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
2007
The Bradykinin Type 2 Receptor BE1 Polymorphism and Ethnicity Influence Systolic Blood Pressure and Vascular Resistance
Pretorius MM, Gainer JV, Van Guilder GP, Coelho EB, Luther JM, Fong P, Rosenbaum DD, Malave HA, Yu C, Ritchie MD, Vaughan DE, Brown NJ. The Bradykinin Type 2 Receptor BE1 Polymorphism and Ethnicity Influence Systolic Blood Pressure and Vascular Resistance. Clinical Pharmacology & Therapeutics 2007, 83: 122-129. PMID: 17522594, DOI: 10.1038/sj.clpt.6100250.Peer-Reviewed Original ResearchMeSH KeywordsAdultBlack or African AmericanBlood Flow VelocityBlood PressureBradykininDose-Response Relationship, DrugFemaleForearmGene FrequencyGenotypeHumansInfusions, Intra-ArterialMaleNitroprussidePhenotypePolymorphism, GeneticReceptor, Bradykinin B2Regional Blood FlowVascular ResistanceVasodilator AgentsWhite PeopleConceptsSystolic blood pressureForearm vascular resistanceVascular resistanceBlood pressureEndothelium-independent agonist sodium nitroprussideEndothelium-dependent agonist bradykininIntrabrachial artery infusionsLeft ventricular massBradykinin B2 receptor geneB2 receptor geneNormotensive subjectsVentricular massPulse pressureB2 receptorsAgonist bradykininSodium nitroprussideReceptor geneBradykininGroupPolymorphismInfusionWhite AmericansNitroprussideBaselineBlack Americans
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
1999
Bradykinin Stimulates Tissue Plasminogen Activator Release in Human Vasculature
Brown N, Gainer J, Stein C, Vaughan D. Bradykinin Stimulates Tissue Plasminogen Activator Release in Human Vasculature. Hypertension 1999, 33: 1431-1435. PMID: 10373228, DOI: 10.1161/01.hyp.33.6.1431.Peer-Reviewed Original ResearchConceptsForearm blood flowPlasminogen activator inhibitor antigenTissue plasminogen activator releaseDose-dependent increasePlasminogen activator releaseTPA releaseInhibitor antigenBlood flowActivator releaseMean arterial pressureStrain-gauge plethysmographyHuman vasculatureInfused armNormotensive volunteersArterial pressureVasodilator nitroprussidePlasma levelsTPA antigenHeart rateSystemic effectsSodium nitroprussideAcetylcholineBradykininNitroprussideRandom order
1998
Regulation of local tissue-type plasminogen activator release by endothelium-dependent and endothelium-independent agonists in human vasculature
Stein C, Brown N, Vaughan D, Lang C, Wood A. Regulation of local tissue-type plasminogen activator release by endothelium-dependent and endothelium-independent agonists in human vasculature. Journal Of The American College Of Cardiology 1998, 32: 117-122. PMID: 9669258, DOI: 10.1016/s0735-1097(98)00210-1.Peer-Reviewed Original ResearchConceptsT-PA releaseTissue-type plasminogen activator releaseAdministration of isoproterenolSodium nitroprussidePlasminogen activator releaseVascular endotheliumActivator releasePAI-1Local t-PA releaseAdministration of SNPT-PA antigen levelsNet t-PA releasePlasma t-PA levelsEndothelium-independent agonistsForearm plasma flowNitric oxide agonistsForearm blood flowBeta-adrenoceptor agonistsVenous blood samplesRisk of thrombosisT-PA levelsEnzyme-linked immunosorbent assayPlasminogen activator inhibitorNormotensive menBrachial artery