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Myelin basic protein

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https://www.readbyqxmd.com/read/29308618/co-transplantation-of-human-neurotrophic-factor-secreting-cells-and-adipose-derived-stem-cells-in-rat-model-of-multiple-sclerosis
#1
Shahnaz Razavi, Nazem Ghasemi, Mohammad Mardani, Hossein Salehi
OBJECTIVES: The presence of neurotrophic factors is critical for regeneration of neural lesions. Here, we transplanted combination of neurotrophic factor secreting cells (NTF-SCs) and human adipose derived stem cells (hADSCs) into a lysolecithin model of multiple sclerosis (MS) and determined the myelinization efficiency of these cells. MATERIALS AND METHODS: In this experimental study, 50 adult rats were randomly divided into five groups: control, lysolecithin, vehicle, hADSCs transplantation and NTF-SCs/ hADSCs co-transplantation group...
April 2018: Cell Journal
https://www.readbyqxmd.com/read/29302192/identification-of-epigenetically-altered-genes-and-potential-gene-targets-in-melanoma-using-bioinformatic-methods
#2
Honghao Duan, Ke Jiang, Dengke Wei, Lijun Zhang, Deliang Cheng, Min Lv, Yuben Xu, Aimin He
This study aimed to analyze epigenetically and genetically altered genes in melanoma to get a better understanding of the molecular circuitry of melanoma and identify potential gene targets for the treatment of melanoma. The microarray data of GSE31879, including mRNA expression profiles (seven melanoma and four melanocyte samples) and DNA methylation profiles (seven melanoma and five melanocyte samples), were downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) and differentially methylated positions (DMPs) were screened using the linear models for microarray data (limma) package in melanoma compared with melanocyte samples...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29259700/neuroprotective-effects-of-human-umbilical-cord-derived-mesenchymal-stem-cells-on-periventricular-leukomalacia-like-brain-injury-in-neonatal-rats
#3
Chikako Morioka, Motohiro Komaki, Atsuko Taki, Izumi Honda, Naoki Yokoyama, Kengo Iwasaki, Sachiko Iseki, Tomohiro Morio, Ikuo Morita
Background: Periventricular leukomalacia (PVL) is a type of multifactorial brain injury that causes cerebral palsy in premature infants. To date, effective therapies for PVL have not been available. In this study, we examined whether mesenchymal stem cells (MSCs) possess neuroprotective property in a lipopolysaccharide (LPS)-induced neonatal rat PVL-like brain injury. Methods: Human umbilical cord-derived MSCs (UCMSCs) were used in this study. Four-day-old rats were intraperitoneally injected with LPS (15 mg/kg) to cause the PVL-like brain injury and were treated immediately after the LPS-injection with UCMSCs, conditioned medium prepared from MSCs (UCMSC-CM) or interferon-gamma (IFN-γ)-pretreated MSC (IFN-γ-UCMSC-CM)...
2017: Inflammation and Regeneration
https://www.readbyqxmd.com/read/29251113/microarray-expression-profile-of-lncrnas-and-mrnas-in-rats-with-traumatic-brain-injury-after-a2b5-cell-transplantation
#4
Qiang Lyu, Zi-Bin Zhang, Song-Jun Fu, Liu-Lin Xiong, Jing Liu, Ting-Hua Wang
Traumatic brain injury (TBI) may cause neurological damage, but an effective therapy and the associated mechanisms of action have not yet been elucidated. A TBI model was established using the modified Feeney method. A2B5+ cells, an oligodendroglial progenitor, were acquired from induced pluripotent stem cells (iPSCs) by mouse embryonic fibroblasts and were transplanted into the injured site. The neurological severity score (NSS) was recorded on 3 d, 7 d, 11 d, 15 d, and 19 d. Seven days after transplantation, oligodendrocytes 2 (Olig2) and myelin basic protein (MBP) were detected by immunohistochemistry (IHC) and Western blot (WB), and long noncoding RNAs (lncRNAs) and messenger RNAs (mRNAs) were screened by microarray technology...
October 2017: Cell Transplantation
https://www.readbyqxmd.com/read/29246870/metabolic-defects-in-multiple-sclerosis
#5
REVIEW
Reginald C Adiele, Chiedukam A Adiele
Brain injuries in multiple sclerosis (MS) involve immunopathological, structural and metabolic defects on myelin sheath, oligodendrocytes (OLs), axons and neurons suggesting that different cellular mechanisms ultimately result in the formation of MS plaques, demyelination, inflammation and brain damage. Bioenergetics, oxygen and ion metabolism dominate the metabolic and biochemical pathways that maintain neuronal viability and impulse transmission which directly or indirectly point to mitochondrial integrity and adenosine triphosphate (ATP) availability indicating the involvement of mitochondria in the pathogenesis of MS...
