2023
Testosterone-associated blood pressure dysregulation in women with androgen excess polycystic ovary syndrome
Stone T, Yanes Cardozo L, Oluwatade T, Leone C, Burgos M, Okifo F, Pal L, Reckelhoff J, Stachenfeld N. Testosterone-associated blood pressure dysregulation in women with androgen excess polycystic ovary syndrome. AJP Heart And Circulatory Physiology 2023, 325: h232-h243. PMID: 37327000, PMCID: PMC10393337, DOI: 10.1152/ajpheart.00164.2023.Peer-Reviewed Original ResearchConceptsSympathetic nervous system activityBlood pressure dysregulationPolycystic ovary syndromeBody mass indexBaroreflex gainOvary syndromeBlood pressureObese insulin-resistant womenPolycystic ovary syndrome phenotypesRenin-angiotensin system activationSerum angiotensin-converting enzymeGonadotropin-releasing hormone antagonistLower sympathetic nervous system activityLower body negative pressureHeightened cardiovascular riskInsulin-resistant womenSystolic blood pressureBody negative pressureNervous system activityAngiotensin-converting enzymeIR womenCardiovascular riskSerum aldosteroneBaroreflex controlDiastolic BPSex Hormones and Environmental Factors Affecting Exercise
Wenner M, Stachenfeld N. Sex Hormones and Environmental Factors Affecting Exercise. 2023, 113-134. DOI: 10.1007/978-3-031-21881-1_5.ChaptersSex hormone effectsSex hormonesHormone exposureHormone effectsFluid regulationIndividual sex hormonesReproductive hormone exposurePolycystic ovary syndromeMenstrual cycle differencesSex hormone exposureOnset of thirstCore temperatureOnset of sweatingOvary syndromeExercise trainingHormonal contraceptivesNumerous health benefitsMenstrual cycleHormonal profileReproductive hormonesFluid balancePhysical activityPhysiological systemsHigher sweat ratesSweating thresholdTestosterone effects on autonomic function in women with androgen excess polycystic ovary syndrome
Stone T, Cardozo L, Oluwatade T, Leone C, Okifo F, Reckelhoff J, Pal L, Stachenfeld N. Testosterone effects on autonomic function in women with androgen excess polycystic ovary syndrome. Physiology 2023, 38: 5729543. DOI: 10.1152/physiol.2023.38.s1.5729543.Peer-Reviewed Original ResearchLower body negative pressureBlood pressureHormone interventionSympathetic baroreflexAutonomic functionSimilar systolic blood pressureGonadotropin-releasing hormone antagonistInsulin-resistant womenDiastolic blood pressurePolycystic ovary syndromeSystolic blood pressureCardiovascular autonomic controlBody negative pressureMSNA activitySerum angiotensinOvarian syndromeOvary syndromeResistant womenBaroreflex sensitivityHormone suppressionSerum aldosteroneAutonomic perturbationsT elevationHormone antagonistElevated androgensEffects of androgen excess and body mass index on endothelial function in women with polycystic ovary syndrome
Berbrier D, Leone C, Adler T, Bender J, Taylor H, Stachenfeld N, Usselman C. Effects of androgen excess and body mass index on endothelial function in women with polycystic ovary syndrome. Journal Of Applied Physiology 2023, 134: 868-878. PMID: 36861670, DOI: 10.1152/japplphysiol.00583.2022.Peer-Reviewed Original ResearchConceptsPolycystic ovary syndromeEndothelial dysfunctionEndothelial functionOvary syndromeAndrogen excessLean womenObese womenEstradiol supplementationLow flow-mediated constrictionOW/OB groupOverweight/obese womenMarked endothelial dysfunctionSevere endothelial dysfunctionFree testosterone levelsBody mass indexFlow-mediated dilation (FMD) testFree testosteroneMass indexReactive hyperemiaOB groupTestosterone levelsHealth differEndothelial pathophysiologyDysfunctionAndrogens
2022
Endothelial (Dys)function in Women With Androgen Excess Polycystic Ovary Syndrome: Effects of Body Composition and Ethinyl Estradiol Supplementation
Berbrier D, Leone C, Adler T, Bender J, Taylor H, Stachenfeld N, Usselman C. Endothelial (Dys)function in Women With Androgen Excess Polycystic Ovary Syndrome: Effects of Body Composition and Ethinyl Estradiol Supplementation. The FASEB Journal 2022, 36 DOI: 10.1096/fasebj.2022.36.s1.0r847.Peer-Reviewed Original ResearchOW/OB womenFlow-mediated dilationPolycystic ovary syndromeOB womenEndothelial functionEndothelial dysfunctionLean womenOvary syndromeEstradiol supplementationForms of PCOSConduit vessel endothelial functionOverweight/obese womenHealthy lean womenImpaired endothelial functionResult of obesityVessel endothelial functionFMD changesFMD responseObese womenFree testosteroneOb controlsReactive hyperemiaBody compositionEE supplementationDysfunctionPolycystic ovary syndrome and black race are associated with increased blood pressure
