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Eco/Toxicology

Effect of supplemented soybean (Glycine max L) diet and extracts on aluminum sulfate-induced genotoxicity

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Pages 965-986 | Received 28 Oct 2011, Accepted 30 Mar 2012, Published online: 18 May 2012
 

Abstract

Aim of this study is to evaluate the protective role of Glycine max L. (soybean) against aluminum sulfate-induced genotoxicity. A diet containing 30% soybean and extracts obtained with various organic solvents were administered orally to male white Swiss mice prior to intraperitoneal injection of Al2(SO4)3. Light microscopy was used for the examination of genotoxicity involving somatic cells, germ cells, and sperms. The main secondary metabolites contained in each extract were isolated and identified by chromatographic and spectral analyses. Administration of soy diet and extracts to the examined mice induced significant anti-mutagenic activity against bone marrow aberrations and spermatocyte and sperm abnormalities. At the end of this study, maximum protection was achieved using the methanolic extract (83% and 79%) followed by those obtained with chloroform (71% and 49%) and n-hexane (51% and 39%) for bone marrow aberrations and spermatocyte abnormalities, respectively. The observed activity of soybean extracts might be related to the main constituents isolated and identified. These main constituents were the isoflavone glycosides genistin and daidzin in addition to saponins (methanol extract), lignan matairesinol (chloroform extract), and β-sitosterol, unsaturated fatty acids as well as phospholipids (n-hexane extract). The results illustrated that soy extracts can be considered as alternative anti-mutagenic nutraceuticals and promising source for developing anti-mutagenic drugs.

Acknowledgments

Thanks and appreciations are due to Prof. Dr Mahmoud A. Nawar and Prof. Dr Samy M. Mohamed, NRC, for facilities and advice they provided concerning phytochemical study.

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