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Effect of insulin-like growth factor-1 (IGF-1) on the gluconeogenesis in calf hepatocytes cultured in vitro

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Abstract

The major role of insulin-like growth factor-1 (IGF-1) in the liver is to mediate glucose uptake in hepatocytes to synthesize glycogen and maintain blood glucose homeostasis. In this study, to evaluate the role of IGF-1 on gluconeogenesis and nutrient metabolism in dairy cattle, pyruvate carboxylase (PC) and phosphoenolpyruvate carboxykinase (PEPCK) expression and enzyme activity were evaluated in primary cultures of bovine hepatocytes treated with different concentrations of IGF-1 by quantitative polymerase chain reaction and spectrophotometry, respectively. The results showed that expression of PC and PEPCK were significantly lower in bovine hepatocytes by IGF-1 treatment in test group compare to the control group (P < 0.01). As IGF-1 concentration increased, PC and PEPCK enzyme activity in bovine hepatocytes decreased. Evaluating PC and PEPCK mRNA levels and enzyme activity may thus be useful to monitor subclinical ketosis in dairy cows.

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Acknowledgments

This work was supported by the National Key Basic Research Program of China (Grant No. 2011CB100800), by the National Natural Science Foundation of China (Grant Nos. 31072178, 30972212, and 30871897), by the Science Fund for Distinguished Young Scholars of Jilin University (Grant No. 201100009).

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Correspondence to Zhe Wang or Guowen Liu.

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Jianguo Wang, Xiaoyan Zhu and Chengzhen Chen contributed equally to this study.

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Wang, J., Zhu, X., Chen, C. et al. Effect of insulin-like growth factor-1 (IGF-1) on the gluconeogenesis in calf hepatocytes cultured in vitro. Mol Cell Biochem 362, 87–91 (2012). https://doi.org/10.1007/s11010-011-1130-9

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  • DOI: https://doi.org/10.1007/s11010-011-1130-9

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