2021
Astroglial Glutamine Synthetase and the Pathogenesis of Mesial Temporal Lobe Epilepsy
Sandhu MRS, Gruenbaum BF, Gruenbaum SE, Dhaher R, Deshpande K, Funaro MC, Lee TW, Zaveri HP, Eid T. Astroglial Glutamine Synthetase and the Pathogenesis of Mesial Temporal Lobe Epilepsy. Frontiers In Neurology 2021, 12: 665334. PMID: 33927688, PMCID: PMC8078591, DOI: 10.3389/fneur.2021.665334.Peer-Reviewed Original ResearchMesial temporal lobe epilepsyAstroglial glutamine synthetaseTemporal lobe epilepsyLobe epilepsyIntractable mesial temporal lobe epilepsyAstrocytic glutamine synthetaseDepressive-like featuresPathogenesis of epilepsyType of epilepsyDiscrete brain regionsNeocortical epilepsyHippocampal neuronsEpilepsyBrain regionsGlutamate-ammonia ligaseLaboratory animalsPathogenesisPossible roleExperimental inhibitionGlutamine synthetaseEnzyme glutamine synthetaseDysfunctionSeizuresAstrocytesSyndrome
2019
Slowing less than 1 Hz is decreased near the seizure onset zone
Lundstrom BN, Boly M, Duckrow R, Zaveri HP, Blumenfeld H. Slowing less than 1 Hz is decreased near the seizure onset zone. Scientific Reports 2019, 9: 6218. PMID: 30996228, PMCID: PMC6470162, DOI: 10.1038/s41598-019-42347-y.Peer-Reviewed Original ResearchConceptsSeizure onset zoneOnset zoneFocal slowingFocal cerebral dysfunctionLocation of dysfunctionFocal epilepsy patientsSlow wave activitySlow oscillationsLocal synaptic strengthsSlow oscillation activityCerebral dysfunctionReduced inhibitory activityPostictal statePostictal slowingEpilepsy patientsModulatory effectsSynaptic strengthDelta frequencyCortical mechanismsIntracranial recordingsDistinct neural mechanismsIntracranial electroencephalographyNeural mechanismsDysfunctionSleep
2018
Astrocytes and Glutamine Synthetase in Epileptogenesis
Eid T, Lee T, Patrylo P, Zaveri HP. Astrocytes and Glutamine Synthetase in Epileptogenesis. Journal Of Neuroscience Research 2018, 97: 1345-1362. PMID: 30022509, PMCID: PMC6338538, DOI: 10.1002/jnr.24267.Peer-Reviewed Original ResearchConceptsMesial temporal lobe epilepsyTemporal lobe epilepsyLobe epilepsyAstrocytic glutamine synthetaseRole of astrocytesPotassium channel Kir4.1Important causative factorExcitatory amino acid transporters EAAT1Antiepileptogenic interventionsEpileptogenic insultAntiepileptogenic therapiesEpilepsy developmentChannel Kir4.1Aquaporin-4EpilepsyCausative factorsTransporters EAAT1New targetsSuch interventionsTransporters MCT1DysfunctionAstrocytesMetabolic mechanismsGlutamine synthetaseDownstream effects
2008
Neurometabolism in human epilepsy
Pan JW, Williamson A, Cavus I, Hetherington HP, Zaveri H, Petroff OA, Spencer DD. Neurometabolism in human epilepsy. Epilepsia 2008, 49: 31-41. PMID: 18304254, PMCID: PMC3657747, DOI: 10.1111/j.1528-1167.2008.01508.x.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBrain DiseasesBrain MappingCarbon IsotopesDominance, CerebralElectrodes, ImplantedElectroencephalographyEpilepsyGamma-Aminobutyric AcidGlucoseHippocampusHumansLimbic SystemMagnetic Resonance SpectroscopyMetabolic DiseasesMicrodialysisMitochondrial DiseasesNeural PathwaysNeuronsPositron-Emission TomographyRatsSynaptic TransmissionConceptsNeurometabolic dysfunctionMagnetic resonance spectroscopic imagingHuman epilepsyEpileptic brainHippocampal resectionSclerotic hippocampusPathophysiologic aspectsEpileptogenic processMicrodialysis measuresExtracellular glutamateEpileptic dysfunctionEnergetic dysfunctionHuman studiesDysfunctionNeurotransmitter cyclingNoninvasive functional imagingProfound decreaseMitochondrial injuryBrain functionEpilepsyFunctional imagingMetabolic imagingBrainIntracranial EEGNeurometabolism