December 13, 2017: Mitochondrion
https://www.readbyqxmd.com/read/29228390/altered-brain-morphology-after-focal-radiation-reveals-impact-of-off-target-effects-implications-for-white-matter-development-and-neurogenesis
#6
Kiran G Beera, Yu-Qing Li, Jun Dazai, James Stewart, Shannon Egan, Mashal Ahmed, C Shun Wong, David A Jaffray, Brian J Nieman
Background: Children with brain tumors treated with cranial radiation therapy (RT) often exhibit cognitive late effects, commonly associated with reduced white matter (WM) volume and decreased neurogenesis. The impact of radiation damage in particular regions or tissues on brain development as a whole has not been elucidated. Methods: We delivered whole-brain or focal radiation (8 Gy single dose) to infant mice. Focal treatments targeted white matter (anterior commissure), neuronal (olfactory bulbs), or neurogenic (subventricular zone) regions...
November 2, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29224959/metabolomics-approaches-in-experimental-allergic-encephalomyelitis
#7
S Battini, C Bund, F M Moussallieh, A E Çiçek, J De Sèze, I J Namer
A myelin basic protein (MBP)-induced experimental allergic encephalomyelitis (EAE) involves paraplegia due to a reversible thoracolumbar spinal cord impairment. The aims of this study were thus to find significant metabolic biomarkers of inflammation and identify the site of inflammation in the central nervous system (CNS) during the acute signs in of the disease using metabolomics. All the EAE samples were associated with higher levels of lactate, ascorbate, glucose and amino acids, and decreased level of N-acetyl-aspartate (NAA) compared to the control group...
December 2, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29222800/primary-motor-neuron-culture-to-promote-cellular-viability-and-myelination
#8
Jun-Kyo Francis Suh, Sujin Hyung
A culture system that can recapitulate myelination in vitro will not only help us to better understand the mechanism of myelination and demyelination but also identify possible therapeutic interventions for treating demyelinating diseases. Here, we introduce a simple and reproducible myelination culture system using mouse motor neurons (MNs) and Schwann cells (SCs). Dissociated motor neurons are plated on a feeder layer of SCs, which interact with and wrap around the axons of MNs as they differentiate in culture...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29216635/deficits-in-docosahexaenoic-acid-accrual-during-adolescence-reduce-rat-forebrain-white-matter-microstructural-integrity-an-in-vivo-diffusion-tensor-imaging-study
#9
Robert K McNamara, Jennifer D Schurdak, Ruth H Asch, Bart D Peters, Diana M Lindquist
Neuropsychiatric disorders that frequently initially emerge during adolescence are associated with deficits in the omega-3 (n-3) fatty acid docosahexaenoic acid (DHA), elevated proinflammatory signaling, and regional reductions in white matter integrity (WMI). This study determined the effects of altering brain DHA accrual during adolescence on WMI in the rat brain by diffusion tensor imaging (DTI), and investigated the potential mediating role of proinflammatory signaling. During periadolescent development, male rats were fed a diet deficient in n-3 fatty acids (DEF, n = 20), a fish oil-fortified diet containing preformed DHA (FO, n = 20), or a control diet (CON, n = 20)...
December 8, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/29216561/design-synthesis-and-evaluation-of-an-anthraquinone-derivative-conjugated-to-myelin-basic-protein-immunodominant-mbp85-99-epitope-towards-selective-immunosuppression
#10
Anthi Tapeinou, Efstathia Giannopoulou, Carmen Simal, Bjarke E Hansen, Haralabos Kalofonos, Vasso Apostolopoulos, Alexios Vlamis-Gardikas, Theodore Tselios
Anthraquinone type compounds, especially di-substituted amino alkylamino anthraquinones have been widely studied as immunosuppressants. The anthraquinone ring is part of mitoxandrone that has been used for the treatment of multiple sclerosis (MS) and several types of tumors. A desired approach for the treatment of MS would be the immunosuppression and elimination of specific T cells that are responsible for the induction of the disease. Herein, the development of a peptide compound bearing an anthraquinone derivative with the potential to specifically destroy the encephalitogenic T cells responsible for the onset of MS is described...
