2018
Characteristics and treatment of African-American and European-American patients with resistant hypertension identified using the electronic health record in an academic health centre: a case−control study
Shuey MM, Gandelman JS, Chung CP, Nian H, Yu C, Denny JC, Brown NJ. Characteristics and treatment of African-American and European-American patients with resistant hypertension identified using the electronic health record in an academic health centre: a case−control study. BMJ Open 2018, 8: e021640. PMID: 29950471, PMCID: PMC6020960, DOI: 10.1136/bmjopen-2018-021640.Peer-Reviewed Original ResearchMeSH KeywordsAdrenergic beta-AntagonistsAdultAgedAngiotensin Receptor AntagonistsAntihypertensive AgentsBlack or African AmericanBlood PressureCalcium Channel BlockersCase-Control StudiesDiabetes Mellitus, Type 2Electronic Health RecordsFemaleHumansHypertensionLogistic ModelsMaleMiddle AgedMultivariate AnalysisPrevalenceTennesseeWhite PeopleConceptsElectronic health recordsResistant hypertensionBlood pressureChronic kidney disease stage 3Mineralocorticoid receptor antagonist useClinical treatmentDihydropyridine calcium channel blockerAntihypertensive medication classesControlled blood pressureOutpatient blood pressureTotal hypertensive populationAngiotensin receptor blockersTransient ischemic attackDisease stage 3Health recordsMineralocorticoid receptor antagonistsReceptor antagonist useHigh blood pressureIschemic heart diseaseAlpha-2 agonistsBody mass indexCalcium channel blockersAfrican American patientsNumber of patientsType 2 diabetes
2014
Genetic variation in CYP4A11 and blood pressure response to mineralocorticoid receptor antagonism or ENaC inhibition: an exploratory pilot study in African Americans
Laffer CL, Elijovich F, Eckert GJ, Tu W, Pratt JH, Brown NJ. Genetic variation in CYP4A11 and blood pressure response to mineralocorticoid receptor antagonism or ENaC inhibition: an exploratory pilot study in African Americans. International Journal Of Cardiology Cardiovascular Risk And Prevention 2014, 8: 475-480. PMID: 25064769, PMCID: PMC4115247, DOI: 10.1016/j.jash.2014.04.011.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedBlack or African AmericanBlood PressureCytochrome P-450 CYP4ACytochrome P-450 Enzyme SystemDNADouble-Blind MethodFemaleGenetic VariationGenotypeHumansHypertensionMaleMiddle AgedMineralocorticoid Receptor AntagonistsPilot ProjectsRadioimmunoassayUnited StatesYoung AdultConceptsBlood pressure responseBlood pressureReceptor antagonismPressure responseMineralocorticoid receptor antagonismSalt-sensitive hypertensionAfrican AmericansExploratory pilot studyGC individualsAldosterone responseResistant hypertensionAntihypertensive effectTreatment responsePrecluded analysisCC genotypeCC homozygotesSpironolactoneC alleleHypertensionPilot studyENaC activationCYP4A11AmilorideActivation of ENaC.ENaC inhibition
2013
Genetic variants associated with angiotensin-converting enzyme inhibitor-associated angioedema
Pare G, Kubo M, Byrd JB, McCarty CA, Woodard-Grice A, Teo KK, Anand SS, Zuvich RL, Bradford Y, Ross S, Nakamura Y, Ritchie M, Brown NJ. Genetic variants associated with angiotensin-converting enzyme inhibitor-associated angioedema. Pharmacogenetics And Genomics 2013, 23: 470-478. PMID: 23838604, PMCID: PMC3904664, DOI: 10.1097/fpc.0b013e328363c137.Peer-Reviewed Original ResearchMeSH KeywordsAngioedemaAngiotensin-Converting Enzyme InhibitorsBenzimidazolesBenzoatesBlack or African AmericanDouble-Blind MethodDrug Therapy, CombinationGenome-Wide Association StudyHumansIsoenzymesNeprilysinPolymorphism, Single NucleotideProtein Kinase CProtein Kinase C-thetaProto-Oncogene Proteins c-etsRamiprilRepressor ProteinsTelmisartanWhite People
