2013
Brain mechanisms for prepulse inhibition in adults with Tourette syndrome: Initial findings
Zebardast N, Crowley MJ, Bloch MH, Mayes LC, Vander Wyk BV, Leckman JF, Pelphrey KA, Swain JE. Brain mechanisms for prepulse inhibition in adults with Tourette syndrome: Initial findings. Psychiatry Research 2013, 214: 33-41. PMID: 23916249, PMCID: PMC3932431, DOI: 10.1016/j.pscychresns.2013.05.009.Peer-Reviewed Original ResearchConceptsTourette syndromeFunctional magnetic resonance imagingHealthy subjectsTic severityWhole-brain functional magnetic resonance imagingYale Global Tic Severity ScaleTactile startle responseCase-control study designTic Severity ScaleCortical-striatal circuitsBrain activityMagnetic resonance imagingMultiple brain regionsLeft middle frontal gyrusMiddle frontal gyrusDegree of PPIPulse-alone stimuliBlock-design fMRI paradigmTic symptomsNeuropathological dataHealthy controlsPrepulse inhibitionDevelopmental neuropsychiatric disordersSensorimotor gatingLeft caudate
2011
Risperidone-Related Improvement of Irritability in Children with Autism Is not Associated with Changes in Serum of Epidermal Growth Factor and Interleukin-13
Tobiasova Z, van der Lingen KH, Scahill L, Leckman JF, Zhang Y, Chae W, McCracken JT, McDougle CJ, Vitiello B, Tierney E, Aman MG, Arnold LE, Katsovich L, Hoekstra PJ, Volkmar F, Bothwell AL, Kawikova I. Risperidone-Related Improvement of Irritability in Children with Autism Is not Associated with Changes in Serum of Epidermal Growth Factor and Interleukin-13. Journal Of Child And Adolescent Psychopharmacology 2011, 21: 555-564. PMID: 22070180, PMCID: PMC3279715, DOI: 10.1089/cap.2010.0134.Peer-Reviewed Original ResearchConceptsMedication-free subjectsEpidermal growth factorHealthy controlsInflammatory markersIL-13IL-1 receptor antagonistGrowth factorSerum inflammatory markersChemoattractant protein-1Placebo groupClinical improvementBaseline visitIL-17Serum levelsCytokine concentrationsInflammatory moleculesSerum concentrationsClinical trialsHealthy subjectsIL-1Interleukin-13RisperidoneAltered levelsProtein 1Diagnosis of autismBiofeedback of Real-Time Functional Magnetic Resonance Imaging Data from the Supplementary Motor Area Reduces Functional Connectivity to Subcortical Regions
Hampson M, Scheinost D, Qiu M, Bhawnani J, Lacadie CM, Leckman JF, Constable RT, Papademetris X. Biofeedback of Real-Time Functional Magnetic Resonance Imaging Data from the Supplementary Motor Area Reduces Functional Connectivity to Subcortical Regions. Brain Connectivity 2011, 1: 91-98. PMID: 22432958, PMCID: PMC3621512, DOI: 10.1089/brain.2011.0002.Peer-Reviewed Original ResearchConceptsSupplementary motor areaReal-time functional magnetic resonanceFunctional connectivityTourette syndromeFunctional magnetic resonanceMotor areaSubcortical regionsBiofeedback sessionsState functional connectivityTic symptomsMagnetic resonance imaging dataHealthy subjectsTS patientsMagnetic resonanceBrain areasBiofeedbackFunctional magnetic resonance imaging (fMRI) dataFurther studiesSignificant increaseAberrant dynamicsSubjectsRecent studiesImaging dataSessionsPatients
2010
Altered immunoglobulin profiles in children with Tourette syndrome
Bos-Veneman NG, Olieman R, Tobiasova Z, Hoekstra PJ, Katsovich L, Bothwell AL, Leckman JF, Kawikova I. Altered immunoglobulin profiles in children with Tourette syndrome. Brain Behavior And Immunity 2010, 25: 532-538. PMID: 21156204, PMCID: PMC3056238, DOI: 10.1016/j.bbi.2010.12.003.Peer-Reviewed Original ResearchConceptsTourette syndromeSymptom exacerbationHealthy controlsSymptom severityPost-infectious autoimmunityB cell immunityLevels of IgG2Independent cross-sectional samplesCell immunitySerum levelsAdditional patientsIgG3 levelsIgM levelsImmunoglobulin profileHealthy childrenImmune deficiencyTrend-level significanceHealthy subjectsSerum IgG3PatientsIg profilesCross-sectional sampleIgG3Time pointsIg concentrations
2001
Regional Brain and Ventricular Volumes in Tourette Syndrome
Peterson BS, Staib L, Scahill L, Zhang H, Anderson C, Leckman JF, Cohen DJ, Gore JC, Albert J, Webster R. Regional Brain and Ventricular Volumes in Tourette Syndrome. JAMA Psychiatry 2001, 58: 427-440. PMID: 11343521, DOI: 10.1001/archpsyc.58.5.427.Peer-Reviewed Original ResearchConceptsParieto-occipital regionsTourette syndromeTic symptomsCerebral volumeVentricular volumePathophysiology of TST subjectsWhite matter portionsThalamo-cortical circuitrySignificant inverse associationRegional cerebral volumesHigh-resolution anatomical magnetic resonance imagesStandard anatomical landmarksSex differencesAge-related findingsDorsal prefrontal regionsRegional brainCortico-striatoHealthy childrenHealthy controlsInverse associationHealthy subjectsOccipital volumeTS groupCortical regions