Parecoxib, a non?steroidal anti?inflammatory drug, has been reported to possess protective effects against sepsis. However, its detailed role and underlying mechanisms in septic cardiomyopathy remain unclear. Therefore, the goal of the present study was to clarify the function and to investigate the mechanisms of parecoxib in lipopolysaccharide (LPS)?treated H9c2 rat cardiomyocytes. TNF?α, IL?1β and IL?6 expression levels in parecoxib?treated H9c2 cells stimulated with LPS were assessed using ELISA. Parecoxib?treated H9c2 cells stimulated with LPS were tested for viability using the Cell Counting Kit?8 assay. Western blotting analysis and 5?ethynyl?2'?deoxyuridine were used to evaluate cell proliferation. Apoptosis was assessed using TUNEL and western blotting. To assess the protein expression of the MAPK signaling pathway, western blotting was performed. The data showed that parecoxib significantly and dose?dependently reduced the inflammatory responses of LPS?treated H9c2 cells. Parecoxib also significantly and dose?dependently increased the proliferation and inhibited the apoptosis of LPS?treated H9c2 cells. In addition, parecoxib significantly suppressed the activation of the MAPK (p38, JNK and ERK) signaling pathway. The current study indicated that parecoxib could be a viable therapeutic option for septic cardiomyopathy.
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