Okifo N, Pal L, Mushi M, Stachenfeld N. Polycystic ovary syndrome and black race are associated with increased blood pressure. The FASEB Journal 2022, 36 DOI: 10.1096/fasebj.2022.36.s1.r3724.Peer-Reviewed Original ResearchOlder reproductive age womenReproductive-age womenNon-obese groupPolycystic ovary syndromeMultivariable linear regression modelsBlood pressureAge womenObese groupBlack raceBP indicesOvary syndromeRacial breakdownDiagnosis of PCOSNon-obese womenCardiovascular disease riskMultivariable linear regressionType II diabetesLinear regression modelsGreater systolicTubal infertilityIndependent predictorsCommon endocrinopathyRegression modelsBP measurementsPCOSSubclinical cardiovascular disease and polycystic ovary syndrome
Gomez JMD, VanHise K, Stachenfeld N, Chan JL, Merz NB, Shufelt C. Subclinical cardiovascular disease and polycystic ovary syndrome. Fertility And Sterility 2022, 117: 912-923. PMID: 35512975, PMCID: PMC10322116, DOI: 10.1016/j.fertnstert.2022.02.028.Peer-Reviewed Original ResearchConceptsPolycystic ovary syndromeSubclinical cardiovascular diseaseCardiovascular diseaseOvary syndromeCoronary artery calcium scoreCarotid intima-media thicknessOvert cardiovascular diseaseArtery calcium scoreFlow-mediated dilationIntima-media thicknessCalcium scoreDiabetes mellitusMetabolic syndromeArterial stiffnessIrregular mensesInsulin resistanceEpicardial fatMetabolic disordersVascular endotheliumSyndromeHallmark featureDiseaseWomenHyperandrogenismDyslipidemiaConsequences of hyperandrogenemia during pregnancy in female offspring: attenuated response to angiotensin II
Shawky NM, Dalmasso C, Ojeda NB, Zuchowski Y, Stachenfeld N, Alexander BT, Reckelhoff JF. Consequences of hyperandrogenemia during pregnancy in female offspring: attenuated response to angiotensin II. Journal Of Hypertension 2022, 40: 712-722. PMID: 34980865, PMCID: PMC8897268, DOI: 10.1097/hjh.0000000000003067.Peer-Reviewed Original ResearchConceptsPolycystic ovary syndromeAttenuated pressor responsesPressor responseBlood pressureAng IIHyperandrogenemic femalesAngiotensin IIFemale offspringModel of PCOSNitrate/nitrite excretionSimilar baseline blood pressureIntrarenal Ang IIBaseline blood pressureElevated blood pressureExaggerated pressor responseHigh-salt dietLow birth weightFemale control offspringDihydrotestosterone pelletsMaternal hyperandrogenemiaMore proteinuriaPCOS womenOvary syndromeRenal injurySalt diet
2021
Androgen Effects on Baroreflex Sensitivity in Women with AE‐PCOS
Stone T, Chiles M, Leone C, Pal L, Stachenfeld N. Androgen Effects on Baroreflex Sensitivity in Women with AE‐PCOS. The FASEB Journal 2021, 35 DOI: 10.1096/fasebj.2021.35.s1.04149.Peer-Reviewed Original ResearchMuscle sympathetic nerve activityLower body negative pressureSympathetic baroreflex sensitivityPolycystic ovary syndromeBaroreflex sensitivityBR controlDiastolic BPHormone suppressionImpaired blood pressure regulationGonadotropin-releasing hormone antagonistOral glucose tolerance testDays of GnRHSympathetic nerve activityInsulin-resistant womenMean arterial pressureVascular resistance changesReproductive-age womenGlucose tolerance testBody negative pressureBlood pressure regulationSuppression of E2Bursts/100 heartbeatsCardiovascular comorbiditiesPCOS phenotypeResistant women
2020
Pathophysiological effects of androgens on the female vascular system
Stone T, Stachenfeld NS. Pathophysiological effects of androgens on the female vascular system. Biology Of Sex Differences 2020, 11: 45. PMID: 32727622, PMCID: PMC7391603, DOI: 10.1186/s13293-020-00323-6.ChaptersConceptsFemale cardiovascular systemPolycystic ovary syndromeFemale vasculatureHormone therapyOvary syndromePathophysiological effectsCardiovascular systemTransgender menPrimary medical interventionSignificant medical risksHigh blood pressureCardiovascular disease statesEffects of testosteroneEndogenous androgen concentrationsSex differencesPotential causative linkChronic hyperandrogenismTestosterone dosesEndothelial dysfunctionBlood pressurePatient groupVascular functionCardiovascular regulationSex hormonesAndrogen receptorAutonomic Dysfunction in Women with Androgen Excess PCOS
