2021
Impaired Myocardial Flow Reserve on 82Rubidium Positron Emission Tomography/Computed Tomography in Patients With Systemic Sclerosis.
Feher A, Boutagy NE, Oikonomou EK, Thorn S, Liu YH, Miller EJ, Sinusas AJ, Hinchcliff M. Impaired Myocardial Flow Reserve on 82Rubidium Positron Emission Tomography/Computed Tomography in Patients With Systemic Sclerosis. The Journal Of Rheumatology 2021, 48: 1574-1582. PMID: 34266986, PMCID: PMC10275580, DOI: 10.3899/jrheum.210040.Peer-Reviewed Original ResearchConceptsReduced Myocardial Flow ReserveMyocardial flow reserveRaynaud's phenomenonPrimary Raynaud's phenomenonSecondary Raynaud's phenomenonPatient controlsHealthy participantsFlow reservePositron Emission Tomography/Computed TomographyEmission Tomography/Computed TomographyTomography/Computed TomographyPositron emission tomography/Impaired Myocardial Flow ReserveCoronary microvascular dysfunctionLarge prospective studiesMultivariable logistic regressionEmission tomography/PET/CTSSc-RPMicrovascular dysfunctionClinical predictorsIndependent predictorsSystemic sclerosisPrognostic valueProspective study
2020
Quantification of myocardial blood flow (MBF) and reserve (MFR) incorporated with a novel segmentation approach: Assessments of quantitative precision and the lower limit of normal MBF and MFR in patients
Liu H, Thorn S, Wu J, Fazzone-Chettiar R, Sandoval V, Miller EJ, Sinusas AJ, Liu YH. Quantification of myocardial blood flow (MBF) and reserve (MFR) incorporated with a novel segmentation approach: Assessments of quantitative precision and the lower limit of normal MBF and MFR in patients. Journal Of Nuclear Cardiology 2020, 28: 1236-1248. PMID: 32715416, DOI: 10.1007/s12350-020-02278-y.Peer-Reviewed Original Research
2019
Application of Hybrid Matrix Metalloproteinase-Targeted and Dynamic 201Tl Single-Photon Emission Computed Tomography/Computed Tomography Imaging for Evaluation of Early Post-Myocardial Infarction Remodeling
Thorn SL, Barlow SC, Feher A, Stacy MR, Doviak H, Jacobs J, Zellars K, Renaud JM, Klein R, deKemp RA, Khakoo AY, Lee T, Spinale FG, Sinusas AJ. Application of Hybrid Matrix Metalloproteinase-Targeted and Dynamic 201Tl Single-Photon Emission Computed Tomography/Computed Tomography Imaging for Evaluation of Early Post-Myocardial Infarction Remodeling. Circulation Cardiovascular Imaging 2019, 12: e009055. PMID: 31707811, PMCID: PMC7250243, DOI: 10.1161/circimaging.119.009055.Peer-Reviewed Original ResearchConceptsMyocardial blood flowSingle photon emissionBlood flowRecombinant TIMP-3Matrix metalloproteinasesR injuryTomography/Intracoronary deliveryMMP activationPost-myocardial infarction remodelingSubsequent left ventricular remodelingHybrid single-photon emissionDual-isotope single-photon emissionTomography/Computed Tomography ImagingLeft ventricular remodelingIschemia/reperfusionPost-MI remodelingPost-myocardial infarctionComputed tomography (CT) imagingIntracoronary infusionVentricular functionSaline groupVentricular remodelingNoninvasive evaluationTreatment groupsAngiotensin Receptor Neprilysin Inhibitor Attenuates Myocardial Remodeling and Improves Infarct Perfusion in Experimental Heart Failure
Pfau D, Thorn SL, Zhang J, Mikush N, Renaud JM, Klein R, deKemp RA, Wu X, Hu X, Sinusas AJ, Young LH, Tirziu D. Angiotensin Receptor Neprilysin Inhibitor Attenuates Myocardial Remodeling and Improves Infarct Perfusion in Experimental Heart Failure. Scientific Reports 2019, 9: 5791. PMID: 30962467, PMCID: PMC6453892, DOI: 10.1038/s41598-019-42113-0.Peer-Reviewed Original ResearchMeSH KeywordsAminobutyratesAngiotensin Receptor AntagonistsAnimalsBiphenyl CompoundsDrug CombinationsHeartHeart FailureMaleMyocardial Reperfusion InjuryMyocardiumNeovascularization, PhysiologicNeprilysinOrganotechnetium CompoundsPeptides, CyclicRatsRats, Inbred LewSingle Photon Emission Computed Tomography Computed TomographyTetrazolesValsartanVascular Endothelial Growth Factor AVentricular RemodelingConceptsSacubitril/valsartanExperimental heart failureHeart failureMyocardial infarctionMyocardial remodelingAngiotensin receptor neprilysin inhibitorAngiotensin receptor blocker valsartanMicroSPECT/CT imagingReceptor blocker valsartanHeart failure patientsProgressive LV dilationGlobal LV functionLV contractile dysfunctionNeprilysin inhibitor sacubitrilBorder zoneLimited remodelingFailure patientsInhibitor therapyMale LewisWeeks treatmentLV dilationLV functionNeprilysin inhibitorContractile dysfunctionInterstitial fibrosisIncisional Negative Pressure Wound Therapy Augments Perfusion and Improves Wound Healing in a Swine Model Pilot Study.
