Waqas Ahmad,
Endang Kumolosasi 
,
Ibrahim Jantan,
Malina Jasamai,
Emil Salim
For correspondence:- Endang Kumolosasi Email: ekumolosasi@yahoo.co.id Tel:+60149208054
Received: 28 December 2012 Accepted: 26 December 2013 Published: 20 February 2014
Citation: Ahmad W, Kumolosasi E, Jantan I, Jasamai M, Salim E. Modulatory Effect of Phytoestrogens and Curcumin on Induction of Annexin 1 in Human Peripheral Blood Mononuclear Cells and their Inhibitory Effect on Secretory Phospholipase A2. Trop J Pharm Res 2014; 13(2):171-177 doi: 10.4314/tjpr.v13i2.1
© 2014 The authors.
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Purpose: To investigate the modulatory effects of phytoestrogens (coumestrol, daidzein and genistein) and curcumin on the induction and secretion of annexin-1 (ANXA-1) in human peripheral blood mononuclear cells (PBMCs) under inflammatory and non-inflammatory conditions, as well as their effect on the activity of phospholipase A2-V (sPLA2-V).
Methods: The modulatory effects of phytoestrogens and curcumin on the induction ofANXA1 were investigated via sandwich ELISA method, while their effects on the activity of sPLA2-V were determined by photometric assays. Besides, the cell viability of these compounds was determined by standard trypan blue exclusion method using PBMCs.
Results: The results indicate a significant increase (p < 0.05) in the total content ofANXA1, particularly by coumestrol (p < 0.01), in both inflammatory and non-inflammatory cells. Besides, the compounds also exhibited a dose-dependent inhibition of sPLA2-V activity; however, among these compounds, curcumin and genistein were the strongest inhibitors with an IC50 value of 11.1 ± 0.3 µM and13.6 ± 0.6 µM respectively.
Conclusion: The investigated compounds have a potential to induce synthesis and secretion ofANXA1 as well as inhibitory activity of sPLA2-V, suggesting their inhibitory role in phospholipid metabolism and inflammation.
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