Abstract:
:The authors investigated the time-dependent action of atorvastatin and simvastatin on oxidative stress and cytokine levels immediately after the start of treatment. These factors play a role in endothelial dysfunction. Hyperlipidemic patients (n = 132) were assigned to treatment with 40 mg atorvastatin, 40 mg simvastatin, or placebo. Blood samples were taken before, 2 hours, 24 hours, 7 days, and 3 weeks after the administration of the statin or placebo to evaluate serum concentrations of total peroxides (TP), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-alpha) and soluble intercellular vascular adhesion molecule 1 (sICAM 1). In the atorvastatin group the TP changes were significantly different at 2 hours and 24 hours (p = 0.005), whereas in the simvastatin group there was a gradual, more or less linear decline in TP until 7 days (p = 0.006) and then a plateau. Simvastatin exhibited a faster statistically significant decrease over time in IL-6 and sICAM 1 levels (at 7 days, p = 0.014 and p = 0.001, respectively). TNF-alpha demonstrated a faster linear trend in the simvastatin group, but the significant effect appeared late (p = 0.006). Both simvastatin and atorvastatin exerted early beneficial effects on oxidative stress, proinflammatory cytokines, and endothelial activation in hyperlipidemic subjects. These effects became significant 2 hours following the initiation of therapy.
journal_name
Angiologyjournal_title
Angiologyauthors
Marketou ME,Zacharis EA,Nikitovic D,Ganotakis ES,Parthenakis FI,Maliaraki N,Vardas PEdoi
10.1177/000331970605700212subject
Has Abstractpub_date
2006-03-01 00:00:00pages
211-8issue
2eissn
0003-3197issn
1940-1574journal_volume
57pub_type
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