2023
Bradykinin B2 receptor blockade and intradialytic hypotension
Gamboa J, Mambungu C, Clagett A, Nian H, Yu C, Ikizler T, Brown N. Bradykinin B2 receptor blockade and intradialytic hypotension. BMC Nephrology 2023, 24: 134. PMID: 37170244, PMCID: PMC10176680, DOI: 10.1186/s12882-023-03192-4.Peer-Reviewed Original ResearchConceptsBradykinin B2 receptor blockadeB2 receptor blockadeMaintenance hemodialysisBlood pressureReceptor blockersReceptor blockadeIntradialytic hypotensionBradykinin B2 receptor blockerLack of vasoconstrictionProduction of vasodilatorsSystolic blood pressureGroup of patientsCrossover clinical trialCommon clinical complicationHemodynamic effectsClinical complicationsContinuous infusionClinical trialsStratified analysisIcatibantHemodialysisPatientsHypotensionPlaceboCompensatory mechanisms
2022
Comparison of Pharmacy Refill Data With Chemical Adherence Testing in Assessing Medication Nonadherence in a Safety Net Hospital Setting
Osula D, Wu B, Schesing K, Das SR, Moss E, Alvarez K, Clark C, Halm EA, Brown NJ, Vongpatanasin W. Comparison of Pharmacy Refill Data With Chemical Adherence Testing in Assessing Medication Nonadherence in a Safety Net Hospital Setting. Journal Of The American Heart Association 2022, 11: e027099. PMID: 36193931, PMCID: PMC9673714, DOI: 10.1161/jaha.122.027099.Peer-Reviewed Original ResearchMeSH KeywordsAdrenergic beta-AntagonistsAngiotensin Receptor AntagonistsAngiotensin-Converting Enzyme InhibitorsAntihypertensive AgentsCalcium Channel BlockersCross-Sectional StudiesHumansHydroxymethylglutaryl-CoA Reductase InhibitorsHypertensionMedication AdherencePharmacySafety-net ProvidersSodium Chloride Symporter InhibitorsConceptsEnzyme inhibitors/angiotensin receptor blockersAngiotensin receptor blockersCalcium channel blockersReceptor blockersPositive predictive valueUncontrolled hypertensionBeta blockersMedication nonadherenceAntihypertensive drugsDrug classesChannel blockersAngiotensin-converting enzyme inhibitors/angiotensin receptor blockersPredictive valueAdherence testingSafety-net hospital settingSafety-net health systemLow positive predictive valuePharmacy refill dataProportion of daysCross-sectional studyPlasma drug levelsDiagnostic test characteristicsPharmacy fill dataCommon cardiovascular drugsRefill dataDPP4 (Dipeptidyl Peptidase-4) Inhibition Increases Catecholamines Without Increasing Blood Pressure During Sustained ACE (Angiotensin-Converting Enzyme) Inhibitor Treatment
Wilson JR, Garner EM, Mashayekhi M, Hubers SA, Bustamante C, Kerman SJ, Nian H, Shibao CA, Brown NJ. DPP4 (Dipeptidyl Peptidase-4) Inhibition Increases Catecholamines Without Increasing Blood Pressure During Sustained ACE (Angiotensin-Converting Enzyme) Inhibitor Treatment. Hypertension 2022, 79: 827-835. PMID: 35045722, PMCID: PMC8917054, DOI: 10.1161/hypertensionaha.121.18348.Peer-Reviewed Original ResearchMeSH KeywordsAdultAngiotensin Receptor AntagonistsAngiotensin-Converting Enzyme InhibitorsAngiotensinsAprepitantBlood PressureCardiovascular AgentsCatecholaminesCross-Over StudiesDiabetes Mellitus, Type 2Dipeptidyl Peptidase 4HumansNorepinephrineRamiprilRenin-Angiotensin SystemSitagliptin PhosphateValsartanConceptsDPP4 inhibitionBlood pressureACE inhibitionDouble-blind crossover studyAcute ACE inhibitionBlood pressure armNK1 receptor blockerACE inhibitor treatmentOral diabetes medicationsCalcium channel blockersType 2 diabetesEffects of DPP4Aldosterone systemCardiovascular complicationsDiabetes medicationsReceptor blockersCardiovascular effectsCrossover therapyHeart failureHypotensive effectCrossover studyChannel blockersDPP4 inhibitorsHeart rateInhibitor treatment
2020
Exome Sequencing Reveals Common and Rare Variants in F5 Associated With ACE Inhibitor and Angiotensin Receptor Blocker–Induced Angioedema
