Endothelium, VascularBrachial ArteryVasodilationVasodilator AgentsHyperemiaForearmNitroglycerinAcetylcholineNitric OxideRegional Blood FlowNitric Oxide Synthase Type IIINitroprussidePlethysmographyBlood Flow VelocityCross-Over StudiesOxidative StressBlood PressureEndothelial CellsJuglansCoronary VesselsVasomotor Systemomega-N-MethylarginineAtherosclerosisDouble-Blind MethodHypercholesterolemiaAortaArginineCardiovascular DiseasesEndotheliumSuperoxidesBiological MarkersEndothelium-Dependent Relaxing FactorsManometryBiopterinLaser-Doppler FlowmetryNitric Oxide SynthaseHypertensionLipidsHydroxymethylglutaryl-CoA Reductase InhibitorsCoronary Artery DiseaseHomocysteineC-Reactive ProteinVasoconstrictor AgentsMicrocirculationPostprandial PeriodDiabetes Mellitus, Type 2Vascular DiseasesVasoconstrictionArteriesEndothelin-1AntioxidantsVascular ResistanceDose-Response Relationship, DrugAscorbic AcidHeptanoic AcidsRisk FactorsCarotid ArteriesVascular StiffnessTime FactorsCoronary CirculationAorta, ThoracicDiabetic AngiopathiesRadial ArteryHyperhomocysteinemiaAnticholesteremic AgentsCholesterol, LDLInfusions, Intra-ArterialEnzyme InhibitorsReference ValuesPhotoplethysmographyArteriosclerosisBlood CirculationPyrrolesBlood GlucoseMyographyNADPH OxidaseComplianceTunica MediaBradykininCholesterolVascular Cell Adhesion Molecule-1Mesenteric ArteriesSteam BathHypoglycemic AgentsInflammationIontophoresisSimvastatinTunica IntimaAnalysis of VarianceAngiotensin-Converting Enzyme InhibitorsHeart RateBlood VesselsCase-Control StudiesTetrahydrofolatesAdministration, SublingualPulse Wave AnalysisCacaoNG-Nitroarginine Methyl EsterDisease Models, AnimalDiagnostic Techniques, Cardiovascular