2024
Stiffening of the human proximal pulmonary artery with increasing age
Manning E, Mishall P, Ramachandra A, Hassab A, Lamy J, Peters D, Murphy T, Heerdt P, Singh I, Downie S, Choudhary G, Tellides G, Humphrey J. Stiffening of the human proximal pulmonary artery with increasing age. Physiological Reports 2024, 12: e16090. PMID: 38884325, PMCID: PMC11181131, DOI: 10.14814/phy2.16090.Peer-Reviewed Original ResearchConceptsProximal pulmonary arteriesPulmonary arteryAge-related stiffeningRight ventricular ejection fractionVentricular ejection fractionMean wall thicknessEjection fractionNo significant differenceSystemic circulationLuminal caliberDiffusing capacityArterial stiffeningIncreasing ageSignificant differenceDistensionArteryWall thicknessAdverse effectsWall strainVessel diameterCyclic biaxial strainOrgan donorsAgeMicrostructural remodeling
2018
Compromised mechanical homeostasis in arterial aging and associated cardiovascular consequences
Ferruzzi J, Madziva D, Caulk AW, Tellides G, Humphrey JD. Compromised mechanical homeostasis in arterial aging and associated cardiovascular consequences. Biomechanics And Modeling In Mechanobiology 2018, 17: 1281-1295. PMID: 29754316, PMCID: PMC8344131, DOI: 10.1007/s10237-018-1026-7.Peer-Reviewed Original ResearchMeSH KeywordsAgingAnimalsAorta, AbdominalAorta, ThoracicBiomechanical PhenomenaCardiovascular DiseasesCardiovascular SystemCarotid ArteriesCarotid Artery, CommonDiastoleDisease Models, AnimalElastinExtracellular Matrix ProteinsHemodynamicsHomeostasisHumansMaleMiceModels, CardiovascularPressureRecombinant ProteinsStress, MechanicalTime FactorsVascular StiffnessConceptsCentral arteriesMale wild-type miceArterial wallAberrant matrix remodelingCentral pulse pressureInfrarenal abdominal aortaCommon carotid arteryWild-type miceDiastolic functionCardiovascular consequencesCardiac massHemodynamic sequelaePulse pressureAbdominal aortaThoracic aortaArterial agingVascular agingCommon findingTreatment strategiesCarotid arteryArteryLeft ventricleCarotid vesselsCentral vesselsVivo axial stretch
2017
mTOR (Mechanistic Target of Rapamycin) Inhibition Decreases Mechanosignaling, Collagen Accumulation, and Stiffening of the Thoracic Aorta in Elastin-Deficient Mice
Jiao Y, Li G, Li Q, Ali R, Qin L, Li W, Qyang Y, Greif DM, Geirsson A, Humphrey JD, Tellides G. mTOR (Mechanistic Target of Rapamycin) Inhibition Decreases Mechanosignaling, Collagen Accumulation, and Stiffening of the Thoracic Aorta in Elastin-Deficient Mice. Arteriosclerosis Thrombosis And Vascular Biology 2017, 37: 1657-1666. PMID: 28751568, PMCID: PMC5574180, DOI: 10.1161/atvbaha.117.309653.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAorta, ThoracicAortic DiseasesCell ProliferationCollagenElastinEverolimusFocal Adhesion Kinase 1Genetic Predisposition to DiseaseHumansImatinib MesylateMechanistic Target of Rapamycin Complex 1Mechanistic Target of Rapamycin Complex 2Mechanotransduction, CellularMice, Inbred C57BLMice, KnockoutMultiprotein ComplexesMuscle, Smooth, VascularPhenotypePhosphorylationProtein Kinase InhibitorsSirolimusTime FactorsTOR Serine-Threonine KinasesVascular StiffnessWilliams SyndromeConceptsElastin deficiencyCollagen accumulationArterial phenotypeNull miceGrowth factorSmooth muscle cell proliferationMuscle cell proliferationEarly postnatal deathInhibition of mTORAortic fibrosisAortic obstructionMedial thickeningAortic stiffeningNeonatal deathLuminal stenosisPharmacological blockadeAbsence of elastinThoracic aortaTherapeutic benefitJuvenile micePostnatal deathMTOR inhibitionAortaHeterozygous lossMice