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Exp Toxicol Pathol. 2009 Jul;61(4):333-7. doi: 10.1016/j.etp.2008.07.005. Epub 2008 Nov 5.

Anzer honey prevents N-ethylmaleimide-induced liver damage in rats.

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Department of Biology, Faculty of Science, Hacettepe University, Beytepe Campus, Ankara, Turkey.


N-ethylmaleimide (NEM) is a sulphydryl blocker which impairs the sulphydryl dependent antioxidant system (mainly glutathione) in the body by alkylating endogenous sulphydryls. This study was designed to investigate the effects of Anzer honey on NEM-induced liver injury in rats. Thirty female Wistar albino rats were divided equally into three groups. Group 1: control; Group 2: NEM; Group 3: Anzer honey+NEM. NEM (0.075mg kg(-1)) was given to both group 2 and 3 administered subcutaneously (s.c.) for 30 days. The animals in the Anzer honey+NEM group were treated with Anzer honey at a dose of 0.275g kg(-1), (p.o.) at 1h prior to every NEM injection. At the end of the 30 day treatment period, liver samples were taken for determination of the glutathione levels and histological examination. NEM treatment alone caused a significant reduction of the liver glutathione levels in group 2. Furthermore, NEM treatment caused congestion and mononuclear cell infiltration in the liver when compared to the control group. In group 3, Anzer honey treatment reversed all the changes in glutathione level, as well as histopathological alterations, normally induced by NEM. The findings imply that depletion of glutathione concentration plays a causal role in NEM-induced liver injury, and that the hepatoprotective effect of Anzer honey may be mediated through sulfhydryl-sensitive processes. They further imply that it may also possess antioxidant properties.

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