Abstract
This study examined the effect of pinacidil, a nonselective adenosine triphosphate–sensitive potassium channel opener, on the function of osteoblastic MC3T3-E1 cells. Pinacidil caused a significant elevation of collagen synthesis, alkaline phosphatase activity, osteocalcin synthesis and mineralization in the cells (p < 0.05). Pinacidil significantly decreased the production of osteoclast differentiation inducing factors such as TNF-α, IL-6 and receptor activator of nuclear factor-κB ligand in the presence of antimycin A, which inhibits mitochondrial electron transport. Moreover, pinacidil prevented antimycin A-induced reactive oxygen species and nitrotyrosine production. These results demonstrate that pinacidil may have positive effects on skeletal structure.
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