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http://dx.doi.org/10.11002/kjfp.2017.24.1.107

Protective effect of silk protein hydrolysates against tert-BHP induced liver damage  

Kim, Joo Hyoun (Department of Food Science and Technology, Seoul Women's University)
Suh, Hyung Joo (Department of Food and Nutrition, Korea University)
Choi, Hyeon-Son (Department of Food Science and Technology, Seoul Women's University)
Publication Information
Food Science and Preservation / v.24, no.1, 2017 , pp. 107-115 More about this Journal
Abstract
The aim of this study was to investigate the hepatoprotecive effect of silk protein hydrolysates (SDH), which was prepared by acid hydrolysis, in rats. SDH itself did not exhibit any cytotoxic effect on hepatic tissues. SDH showed a protective effect on tert-butyl hydroperoxide (t-BHP)-induced hepatotoxicity and liver damage. SDH effectively reduced AST (aspartate aminotransferase) and ALT (alanine aminotransferase), which are biomarkers for liver damage, in a dose-dependent manner. Malondialdehyde (MDA), a lipid peroxidation product, was significantly reduced by SDH. A high dose of SDH (2 g/kg) reduced t-BHP-induced MDA production by 40%. Glutathione (GSH), which is an endogenous antioxidant molecule, was effectively increased by SDH treatment. GSH content was enhanced by around 2.5-fold, compared with t-BHP control, upon SDH (2 g/kg) treatment. Lactate dehydrogenase (LDH), which is an enzyme released by cell cytotoxicity, was greatly increased by t-BHP, but significantly decreased by SDH treatment. Furthermore, hematoxylin and eosin (H&E) staining showed that SDH suppressed t-BHP-induced lesions in liver tissue. Taken together, SDH might be used as a protective agent against liver damage.
Keywords
silk proteins; hepatoprotective effect; liver damage; tert-butyl hydroperoxide;
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Times Cited By KSCI : 3  (Citation Analysis)
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