Acta Veterinaria et Zootechnica Sinica ›› 2022, Vol. 53 ›› Issue (6): 1971-1979.doi: 10.11843/j.issn.0366-6964.2022.06.030

• CLINICAL VETERINARY MEDICINE • Previous Articles     Next Articles

Changes of AMPK, GLUT and Related Genes in Liver and Skeletal Muscle of Dairy Cows with Acute Laminitis Induced by Oligofructose

LI Yuepeng1,2, DING Jiafeng1,2, ZHANG Xianhao1,2, LI Shuaichen1,2, ZHANG Jiantao1,2, WANG Hongbin1,2*   

  1. 1. College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China;
    2. Key Laboratory of Animal Disease Control, College of General Higher Education, Heilongjiang Province, Harbin 150030, China
  • Received:2021-09-27 Online:2022-06-23 Published:2022-06-25

Abstract: In order to investigate the changes in energy metabolism during the course of acute laminitis in dairy cows, 12 healthy Chinese Holstein cows were used in this study, they were randomly devided into two groups (n=6): The experimental group (OF group) was treated with 17 g·kg-1 body weight of oligofructose dissolved in 2 L·100 kg-1 body weight of water, and the control group (CON group) was given the same amount of water, and 72 hours later cows were euthanized to collect liver and muscle tissues, and Western blot experiments and real-time fluorescent quantitative PCR experiments were performed to detect energy changes and glucose transport in the liver and muscle tissues. Indicators: glucose transporter 1 and 4 (GLUT-1, GLUT- 4), 5'-adenosine monophosphate-activated protein kinase, AMPK and related factors (PPAR-γ, PGC1-α, PEPCK). Results were as follows: In liver tissues, the expression of AMPK gene and AMPK protein of OF group increased significantly, but the ratio of P-AMPK/AMPK decreased extremely significantly, while the protein and gene of GLUT-1, PPAR-γ gene, PGC1α gene and PEPCK gene no significantly change in expression; in muscle tissue, the protein expression of AMPK gene and AMPK in the OF group did not change significantly, but the ratio of P-AMPK/AMPK decreased significantly, the expression of GLUT-4 gene and protein decreased significantly, and the expression levels of PPAR-γ and PEPCK genes increased significantly, but there was no significant change in the expression levels of PGC1-α genes. Acute laminitis in dairy cows may inhibition the energy metabolism and glucose transport ability of muscle tissue, but has little effect on the liver.

Key words: oligofructose, dairy acute laminitis, energy metabolism, glucose transport

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