Shah A, Sumpio BJ, Tsay C, Swallow M, Dash B, Thorn SL, Sinusas AJ, Koo A, Hsia HC, Au A. Incisional Negative Pressure Wound Therapy Augments Perfusion and Improves Wound Healing in a Swine Model Pilot Study. Annals Of Plastic Surgery 2019, 82: s222-s227. PMID: 30855392, DOI: 10.1097/sap.0000000000001842.Peer-Reviewed Original ResearchConceptsNegative pressure wound therapyVascular endothelial growth factorClosed woundsUse of NPWTVEGF expressionSurgical wound sitePressure wound therapyMale Yorkshire pigsEnzyme-linked immunosorbent assay resultsEnzyme-linked immunosorbent assayEndothelial growth factorExcisional wound modelImmunosorbent assay resultsControl dressingsPrimary sutureScar evaluationImmunohistochemistry stainingIncision siteNPWT dressingsWound therapyAngiogenesis markersTreatment groupsAppearance of woundsOpen woundsWound healing model
2018
Simplified Quantification and Acquisition Protocol for 123I-MIBG Dynamic SPECT
Wu J, Gallezot JD, Lu Y, Ye Q, Liu H, Esserman DA, Kyriakides TC, Thorn S, Zonouz TH, Liu YH, Lampert R, Sinusas AJ, Carson RE, Liu C. Simplified Quantification and Acquisition Protocol for 123I-MIBG Dynamic SPECT. Journal Of Nuclear Medicine 2018, 59: 1574-1580. PMID: 29476001, DOI: 10.2967/jnumed.117.202143.Peer-Reviewed Original Research
2016
T1-refBlochi: high resolution 3D post-contrast T1 myocardial mapping based on a single 3D late gadolinium enhancement volume, Bloch equations, and a reference T1
Hu C, Sinusas AJ, Huber S, Thorn S, Stacy MR, Mojibian H, Peters DC. T1-refBlochi: high resolution 3D post-contrast T1 myocardial mapping based on a single 3D late gadolinium enhancement volume, Bloch equations, and a reference T1. Journal Of Cardiovascular Magnetic Resonance 2016, 19: 63. PMID: 28821300, PMCID: PMC5563030, DOI: 10.1186/s12968-017-0375-1.Peer-Reviewed Original ResearchAlgorithmsAnimalsCardiomyopathiesComputer SimulationContrast MediaFeasibility StudiesFemaleFibrosisHeart AtriaHumansImage Interpretation, Computer-AssistedImaging, Three-DimensionalMagnetic Resonance ImagingMaleMiddle AgedModels, CardiovascularMonte Carlo MethodOrganometallic CompoundsPhantoms, ImagingPredictive Value of TestsReproducibility of ResultsSus scrofaEffects of an endothelin receptor antagonist, Macitentan, on right ventricular substrate utilization and function in a Sugen 5416/hypoxia rat model of severe pulmonary arterial hypertension
Drozd K, Ahmadi A, Deng Y, Jiang B, Petryk J, Thorn S, Stewart D, Beanlands R, deKemp RA, DaSilva JN, Mielniczuk LM. Effects of an endothelin receptor antagonist, Macitentan, on right ventricular substrate utilization and function in a Sugen 5416/hypoxia rat model of severe pulmonary arterial hypertension. Journal Of Nuclear Cardiology 2016, 24: 1979-1989. PMID: 27688036, DOI: 10.1007/s12350-016-0663-4.Peer-Reviewed Original ResearchConceptsPulmonary arterial hypertensionRV FDG uptakePositron emission tomographyFDG uptakeFTHA uptakeFatty acid metabolismArterial hypertensionRV functionMacitentan treatmentRat modelSevere pulmonary arterial hypertensionWeek 5Effect of macitentanImproved RV functionRV systolic pressureWeeks of hypoxiaEndothelin receptor antagonistsRV ejection fractionHypoxia rat modelSingle subcutaneous injectionMale Sprague-DawleyAcid metabolismMyocardial energy metabolismPAH severitySugen 5416Quantitative Analysis of Dynamic 123I-mIBG SPECT Imaging Data in Healthy Humans with a Population-Based Metabolite Correction Method
