Featured Publications
Regional Blood Flow in the Normal and Ischemic Brain Is Controlled by Arteriolar Smooth Muscle Cell Contractility and Not by Capillary Pericytes
Hill RA, Tong L, Yuan P, Murikinati S, Gupta S, Grutzendler J. Regional Blood Flow in the Normal and Ischemic Brain Is Controlled by Arteriolar Smooth Muscle Cell Contractility and Not by Capillary Pericytes. Neuron 2015, 87: 95-110. PMID: 26119027, PMCID: PMC4487786, DOI: 10.1016/j.neuron.2015.06.001.Peer-Reviewed Original ResearchConceptsSmooth muscle cellsCerebral blood flowBlood flowCapillary pericytesArteriolar smooth muscle cellsBlood flow regulationRegional blood flowNormal brain functionSmooth muscle actinSmooth muscle cell contractilityMuscle cell contractilityPericyte constrictionIschemic brainBrain ischemiaMicrovascular occlusionNeurovascular couplingMicrovascular diametersWhisker stimulationMuscle actinMuscle cellsBrain functionMajor causePathological conditionsPericytesVascular tree
2013
Perturbed neural activity disrupts cerebral angiogenesis during a postnatal critical period
Whiteus C, Freitas C, Grutzendler J. Perturbed neural activity disrupts cerebral angiogenesis during a postnatal critical period. Nature 2013, 505: 407-411. PMID: 24305053, PMCID: PMC3947100, DOI: 10.1038/nature12821.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, NewbornBlood VesselsCapillariesCell ProliferationCerebral CortexCerebrovascular CirculationDendritic SpinesEndothelial CellsFemaleHypoxia, BrainInterneuronsMaleMiceMicrocirculationNeovascularization, PathologicNeovascularization, PhysiologicNeurogliaNeuronsNG-Nitroarginine Methyl EsterNitric OxideNitric Oxide SynthaseOxygenSignal TransductionTime FactorsVibrissae
2012
In Vivo Imaging of Cerebral Microvascular Plasticity from Birth to Death
Harb R, Whiteus C, Freitas C, Grutzendler J. In Vivo Imaging of Cerebral Microvascular Plasticity from Birth to Death. Cerebrovascular And Brain Metabolism Reviews 2012, 33: 146-156. PMID: 23093067, PMCID: PMC3597363, DOI: 10.1038/jcbfm.2012.152.Peer-Reviewed Original ResearchConceptsVascular stabilityYoung adult miceFirst postnatal monthDegenerative neurological disordersVessel formationHypoxia-induced angiogenesisCerebral functionPostnatal monthAdult brainAdult miceIntact brainMicrovascular plasticityNeurological disordersFirst monthMicrovessel formationOlder adultsMetabolic challengesTwo-photon microscopyNew vesselsBaseline turnoverLong-term adaptive responsesIndividual microvesselsMiceVivo patternBrain
2010
Thinned-skull cranial window technique for long-term imaging of the cortex in live mice
Yang G, Pan F, Parkhurst CN, Grutzendler J, Gan WB. Thinned-skull cranial window technique for long-term imaging of the cortex in live mice. Nature Protocols 2010, 5: 201-208. PMID: 20134419, PMCID: PMC4690457, DOI: 10.1038/nprot.2009.222.Peer-Reviewed Original ResearchConceptsTwo-photon laser scanning microscopyHigh optical resolutionThinned-skull cranial windowImportant experimental toolOptical resolutionLiving brainCranial window techniqueLive miceLong-term imagingCranial windowExperimental toolInvasive approachAvoids exposureFunctional changesCortical structuresLongitudinal imagingPathological conditionsCortexBrainLaser scanning microscopyScanning microscopyMiceImagingMicroscopyResolution
2004
Fibrillar amyloid deposition leads to local synaptic abnormalities and breakage of neuronal branches
Tsai J, Grutzendler J, Duff K, Gan WB. Fibrillar amyloid deposition leads to local synaptic abnormalities and breakage of neuronal branches. Nature Neuroscience 2004, 7: 1181-1183. PMID: 15475950, DOI: 10.1038/nn1335.Peer-Reviewed Original ResearchConceptsFibrillar amyloid depositionAmyloid depositionAlzheimer's diseaseTransgenic mouse modelImportance of preventionFibrillar amyloid depositsSpine lossNearby axonsNeuronal labelingEarly clearanceLarge varicositiesAmyloid plaquesMouse modelNeuronal circuitryAmyloid depositsTwo-photon imagingNeuronal connectionsSynaptic abnormalitiesNeuronal branchesPermanent disruptionPlaquesDiseaseAtrophyVaricositiesPathogenesis
2001
Two modes of radial migration in early development of the cerebral cortex
Nadarajah B, Brunstrom J, Grutzendler J, Wong R, Pearlman A. Two modes of radial migration in early development of the cerebral cortex. Nature Neuroscience 2001, 4: 143-150. PMID: 11175874, DOI: 10.1038/83967.Peer-Reviewed Original ResearchConceptsCerebral cortexAcute cortical slicesCertain genetic mutationsFinal laminar positionSite of originMovement of neuronsCortical slicesCortical neuronsRadial migrationCortical developmentLaminar positionSomal translocationGenetic mutationsCell-type specificDifferential effectsEarly ageCortexNeuronsMarginal zoneLeading processCellsTranslocationEarly developmentTime-lapse imaging