Maroteau C, Siddiqui M, Veluchamy A, Carr F, White M, Cassidy AJ, Baranova EV, Rasmussen ER, Eriksson N, Bloch KM, Brown NJ, Bygum A, Hallberg P, Karawajczyk M, Magnusson PKE, Yue Q, Syvänen A, von Buchwald C, Alfirevic A, der Zee A, Wadelius M, Palmer CNA, PREDICTION‐ADR. Exome Sequencing Reveals Common and Rare Variants in F5 Associated With ACE Inhibitor and Angiotensin Receptor Blocker–Induced Angioedema. Clinical Pharmacology & Therapeutics 2020, 108: 1195-1202. PMID: 32496628, PMCID: PMC10306231, DOI: 10.1002/cpt.1927.Peer-Reviewed Original ResearchMeSH KeywordsAgedAngioedemaAngiotensin Receptor AntagonistsAngiotensin-Converting Enzyme InhibitorsCase-Control StudiesDNA Mutational AnalysisEuropeExomeExome SequencingFactor VFemaleGenetic Predisposition to DiseaseGenome-Wide Association StudyHumansMaleMiddle AgedMutation RateMutation, MissenseRisk AssessmentRisk FactorsUnited StatesConceptsAngiotensin receptor blockersACEi-AEReceptor blockersLife-threatening adverse reactionsMissense variantsRare variantsCommon variantsRare missense variantsGene risk scoreACE inhibitorsAdverse reactionsDeleterious missense variantsHigh riskRisk scoreAngioedemaEnzyme inhibitorsNeck regionExome sequencingAsian populationsDifferent centersBlood clottingBlockersF5 geneRiskInhibitors
2019
Dipeptidyl Peptidase 4 Inhibition Increases Postprandial Norepinephrine via Substance P (NK1 Receptor) During RAAS Inhibition
Wilson JR, Kerman SJ, Hubers SA, Yu C, Nian H, Grouzmann E, Eugster PJ, Mayfield DS, Brown NJ. Dipeptidyl Peptidase 4 Inhibition Increases Postprandial Norepinephrine via Substance P (NK1 Receptor) During RAAS Inhibition. Journal Of The Endocrine Society 2019, 3: 1784-1798. PMID: 31528826, PMCID: PMC6734191, DOI: 10.1210/js.2019-00185.Peer-Reviewed Original ResearchPostprandial blood pressureDPP4 inhibitionNPY 1Blood pressureHeart failureACE inhibitionSubstance PVasoactive peptidesPostprandial glucagon-like peptide-1Substance P receptor blockadeDipeptidyl peptidase-4 inhibitorsGlucagon-like peptide-1Mixed-meal studyAngiotensin receptor blockersDouble-blind treatmentPeptidase-4 inhibitorsType 2 diabetesReceptor-dependent mechanismAntihypertensive groupNPY 3Y1 agonistRAAS inhibitionReceptor blockersReceptor blockadeACE inhibitors
2018
DPP (Dipeptidyl Peptidase)-4 Inhibition Potentiates the Vasoconstrictor Response to NPY (Neuropeptide Y) in Humans During Renin-Angiotensin-Aldosterone System Inhibition
Hubers SA, Wilson JR, Yu C, Nian H, Grouzmann E, Eugster P, Shibao CA, Billings FT, Jafarian Kerman S, Brown NJ. DPP (Dipeptidyl Peptidase)-4 Inhibition Potentiates the Vasoconstrictor Response to NPY (Neuropeptide Y) in Humans During Renin-Angiotensin-Aldosterone System Inhibition. Hypertension 2018, 72: 712-719. PMID: 29987109, PMCID: PMC6202157, DOI: 10.1161/hypertensionaha.118.11498.Peer-Reviewed Original ResearchConceptsNPY infusionPlacebo-controlled crossover studyAngiotensin-converting enzyme inhibitorAldosterone system inhibitionDose-dependent vasoconstrictionIntra-arterial enalaprilatAngiotensin receptor blockersForearm blood flowHigh-risk patientsOrder of treatmentReceptor blockersVasoconstrictor effectVasoconstrictor responsesCardiovascular effectsRenin-AngiotensinBrachial arteryHeart failureNorepinephrine releaseCrossover studyEndogenous NPYY1 receptorCrossover treatmentSystem inhibitionY2 receptorsDPP4 inhibitionAngiotensin receptor blocker vs ACE inhibitor effects on HDL functionality in patients on maintenance hemodialysis
Kaseda R, Tsuchida Y, Gamboa JL, Zhong J, Zhang L, Yang H, Dikalova A, Bian A, Davies S, Fogo AF, Linton MF, Brown NJ, Ikizler TA, Kon V. Angiotensin receptor blocker vs ACE inhibitor effects on HDL functionality in patients on maintenance hemodialysis. Nutrition Metabolism And Cardiovascular Diseases 2018, 28: 582-591. PMID: 29691148, PMCID: PMC5959764, DOI: 10.1016/j.numecd.2018.02.020.Peer-Reviewed Original ResearchConceptsAngiotensin receptor blockersHigh-density lipoproteinToll-like receptorsAnti-inflammatory effectsReceptor blockersCytokine responsesActivation of TLRsSerum amyloid A (SAA) levelsACE inhibitor effectsHigh cardiovascular riskAdvanced kidney diseaseMaintenance hemodialysis patientsInflammatory cytokine responseAnti-oxidative effectsACEI treatmentAtheroprotective actionARB treatmentCardiovascular eventsMaintenance hemodialysisAngiotensin actionCardiovascular riskHemodialysis patientsCellular superoxide productionHDL functionalityKidney disease
2016
Combined Angiotensin Receptor Antagonism and Neprilysin Inhibition