Stone T, Leone C, Ayers T, Stachenfeld N. Autonomic Dysfunction in Women with Androgen Excess PCOS. The FASEB Journal 2020, 34: 1-1. DOI: 10.1096/fasebj.2020.34.s1.01846.Peer-Reviewed Original ResearchLower body negative pressurePolycystic ovary syndromeForearm vascular resistanceGnRH-antBlood pressureBaroreflex sensitivityEstrogen suppressionBRS slopeHormone suppressionAutonomic functionElevated blood pressureReproductive-age womenBody negative pressureTestosterone-induced changesAutonomic dysfunctionMild hypertensionVascular resistanceObese womenOvary syndromeGnRH antagonistAge womenBP regulationCardiovascular diseaseReproductive endocrinopathyBiochemical manifestations
2019
Androgens drive microvascular endothelial dysfunction in women with polycystic ovary syndrome: role of the endothelin B receptor
Usselman CW, Yarovinsky T, Steele FE, Leone CA, Taylor HS, Bender JR, Stachenfeld NS. Androgens drive microvascular endothelial dysfunction in women with polycystic ovary syndrome: role of the endothelin B receptor. The Journal Of Physiology 2019, 597: 2853-2865. PMID: 30847930, DOI: 10.1113/jp277756.Peer-Reviewed Original ResearchMeSH KeywordsAdultAndrogensCardiovascular DiseasesDihydrotestosteroneEndothelin-1Endothelium, VascularEstrogensEthinyl EstradiolFemaleGlucose Tolerance TestHumansMicrovesselsNitric OxideObesityPolycystic Ovary SyndromeReceptor, Endothelin BSkinVascular Endothelial Growth Factor AVasodilationYoung AdultConceptsPolycystic ovary syndromeCardiovascular dysfunctionEndothelial dysfunctionOvary syndromeEndothelin-1Endothelial functionNO productionAndrogen receptor-dependent mannerEndothelin-B receptor subtypeCardiovascular risk factorsMicrovascular endothelial dysfunctionMicrovascular endothelial functionCutaneous vascular conductanceB receptor subtypesEndothelin B receptorLaser Doppler flowmetryNitric oxide inhibitionReceptor-dependent mannerEndothelial cell NO productionDose-response curveVasodilating responsePCOS subjectsLean womenObese womenVascular conductance
2017
Microvascular endothelial function in lean versus obese women with polycystic ovary syndrome: role of the endothelin B receptor
Usselman C, Taylor H, Stachenfeld N. Microvascular endothelial function in lean versus obese women with polycystic ovary syndrome: role of the endothelin B receptor. The FASEB Journal 2017, 31 DOI: 10.1096/fasebj.31.1_supplement.691.5.Peer-Reviewed Original ResearchPolycystic ovary syndromeLean polycystic ovary syndromeObese PCOS womenCutaneous vascular conductanceNitric oxide inhibitionObese womenET-1PCOS womenOvary syndromeVasodilatory responseEndothelial functionOxide inhibitionEndothelin receptor subtype BObese polycystic ovary syndromeIntradermal microdialysis perfusionCardiovascular risk factorsMicrovascular endothelial functionPlasma endothelin-1Adverse cardiovascular outcomesAmerican Heart AssociationEndothelin B receptorLaser Doppler flowmetryDose-response curveCardiovascular outcomesIndependent vasodilationRelationship between body mass index and endothelial dysfunction in women with and without polycystic ovary syndrome
Adler T, Usselman C, Anaeto L, Schapiro R, Steele F, Toffoloni N, Takamata A, Taylor H, Stachenfeld N. Relationship between body mass index and endothelial dysfunction in women with and without polycystic ovary syndrome. The FASEB Journal 2017, 31 DOI: 10.1096/fasebj.31.1_supplement.691.8.Peer-Reviewed Original ResearchPolycystic ovary syndromeEndothelial dysfunctionOvary syndromeFlow-mediated dilation responseSympathetic nervous system activationCardiovascular disease riskBody mass indexFlow-mediated dilation (FMD) testAmerican Heart AssociationMinutes of occlusionNervous system activationRotterdam criteriaFMD responseBrachial arteryEndothelial functionEndothelial healthHealthy womenHyperemic responseMass indexSuprasystolic pressureControl womenHeart AssociationInsulin resistanceClinical indicesReproductive age
2016
Sex Hormones and Environmental Factors Affecting Exercise
