0000000000124441

AUTHOR

Hélène Jamann

0000-0002-3610-3090

showing 2 related works from this author

Pro-inflammatory T helper 17 directly harms oligodendrocytes in neuroinflammation.

2021

Significance Multiple sclerosis (MS) is a neuroinflammatory, demyelinating disease that represents one of the most frequent causes of irreversible disability in young adults. Treatment options to halt disability are limited. We discovered that T helper (Th)17 cells in contact with oligodendrocytes produce higher levels of glutamate and induce significantly greater oligodendrocyte damage than their Th2 counterpart. Blockade of CD29, which is linked to glutamate release pathways and expressed in high levels on Th17 cells, preserved human oligodendrocyte processes from Th17-mediated injury. Our data thus provide evidence for the direct and deleterious attack of Th17 cells on the myelin compart…

Programmed cell deathEncephalomyelitis Autoimmune ExperimentalCentral nervous systemFreund's AdjuvantoligodendrocytesMice Transgenicglutamate03 medical and health sciencesMyelinMice0302 clinical medicineImmunology and Inflammationintravital microscopymedicineAnimalsNeuroinflammation030304 developmental biologyInflammationMice Knockout0303 health sciencesMultidisciplinaryChemistryMultiple sclerosisGlutamate receptorMembrane ProteinsCD29Biological SciencesCD29 blockademedicine.disease420Oligodendrocyte3. Good healthCell biologyDNA-Binding ProteinsMice Inbred C57BLOligodendrogliamedicine.anatomical_structurePertussis ToxinTh17 CellsMyelin-Oligodendrocyte Glycoprotein030217 neurology & neurosurgeryProceedings of the National Academy of Sciences of the United States of America
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Increased frequency of proinflammatory CD4 T cells and pathological levels of serum neurofilament light chain in adult drug-resistant epilepsy

2020

OBJECTIVE: Adult drug-resistant epilepsy (DRE) is associated with significant morbidity. Infiltration of immune cells is observed in DRE epileptic foci; however, the relation between DRE and the peripheral immune cell compartment remains only partially understood. We aimed to investigate differences in immune cell populations, cytokines, and neurodegenerative biomarkers in the peripheral blood of subjects with epilepsy versus healthy controls, and in DRE compared to well-controlled epilepsy (WCE). METHODS: Peripheral blood mononuclear cells and serum from >120 age- and sex-matched adults suffering from focal onset epilepsy and controls were analyzed by multipanel flow cytometry, multiplex i…

AdultCD4-Positive T-LymphocytesMale0301 basic medicineDrug Resistant Epilepsymedicine.medical_treatmenturologic and male genital diseasesPeripheral blood mononuclear cellProinflammatory cytokineInterferon-gammaYoung Adult03 medical and health sciencesEpilepsyTh2 Cells0302 clinical medicineImmune systemNeurofilament ProteinsmedicineHumansImmunoassayInflammationEpilepsyTumor Necrosis Factor-alphabusiness.industryInterleukinsInterleukin-17NeurotoxicityGranulocyte-Macrophage Colony-Stimulating FactorInterleukinMiddle AgedFlow Cytometrymedicine.diseaseSingle Molecule ImagingCD4 Lymphocyte CountInterleukin-10030104 developmental biologyCytokineNeurologyCase-Control StudiesImmunologyCytokinesTh17 CellsFemaleTumor necrosis factor alphaInterleukin-4Neurology (clinical)business030217 neurology & neurosurgery
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