Hubers SA, Brown NJ. Combined Angiotensin Receptor Antagonism and Neprilysin Inhibition. Circulation 2016, 133: 1115-1124. PMID: 26976916, PMCID: PMC4800749, DOI: 10.1161/circulationaha.115.018622.Peer-Reviewed Original ResearchMeSH KeywordsAbnormalities, Drug-InducedAminobutyratesAngioedemaAngiotensin Receptor AntagonistsBiphenyl CompoundsBradykininContraindicationsDrug CombinationsDrug CostsDrug SynergismEnalaprilEnzyme InhibitorsFemaleFollow-Up StudiesHeart FailureHumansHyperkalemiaHypertensionKidneyMulticenter Studies as TopicNatriuretic PeptidesNeprilysinPregnancyProdrugsProspective StudiesPyridinesRandomized Controlled Trials as TopicStroke VolumeTetrazolesThiazepinesValsartanConceptsValsartan/sacubitrilReduced ejection fractionHeart failureNatriuretic peptideEjection fractionN-terminal pro-brain natriuretic peptideNeprilysin inhibitor prodrug sacubitrilPro-brain natriuretic peptideAngiotensin receptor blocker valsartanAngiotensin receptor antagonismAngiotensin receptor blockersHeart Failure TrialReceptor blocker valsartanAngiotensin receptor antagonistsBrain natriuretic peptideOngoing clinical trialsMechanism of actionNeprilysin inhibitionAldosterone antagonistsAldosterone systemReceptor blockersBlood pressureFailure TrialPathophysiological mechanismsReceptor antagonism
2015
Angiotensin converting enzyme inhibition increases ADMA concentration in patients on maintenance hemodialysis – a randomized cross-over study
Gamboa JL, Pretorius M, Sprinkel KC, Brown NJ, Ikizler TA. Angiotensin converting enzyme inhibition increases ADMA concentration in patients on maintenance hemodialysis – a randomized cross-over study. BMC Nephrology 2015, 16: 167. PMID: 26494370, PMCID: PMC4618919, DOI: 10.1186/s12882-015-0162-x.Peer-Reviewed Original ResearchConceptsEnd-stage renal diseaseAngiotensin receptor blockersMaintenance hemodialysisCross-over studyADMA levelsAsymmetric dimethylarginineACE inhibitionADMA productionADMA concentrationsShort-term ACE inhibitionRandomized cross-over studyIntracellular ADMA concentrationStudy of patientsEffect of bradykininB2 receptor stimulationACE inhibitor-induced increaseInhibitor-induced increaseRamipril treatmentCardiovascular morbidityReceptor blockersEndothelial dysfunctionRenal diseaseBradykinin levelsBackgroundEndothelial dysfunctionDialysis session
2013
An LC–MS assay for the screening of cardiovascular medications in human samples
Dias E, Hachey B, McNaughton C, Nian H, Yu C, Straka B, Brown NJ, Caprioli RM. An LC–MS assay for the screening of cardiovascular medications in human samples. Journal Of Chromatography B 2013, 937: 44-53. PMID: 24013190, PMCID: PMC3800555, DOI: 10.1016/j.jchromb.2013.08.010.Peer-Reviewed Original ResearchConceptsAngiotensin II receptor blockersDrug metabolitesCardiovascular drugsDrug classesHospitalized patientsSingle LC-MS/MS methodLC-MS assayLC-MS/MS methodII receptor blockersCalcium channel blockersCardiovascular drug classesClinical samplesDrug detectionSpiked samplesMS methodCardiovascular medicationsReceptor blockersBeta blockersMedication administrationChannel blockersEnzyme inhibitorsClinical settingBlockersDrugsSimultaneous analysis
2011
Combined angiotensin-converting enzyme inhibition and receptor blockade associate with increased risk of cardiovascular death in hemodialysis patients
Chan KE, Ikizler TA, Gamboa JL, Yu C, Hakim RM, Brown NJ. Combined angiotensin-converting enzyme inhibition and receptor blockade associate with increased risk of cardiovascular death in hemodialysis patients. Kidney International 2011, 80: 978-985. PMID: 21775975, PMCID: PMC3656595, DOI: 10.1038/ki.2011.228.Peer-Reviewed Original ResearchMeSH KeywordsAnalysis of VarianceAngiotensin II Type 1 Receptor BlockersAngiotensin-Converting Enzyme InhibitorsAntihypertensive AgentsCardiovascular DiseasesDrug Therapy, CombinationFemaleHumansHypertensionKaplan-Meier EstimateKidney Failure, ChronicLogistic ModelsMaleMiddle AgedPropensity ScoreProportional Hazards ModelsRenal DialysisRetrospective StudiesRisk AssessmentRisk FactorsSurvival RateTime FactorsTreatment OutcomeUnited StatesConceptsAngiotensin receptor blockersAntihypertensive medicationsARB therapyCardiovascular deathChronic hemodialysisCardiovascular mortalityHazard ratioHemodialysis patientsRisk factorsBaseline cardiovascular risk factorsAngiotensin-converting enzyme inhibitionLarge dialysis providerCardiovascular risk factorsChronic hemodialysis patientsKaplan-Meier methodMortality hazard ratioAntihypertensive therapyReceptor blockersAntihypertensive agentsCox regressionCerebrovascular mortalityClinical trialsTreatment weightingObservational studyACEIThis is not Dr. Conn's aldosterone anymore.
