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- W2077261036 abstract "The etiology of vitiligo is still being debated, although neural factors seem to play a pivotal role in its pathogenesis. In our search for a link between vitiligo and the activity of monoaminergic systems, we used high-pressure liquid chromatography and electrochemical detector (HPLC-ED) methods to measure the plasma levels of the following substances in 35 healthy subjects and in 70 patients suffering from nonsegmental vitiligo at the different stages of the disease: catecholamines [norepinephrine (NE), epinephrine (E), and dopamine (DA)], their precursor 3,4-dihydroxyphenylalanine (DOPA), their metabolites [3-methoxy-4-hydroxyphenylglycol (MHPG), normetanephrine (NMN), metanephrine (MN), and homovanillic acid (HVA)], and 5-hydroxyindolacetic acid (5-HIAA) as the major metabolite of serotonin. We found that the levels of NE, E, NMN, MN, HVA, and 5-HIAA were significantly higher in patients compared to controls. The patients at an active phase of the disease (n = 49/70) showed significantly higher levels of NE, NMN, MHPG, and HVA than ones at a stable phase. The patients with progressive vitiligo and at its more recent onset (< 1 year) showed significantly increased levels of E, NE, and MN in comparison with longer-term sufferers. No significant differences were observed when the patients were subdivided according to the type of vitiligo or their age at its onset. The higher catecholamine and metabolite levels in the early phase of the disease may reflect increased activity by monoaminergic systems, probably due to stressful events, including the onset of vitiligo itself." @default.
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- W2077261036 date "2000-02-01" @default.
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- W2077261036 title "Higher Plasma Catecholamine and Metabolite Levels in the Early Phase of Nonsegmental Vitiligo" @default.
- W2077261036 doi "https://doi.org/10.1034/j.1600-0749.2000.130106.x" @default.
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