2014
Dipeptidyl‐Peptidase 4 Inhibition and the Vascular Effects of Glucagon‐like Peptide‐1 and Brain Natriuretic Peptide in the Human Forearm
Devin JK, Pretorius M, Nian H, Yu C, Billings FT, Brown NJ. Dipeptidyl‐Peptidase 4 Inhibition and the Vascular Effects of Glucagon‐like Peptide‐1 and Brain Natriuretic Peptide in the Human Forearm. Journal Of The American Heart Association 2014, 3: e001075. PMID: 25158865, PMCID: PMC4310400, DOI: 10.1161/jaha.114.001075.Peer-Reviewed Original ResearchConceptsGlucagon-like peptide-1Brain natriuretic peptideForearm blood flowNatriuretic peptideDPP4 inhibitionBlood flowPeptide-1Placebo-controlled crossover studyDipeptidyl peptidase-4 inhibitorsDipeptidyl peptidase-4 inhibitionForearm vascular resistanceDose-dependent vasodilationMean arterial pressureGLP-1 concentrationsHuman forearmSitagliptin useDirect vasodilatorVascular resistanceVasodilator responseVascular effectsArterial pressureBrachial arteryDiabetes mellitusGlycemic controlNorepinephrine releaseSubstance P Increases Sympathetic Activity During Combined Angiotensin-Converting Enzyme and Dipeptidyl Peptidase-4 Inhibition
Devin JK, Pretorius M, Nian H, Yu C, Billings FT, Brown NJ. Substance P Increases Sympathetic Activity During Combined Angiotensin-Converting Enzyme and Dipeptidyl Peptidase-4 Inhibition. Hypertension 2014, 63: 951-957. PMID: 24516103, PMCID: PMC3984385, DOI: 10.1161/hypertensionaha.113.02767.Peer-Reviewed Original ResearchMeSH KeywordsAdultAngiotensin-Converting Enzyme InhibitorsBlood PressureBradykininCross-Over StudiesDipeptidyl Peptidase 4Double-Blind MethodEnalaprilatEnzyme InhibitorsFemaleHeart RateHumansMaleMiddle AgedNeurotransmitter AgentsNorepinephrinePeptidyl-Dipeptidase APyrazinesSitagliptin PhosphateSubstance PSympathetic Nervous SystemTriazolesVascular ResistanceConceptsDipeptidyl peptidase-4 inhibitionPeptidase-4 inhibitionTissue plasminogen activator releaseSubstance PDipeptidyl peptidase-4Plasminogen activator releaseSympathetic activityPeptidase-4Activator releasePlacebo-controlled crossover studyDipeptidyl peptidase-4 inhibitorsType 2 diabetes mellitusIntra-arterial enalaprilatForearm vascular resistanceForearm blood flowMean arterial pressurePeptidase-4 inhibitorsAngiotensin converting enzymeSubstrates of angiotensinVascular resistanceVasodilator responseArterial pressureBrachial arteryDiabetes mellitusCrossover study
2012
Polymorphisms in the transcription factor NRF2 and forearm vasodilator responses in humans
Marczak ED, Marzec J, Zeldin DC, Kleeberger SR, Brown NJ, Pretorius M, Lee CR. Polymorphisms in the transcription factor NRF2 and forearm vasodilator responses in humans. Pharmacogenetics And Genomics 2012, 22: 620-628. PMID: 22668754, PMCID: PMC3599320, DOI: 10.1097/fpc.0b013e32835516e5.Peer-Reviewed Original ResearchConceptsForearm vascular resistanceForearm blood flowVariant allele carriersVasodilator responseSodium nitroprussideVascular functionAllele carriersStrain-gauge venous occlusion plethysmographyLower forearm blood flowEndothelial-independent mannerForearm vasodilator responseVenous occlusion plethysmographyWild-type individualsTranscription factor Nrf2Endothelial dysfunctionOcclusion plethysmographyVascular resistanceIncremental dosesCardiovascular diseaseBlood flowG genotypeA polymorphismSignificant associationBasal conditionsFactor Nrf2
2010
Genetic Variation in Soluble Epoxide Hydrolase (EPHX2) Is Associated With Forearm Vasodilator Responses in Humans
Lee CR, Pretorius M, Schuck RN, Burch LH, Bartlett J, Williams SM, Zeldin DC, Brown NJ. Genetic Variation in Soluble Epoxide Hydrolase (EPHX2) Is Associated With Forearm Vasodilator Responses in Humans. Hypertension 2010, 57: 116-122. PMID: 21098312, PMCID: PMC3020911, DOI: 10.1161/hypertensionaha.110.161695.Peer-Reviewed Original ResearchConceptsForearm blood flowVariant allele carriersForearm vasodilator responseForearm vascular resistanceSoluble epoxide hydrolaseVascular resistanceVasodilator responseBlood flowAllele carriersSodium nitroprussideVascular functionStrain-gauge venous occlusion plethysmographyHighest forearm blood flowLower forearm vascular resistanceSignificant associationCytochrome P450-derived epoxyeicosatrienoic acidsEpoxide hydrolaseVenous occlusion plethysmographyCardiovascular disease riskEndothelium-independent mannerWild-type individualsOcclusion plethysmographyPotent vasodilatorEpoxyeicosatrienoic acidsPreclinical models