Brown NJ. This is not Dr. Conn's aldosterone anymore. Transactions Of The American Clinical And Climatological Association 2011, 122: 229-43. PMID: 21686229, PMCID: PMC3116341.Peer-Reviewed Original ResearchMeSH KeywordsAldosteroneAngiotensin IIAngiotensin II Type 1 Receptor BlockersAngiotensin-Converting Enzyme InhibitorsAnimalsBlood PressureCytochrome P-450 CYP11B2Disease Models, AnimalEnzyme InhibitorsFibrosisGene Expression RegulationHumansHyperaldosteronismInflammation MediatorsKidneyLigandsMiceMineralocorticoid Receptor AntagonistsMyocardiumRatsReceptors, MineralocorticoidSignal TransductionTime FactorsConceptsMR-independent pathwayPrevalence of hyperaldosteronismAngiotensin receptor blockersMineralocorticoid receptor antagonismSecretion of aldosteroneAldosterone-secreting adenomasPro-fibrotic effectsReceptor blockersResistant hypertensionSevere hypertensionAldosterone concentrationRenal injuryEndogenous aldosteroneACE inhibitorsCardiovascular remodelingAngiotensin IIReceptor antagonismHeart diseaseProfibrotic effectsAldosteroneBaseline valuesEnzyme inhibitorsPatientsPotassium homeostasisHypertension
2009
Dipeptidyl Peptidase-IV Inhibitor Use Associated With Increased Risk of ACE Inhibitor-Associated Angioedema
Brown NJ, Byiers S, Carr D, Maldonado M, Warner BA. Dipeptidyl Peptidase-IV Inhibitor Use Associated With Increased Risk of ACE Inhibitor-Associated Angioedema. Hypertension 2009, 54: 516-523. PMID: 19581505, PMCID: PMC2758288, DOI: 10.1161/hypertensionaha.109.134197.Peer-Reviewed Original ResearchConceptsACE inhibitorsRisk of angioedemaVildagliptin useDPP-IV inhibitorsComparator-treated patientsEnzyme (ACE) inhibitor-associated angioedemaStudy drug exposureAngiotensin receptor blockersPhase III studyPossible drug-drug interactionsIncidence of angioedemaCase report formsDipeptidyl peptidase IV inhibitorsDrug-drug interactionsDPP-IV inhibitor vildagliptinPathogenesis of angiotensinPeptidase IV inhibitorsAngioedema riskClinical angioedemaReceptor blockersIII studyAbsolute riskAdjudication committeeDPP-IV inhibitionDrug exposure
1991
Caffeine potentiates the renin response to diazoxide in man. Evidence for a regulatory role of endogenous adenosine.
Brown NJ, Porter J, Ryder D, Branch RA. Caffeine potentiates the renin response to diazoxide in man. Evidence for a regulatory role of endogenous adenosine. Journal Of Pharmacology And Experimental Therapeutics 1991, 256: 56-61. PMID: 1988669.Peer-Reviewed Original ResearchConceptsRenin responseEndogenous adenosineRenin releaseDiazoxide infusionAdenosine inhibitsRegulation of reninCross-over studyAdministration of diazoxideAdenosine receptor blockerModest tachycardiaPRA responseReceptor blockersBP responseLoading dosePRA measurementsContinuous infusionNormal subjectsStudy daysDiazoxideMaximal pulseInfusionPresence of caffeineReninCaffeineAdenosine