18 October 2017
Int J Med Sci 2015; 12(7):583-589. doi:10.7150/ijms.11839
Effects of Remifentanil Preconditioning on Osteoblasts under Hypoxia-Reoxygenation Condition
1. Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Gyeongnam, Korea
Background: Ischemia-reperfusion of bone occurs in a variety of clinical conditions, such as orthopedic arthroplasty, plastic gnathoplasty, spinal surgery, and amputation. Usually, cellular models of hypoxia-reoxygenation reflect in vivo models of ischemia-reperfusion. With respect to hypoxia-reoxygenation conditions, the effects of remifentanil on osteogenesis have received little attention. Therefore, we investigated the effects of remifentanil on the proliferation and differentiation of osteoblasts during hypoxic-reoxygenation.
Methods: After remifentanil (0.1, 1 ng/mL) preconditioning for 2 hours, human osteoblasts were cultured under 1% oxygen tension for 24 hours. Thereafter, the cells were reoxygenated for 12 hours at 37 °C. The naloxone groups were treated with naloxone for 30 minutes before remifentanil treatment. We measured cell viability via MTT assay. Osteoblast maturation was determined by assay of bone nodular mineralization. Quantitative PCR and western blot methods were used to determine BMP-2, osteocalcin, Akt, type I collagen, osterix, TGF-β1, HIF-1α, and RUNX2 expression levels.
Results: Osteoblast viability and bone nodular mineralization by osteoblasts is recovered by remifentanil preconditioning from hypoxia-reoxygenation insult. During hypoxic-reoxygenation condition, remifentanil preconditioning induced the expression of BMP-2, osteocalcin, Akt, type I collagen, osterix, TGF-β1, HIF-1α, and RUNX2 in osteoblasts.
Conclusions: Under hypoxia-reoxygenation conditions, remifentanil preconditioning enhanced the cell viability and maturation of osteoblasts, and stimulated the expression of proteins associated with osteoblast proliferation and differentiation of the osteoblast. Our results suggest that remifentanil may help in the treatment of bone stress injuries.
Keywords: remifentanil, hypoxia-reoxygenation, osteoblast
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How to cite this article:
Baik SW, Park BS, Kim YH, Kim YD, Kim CH, Yoon JY, Yoon JU. Effects of Remifentanil Preconditioning on Osteoblasts under Hypoxia-Reoxygenation Condition. Int J Med Sci 2015; 12(7):583-589. doi:10.7150/ijms.11839. Available from http://www.medsci.org/v12p0583.htm