Antidiabetic activities of triterpenoids isolated from bitter melon associated with activation of the AMPK pathway - PubMed (original) (raw)
doi: 10.1016/j.chembiol.2008.01.013.
Ji-Ming Ye, Nigel Turner, Cordula Hohnen-Behrens, Chang-Qiang Ke, Chun-Ping Tang, Tong Chen, Hans-Christoph Weiss, Ernst-Rudolf Gesing, Alex Rowland, David E James, Yang Ye
Affiliations
- PMID: 18355726
- DOI: 10.1016/j.chembiol.2008.01.013
Antidiabetic activities of triterpenoids isolated from bitter melon associated with activation of the AMPK pathway
Min-Jia Tan et al. Chem Biol. 2008 Mar.
Erratum in
- Chem Biol. 2008 May;15(5):520
Abstract
Four cucurbitane glycosides, momordicosides Q, R, S, and T, and stereochemistry-established karaviloside XI, were isolated from the vegetable bitter melon (Momordica charantia). These compounds and their aglycones exhibited a number of biologic effects beneficial to diabetes and obesity. In both L6 myotubes and 3T3-L1 adipocytes, they stimulated GLUT4 translocation to the cell membrane--an essential step for inducible glucose entry into cells. This was associated with increased activity of AMP-activated protein kinase (AMPK), a key pathway mediating glucose uptake and fatty acid oxidation. Furthermore, momordicoside(s) enhanced fatty acid oxidation and glucose disposal during glucose tolerance tests in both insulin-sensitive and insulin-resistant mice. These findings indicate that cucurbitane triterpenoids, the characteristic constituents of M. charantia, may provide leads as a class of therapeutics for diabetes and obesity.
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