2004
Relationship Between Carbamoyl-Phosphate Synthetase Genotype and Systemic Vascular Function
Summar ML, Gainer JV, Pretorius M, Malave H, Harris S, Hall LD, Weisberg A, Vaughan DE, Christman BW, Brown NJ. Relationship Between Carbamoyl-Phosphate Synthetase Genotype and Systemic Vascular Function. Hypertension 2004, 43: 186-191. PMID: 14718356, DOI: 10.1161/01.hyp.0000112424.06921.52.Peer-Reviewed Original ResearchConceptsForearm blood flowNitric oxide metabolite concentrationsNitric oxide metabolitesBlood flowOxide metabolitesNitric oxide-mediated vasodilationVascular smooth muscle reactivityAllele homozygotesTissue-type plasminogen activator antigenSystemic vascular functionSmooth muscle reactivityPlasminogen activator antigenC allele homozygotesNitric oxide productionMetabolite concentrationsVasodilator responseBrachial arteryMuscle reactivityVascular functionHealthy subjectsBlood samplesSodium nitroprussideC alleleOxide productionCarbamoyl phosphate synthetase 1
2002
Ethnicity Affects Vasodilation, but Not Endothelial Tissue Plasminogen Activator Release, in Response to Bradykinin
Rosenbaum DA, Pretorius M, Gainer JV, Byrne D, Murphey LJ, Painter CA, Vaughan DE, Brown NJ. Ethnicity Affects Vasodilation, but Not Endothelial Tissue Plasminogen Activator Release, in Response to Bradykinin. Arteriosclerosis Thrombosis And Vascular Biology 2002, 22: 1023-1028. PMID: 12067915, DOI: 10.1161/01.atv.0000017704.45007.1d.Peer-Reviewed Original ResearchConceptsForearm blood flowFibrinolytic functionSodium nitroprussideEffect of ethnicityAge-matched normotensive subjectsTissue plasminogen activator antigenTissue plasminogen activator releaseDoses of bradykininPlasminogen activator antigenPlasminogen activator releaseFBF responseVasodilator responseNormotensive subjectsBrachial arteryIndependent agonistsArterial samplesBlood flowAntigen releaseActivator releaseBradykininMethacholineAcetylcholineWhite AmericansNitroprussideBlack Americans
2001
Interactive Effect of Ethnicity and ACE Insertion/Deletion Polymorphism on Vascular Reactivity
Gainer JV, Stein CM, Neal T, Vaughan DE, Brown NJ. Interactive Effect of Ethnicity and ACE Insertion/Deletion Polymorphism on Vascular Reactivity. Hypertension 2001, 37: 46-51. PMID: 11208755, DOI: 10.1161/01.hyp.37.1.46.Peer-Reviewed Original ResearchACE insertion/deletion polymorphismGreater vasodilator responseVasodilator responseACE D alleleSodium nitroprussideInsertion/deletion polymorphismVascular reactivityEndothelium-independent vasodilator sodium nitroprussideD allelePotent endothelium-dependent vasodilatorVascular smooth muscle reactivityACE I/D genotypeEffect of angiotensinForearm blood flowSmooth muscle reactivityEndothelium-dependent vasodilatorVasodilator sodium nitroprussideDeletion polymorphismTreatment of hypertensionACE gene locusVascular sensitivityNormotensive subjectsNormotensive blacksVenous plethysmographyBlood pressure
2000
Bradykinin Stimulates Tissue Plasminogen Activator Release From Human Forearm Vasculature Through B2 Receptor–Dependent, NO Synthase–Independent, and Cyclooxygenase-Independent Pathway
Brown N, Gainer J, Murphey L, Vaughan D. Bradykinin Stimulates Tissue Plasminogen Activator Release From Human Forearm Vasculature Through B2 Receptor–Dependent, NO Synthase–Independent, and Cyclooxygenase-Independent Pathway. Circulation 2000, 102: 2190-2196. PMID: 11056091, DOI: 10.1161/01.cir.102.18.2190.Peer-Reviewed Original ResearchMeSH Keywords6-Ketoprostaglandin F1 alphaAcetylcholineAdrenergic beta-AntagonistsAdultBradykininBradykinin Receptor AntagonistsCyclooxygenase InhibitorsEndothelium, VascularFemaleForearmHumansIndomethacinInfusions, Intra-ArterialMaleNitric Oxide SynthaseNitroprussideOmega-N-MethylargininePlethysmographyReceptor, Bradykinin B2Regional Blood FlowTissue Plasminogen ActivatorVasodilationVasodilator AgentsConceptsTissue plasminogen activator releaseVasodilator responseL-NMMAPlasminogen activator releaseCyclooxygenase-independent pathwayTPA releaseActivator releaseBasal forearm blood flowReceptor antagonist HOE 140NO synthase inhibitor LHuman endotheliumHuman forearm vasculatureForearm blood flowEffect of indomethacinIntra-arterial bradykininReceptor-dependent effectsCyclooxygenase inhibitor indomethacinMonomethyl-L-arginineForearm vasodilationEndothelial effectsIndomethacin administrationForearm vasculatureHoe 140Receptor antagonismUrinary excretion