Diabetes & Metabolism Journal

Original Article

Basic Research
Carnitine Orotate Complex Ameliorates Insulin Resistance and Hepatic Steatosis Through Carnitine Acetyltransferase Pathway: Jung-Hee Hong, Moon-Kyu Lee; Diabetes Metab J. 2021;45(6):933-947. Published online August 19, 2021; DOI: https://doi.org/10.4093/dmj.2020.0223

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Background
Carnitine orotate complex (Godex) has been shown to decrease glycated hemoglobin levels and improve steatosis in patients with type 2 diabetes mellitus with non-alcoholic fatty liver disease. However, the mechanisms of Godex in glucose metabolism remain unclear.
Methods
Male C57BL/6J mice were divided into four groups: normal-fat diet, high-fat diet, a high-fat diet supplemented with intraperitoneal injection of (500 mg or 2,000 mg/kg/day) Godex for 8 weeks. Computed tomography, indirect calorimetry, and histological analyses including electron microscopy of the liver were performed, and biochemical profiles and oral glucose tolerance test and insulin tolerance test were undertaken. Expressions of genes in the lipid and glucose metabolism, activities of oxidative phosphorylation enzymes, carnitine acetyltransferase, pyruvate dehydrogenase, and acetyl-coenzyme A (CoA)/CoA ratio were evaluated.
Results
Godex improved insulin sensitivity and significantly decreased fasting plasma glucose, homeostatic model assessment for insulin resistance, steatosis, and gluconeogenesis, with a marked increase in fatty acid oxidation as well as better use of glucose in high-fat diet-fed mice. It preserved mitochondrial function and ultrastructure, restored oxidative phosphorylation enzyme activities, decreased acetyl-CoA/CoA ratio, and increased carnitine acetyltransferase content and pyruvate dehydrogenase activity. Carnitine acetyltransferase knockdown partially reversed the effects of Godex in liver and in vitro.
Conclusion
Godex improved insulin resistance and steatosis by regulating carnitine acetyltransferase in liver in high-fat diet-fed mice.

Citations

Citations to this article as recorded by

Impact of l-Carnitine Supplementation on Liver Enzyme Normalization in Patients with Chronic Liver Disease: A Meta-Analysis of Randomized Trials
Hyunwoo Oh, Chan Hyuk Park, Dae Won Jun
Journal of Personalized Medicine.2022; 12(7): 1053. CrossRef
Prolonged Use of Carnitine-Orotate Complex (Godex®) Is Associated with Improved Mortality: A Nationwide Cohort Study
Kye-Yeung Park, Sangmo Hong, Kyung-Soo Kim, Kyungdo Han, Cheol-Young Park
Journal of Personalized Medicine.2022; 12(12): 1970. CrossRef
The Role of Carnitine Orotate Complex in Fatty Liver
Hyon-Seung Yi
Diabetes & Metabolism Journal.2021; 45(6): 866. CrossRef

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