0000000000067368

AUTHOR

Mathias Oelze

showing 3 related works from this author

Effects of Long-Term Nitroglycerin Treatment on Endothelial Nitric Oxide Synthase (NOS III) Gene Expression, NOS III–Mediated Superoxide Production, …

2000

Abstract —Long-term nitroglycerin (NTG) treatment has been shown to be associated with cross-tolerance to endothelium-dependent vasodilators. It may involve increased production of reactive oxygen species (such as superoxide, O 2 ·− ) that rapidly inactivate the nitric oxide (NO) released from the endothelial cells. It remains to be elucidated, however, whether long-term treatment with NTG alters the activity and expression of the endothelial NO synthase (NOS III) and whether this enzyme can contribute to O 2 ·− formation. We studied the influence of long-term NTG treatment on the expression of NOS III as assessed by RNase protection assay and Western blot. Tolerance was measured ex vivo i…

medicine.medical_specialtyIndolesNitric Oxide Synthase Type IIIPhysiologyCarbazolesBiological AvailabilityVasodilationArginineNitric OxideGene Expression Regulation EnzymologicTimeNitric oxideNitroglycerinchemistry.chemical_compoundAlkaloidsSuperoxidesInternal medicinemedicineAnimalsRNA MessengerLucigeninCloning MolecularEnzyme InhibitorsRats WistarCalcimycinProtein Kinase CProtein kinase CBenzophenanthridineschemistry.chemical_classificationReactive oxygen speciesSuperoxideAcetylcholinePhenanthridinesRatsVasodilationEndocrinologychemistryBiochemistryEndothelium VascularNitric Oxide SynthaseCardiology and Cardiovascular MedicineEx vivoAcetylcholinemedicine.drugCirculation Research
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Reversal of Endothelial Nitric Oxide Synthase Uncoupling and Up-Regulation of Endothelial Nitric Oxide Synthase Expression Lowers Blood Pressure in H…

2006

Objectives We sought to examine the hypothesis that a pharmacologic up-regulation of endothelial nitric oxide synthase (eNOS) combined with a reversal of eNOS uncoupling provides a protective effect against cardiovascular disease. Background Many cardiovascular diseases are associated with oxidant stress involving protein kinase C (PKC) and uncoupling of eNOS. Methods Messenger ribonucleic acid (mRNA) expression was analyzed with RNase protection assay or quantitative real-time polymerase chain reaction, vascular nitric oxide (NO) with spin trapping, and reactive oxygen species (ROS) with dihydroethidium fluorescence. Results Aortas of spontaneously hypertensive rats (SHR) showed an elevate…

Malemedicine.medical_specialtyEndotheliumRats Inbred WKYNitric oxidechemistry.chemical_compoundEnosInternal medicineRats Inbred SHRMedicineAnimalsMidostaurinEnzyme InhibitorsProtein Kinase Cbiologybusiness.industryNOX4biology.organism_classificationStaurosporineRatsUp-RegulationNitric oxide synthaseEndocrinologymedicine.anatomical_structurechemistryHypertensionbiology.proteincardiovascular systemP22phoxEndothelium VascularNitric Oxide SynthasebusinessCardiology and Cardiovascular MedicineNicotinamide adenine dinucleotide phosphateJournal of the American College of Cardiology
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Effects of a nitrate-free interval on tolerance, vasoconstrictor sensitivity and vascular superoxide production

2000

Abstract OBJECTIVES In the present study, we tested whether a nitrate-free interval is able to prevent increases in vascular superoxide (O2•−) and the development of hypersensitivity to vasoconstrictors and whether this may result in restoration of vascular nitroglycerin (NTG) sensitivity. BACKGROUND Intermittent NTG-patch treatment (12 h patch on/patch off) has been shown to increase ischemic periods in patients with stable coronary arteries, suggesting a rebound-like situation during the patch-off period. Recently, we demonstrated that long-term treatment with NTG induces tolerance, which was in part related to increases in vascular O2•− and increased vasoconstrictor sensitivity. METHODS …

Malemedicine.medical_specialtyTime Factorsgenetic structuresVasodilator AgentsBlotting WesternVasodilationIn Vitro TechniquesSuperoxide dismutaseNitroglycerinchemistry.chemical_compoundDrug toleranceInternal medicinemedicineAnimalsEndothelial dysfunctionPhenylephrinebiologySuperoxide DismutaseSuperoxidebusiness.industryDrug Tolerancemedicine.diseaseAngiotensin IIAcetylcholineeye diseasesOxidative StressEndocrinologychemistryVasoconstrictionbiology.proteinFemaleEndothelium VascularRabbitsmedicine.symptombusinessCardiology and Cardiovascular MedicineVasoconstrictionmedicine.drugJournal of the American College of Cardiology
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