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 Nrf2Lysine-Specific Demethylase 1: An Epigenetic Regulator of Salt-Sensitive Hypertension
Williams JS, Chamarthi B, Goodarzi MO, Pojoga LH, Sun B, Garza AE, Raby BA, Adler GK, Hopkins PN, Brown NJ, Jeunemaitre X, Ferri C, Fang R, Leonor T, Cui J, Guo X, Taylor KD, Chen Y, Xiang A, Raffel LJ, Buchanan TA, Rotter JI, Williams GH, Shi Y. Lysine-Specific Demethylase 1: An Epigenetic Regulator of Salt-Sensitive Hypertension. American Journal Of Hypertension 2012, 25: 812-817. PMID: 22534796, PMCID: PMC3721725, DOI: 10.1038/ajh.2012.43.Peer-Reviewed Original ResearchConceptsMinor allele carriersSalt-sensitive hypertensionBlood pressureSingle nuclear polymorphismsAllele carriersHypertensive cohortDietary saltWT miceLiberal salt dietLiberal salt intakeSystolic blood pressureSerum aldosterone concentrationHeterozygote knockout miceTranslational research studiesRenovascular responsivenessAldosterone concentrationSalt dietDietary sodiumSalt intakeSystolic BPHuman studiesHypertensionKnockout miceClinical relevanceCaucasian cohortCharacterization of Genome-Wide Association-Identified Variants for Atrial Fibrillation in African Americans
Delaney JT, Jeff JM, Brown NJ, Pretorius M, Okafor HE, Darbar D, Roden DM, Crawford DC. Characterization of Genome-Wide Association-Identified Variants for Atrial Fibrillation in African Americans. PLOS ONE 2012, 7: e32338. PMID: 22384221, PMCID: PMC3285683, DOI: 10.1371/journal.pone.0032338.Peer-Reviewed Original Research
2010
The Relationship between Peroxisome Proliferator-Activated Receptor-γ and Renin: A Human Genetics Study
Underwood PC, Sun B, Williams JS, Pojoga LH, Chamarthi B, Lasky-Su J, Raby BA, Hopkins PN, Jeunemaitre X, Brown NJ, Adler GK, Williams GH. The Relationship between Peroxisome Proliferator-Activated Receptor-γ and Renin: A Human Genetics Study. The Journal Of Clinical Endocrinology & Metabolism 2010, 95: e75-e79. PMID: 20631015, PMCID: PMC2936061, DOI: 10.1210/jc.2010-0270.Peer-Reviewed Original ResearchConceptsPRA levelsPeroxisome proliferator-activated receptor gamma agonistPlasma renin activity levelsProliferator-activated receptor gamma agonistsVolume retentionAfrican-American hypertensivesHigh PRA levelsLow-salt dietRenin activity levelsAngiotensin II infusionMajor allele carriersSingle nucleotide polymorphismsC allele carrier statusReceptor gamma agonistsAllele carrier statusII infusionHypertensive participantsCombined P valueHuman hypertensionGamma agonistsNucleotide polymorphismsAllele carriersPPARgamma agonistsPPARgamma geneRenin
2008
Association of a CYP4A11 Variant and Blood Pressure in Black Men
Gainer JV, Lipkowitz MS, Yu C, Waterman MR, Dawson EP, Capdevila JH, Brown NJ, Group A. Association of a CYP4A11 Variant and Blood Pressure in Black Men. Journal Of The American Society Of Nephrology 2008, 19: 1606-1612. PMID: 18385420, PMCID: PMC2488260, DOI: 10.1681/asn.2008010063.Peer-Reviewed Original ResearchConceptsHypertensive renal diseaseRenal diseaseClinical outcomesHigher systolic BPAdverse clinical outcomesWhite individualsRegulation of BPEndogenous arachidonic acidBlack menBaseline proteinuriaCYP4A11 variantsHypertensive nephrosclerosisRenal vasoconstrictorClinical characteristicsCumulative incidenceRenal functionBlood pressureDiastolic BPHigher systolicSystolic BPHigh BPKidney diseasePulse pressureMale miceHypertension
