Search results for " Myelin Sheath"

showing 2 items of 2 documents

Exacerbated experimental autoimmune encephalomyelitis in mast-cell-deficient KitW-sh/W-sh mice

2011

Mast cell (MC)-deficient c-Kit mutant Kit(W/W-v) mice are protected against experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis, suggesting a detrimental role for MCs in this disease. To further investigate the role of MCs in EAE, we took advantage of a recently characterized model of MC deficiency, Kit(W-sh/W-sh). Surprisingly, we observed that myelin oligodendrocyte glycoprotein (MOG)(35-55)-induced chronic EAE was exacerbated in Kit(W-sh/W-sh) compared with Kit(+/+) mice. Kit(W-sh/W-sh) mice showed more inflammatory foci in the central nervous system (CNS) and increased T-cell response against myelin. To understand whether the discrepant results obtaine…

Central Nervous SystemT-LymphocytesEncephalomyelitisexperimental autoimmune encephalomyelitismast cellsInbred C57BLSeverity of Illness IndeximmunologyMiceMyelinPeptide Fragmentimmune system diseasesMast CellEncephalomyelitisMyelin SheathbiologyExperimental autoimmune encephalomyelitisMast cellProto-Oncogene Proteins c-kitPhenotypemedicine.anatomical_structuremastcell-deficient miceBone Marrow Cellgenetics/immunology/pathology/prevention /&/ controlc-kit mutationsc-kit mutations; experimental autoimmune encephalomyelitis; granulocytes; mast cellsEncephalomyelitis Autoimmune ExperimentalCentral nervous systemBone Marrow CellsPathology and Forensic MedicineMyelin oligodendrocyte glycoproteinExperimentalAnimals Antibody Formation Bone Marrow Cells; pathology Central Nervous System; pathology Encephalomyelitis; Autoimmune; Experimental; genetics/immunology/pathology/prevention /&/ control Glycoproteins; immunology Granulocytes; pathology Immunization Mast Cells; pathology Mice Mice; Inbred C57BL Mutation Myelin Sheath; immunology Myelin-Oligodendrocyte Glycoprotein Peptide Fragments; immunology Phenotype Proto-Oncogene Proteins c-kit; deficiency/genetics/metabolism Severity of Illness Index T-Lymphocytes; pathologyAntigendeficiency/genetics/metabolismmedicineAnimalsMolecular BiologyGlycoproteinsAnimalMultiple sclerosismast-cell-deficient Kit W-sh/W-sh mice.Experimental autoimmune encephalomyelitis; mast-cell-deficient Kit W-sh/W-sh mice.GranulocytegranulocytesCell Biologymedicine.diseaseEncephalomyelitiExperimental autoimmune encephalomyelitiPeptide FragmentsMice Inbred C57BLT-LymphocyteAntibody FormationMutationImmunologybiology.proteinexperimental autoimmune encephalomyelitis; mastcell-deficient mice; mast cellspathologyImmunizationMyelin-Oligodendrocyte GlycoproteinGlycoproteinAutoimmuneLaboratory Investigation
researchProduct

Transport of the major myelin proteolipid protein is directed by VAMP3 and VAMP7.

2011

CNS myelination by oligodendrocytes requires directed transport of myelin membrane components and a timely and spatially controlled membrane expansion. In this study, we show the functional involvement of the R-solubleN-ethylmaleimide-sensitive factor attachment protein receptor (R-SNARE) proteins VAMP3/cellubrevin and VAMP7/TI-VAMP in myelin membrane trafficking. VAMP3 and VAMP7 colocalize with the major myelin proteolipid protein (PLP) in recycling endosomes and late endosomes/lysosomes, respectively. Interference with VAMP3 or VAMP7 function using small interfering RNA-mediated silencing and exogenous expression of dominant-negative proteins diminished transport of PLP to the oligodendro…

MaleProteolipid protein 1Vesicle-Associated Membrane Protein 3MESH: Myelin SheathMESH: R-SNARE Proteins[SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/NeurobiologyR-SNARE ProteinsMiceMyelin0302 clinical medicineMESH: Microscopy ImmunoelectronMESH: Genetic VectorsImage Processing Computer-AssistedMESH: AnimalsMicroscopy ImmunoelectronMESH: Myelin Proteolipid ProteinCells CulturedMyelin SheathMESH: Vesicle-Associated Membrane Protein 3VAMP30303 health sciencesMESH: ExocytosisGeneral NeuroscienceMESH: Enzyme-Linked Immunosorbent AssayArticlesImmunohistochemistryMESH: Image Processing Computer-AssistedMyelin proteolipid proteinCell biologymedicine.anatomical_structureElectrophoresis Polyacrylamide GelFemaleRNA InterferenceMESH: Cells CulturedEndosomeGenetic VectorsMESH: RNA InterferenceBiological Transport ActiveEnzyme-Linked Immunosorbent AssayEndosomesBiologyTransfectionExocytosisExocytosis03 medical and health sciencesMESH: Mice Inbred C57BLmedicineAnimalsSecretionMyelin Proteolipid ProteinMESH: MiceSecretory pathway030304 developmental biologyMESH: TransfectionCell MembraneMESH: ImmunohistochemistryMESH: MaleMice Inbred C57BLnervous systemMESH: EndosomesMESH: Biological Transport ActiveLysosomesMESH: Female030217 neurology & neurosurgeryMESH: LysosomesMESH: Cell MembraneMESH: Electrophoresis Polyacrylamide Gel
researchProduct