains unclear at the cellular level in the SNr except for that reported on axons/axon terminals of presumably striatal GABAergic neurons...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/28199885/evaluation-of-polyesteramide-pea-and-polyester-plga-microspheres-as-intravitreal-drug-delivery-systems-in-albino-rats
#10
Tobias Peters, Seong-Woo Kim, Vinicius Castro, Krunoslav Stingl, Torsten Strasser, Sylvia Bolz, Ulrich Schraermeyer, George Mihov, MengMeng Zong, Vanessa Andres-Guerrero, Rocio Herrero Vanrell, Aylvin A Dias, Neil R Cameron, Eberhart Zrenner
PURPOSE: To study the suitability of injectable microspheres based on poly(ester amide) (PEA) or poly lactic-co-glycolic acid (PLGA) as potential vehicles for intravitreal drug delivery in rat eyes. Dexamethasone-loaded PEA microspheres (PEA + DEX) were also evaluated. METHODS: Forty male Sprague Dawley rats were divided into four groups that received different intravitreally injected microspheres: PEA group (n = 12); PLGA group (n = 12); PEA + DEX group (n = 8); and control group (no injection, n = 8)...
February 7, 2017: Biomaterials
https://www.readbyqxmd.com/read/28197071/chemosensitivity-of-u251-cells-to-the-co-treatment-of-d-penicillamine-and-copper-possible-implications-on-wilson-disease-patients
#11
Meghri Katerji, Kassem Barada, Mustapha Jomaa, Firas Kobeissy, Ahmad-Kareem Makkawi, Wassim Abou-Kheir, Julnar Usta
D-Penicillamine (PA), a copper chelator, and one of the recommended drugs for treatment of Wilson disease (WD) has been reported to worsen the symptoms of patients with neurologic presentations. However, the cause of this paradoxical response has not been fully elucidated and requires further investigations. Accordingly, we have studied the in vitro effect of Copper (Cu) and/or PA treatment on human glioblastoma U251 cells as an in vitro model of Cu cytotoxicity. Treatment of U251 cells with either Cu or PA exerted no significant effect on their morphology, viability or ROS level...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28194003/lower-levels-of-the-glial-cell-marker-tspo-in-drug-naive-first-episode-psychosis-patients-as-measured-using-pet-and-11-c-pbr28
#12
K Collste, P Plavén-Sigray, H Fatouros-Bergman, P Victorsson, M Schain, A Forsberg, N Amini, S Aeinehband, S Erhardt, C Halldin, L Flyckt, L Farde, S Cervenka
Several lines of evidence are indicative of a role for immune activation in the pathophysiology of schizophrenia. Nevertheless, studies using positron emission tomography (PET) and radioligands for the translocator protein (TSPO), a marker for glial activation, have yielded inconsistent results. Whereas early studies using a radioligand with low signal-to-noise in small samples showed increases in patients, more recent studies with improved methodology have shown no differences or trend-level decreases. Importantly, all patients investigated thus far have been on antipsychotic medication, and as these compounds may dampen immune cell activity, this factor limits the conclusions that can be drawn...
February 14, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28192150/effect-of-artemisinin-on-neuropathic-pain-mediated-by-p2x4-receptor-in-dorsal-root-ganglia
#13
Mofeng Ying, Hui Liu, Tengling Zhang, Chenxu Jiang, Yingxin Gong, Bing Wu, Lifang Zou, Zhihua Yi, Shenqiang Rao, Guilin Li, Chunping Zhang, Tianyu Jia, Shanhong Zhao, Huilong Yua, Liran Shi, Lin Li, Shangdong Liang, Shuangmei Liu
Neuropathic pain is a type of chronic pain caused by nervous system damage and dysfunction. The pathogenesis of chronic pain is complicated, and there are no effective therapies for neuropathic pain. Studies show that the P2X4 receptor expressed in the satellite glial cells (SGCs) of dorsal root ganglia (DRG) is related to neuropathic pain. Artemisinin is a monomeric component extracted from traditional Chinese medicine and has a variety of important pharmacological effects and potential applications. This study observed the effect of artemisinin on neuropathic pain and delineated its possible mechanism...
February 9, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28185615/clinical-study-of-neuroregen-scaffold-combined-with-human-mesenchymal-stem-cells-for-the-repair-of-chronic-complete-spinal-cord-injury
#14
Yannan Zhao, Fengwu Tang, Guang Han, Nuo Wang, Na Yin, Bing Chen, Xianfeng Jiang, Chen Yun, Wanjun Han, Changyu Zhao, Shixiang Cheng, Zhifeng Xiao, Sai Zhang, Jianwu Dai
Regeneration of damaged neurons and recovery of sensation and motor function after complete spinal cord injury (SCI) are challenging. We previously developed a collagen scaffold, NeuroRegen scaffold, to promote axonal growth along collagen fibers and inhibit glial scar formation after SCI. When functionalized with multiple biomolecules, this scaffold promoted neurological regeneration and functional recovery in animals with SCI. In this study, eight patients with chronic complete SCI were enrolled to examine the safety and efficacy of implanting NeuroRegen scaffold with human umbilical cord mesenchymal stem cells (MSCs)...
