Dose escalation of a curcuminoid formulation

BMC Complementary and Alternative Medicine - Tập 6 Số 1 - 2006
Christopher D. Lao1, Mack T. Ruffin2, Daniel P. Normolle3, Dennis D. Heath4, Sandra I. Murray1, Joanne Bailey1, Martha E. Boggs1, James A. Crowell5, Cheryl L. Rock6, Dean E. Brenner1
1Division of Hematology/Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, USA
2Department of Family Medicine, University of Michigan, Ann Arbor
3Biostatistics Core, Cancer Center, University of Michigan, Ann Arbor, USA
4Cancer Prevention and Control Program, University of California, La Jolla, USA
5Division of Cancer Prevention, National Cancer Institute, National Institute of Health, Bethesda, USA
6Department of Family and Preventive Medicine, University of California, La Jolla, USA

Tóm tắt

Abstract Background Curcumin is the major yellow pigment extracted from turmeric, a commonly-used spice in India and Southeast Asia that has broad anticarcinogenic and cancer chemopreventive potential. However, few systematic studies of curcumin's pharmacology and toxicology in humans have been performed. Methods A dose escalation study was conducted to determine the maximum tolerated dose and safety of a single dose of standardized powder extract, uniformly milled curcumin (C 3 Complex™, Sabinsa Corporation). Healthy volunteers were administered escalating doses from 500 to 12,000 mg. Results Seven of twenty-four subjects (30%) experienced only minimal toxicity that did not appear to be dose-related. No curcumin was detected in the serum of subjects administered 500, 1,000, 2,000, 4,000, 6,000 or 8,000 mg. Low levels of curcumin were detected in two subjects administered 10,000 or 12,000 mg. Conclusion The tolerance of curcumin in high single oral doses appears to be excellent. Given that achieving systemic bioavailability of curcumin or its metabolites may not be essential for colorectal cancer chemoprevention, these findings warrant further investigation for its utility as a long-term chemopreventive agent.

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BMC Complementary and Alternative Medicine

Tập 6 Số 1

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