2022
The relationship between cannabis use and taurine: A MRS and metabolomics study
Newman S, Martin A, Raymond D, Cheng H, Wilson L, Barnes S, O’Donnell B. The relationship between cannabis use and taurine: A MRS and metabolomics study. PLOS ONE 2022, 17: e0269280. PMID: 35653401, PMCID: PMC9162360, DOI: 10.1371/journal.pone.0269280.Peer-Reviewed Original ResearchConceptsTaurine levelsCB useBody compositionLow-BMI individualsDorsal anterior cingulateMagnetic resonance spectroscopyNon-user groupNeuroprotective effectsBMI individualsNeurotoxic effectsMRS studiesUrine analysisAnterior cingulateCannabis useSimilar findingsUrine samplesTaurineEssential amino acidsMetabolomic analysisMetabolomics studiesGlutamateCurrent studyGroupBMILevels
2019
An investigation of the relationship between glutamate and resting state connectivity in chronic cannabis users
Newman SD, Cheng H, Kim DJ, Schnakenberg-Martin A, Dydak U, Dharmadhikari S, Hetrick W, O’Donnell B. An investigation of the relationship between glutamate and resting state connectivity in chronic cannabis users. Brain Imaging And Behavior 2019, 14: 2062-2071. PMID: 31302844, PMCID: PMC6955389, DOI: 10.1007/s11682-019-00165-w.Peer-Reviewed Original ResearchConceptsNucleus accumbensGlu levelsState connectivityMultimodal MRI studyState functional connectivityRight nucleus accumbensCB useChronic cannabis usersNAc connectivityHealthy controlsGlutamatergic signalingMRI studiesAnimal studiesCurrent preliminary studyLarger sample sizeMagnetic resonance spectroscopyFunctional connectivityHeavy cannabisCannabis usersCannabisReward networkCB usersLinear regression modelsRSFCEffect size
2018
Aberrant structural–functional coupling in adult cannabis users
Kim D, Martin A, Shin Y, Jo HJ, Cheng H, Newman SD, Sporns O, Hetrick WP, Calkins E, O'Donnell BF. Aberrant structural–functional coupling in adult cannabis users. Human Brain Mapping 2018, 40: 252-261. PMID: 30203892, PMCID: PMC6289814, DOI: 10.1002/hbm.24369.Peer-Reviewed Original ResearchConceptsStructural-functional couplingSC-FC couplingResting-state functional imagingCB usersPrimary outcome measureCannabis usersCB1 receptor densityRegion-specific disruptionCB useChronic cannabis useFunctional brain connectivityRich-club organizationOutcome measuresReceptor densitySynaptic plasticityRich-club analysisCannabis useFunctional connectivityBrain connectivityFunctional imagingAdult cannabis usersFunctional couplingBrain networksPositive associationHippocampus