Gisela Reifenberg

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OBJECTIVE To find out whether dexamethasone induces an uncoupling of the endothelial nitric oxide synthase (eNOS). METHODS & RESULTS A major cause of eNOS uncoupling is a deficiency of its cofactor tetrahydrobiopterin (BH4). Treatment of human EA.hy 926 endothelial cells with dexamethasone decreased mRNA and protein expression of both BH4-synthesizing(More)
Artichoke (Cynara scolymus L.) is one of the world's oldest medicinal plants with multiple health benefits. We have previously shown that artichoke leaf extracts and artichoke flavonoids upregulate the gene expression of endothelial-type nitric oxide synthase (eNOS) in human endothelial cells. Whereas NO produced by the eNOS is a vasoprotective molecule, NO(More)
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