Alpha-ketoglutarate partially alleviates effects of high-fat high-fructose diet in mouse muscle (original) (raw)

Authors

Myroslava V. Vatashchuk Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine https://orcid.org/0000-0001-5732-2586
Maria M. Bayliak Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine; E-mail: maria.bayliak@pnu.edu.ua https://orcid.org/0000-0001-6268-8910
Viktoriia V. Hurza Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine https://orcid.org/0000-0001-9246-2656
Oleh I. Demianchuk Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine https://orcid.org/0000-0002-4730-0807
Dmytro V. Gospodaryov Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine https://orcid.org/0000-0001-8387-339X
Volodymyr I. Lushchak Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine; E-mail: volodymyr.lushchak@pnu.edu.ua https://orcid.org/0000-0001-5602-3330

DOI:

https://doi.org/10.17179/excli2023-6608

Keywords:

high-fat high-fructose diet, mouse, energy metabolism, glycolysis, lipotoxicity

Abstract

Consumption of high-calorie diets leads to excessive accumulation of storage lipids in adipose tissue. Metabolic changes occur not only in adipose tissue but in other tissues, too, such as liver, heart, muscle, and brain. This study aimed to explore the effects of high-fat high-fructose diet (HFFD) alone and in the combination with alpha-ketoglutarate (AKG), a well-known cellular metabolite, on energy metabolism in the skeletal muscle of C57BL/6J mice. Five-month-old male mice were divided into four groups – the control one fed a standard diet (10 % kcal fat), HFFD group fed a high-fat high-fructose diet (45 % kcal fat, 15 % kcal fructose), AKG group fed a standard diet with 1 % sodium AKG in drinking water, and HFFD + AKG group fed HFFD and water with 1 % sodium AKG. The dietary regimens lasted 8 weeks. Mice fed HFFD had higher levels of storage triacylglycerides, lower levels of glycogen, and total water-soluble protein, and higher activities of key glycolytic enzymes, namely hexokinase, phosphofructokinase, and pyruvate kinase, as compared with the control group. The results suggest that muscles of HFFD mice may suffer from lipotoxicity. In HFFD + AKG mice, levels of the metabolites and activities of glycolytic enzymes did not differ from the respective values in the control group, except for the activity of pyruvate kinase, which was significantly lower in HFFD + AKG group compared with the control. Thus, metabolic changes in mouse skeletal muscles, caused by HFFD, were alleviated by AKG, indicating a protective role of AKG regarding lipotoxicity.

How to Cite

Vatashchuk, M. V., Bayliak, M. M., Hurza, V. V., Demianchuk, O. I., Gospodaryov, D. V., & Lushchak, V. I. (2023). Alpha-ketoglutarate partially alleviates effects of high-fat high-fructose diet in mouse muscle. EXCLI Journal, 22, 1264–1277. https://doi.org/10.17179/excli2023-6608

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