Wu J, Lin SF, Gallezot JD, Chan C, Prasad R, Thorn S, Stacy MR, Huang Y, Zonouz TH, Liu YH, Lampert RJ, Carson RE, Sinusas AJ, Liu C. Quantitative Analysis of Dynamic 123I-mIBG SPECT Imaging Data in Healthy Humans with a Population-Based Metabolite Correction Method. Journal Of Nuclear Medicine 2016, 57: 1226-1232. PMID: 27081169, DOI: 10.2967/jnumed.115.171710.Peer-Reviewed Original Research3-IodobenzylguanidineAdultAgedAlgorithmsArtifactsComputer SimulationFemaleHeartHumansImage EnhancementImage Interpretation, Computer-AssistedMaleMiddle AgedModels, CardiovascularModels, StatisticalMyocardiumRadiopharmaceuticalsReproducibility of ResultsSensitivity and SpecificityTissue DistributionTomography, Emission-Computed, Single-Photon
2015
ENPP1-Fc prevents mortality and vascular calcifications in rodent model of generalized arterial calcification of infancy
Albright RA, Stabach P, Cao W, Kavanagh D, Mullen I, Braddock AA, Covo MS, Tehan M, Yang G, Cheng Z, Bouchard K, Yu ZX, Thorn S, Wang X, Folta-Stogniew EJ, Negrete A, Sinusas AJ, Shiloach J, Zubal G, Madri JA, De La Cruz EM, Braddock DT. ENPP1-Fc prevents mortality and vascular calcifications in rodent model of generalized arterial calcification of infancy. Nature Communications 2015, 6: 10006. PMID: 26624227, PMCID: PMC4686714, DOI: 10.1038/ncomms10006.Peer-Reviewed Original ResearchConceptsChronic kidney diseaseVascular calcificationArterial calcificationOrphan diseaseCommon diseaseSequelae of diseaseEctopic vascular calcificationInternal elastic laminaPrevent mortalityRenal failureCardiac failureKidney diseaseSubcutaneous administrationRodent modelsAnimal modelsEctopic calcificationVascular wallLarge arteriesElastic laminaDiseaseCalcificationCalciphylaxisDecreased concentrationSclerosisArteryDeletion of MLIP (Muscle-enriched A-type Lamin-interacting Protein) Leads to Cardiac Hyperactivation of Akt/Mammalian Target of Rapamycin (mTOR) and Impaired Cardiac Adaptation*
Cattin ME, Wang J, Weldrick JJ, Roeske CL, Mak E, Thorn SL, DaSilva JN, Wang Y, Lusis AJ, Burgon PG. Deletion of MLIP (Muscle-enriched A-type Lamin-interacting Protein) Leads to Cardiac Hyperactivation of Akt/Mammalian Target of Rapamycin (mTOR) and Impaired Cardiac Adaptation*. Journal Of Biological Chemistry 2015, 290: 26699-26714. PMID: 26359501, PMCID: PMC4646324, DOI: 10.1074/jbc.m115.678433.Peer-Reviewed Original ResearchMeSH KeywordsAdaptation, PhysiologicalAnimalsCardiomegalyCarrier ProteinsCo-Repressor ProteinsFemaleGene Expression RegulationGenome-Wide Association StudyHeart Function TestsHemodynamicsIsoproterenolMaleMiceMice, Inbred C57BLMice, KnockoutMyocardiumMyocytes, CardiacNuclear ProteinsPhosphorylationProto-Oncogene Proteins c-aktSignal TransductionStress, PhysiologicalTOR Serine-Threonine KinasesUltrasonographyConceptsAKT/mTOR pathwayGenome-wide association studiesAkt/mammalian targetMTOR pathwayAkt/mTOR activityAkt/mTORUnique proteinsUnknown functionAssociation studiesMTOR activityMammalian targetCardiac adaptationRegenerative abilityGenetic associationAdult heartPathwayHomeostasisMyocardial metabolic abnormalitiesNormal cardiac functionAdaptationEarly responseMetabolic abnormalitiesCardiac functionMLIPCardiac stressCardiac β-Adrenoceptor Expression Is Reduced in Zucker Diabetic Fatty Rats as Type-2 Diabetes Progresses
