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Abstract
Cinnamomum cambodianum has been used as a traditional medicine in Cambodia. Its effect on the bone marrow-derived mast cells (BMMCs) mediated allergic response remains unknown. In this study, a chloroform-soluble extract of C. cambodianum was evaluated for its effect on allergic mediators, including prostaglandin D2 (PGD2), leukotriene C4 (LTC4), β-hexosaminidase and cyclooxygenase-2 (COX-2) protein, in phorbol 12-myristate 13-acetate (PMA) plus calcimycin-stimulated BMMCs. The results revealed that the chloroform-soluble extract inhibited the production of interleukin-6, PGD2 and LTC4, and the expression of COX-2 in PMA plus calcimycin-stimulated BMMCs, implying a potential benefit of C. cambodianum in the treatment of allergy.