Abstract
Methyl gallate (MG) is a medicinal herbal product that is isolated fromPaeonia lactiflora that inhibits cyclooxygenase-2 (COX-2) dependent phases of prostaglandin D2 (PGD2) generation in bone marrow-derived mast cells (BMMC) in a concentration-dependent manner with an IC50 values of 17.0 μM. This compound also found inhibited the COX-2-dependent conversion of the exogenous arachidonic acid to PGD2 in a dose-dependent manner with an IC50 values of 19.0 μM, using a COX enzyme assay kit. However, at concentrations up to 80 μM, MG did not inhibit COX-2 protein expression in BMMC, indicating that MG inhibits COX-2 activity directly. Furthermore, MG consistently inhibited the production of leukotriene C4 (LTC4) in a dose dependent manner, with an IC50 value of 5.3 μM. These results demonstrate that MG has a dual cyclooxygenase-2/5-lipoxygenase inhibitory activity, which provide the basis for novel anti-inflammatory drugs.
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Se Jong Kim and Meihua Jin contributed equally to this work.
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Kim, S.J., Jin, M., Lee, E. et al. Effects of methyl gallate on arachidonic acid metabolizing enzymes: Cyclooxygenase-2 and 5-lipoxygenase in mouse bone marrow-derived mast cells. Arch Pharm Res 29, 874–878 (2006). https://doi.org/10.1007/BF02973908
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DOI: https://doi.org/10.1007/BF02973908