Haley JM, Thackeray JT, Thorn SL, DaSilva JN. Cardiac β-Adrenoceptor Expression Is Reduced in Zucker Diabetic Fatty Rats as Type-2 Diabetes Progresses. PLOS ONE 2015, 10: e0127581. PMID: 25996498, PMCID: PMC4440709, DOI: 10.1371/journal.pone.0127581.Peer-Reviewed Original ResearchConceptsZucker diabetic fattyΒ-AR expressionWeeks of ageΒ2-AR expressionΒ-adrenoceptor expressionZDF ratsΒ3-ARFree fatty acidsType 2 diabetic Zucker diabetic fattyType 2 diabetic ZDF ratsDiabetic Zucker diabetic fattyZucker diabetic fatty ratsType 2 diabetes progressesType 2 diabetes modelWestern blottingCardiac β-ARΒ1-AR expressionDiabetic fatty ratsDiabetic ZDF ratsType 2 diabetesModel of hyperglycemiaΒ-AR subtypesBrown adipose tissueDiastolic functionSystolic functionCreation of clinically relevant model of chronic heart failure: Application of multi-modality imaging to define physiology
Thorn S, Sinusas AJ. Creation of clinically relevant model of chronic heart failure: Application of multi-modality imaging to define physiology. Journal Of Nuclear Cardiology 2015, 22: 673-676. PMID: 25698482, DOI: 10.1007/s12350-015-0081-z.Peer-Reviewed Original Research
2014
Glutaredoxin-2 Is Required to Control Oxidative Phosphorylation in Cardiac Muscle by Mediating Deglutathionylation Reactions*
Mailloux RJ, Xuan JY, McBride S, Maharsy W, Thorn S, Holterman CE, Kennedy CR, Rippstein P, deKemp R, da Silva J, Nemer M, Lou M, Harper ME. Glutaredoxin-2 Is Required to Control Oxidative Phosphorylation in Cardiac Muscle by Mediating Deglutathionylation Reactions*. Journal Of Biological Chemistry 2014, 289: 14812-14828. PMID: 24727547, PMCID: PMC4031535, DOI: 10.1074/jbc.m114.550574.Peer-Reviewed Original ResearchReply: Noninvasive Measurement of Mouse Myocardial Glucose Uptake with 18F-FDG
Thorn SL, deKemp R, Dumouchel T, Klein R, Renaud JN, Wells RG, Gollob M, Beanlands RS, DaSilva JN. Reply: Noninvasive Measurement of Mouse Myocardial Glucose Uptake with 18F-FDG. Journal Of Nuclear Medicine 2014, 55: 866-867. PMID: 24652829, DOI: 10.2967/jnumed.114.138214.Peer-Reviewed Original Research
2013
Repeatable Noninvasive Measurement of Mouse Myocardial Glucose Uptake with 18F-FDG: Evaluation of Tracer Kinetics in a Type 1 Diabetes Model
Thorn SL, deKemp RA, Dumouchel T, Klein R, Renaud JM, Wells RG, Gollob MH, Beanlands RS, DaSilva JN. Repeatable Noninvasive Measurement of Mouse Myocardial Glucose Uptake with 18F-FDG: Evaluation of Tracer Kinetics in a Type 1 Diabetes Model. Journal Of Nuclear Medicine 2013, 54: 1637-1644. PMID: 23940301, DOI: 10.2967/jnumed.112.110114.Peer-Reviewed Original ResearchConceptsMyocardial glucose uptakeImage-derived blood input functionAcute insulin treatmentInsulin treatmentBlood activityType 1 diabetic miceType 1 diabetic mouse modelML/min/Glucose uptakeVena cava diameterMyocardial glucose uptake ratesDiabetic mouse modelType 1 diabetesStandardized uptake valueTest-retest repeatabilityAcute insulin stimulationDiabetic miceCoefficient of repeatabilityFDG-PETBland-Altman analysisMyocardial glucoseContrast CTBaseline scanMouse modelTime-activity curves
2012
Uniformity and repeatability of normal resting myocardial blood flow in rats using [13N]-ammonia and small animal PET
Lamoureux M, Thorn S, Dumouchel T, Renaud JM, Klein R, Mason S, Lortie M, DaSilva JN, Beanlands RS, deKemp RA. Uniformity and repeatability of normal resting myocardial blood flow in rats using [13N]-ammonia and small animal PET. Nuclear Medicine Communications 2012, 33: 917-925. PMID: 22692581, DOI: 10.1097/mnm.0b013e328355d8bc.Peer-Reviewed Original Research
