2013
NHE Isoform Switching and KChIP2 Upregulation in Aging Porcine Atria
Kant R, Hu Z, Malhotra JK, Krogh-Madsen T, Christini DJ, Heerdt PM, Abbott GW. NHE Isoform Switching and KChIP2 Upregulation in Aging Porcine Atria. PLOS ONE 2013, 8: e82951. PMID: 24376615, PMCID: PMC3871617, DOI: 10.1371/journal.pone.0082951.Peer-Reviewed Original ResearchConceptsAtrial fibrillationMyocyte action potential durationHuman cardiac physiologyCessation of stimulationAction potential durationLarge animal modelSodium-hydrogen exchangerReperfusion arrhythmiasNHE1-specific inhibitorMyocardial responsivenessPharmacological responsivenessPharmacologic efficacyYoung adult pigsAtrial tissuePotential durationTherapeutic targetAnimal modelsCardiac pathologyKChIP2 expressionReal-time qPCRPotential molecular basisTherapeutic agentsCardiac physiologyFemale swineYoung adults
2012
Transcriptomic analysis reveals atrial KCNE1 down‐regulation following lung lobectomy
Heerdt PM, Kant R, Hu Z, Kanda VA, Christini DJ, Malhotra JK, Abbott GW. Transcriptomic analysis reveals atrial KCNE1 down‐regulation following lung lobectomy. Journal Of Molecular And Cellular Cardiology 2012, 53: 350-353. PMID: 22641150, PMCID: PMC3418454, DOI: 10.1016/j.yjmcc.2012.05.010.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAtrial FibrillationDown-RegulationGene Expression ProfilingGene Expression RegulationHeart AtriaPneumonectomyPotassium Channels, Voltage-GatedSwineTranscriptomeConceptsEffective refractory periodLone atrial fibrillationAtrial fibrillationPostoperative AFLung lobectomyLeft atriumNew-onset postoperative atrial fibrillationMean pulmonary artery pressurePostoperative atrial fibrillationPulmonary vascular resistanceUpper lung lobectomyPulmonary artery pressureTelemetric ECGArtery pressureVascular resistanceMajor surgeryHemodynamic variablesFunction polymorphismLA tissuesRefractory periodWestern blottingProtein levelsGene sequence variantsMolecular changesLobectomy
2000
Chronic Unloading by Left Ventricular Assist Device Reverses Contractile Dysfunction and Alters Gene Expression in End-Stage Heart Failure
Heerdt P, Holmes J, Cai B, Barbone A, Madigan J, Reiken S, Lee D, Oz M, Marks A, Burkhoff D. Chronic Unloading by Left Ventricular Assist Device Reverses Contractile Dysfunction and Alters Gene Expression in End-Stage Heart Failure. Circulation 2000, 102: 2713-2719. PMID: 11094037, DOI: 10.1161/01.cir.102.22.2713.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedBlotting, NorthernBlotting, WesternCalcium-Transporting ATPasesFemaleGene Expression RegulationHeart FailureHeart VentriclesHeart-Assist DevicesHumansMaleMiddle AgedMyocardial ContractionRNA, MessengerRyanodine Receptor Calcium Release ChannelSarcolemmaSodium-Hydrogen ExchangersConceptsEnd-stage heart failureLVAD supportHeart failureContractile strengthLVAD implantationSarcoplasmic reticular membranesNegative FFRIntact myocardiumVentricular assist deviceBlot analysisExpression of genesWestern blot analysisContractile dysfunctionSERCA2a proteinLV trabeculaeSubtype 2aChronic unloadingLV tissueAssist deviceContractile forcePatientsAlters gene expressionHigher mRNAReticular membranesRyanodine receptor