Abstract Title:

Optimized turmeric extracts have potent anti-amyloidogenic effects.

Abstract Source:

Curr Alzheimer Res. 2009 Dec;6(6):564-71. PMID: 19715544

Abstract Author(s):

R Douglas Shytle, Paula C Bickford, Kavon Rezai-zadeh, L Hou, Jin Zeng, Jun Tan, Paul R Sanberg, Cyndy D Sanberg, Bill Roschek, Ryan C Fink, Randall S Alberte

Article Affiliation:

Center for Excellence in Aging and Brain Repair, Department of Neurosurgery, University of South Florida College of Medicine, Tampa, FL 33612, USA.


Inhibition of beta-amyloid (A beta) accumulation and A beta fibril (fA beta) formation from A beta are attractive therapeutic targets for the treatment of Alzheimer's disease (AD). While previous studies have shown anti-amyloidogenic effects of curcumin in vitro and in vivo, no studies have examined optimized turmeric extracts enriched in curcuminoids or turmerones. Three standardized turmeric extracts, HSS-838, HSS-848, and HSS-888, were prepared with different chemical profiles to investigate their potential therapeutic benefits for AD. These extracts were fingerprinted by DART TOF-MS to reveal the significant chemical complexity. In addition four curcuminoids (curcumin, tetrahydrocurcumin, demethoxycurcumin and bisdemethoxycurcumin) were also examined. We measured the effects of the extracts and curcuminoids, on the aggregation of A beta by using a thioflavin T cell-free assay and the secretion of A beta from human neuronal cells (SweAPP N2A cells) in vitro. All three extracts and the curcuminoids showed dose-dependent inhibition of fA beta aggregation from A beta(1-42) in the cell-free assay, with IC(50) values of

Study Type : In Vitro Study

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