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Effects of Selenium in the MAPK Signaling Cascade
Nadereh Rashtchizadeh1, Pouran Karimi2, Parvin Dehgan3
1Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Introduction:
This study aimed to discover by which mechanism selenium (Se) suppresses stimulated platelets stimulation in oxidative stress underlying diseases.
Methods:
Human platelets pretreated with Se and stimulated by Cu(2+)-oxidized low density of lipoprotein (OxLDL) or thrombin before assessment of P-selectin and phosphorylated p38 mitogen-activated protein kinase (p-p38MAPK), phosphorylated Jun N-terminal kinase (p- JNK), and phosphorylated extracellular signal-regulated kinases (p-ERK1/2). All variables were measured by solid phase sandwich enzyme-linked immunosorbent assay (ELISA).
Results:
Se significantly decreased Cu(2+)-OxLDL induced P-selectin expression, as well as p38 and JNK phosphorylation in platelets, but could not significantly reduce ERK1/2 phosphorylation.
Conclusion:
Se suppresses inflamed platelets. This effect maybe partly mediated by the p38 or c-JNK signaling pathways. These results create possibility of new co-anti-inflammatory insight for Se in atherosclerosis.
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