Ukr.Biochem.J. 2013; Volume 85, Issue 5, Sep-Oct, pp. 88-96


The effect of N-stearoylethanolamine on the activity of antioxidant enzymes, content of lipid peroxidation products and nitric oxide in the blood plasma and liver of rats with induced insulin-resistance

O. V. Onopchenko, G. V. Kosiakova, T. M. Goridko,
A. G. Berdyschev, O. F. Meged, N. M. Hula

Palladin Institute of Biochemistry, National Academy of Science of Ukraine, Kyiv;

The influence of N-stearoylethanolamine (NSE) on the content of lipid peroxidation products­, activity of antioxidant enzymes and the nitric oxide level in the liver and blood plasma of rats with insulin-resistance(IR) state was investigated. IR state was induced in rats by prolonged high-fat diet (58% of energy derived from fat) for 6 months combined with one injection of streptozotocin (15 mg/kg of body weight). The existence of IR state was estimated by results of glucosotolerance test and blood plasma insulin content.  The level of lipid peroxides products was shown to be higher in the liver of insulin resistant animals as a result of reduced superoxide dismutase and catalase activity, however, glutathione peroxidase activity was increased. The increase of nitric-oxide content in the liver and blood plasma of high-fat diet rats compared with healthy control animals was also observed. The administration of the NSE suspension per os in a dose of 50 mg/kg during 2 weeks to the rats with induced insulin-resistance state contributed to the increase of superoxide dismutase, catalase and glutathione peroxidase activi­ty. In consequence of antioxidant enzymes activation the intensity of POL process was decreased. The NSE administration caused normalization of nitric oxide level, restoring pro-/antioxidant balan­ce in the liver and blood plasma of rats with IR state.
In conclusion, the NSE administration to the rats with insulin-resistance state restored pro-/antioxidant balance and enhanced the content of nitric oxide, therefore, improving insulin sensitivity.

Keywords: , , ,


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