2007
Insulin Sensitivity, Vascular Function, and Iron Stores in Voluntary Blood Donors
Zheng H, Patel M, Cable R, Young L, Katz SD. Insulin Sensitivity, Vascular Function, and Iron Stores in Voluntary Blood Donors. Diabetes Care 2007, 30: 2685-2689. PMID: 17630263, DOI: 10.2337/dc07-0748.Peer-Reviewed Original ResearchConceptsWhole-body insulin sensitivity indexFlow-mediated dilationOral glucose loadingVascular functionBlood donorsIron storesBlood donationBrachial arterySerum ferritinGlucose loadingInsulin sensitivityGlucose metabolismOral glucose tolerance testingProspective cross-sectional studyImproved vascular functionGlucose tolerance testingInsulin sensitivity indexVoluntary blood donorsCross-sectional studyHigh-frequency donorsCardiovascular riskAcute hyperglycemiaGlucose toleranceSerum markersTolerance testing
2003
Insulin resistance and the effects of thiazolidinediones on cardiac metabolism
Young LH. Insulin resistance and the effects of thiazolidinediones on cardiac metabolism. The American Journal Of Medicine 2003, 115: 75-80. PMID: 14678870, DOI: 10.1016/j.amjmed.2003.09.013.BooksConceptsMyocardial metabolismFree fatty acidsAdministration of thiazolidinedionesImproved glucose metabolismEffects of thiazolidinedionesInsulin-sensitizing effectsRecovery of functionCardiac contractile activityPotential beneficial effectsPostischemic periodDiabetes mellitusMyocardial injuryFFA metabolismInsulin resistanceFatty acid concentrationsContractile activityGlucose metabolismAnimal studiesCardiac metabolismPharmacologic manipulationThiazolidinedionesBeneficial effectsSkeletal muscleHigh rateMetabolism
1999
Effect of AMPK activation on muscle glucose metabolism in conscious rats
Bergeron R, Russell R, Young L, Ren J, Marcucci M, Lee A, Shulman G. Effect of AMPK activation on muscle glucose metabolism in conscious rats. American Journal Of Physiology 1999, 276: e938-e944. PMID: 10329989, DOI: 10.1152/ajpendo.1999.276.5.e938.Peer-Reviewed Original ResearchMeSH KeywordsAminoimidazole CarboxamideAMP-Activated Protein KinasesAndrostadienesAnimalsBiological TransportDeoxyglucoseElectric StimulationEnzyme ActivationEnzyme InhibitorsIn Vitro TechniquesInsulinMaleMultienzyme ComplexesMuscle ContractionMuscle, SkeletalPhosphatidylinositol 3-KinasesProtein Serine-Threonine KinasesRatsRats, Sprague-DawleyRibonucleotidesTritiumWortmanninConceptsMuscle glucose metabolismGlucose transport activityActivation of AMPKGlucose uptakeGlucose metabolismTransport activitySkeletal muscle glucose metabolismExercise-induced increaseSkeletal muscle glucose transport activityBasal rateAbsence of wortmanninAdenosine receptor antagonistAdditive effectProtein kinase activationVariable infusionConscious ratsReceptor antagonistSaline infusionAwake ratsMedial gastrocnemiusElectrical stimulationEpitrochlearis musclesCellular pathwaysAMPK activationKinase activation
1996
Glucose metabolism distal to a critical coronary stenosis in a canine model of low-flow myocardial ischemia.
McNulty PH, Sinusas AJ, Shi CQ, Dione D, Young LH, Cline GC, Shulman GI. Glucose metabolism distal to a critical coronary stenosis in a canine model of low-flow myocardial ischemia. Journal Of Clinical Investigation 1996, 98: 62-69. PMID: 8690805, PMCID: PMC507401, DOI: 10.1172/jci118778.Peer-Reviewed Original ResearchConceptsLow-flow ischemiaCoronary stenosisIschemic myocardiumIschemic regionLow-flow myocardial ischemiaCritical coronary stenosisExogenous glucoseOxidative substrateMyocardial ischemiaIntact dogsGlucose metabolismNonischemic regionsClinical observationsCanine modelGlucose utilizationIschemiaBiochemical measurementsMyocardial regionsRate of incorporationIntracellular metabolismTricarboxylic acid cycle fluxStenosisMyocardiumGlucoseGlucose-derived pyruvate
1995
Hyperinsulinemia inhibits myocardial protein degradation in patients with cardiovascular disease and insulin resistance.
McNulty P, Louard R, Deckelbaum L, Zaret B, Young L. Hyperinsulinemia inhibits myocardial protein degradation in patients with cardiovascular disease and insulin resistance. Circulation 1995, 92: 2151-6. PMID: 7554195, DOI: 10.1161/01.cir.92.8.2151.Peer-Reviewed Original ResearchConceptsMyocardial protein degradationInsulin infusionCardiovascular diseaseMyocardial protein synthesisInsulin resistancePhenylalanine balanceMyocardial hypertrophyWhole-body glucose metabolismCoronary artery diseaseIschemic heart diseasePlasma insulin concentrationNet phenylalanine balanceWhole-body carbohydrate metabolismEffect of insulinMyocardial protein metabolismArtery diseaseAcute hyperinsulinemiaProtein synthesisHeart diseaseInsulin concentrationsPlasma concentrationsAntiproteolytic actionHyperinsulinemiaGlucose metabolismConstant infusion