2011
Reduced CGP12177 binding to cardiac β-adrenoceptors in hyperglycemic high-fat-diet-fed, streptozotocin-induced diabetic rats
Thackeray JT, Parsa-Nezhad M, Kenk M, Thorn SL, Kolajova M, Beanlands RS, DaSilva JN. Reduced CGP12177 binding to cardiac β-adrenoceptors in hyperglycemic high-fat-diet-fed, streptozotocin-induced diabetic rats. Nuclear Medicine And Biology 2011, 38: 1059-1066. PMID: 21831645, DOI: 10.1016/j.nucmedbio.2011.04.002.Peer-Reviewed Original ResearchMeSH KeywordsAdrenergic beta-AntagonistsAnimalsBiomarkersBlotting, WesternDiabetes Mellitus, ExperimentalDiet, High-FatGene Expression RegulationHyperglycemiaMaleMyocardiumPositron-Emission TomographyPropanolaminesProtein BindingRatsRats, Sprague-DawleyReceptors, Adrenergic, beta-1Receptors, Adrenergic, beta-2Substrate SpecificityConceptsAbnormal sympathetic nervous systemΒ-AR expressionSympathetic nervous systemDiabetic rat heartsSingle intraperitoneal injectionVehicle-treated controlsInfusion of isoproterenolCardiac β-adrenoceptorsΒ-AR subtypesΒ-AR antagonistsSpecific bindingHalf of ratsNormal Sprague-DawleyΒ-AR stimulationPositron emission tomographyΒ-adrenoceptor signalingCardiac bindingAR expressionCardiac dysfunctionDiabetic ratsInsulin resistanceSustained hyperglycemiaIntraperitoneal injectionΒ-adrenoceptorsDiet feeding
2010
Intra- and inter-operator repeatability of myocardial blood flow and myocardial flow reserve measurements using rubidium-82 pet and a highly automated analysis program
Klein R, Renaud JM, Ziadi MC, Thorn SL, Adler A, Beanlands RS, deKemp RA. Intra- and inter-operator repeatability of myocardial blood flow and myocardial flow reserve measurements using rubidium-82 pet and a highly automated analysis program. Journal Of Nuclear Cardiology 2010, 17: 600-616. PMID: 20387135, DOI: 10.1007/s12350-010-9225-3.Peer-Reviewed Original Research
2009
In Vivo Assessment of Myocardial Glucose Uptake by Positron Emission Tomography in Adults With the PRKAG2 Cardiac Syndrome
Ha AC, Renaud JM, deKemp RA, Thorn S, DaSilva J, Garrard L, Yoshinaga K, Abraham A, Green MS, Beanlands RS, Gollob MH. In Vivo Assessment of Myocardial Glucose Uptake by Positron Emission Tomography in Adults With the PRKAG2 Cardiac Syndrome. Circulation Cardiovascular Imaging 2009, 2: 485-491. PMID: 19920047, DOI: 10.1161/circimaging.109.853291.Peer-Reviewed Original ResearchMeSH KeywordsAdultAMP-Activated Protein KinasesCase-Control StudiesEchocardiographyFemaleFluorodeoxyglucose F18Heart DiseasesHumansMaleMetabolic DiseasesMiddle AgedMutationMyocardiumPhenotypeRadiographic Image Interpretation, Computer-AssistedRubidium RadioisotopesStatistics, NonparametricSyndromeTomography, Emission-ComputedConceptsMyocardial glucose uptakeSignificant myocardial scarFDG-PET imagingPRKAG2 cardiac syndromeCardiac syndromeGlucose uptakeAdult patientsMyocardial scarMetabolic diseasesControl groupMedian blood glucoseEuglycemic hyperinsulinemic clampStable blood glucose levelsBlood glucose levelsInherited metabolic diseaseMin/Positron emission tomography (PET) imagingEmission Tomography ImagingPositron emission tomographyMyocardial glucose transportPerfusion scanBlood glucoseControl subjectsHyperinsulinemic clampAffected patients