February 9, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28182766/cd24-expression-does-not-affect-dopamine-neuronal-survival-in-a-mouse-model-of-parkinson-s-disease
#15
Simon R W Stott, Shaista Hayat, Tom Carnwath, Shaady Garas, Jonathan P Sleeman, Roger A Barker
Parkinson's disease (PD) is a progressive neurodegenerative condition that is characterised by the loss of specific populations of neurons in the brain. The mechanisms underlying this selective cell death are unknown but by using laser capture microdissection, the glycoprotein, CD24 has been identified as a potential marker of the populations of cells that are affected in PD. Using in situ hybridization and immunohistochemistry on sections of mouse brain, we confirmed that CD24 is robustly expressed by many of these subsets of cells...
2017: PloS One
https://www.readbyqxmd.com/read/28182061/intraoperative-squash-cytology-and-histology-of-giant-cell-ependymoma-a-diagnostic-dilemma
#16
Ebru Cakir, Ulku Kucuk, Ayca Ersen, Emel E Pala, Mehmet Senoglu, Ali O Binatli, Zubeyde Yildirim
Giant cell ependymomas (GCE) are extremely rare tumors, with 24 cases described in the literature. Squash cytology is a rapid, reliable, simple technique for intraoperative consultation in neurosurgical practice. We describe a rare case of GCE arising at level of L4-L5 in a 66-year-old woman and discuss the cytologic/histologic features. Intraoperative smears were highly cellular with a prominent fibrillary background and exhibited papillary structures and sheets composed of highly atypical and bizarre cells...
January 2017: Journal of Cytology
https://www.readbyqxmd.com/read/28181394/effects-of-silver-nanoparticles-on-the-interactions-of-neuron-and-glia-like-cells-toxicity-uptake-mechanisms-and-lysosomal-tracking
#17
I-Lun Hsiao, Yi-Kong Hsieh, Chun-Yu Chuang, Chu-Fang Wang, Yuh-Jeen Huang
Silver nanoparticles (AgNPs) are commonly used nanomaterials in consumer products. Previous studies focused on its effects on neurons; however, little is known about their effects and uptake mechanisms on glial cells under normal or activated states. Here, ALT astrocyte-like, BV-2 microglia and differentiated N2a neuroblastoma cells were directly or indirectly exposed to 10 nm AgNPs using mono- and co-culture system. A lipopolysaccharide (LPS) was pretreated to activate glial cells before AgNP treatment for mimicking NP exposure under brain inflammation...
February 9, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28181068/laminar-degeneration-of-frontal-and-temporal-cortex-in-parkinson-disease-dementia
#18
Richard A Armstrong
To investigate cortical laminar degeneration in Parkinson's disease (PD) with dementia (PDD). Changes in density of α-synuclein-immunoreactive Lewy bodies (LB), Lewy neurites (LN), and Lewy grains (LG) together with surviving neurons, abnormally enlarged neurons (EN), vacuoles, and glial cell nuclei were measured across cortical laminae of frontal and temporal cortex in fifteen cases of PDD using quantitative methods and polynomial curve-fitting. Most frequently, LB and LN were distributed across all laminae, while LG were distributed in upper cortical laminae...
February 8, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28178213/neurotrophic-factors-ngf-gdnf-and-ntn-selectively-modulate-hsv1-and-hsv2-lytic-infection-and-reactivation-in-primary-adult-sensory-and-autonomic-neurons
#19
Andy A Yanez, Telvin Harrell, Heather J Sriranganathan, Angela M Ives, Andrea S Bertke
Herpes simplex viruses (HSV1 and HSV2) establish latency in peripheral ganglia after ocular or genital infection, and can reactivate to produce different patterns and frequencies of recurrent disease. Previous studies showed that nerve growth factor (NGF) maintains HSV1 latency in embryonic sympathetic and sensory neurons. However, adult sensory neurons are no longer dependent on NGF for survival, some populations cease expression of NGF receptors postnatally, and the viruses preferentially establish latency in different populations of sensory neurons responsive to other neurotrophic factors (NTFs)...
February 7, 2017: Pathogens
https://www.readbyqxmd.com/read/28176642/granulocyte-colony-stimulating-factor-attenuates-blood-brain-barrier-damage-and-improves-cognitive-function-in-spontaneously-hypertensive-rats
#20
Xin Wei, Yan Xu, Yanling Jin, Hongliang Feng, Shouquan Dong
Cerebral small vessel diseases (CSVDs) always coincide with endothelial dysfunction and blood-brain barrier (BBB) damage. Granulocyte-colony stimulating factor (G-CSF) can play a neuroprotective role in many neurological diseases. We investigated whether G-CSF exerts positive effects in spontaneously hypertensive rats (SHRs), a rat model of CSVD. Twenty-four-week-old SHRs, displaying the early histopathological changes of CSVD, received daily administrations of either G-CSF (50μg/kg) or saline for 7 days. The novel object recognition test was then conducted after treatment...
February 7, 2017: CNS & Neurological Disorders Drug Targets
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