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Matches in SemOpenAlex for { <https://semopenalex.org/work/W2007509939> ?p ?o ?g. }

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• W2007509939 abstract "Regulated uptake of extracellular l-arginine by cationic amino acid transporters (CATs) is required for inducible nitric oxide synthase and arginase activity. Both enzymes were recently recognized as important in the pathophysiology of psoriasis because of their contribution to epidermal hyperproliferation. We here characterize the expression pattern of CATs in psoriatic skin compared to healthy skin. CAT-1 mRNA expression was strongly upregulated in lesional and nonlesional areas of psoriatic skin compared to healthy skin, whereas expression of CAT-2A and the inducible isoform CAT-2B was unaltered in psoriatic skin. Furthermore, we tested the hypothesis that arginase-1 overexpression regulates CAT expression via intracellular l-arginine concentration. In in vitro experiments with arginase-1 overexpressing HaCaT cells, CAT-1 mRNA expression was increased. Likewise, this occurs in l-arginine-starved HaCaT cells. Both CAT-2 isoforms were not affected. Arginase-1 overexpression limits the synthesis of NO at physiological, but not supraphysiological, l-arginine levels. Plasma l-arginine concentration was diminished in psoriasis patients and the arginase product l-ornithine was significantly increased compared to healthy controls. In summary, arginase-1 overexpression leads to upregulated CAT-1 expression in psoriatic skin, which is due to lowered intracellular l-arginine levels and limits NO synthesis at physiological l-arginine concentrations." @default.
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• W2007509939 date "2005-04-01" @default.
• W2007509939 modified "2023-10-18" @default.
• W2007509939 title "Arginase-1 overexpression induces cationic amino acid transporter-1 in psoriasis" @default.
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• W2007509939 doi "https://doi.org/10.1016/j.freeradbiomed.2005.01.005" @default.
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