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Abstract Title:

Effects of water garlic extracts on cell cycle and viability of HepG2 hepatoma cells.

Abstract Source:

J Nutr Biochem. 2006 Nov ;17(11):742-9. Epub 2006 Jan 24. PMID: 16520031

Abstract Author(s):

Angelo De Martino, Giuseppe Filomeni, Katia Aquilano, Maria R Ciriolo, Giuseppe Rotilio

Article Affiliation:

Department of Biology, University of Rome "Tor Vergata," Via della Ricerca Scientifica, 00133 Rome, Italy. demartino@bio.uniroma2.it

Abstract:

Garlic extracts, either aqueous or oily, are commonly employed to prepare garlic derivative supplements used as nutraceuticals for the treatment of different pathologies. In this study, we investigated the effects of water garlic extracts from two different areas of Italy well known for garlic production, Latina (GEL) and Sulmona (GES), on cell cycle and death of HepG2 hepatoma cells. The effects of the treatments with GEL and GES were also compared with the oil-soluble sulfur compound of garlic, diallyl disulfide (DADS). GEL and GES induced a p53/p21-dependent cell cycle arrest in G2/M phase and apoptosis, although to a different extent, whereas DADS, under the experimental conditions used, was not detrimental to HepG2 cells. GEL and GES committed HepG2 cells to apoptosis by the activation of c-Jun-NH(2) terminal kinase (JNK)/c-Jun phosphorylative cascade without a detectable increase in the flux of reactive oxygen species. Moreover, differentiation of HepG2 cells induced by retinoic acid determined resistance to GEL and GES treatments without the activation of JNK signaling pathway. Overall, the results obtained indicate that water-soluble garlic extracts are more inhibitory of the growth of transformed hepatoma cells than the oil-soluble isolated compound DADS, and that their antiproliferative properties are different depending on the area of origin of the starting material.

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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