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Prev Med. 2012 May;54 Suppl:S57-63. doi: 10.1016/j.ypmed.2011.12.018. Epub 2011 Dec 28.

Isoflavones as a smart curer for non-alcoholic fatty liver disease and pathological adiposity via ChREBP and Wnt signaling.

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1
Adult Stem Cell Research Center, College of Veterinary Medicine, Seoul National University, 599 Gwanakno, Sillim-dong, Gwanak-gu, Seoul 151-742, Republic of Korea.

Abstract

OBJECTIVE:

Non-alcoholic fatty liver disease (NAFLD) and pathological adiposity has emerged as an important modern disease. Along with this, the requirement for alternative and natural medicine for preventing NAFLD and adiposity has been increasing rapidly and considerably. In this report, we will review the biological effect and mechanisms of soy isoflavones on NAFLD and pathologic adiposity mainly through the novel pathways, de novo lipogenic carbohydrate responsive element binding protein (ChREBP) and anti-adipogenic Wnt signaling.

METHODS:

This paper reviews in vitro and in vivo isoflavone studies published in 2002 to 2011 in North America and East Asia.

RESULTS:

Collectively, the data support a beneficial relation of isoflavones and NAFLD and/or adiposity. Isoflavones suppress ChREBP signaling via protein kinase A (PKA) and/or 5'-AMP activated protein kinase (AMPK)-dependent phosphorylation, which prevents ChREBP from binding to the promoter regions of lipogenic enzyme. Furthermore, isoflavones directly stimulate Wnt signaling via estrogen receptors-dependent pathway, which inactivates glycogen synthase kinase-3 beta (GSK-3β), transactivate T-cell factor/lymphoid-enhancer factor (TCF/LEF), the effector of Wnt signaling, degrade adipogenic peroxisome proliferator-activated receptor γ (PPARγ), augment p300/CBP, the transcriptional co-activators of TCF/LEF.

CONCLUSIONS:

Natural compound isoflavones may be useful alternative medicines in preventing NAFLD and pathological adiposity and this action may be partially associated with ChREBP and Wnt signaling.

PMID:
22227283
DOI:
10.1016/j.ypmed.2011.12.018
[Indexed for MEDLINE]

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