Wenner M, Stachenfeld N. Sex Hormones and Environmental Factors Affecting Exercise. 2016, 151-170. DOI: 10.1007/978-3-319-44558-8_9.Peer-Reviewed Original ResearchSex hormone effectsSex hormonesHormone exposureHormone effectsFluid regulationIndividual sex hormonesReproductive hormone exposurePolycystic ovary syndromeMenstrual cycle differencesSex hormone exposureOnset of thirstCore temperatureOnset of sweatingOvary syndromeExercise trainingHormonal contraceptivesNumerous health benefitsMenstrual cycleHormonal profileReproductive hormonesFluid balancePhysical activityPhysiological systemsHigher sweat ratesSweating threshold
2015
Sex hormone effects on autonomic mechanisms of thermoregulation in humans
Charkoudian N, Stachenfeld N. Sex hormone effects on autonomic mechanisms of thermoregulation in humans. Autonomic Neuroscience 2015, 196: 75-80. PMID: 26674572, DOI: 10.1016/j.autneu.2015.11.004.ChaptersConceptsAutonomic mechanismsReproductive hormonesBody temperatureCentral autonomic nucleusHeat dissipation responsePolycystic ovary syndromeFemale reproductive hormonesPeripheral blood vesselsInfluence of progesteroneSkin blood flowAutonomic nucleiOvary syndromePeripheral effectsMenstrual cycleHormone levelsBlood flowHormone effectsLow body temperatureBlood vesselsEstrogenHigh body temperatureRecent evidenceMenopauseProgesteroneThermoregulatory responses
2013
Androgens influence microvascular dilation in PCOS through ET-A and ET-B receptors
Wenner MM, Taylor HS, Stachenfeld NS. Androgens influence microvascular dilation in PCOS through ET-A and ET-B receptors. AJP Endocrinology And Metabolism 2013, 305: e818-e825. PMID: 23921139, PMCID: PMC3798701, DOI: 10.1152/ajpendo.00343.2013.Peer-Reviewed Original ResearchConceptsPolycystic ovary syndromeET-B receptorsMicrovascular dilationHeat-induced vasodilationReceptor inhibitionET-B receptor antagonistGonadotropin-releasing hormone antagonistLaser Doppler flowmetryAndrogen suppressionOvary syndromeVascular dysfunctionHealthy womenT administrationEnhanced vasodilationHormone antagonistReceptor antagonistCutaneous microdialysisDoppler flowmetryTestosterone effectsSubtype receptorsVasodilationDay 8WomenDilationGnRHantETA subtype receptor sensitivity to testosterone contributes to microvascular dysfunction in PCOS
Stachenfeld N, Wenner M, Taylor H. ETA subtype receptor sensitivity to testosterone contributes to microvascular dysfunction in PCOS. The FASEB Journal 2013, 27: 1133.10-1133.10. DOI: 10.1096/fasebj.27.1_supplement.1133.10.Peer-Reviewed Original ResearchPolycystic ovary syndromeCutaneous vascular conductanceHeat-induced vasodilationEndothelium-mediated vasodilationETB receptor antagonistLaser Doppler flowmetryETA blockadeTestosterone contributesEndothelial dysfunctionOvary syndromeVascular conductanceVasoconstrictor toneETA receptorsHormone antagonistReceptor antagonistMicrodialysis infusionSex hormonesDoppler flowmetryReceptor mechanismsReceptor sensitivityDay 8Day 4VasodilationDysfunctionAntagonistTestosterone modulates sodium‐regulating hormones in women with PCOS
Stachenfeld N, Wenner M, Taylor H. Testosterone modulates sodium‐regulating hormones in women with PCOS. The FASEB Journal 2013, 27: 904.5-904.5. DOI: 10.1096/fasebj.27.1_supplement.904.5.Peer-Reviewed Original ResearchPolycystic ovary syndromePlasma renin activityHormone conditionsRenal sodium handlingAldosterone systemRenin activityOvary syndromeSerum aldosteroneSodium handlingHormone antagonistSex hormonesAldosteroneDay 8Day 4Sodium regulationGnRHantWomenTestosteroneHormoneHyperandrogenismGonadotropinSyndromeAntagonistKidney
2011
Sex differences in endothelial function in the microvasculature: effects of PCOS
Stachenfeld N, Wenner M, Taylor H. Sex differences in endothelial function in the microvasculature: effects of PCOS. The FASEB Journal 2011, 25: 837.2-837.2. DOI: 10.1096/fasebj.25.1_supplement.837.2.Peer-Reviewed Original ResearchPolycystic ovary syndromeETB receptorsEffects of PCOSHeart disease riskLaser Doppler flowmetrySkin blood flowNormal reproductive functionDose-response curveEndothelial dysfunctionOvary syndromeVasoconstrictive responseVasodilatory responseEndothelial functionCutaneous microvasculatureETA receptorsHealthy womenAntagonist infusionDoppler flowmetrySmooth muscleBlood flowReceptor AReproductive functionDisease riskWomenReceptors