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Columbin is a diterpenoid furanolactone isolated from J. columba, A. albida, and T. bakis that has diverse biological activities.1,2,3,4 It inhibits the growth of T. brucei in vitro and induces complete parasite clearance in T. brucei-infected mice when administered at a dose of 25 mg/kg per day for three days.1 Columbin selectively inhibits COX-2 over COX-1 (EC50s = 53.1 and 327 μM, respectively) and reduces carrageenan-induced paw edema in rats in a dose-dependent manner.2 Dietary feeding of columbin (4, 20, and 100 ppm) reduces the number of lesions in a rat model of azoxymethane-induced colon carcinogenesis.3 Columbin (20-40 mg/kg per day) also reduces sleeping time induced by a mixture of urethane and α-choralose but prolongs sleeping time induced by hexobarbital in mice.4
WARNING This product is not for human or veterinary use.
1. Columbin inhibits cholesterol uptake in bloodstream forms of Trypanosoma brucei-
2. In vitro and in vivo anti-
3. A bitter diterpenoid furanolactone columbin from Calumbae Radix inhibits azoxymethane-
4. Columbin isolated from calumbae radix affects the sleeping time of anesthetized mice. Biol. Pharm. Bull. 18(4), 634-636 (1995).