Search results for "Neurofibromatosis type 2"

showing 3 items of 3 documents

Neurofibromatosis type 2 tumor suppressor protein is expressed in oligodendrocytes and regulates cell proliferation and process formation.

2017

The neurofibromatosis type 2 (NF2) tumor suppressor protein Merlin functions as a negative regulator of cell growth and actin dynamics in different cell types amongst which Schwann cells have been extensively studied. In contrast, the presence and the role of Merlin in oligodendrocytes, the myelin forming cells within the CNS, have not been elucidated. In this work, we demonstrate that Merlin immunoreactivity was broadly distributed in the white matter throughout the central nervous system. Following Merlin expression during development in the cerebellum, Merlin could be detected in the cerebellar white matter tract at early postnatal stages as shown by its co-localization with Olig2-positi…

0301 basic medicineCentral Nervous SystemCytoplasmlcsh:MedicineNervous SystemMyelinMiceCell MovementAnimal CellsCerebellumMedicine and Health SciencesNeurofibromatosis type 2lcsh:ScienceNeuronsStainingCerebral CortexNeurofibromin 2MultidisciplinarybiologyCell StainingBrainCell migrationCell biologyOligodendrogliamedicine.anatomical_structureGenetic DiseasesCell ProcessesAnatomyCellular TypesCellular Structures and OrganellesResearch ArticleCell typeNeurofibromatosis 2NeurogenesisNerve Tissue ProteinsTransfectionResearch and Analysis MethodsCell Line03 medical and health sciencesmedicineAnimalsImmunohistochemistry TechniquesCell ProliferationCell NucleusClinical GeneticsCell growthAutosomal Dominant Diseaseslcsh:RBiology and Life SciencesCell Biologymedicine.diseaseOligodendrocyteMyelin basic proteinMerlin (protein)Mice Inbred C57BLHistochemistry and Cytochemistry Techniques030104 developmental biologySpecimen Preparation and TreatmentAstrocytesNeurofibromatosis Type 2Cellular Neurosciencebiology.proteinImmunologic Techniqueslcsh:QSchwann CellsNeurosciencePLoS ONE
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Lack of neurofibromatosis type 2 gene promoter methylation in sporadic vestibular schwannomas.

2011

<i>Background:</i> Vestibular schwannomas (VS) are benign tumors of the nervous system that are usually sporadic but also occur in the inherited disorder neurofibromatosis type 2 (NF2). In VS, losses of chromosomal material and mutations of the NF2 gene have been established to be causative. For a subset of VS without detectable gene alterations, promoter inactivation by hypermethylation has been suggested. However, published data are very limited and contradictory. <i>Methods:</i> We analyzed NF2 gene promoter methylation in 35 sporadic VS by methylation-specific PCR. <i>Results:</i> Twenty-three of the tumors were informative, showing no promoter methyl…

AdultMaleBiologymedicine.disease_causePolymerase Chain Reactionchemistry.chemical_compoundYoung Adultotorhinolaryngologic diseasesmedicineHumansNeurofibromatosis type 2NeurofibromatosisGeneAgedRetrospective StudiesMutationNeurofibromin 2PromoterMethylationDNA NeoplasmNeuroma AcousticDNA MethylationMiddle Agedmedicine.diseaseOtorhinolaryngologychemistryDNA methylationMutationCancer researchDisease ProgressionFemaleDNAFollow-Up StudiesORL; journal for oto-rhino-laryngology and its related specialties
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The VEGF/VEGF-R Axis in Sporadic Vestibular Schwannomas Correlates with Irradiation and Disease Recurrence

2012

<b><i>Background/Aims:</i></b> The molecular mechanisms downstream of mutated neurofibromatosis type 2 (NF2) gene resulting in the growth and development of vestibular schwannoma (VS) are controversial. Several lines of evidence suggest the involvement of the vascular endothelial growth factor (VEGF) pathway in VS development. Given that recent studies of VEGF blockade in patients with NF2-associated VS showed positive effects on VS growth control, we initiated this comprehensive study of the VEGF pathway in sporadic VS. <b><i>Methods:</i></b> A tissue microarray analysis of 182 sporadic VS was conducted. The expression of VEGF and its recepto…

AdultMaleVascular Endothelial Growth Factor APathologymedicine.medical_specialtyAdolescentYoung Adultchemistry.chemical_compoundNeuropilin 1medicineHumansNeurofibromatosis type 2ReceptorAgedCell ProliferationCell growthbusiness.industryNeuroma AcousticMiddle Agedmedicine.diseaseNeuromaImmunohistochemistryVascular Endothelial Growth Factor Receptor-2Neuropilin-1BlockadeVascular endothelial growth factorReceptors Vascular Endothelial Growth FactorOtorhinolaryngologychemistryTissue Array AnalysisImmunohistochemistryFemaleNeoplasm Recurrence LocalbusinessORL
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