Olsalazine Sodium (Synonyms: C.I. 14130)

Olsalazine Disodium is an anti-inflammatory drug used in the treatment of Inflammatory Bowel Disease and Ulcerative Colitis.Target: AntibacterialOlsalazine Disodium is a derivative of salicylic acid. Inactive by itself (it is a prodrug), it is converted by the bacteria in the colon to mesalamine. Olsalazine Disodium is potent inhibitors of human intestinal macrophages chemotaxis to LTB4 with IC50 of 0.39 mM. Olsalazine Disodium (0.4 mM) inhibits the superoxide radical production generated by phorbol myristate acetate (PMA)-activated neutrophils or by xanthine-xanthine oxidase reaction by reduction of 31% and 73%, respectively. Olsalazine Disodium inhibits tumor growth in a rodent model of colorectal cancer. In 1,2-dimethylhydrazine-treated rats, Olsalazine (25 mg/kg/day) decreases number and volume of tumors by 58.17% and 62.67%, respectively. Administration of Olsalazine (Disodium) induces a 1.7-fold times increase in the number of apoptotic cells, companied with a reduction of 42.4% in cell proliferation rate.

References:
[1]. Nielsen, O.H., H.W. Verspaget, and J. Elmgreen, Inhibition of intestinal macrophage chemotaxis to leukotriene B4 by sulphasalazine, olsalazine, and 5-aminosalicylic acid. Aliment Pharmacol Ther, 1988. 2(3): p. 203-11.
[2]. Gionchetti, P., et al., Scavenger effect of sulfasalazine, 5-aminosalicylic acid, and olsalazine on superoxide radical generation. Dig Dis Sci, 1991. 36(2): p. 174-8.
[3]. Brown, W.A., et al., 5-aminosalicyclic acid and olsalazine inhibit tumor growth in a rodent model of colorectal cancer. Dig Dis Sci, 2000. 45(8): p. 1578-84.