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
Thyroid Function and Blood Pressure Homeostasis in Euthyroid Subjects
Gumieniak O, Perlstein TS, Hopkins PN, Brown NJ, Murphey LJ, Jeunemaitre X, Hollenberg NK, Williams GH. Thyroid Function and Blood Pressure Homeostasis in Euthyroid Subjects. The Journal Of Clinical Endocrinology & Metabolism 2004, 89: 3455-3461. PMID: 15240631, DOI: 10.1210/jc.2003-032143.Peer-Reviewed Original ResearchConceptsMean arterial pressureRenal vascular resistanceBlood pressure homeostasisBaseline mean arterial pressureEffective renal plasma flowRenal plasma flowPressure homeostasisThyroid functionVascular resistanceEuthyroid subjectsBlood pressure salt sensitivitySalt sensitivityBlood pressure responseSystemic vascular resistanceAminohippuric acid clearanceLow sodium dietBody mass indexBaseline characteristicsHypertensive subjectsNormotensive subjectsSubclinical hypothyroidismArterial pressureAcid clearanceMass indexEuthyroid individuals
2000
Altered frequency of a promoter polymorphism of the kinin B2 receptor gene in hypertensive African-Americans*
Gainer J, Brown N, Bachvarova M, Bastien L, Maltais I, Marceau F, Bachvarov D. Altered frequency of a promoter polymorphism of the kinin B2 receptor gene in hypertensive African-Americans*. American Journal Of Hypertension 2000, 13: 1268-1273. PMID: 11130770, DOI: 10.1016/s0895-7061(00)01215-2.Peer-Reviewed Original Research
1999
Frequency of functionally important beta-2 adrenoceptor polymorphisms varies markedly among African-American, Caucasian and Chinese individuals.
Xie HG, Stein CM, Kim RB, Xiao ZS, He N, Zhou HH, Gainer JV, Brown NJ, Haines JL, Wood AJ. Frequency of functionally important beta-2 adrenoceptor polymorphisms varies markedly among African-American, Caucasian and Chinese individuals. Pharmacogenetics And Genomics 1999, 9: 511-6. PMID: 10780271.Peer-Reviewed Original ResearchMeSH KeywordsAsian PeopleBase SequenceBlack or African AmericanBlack PeopleChinaDNA PrimersGenotypeHumansPolymorphism, GeneticReceptors, Adrenergic, beta-2White PeopleConceptsAfrican American individualsChinese individualsEthnic differencesSeverity of hypertensionDifferent ethnic groupsBeta-2 adrenergic receptorsMarked ethnic differencesEthnic groupsAdrenoceptor polymorphismsBAR agonistsGlu27 polymorphismGly16 alleleGlu27 alleleVascular responsesDisease manifestationsHealthy individualsAdrenergic receptorsCommon polymorphismsMarked interethnic differencesInterethnic differencesHomozygous genotypeGln27Arg16PolymorphismAlterations
1996
Increased sensitivity to bradykinin among African Americans
Gainer J, Nadeau J, Ryder D, Brown N. Increased sensitivity to bradykinin among African Americans. Journal Of Allergy And Clinical Immunology 1996, 98: 283-287. PMID: 8757204, DOI: 10.1016/s0091-6749(96)70151-3.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAngioedemaBlack or African AmericanBradykininDouble-Blind MethodDrug HypersensitivityFemaleHumansHypertensionIntradermal TestsMaleMiddle AgedConceptsKallikrein-kinin systemWheal responseAfrican AmericansLife-threatening side effectsTissue kallikrein-kinin systemACE inhibitor-associated angioedemaACE inhibitor doseMechanisms of angioedemaDouble-blind fashionDoses of bradykininAfrican American raceNormotensive African AmericansUrinary kallikrein levelsACE inhibitor-induced increaseInhibitor-induced increaseBradykinin doseConcurrent medicationsEssential hypertensionKallikrein levelsBradykinin levelsExogenous bradykininIntradermal injectionAmerican raceSide effectsInhibitor dose