Abstract
Functional characterization of new short glyproline peptides, which are able to provide a regulatory effect on the functional state of the hemostasis system, as well as lipid and carbohydrate metabolism in the body, is an actual task of physiology and medicine. In the present study, we used a model of experimental metabolic syndrome developed in animals due to continuous feeding with high-calorie food. This leads to increased clotting, glucose concentration, low-density lipoprotein cholesterol, triglycerides, and the level of total cholesterol in the blood, which is accompanied by an increase in the body weight of rats. Arginine-containing peptides (Arg-Glu-Arg-Pro-Gly-Pro, Arg-Glu-Arg-Val-Gly-Pro, Arg-Glu-Arg-Gly-Pro) were intranasally administered every 24 h to rats seven times 6 weeks after the development of metabolic syndrome. These peptides provided a unique combined effect on the body, restoring parameters of lipid metabolism, the hemostasis system, and the concentration of blood glucose to normal values. The corrective effect of the studied peptides was detected 20 h after the last administration and was maintained for 168 h even under further feeding of rats with high-calorie diet. The studied glyproline peptides belong to therapeutic normoglycemic and lipid-lowering drugs. They block the accumulation of new fat deposits in the body, and also have anticoagulant and antithrombotic effects in disorders of lipid metabolism. The Arg-Glu-Arg-Pro-Gly-Pro peptide possessed the most pronounced and stable positive effect on the body.
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Original Russian Text © L.A. Lyapina, M.E. Grigorjeva, T.Y. Obergan, N.F. Myasoedov, L.A. Andreeva, 2017, published in Vestnik Moskovskogo Universiteta, Seriya 16: Biologiya, 2017, Vol. 72, No. 2, pp. 92–98.
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Lyapina, L.A., Grigorjeva, M.E., Obergan, T.Y. et al. Correction of experimental metabolic syndrome manifestations in rats by some arginine-containing peptides. Moscow Univ. Biol.Sci. Bull. 72, 79–84 (2017). https://doi.org/10.3103/S0096392517020092
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DOI: https://doi.org/10.3103/S0096392517020092