November 24, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29203794/behavioral-impairment-in-shati-nat8l-knockout-mice-via-dysfunction-of-myelination-development
#11
Kazuyuki Sumi, Kyosuke Uno, Hiroshi Noike, Takenori Tomohiro, Yasumaru Hatanaka, Yoko Furukawa-Hibi, Toshitaka Nabeshima, Yoshiaki Miyamoto, Atsumi Nitta
We have identified SHATI/NAT8L in the brain of mice treated with methamphetamine. Recently, it has been reported that SHATI is N-acetyltransferase 8-like protein (NAT8L) that produces N-acetylaspatate (NAA) from aspartate and acetyl-CoA. We have generated SHATI/NAT8L knockout (Shati -/-) mouse which demonstrates behavioral deficits that are not rescued by single NAA supplementation, although the reason for which is still not clarified. It is possible that the developmental impairment results from deletion of SHATI/NAT8L in the mouse brain, because NAA is involved in myelination through lipid synthesis in oligodendrocytes...
December 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29199131/combined-therapy-involving-electroacupuncture-and-treadmill-exercise-attenuates-demyelination-in-the-corpus-callosum-by-stimulating-oligodendrogenesis-in-a-rat-model-of-neonatal-hypoxia-ischemia
#12
Malk Eun Pak, Da Hee Jung, Hong Ju Lee, Myung Jun Shin, Soo-Yeon Kim, Yong Beom Shin, Young Ju Yun, Hwa Kyoung Shin, Byung Tae Choi
We investigated whether electroacupuncture (EA) and treadmill (TM) exercise improve behaviors related to motor and memory dysfunction in a cerebral palsy-like rat model via activation of oligodendrogenesis. A neonatal hypoxia-ischemia model was created using Sprague-Dawley rats (P7), and these underwent EA stimulation and treadmill training from 3 to 5weeks after hypoxia-ischemia induction. EA treatment was delivered via electrical stimulation (2Hz, 1mA) at two acupoints, Baihui (GV20) and Zusanli (ST36). Behavioral tests showed that EA alleviated motor dysfunction caused by hypoxia-ischemia on a rotarod test, and TM exercise alleviated motor and memory dysfunction seen on cylinder and passive avoidance tests...
February 2018: Experimental Neurology
https://www.readbyqxmd.com/read/29198746/valproic-acid-attenuates-inflammation-of-optic-nerve-and-apoptosis-of-retinal-ganglion-cells-in-a-rat-model-of-optic-neuritis
#13
Qiang Liu, Haining Li, Juan Yang, Xiaoyan Niu, Chunmei Zhao, Li Zhao, Zhenhai Wang
AIMS: Optic neuritis (ON) is an inflammatory disease of the optic nerve, which often occurs in patients with multiple sclerosis (MS) and leads to retinal ganglion cell (RGC) death and even severe visual loss. Valproic acid (VPA) is a short-chain branched fatty acid with anti-epileptic, neuro-protective and anti-inflammatory effects. Here, we examined the effects of VPA in experimental autoimmune encephalomyelitis (EAE) rats and explored the underlying mechanisms. MAIN METHODS: EAE was induced by subcutaneous injection with myelin basic protein, emulsified with complete Freund's adjuvant and Mycobacterium tuberculosis H37Ra into the Lewis rats...
December 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29191963/competitive-apnea-and-its-effect-on-the-human-brain-focus-on-the-redox-regulation-of-blood-brain-barrier-permeability-and-neuronal-parenchymal-integrity
#14
Anthony R Bain, Philip N Ainslie, Ryan L Hoiland, Otto F Barak, Ivan Drvis, Mike Stembridge, Douglas M MacLeod, Jane McEneny, Benjamin S Stacey, Eduoard Tuaillon, Nicola Marchi, Alexis Fayd'Herbe De Maudave, Zeljko Dujic, David B MacLeod, Damian M Bailey
Static apnea provides a unique model that combines transient hypertension, hypercapnia, and severe hypoxemia. With apnea durations exceeding 5 min, the purpose of the present study was to determine how that affects cerebral free-radical formation and the corresponding implications for brain structure and function. Measurements were obtained before and following a maximal apnea in 14 divers with transcerebral exchange kinetics, measured as the product of global cerebral blood flow (duplex ultrasound) and radial arterial to internal jugular venous concentration differences (a-vD)...
November 30, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29190648/anterior-chamber-associated-immune-deviation-used-as-a-neuroprotective-strategy-in-rats-with-spinal-cord-injury
#15
Beatriz Pineda-Rodriguez, Diana Toscano-Tejeida, Elisa García-Vences, Roxana Rodriguez-Barrera, Adrian Flores-Romero, Daniela Castellanos-Canales, Gabriel Gutierrez-Ospina, Laura Castillo-Carvajal, Esperanza Meléndez-Herrera, Antonio Ibarra
The inflammatory response is probably one of the main destructive events occurring after spinal cord injury (SCI). Its progression depends mostly on the autoimmune response developed against neural constituents. Therefore, modulation or inhibition of this self-reactive reaction could help to reduce tissue destruction. Anterior chamber associated immune deviation (ACAID) is a phenomenon that induces immune-tolerance to antigens injected into the eye´s anterior chamber, provoking the reduction of such immune response...
