Abstract
Objective: To investigate the effect of Red Peony 801 (propyl gallate,PrG) on cyclooxygenase (COX) activity in murine peritoneal macrophages.Methods: A screening model for COX inhibitors in vitro based on murine peritoneal macrophages was used. COX-1 activity was reflected by the level of 6-ketoprostaglandin F1α(6-keto-PGF1α) in supernatants of cultured macrophages which were stimulated with calcium ionophore A23187 for a short-term, while COX-2 activity was reflected by the level of prostaglandin E2 (PGE2) in supernatants of cultured macrophages which were stimulated with lipopolysaccharide (LPS) for a long-term.Results: PrG did not affect A23187-induced, COX-1-derived 6-keto-PGF1α synthesis at the concentrations of 1 × 10-6, 5 × 10-6 mol/L (P>0.05), but enhanced 6-keto-PGF1α synthesis at the concentrations of 1 × 10-6, 5 × 10-7, 1 × 10-7 mol/L (P<0.01) in vitro, and showed a good dose-dependent manner. It inhibited LPS-induced, COX-2-derived PGE2 synthesis at the concentrations of 1 × 10-6, 1 × 10-6 mol/L (P< 0.05).Conclusion: Within the range of 1 × 10-5 to 1 × 10-7 mol/L, PrG activated COX-1 at lower concentrations and inhibited COX-2 at higher concentrations in murine peritoneal macrophages.
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This work is supported by the National Natural Science Foundation (item number: 90209054)
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Hui-jun, Y., Yue-rong, J., Xiao-hua, W. et al. Effect of propyl gallate on activity of cyclooxygenase 1 and 2 in mice’s peritoneal macrophages. Chin. J. Integr. Med. 10, 213–217 (2004). https://doi.org/10.1007/BF02836411
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DOI: https://doi.org/10.1007/BF02836411