2017: PloS One
https://www.readbyqxmd.com/read/29187683/-efficacy-of-high-dose-steroid-pulse-therapy-for-anti-galactocerebroside-antibody-positive-combined-central-and-peripheral-demyelination
#16
Masashi Hoshino, Yu Suzuki, Hisanao Akiyama, Kouji Yamada, Sayuri Shima, Tatsuro Mutoh, Yasuhiro Hasegawa
A 59-year-old man had been admitted to another hospital because of diplopia and thirst at the beginning of March and was diagnosed with diabetic ketoacidosis. He was referred to our hospital because he had limb weakness, dysarthria, and bilateral sensory impairment of the upper limbs, which worsened rapidly from the middle of March, although plasma glucose had been well controlled after the initiation of insulin therapy in the previous hospital. Contrast spinal MRI in our hospital revealed hyperintense lesions at the level of C4 to C5 and T10...
November 28, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/29182149/multi-scale-multi-modal-analysis-uncovers-complex-relationship-at-the-brain-tissue-implant-neural-interface-new-emphasis-on-the-biological-interface
#17
Nicholas J Michelson, Alberto L Vazquez, James R Eles, Joseph William Salatino, Erin K Purcell, Jordan John Williams, Tracy Cui, Takashi D Yoshida Kozai
Implantable neural electrode devices are important tools for neuroscience research and have an increasing range of clinical applications. However, the intricacies of the biological response after implantation, and their ultimate impact on recording performance, remain challenging to elucidate. Establishing a relationship between the neurobiology and chronic recording performance is confounded by technical challenges related to traditional electrophysiological, material, and histological limitations. This can greatly impact the interpretations of results pertaining to device performance and tissue health surrounding the implant...
November 28, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29175488/influence-of-the-epileptiform-discharge-microenvironment-on-the-differentiation-of-oligodendrocyte-precursor-cells
#18
Yue Wang, Liming Liu, Hengsheng Chen, Li Cheng, Li Jiang
The use of related cell cultured models to investigate the genesis and development of epilepsy is beneficial for exploring the mechanism of epileptogenesis. Recent reports have described the myelination damage caused by epilepsy in animal models; however, limited reports have focused on the influence of epilepsy on remyelination in vitro. The current study was designed to investigate the effect of the epileptiform discharge microenvironment on the differentiation of oligodendrocyte precursor cells (OPCs). Neurons with epileptiform discharge released more glutamic acid than normal neurons, which was detected by HPLC...
November 23, 2017: Brain Research
https://www.readbyqxmd.com/read/29174019/collar-occupancy-a-new-quantitative-imaging-tool-for-morphometric-analysis-of-oligodendrocytes
#19
Filipa Bouçanova, André Filipe Maia, Andrea Cruz, Val Millar, Inês Mendes Pinto, João Bettencourt Relvas, Helena Sofia Domingues
BACKGROUND: Oligodendrocytes (OL) are the myelinating cells of the central nervous system. OL differentiation from oligodendrocyte progenitor cells (OPC) is accompanied by characteristic stereotypical morphological changes. Quantitative imaging of those morphological alterations during OPC differentiation is commonly used for characterization of new molecules in cell differentiation and myelination and screening of new pro-myelinating drugs. Current available imaging analysis methods imply a non-automated morphology assessment, which is time-consuming and prone to user subjective evaluation...
November 21, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29163523/interleukin-5-mediates-parasite-induced-protection-against-experimental-autoimmune-encephalomyelitis-association-with-induction-of-antigen-specific-cd4-cd25-t-regulatory-cells
#20
Giang T Tran, Paul L Wilcox, Lindsay A Dent, Catherine M Robinson, Nicole Carter, Nirupama D Verma, Bruce M Hall, Suzanne J Hodgkinson
Objective: To examine if the protective effect of parasite infection on experimental autoimmune encephalomyelitis (EAE) was due to interleukin (IL)-5, a cytokine produced by a type-2 response that induces eosinophilia. We hypothesize that, in parasite infections, IL-5 also promotes expansion of antigen-specific T regulatory cells that control autoimmunity. Methods: Nippostrongylus brasiliensis larvae were used to infect Lewis rats prior to induction of EAE by myelin basic protein...
2017: Frontiers in Immunology
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