ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (1): 195-202.doi: 10.11843/j.issn.0366-6964.2018.01.022

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The Effects of Macrophage Migration Inhibitory on Metabolism of Free-Fatty-Acid in Broiler Chicken Cardiocytes in Hypoxia

REN Hao1, LI Li-fang2, WANG Yan-mei3, HUANG Nan1, PEI Fang-ying1, LI Jia-wei1, SUN Yao-gui1, DUAN Zhi-bian1, LI Hong-quan1, WANG Wen-kui1*   

  1. 1. College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China;
    2. Department of Environmental Science and Food Engineering, College of Information, Shanxi Agricultural University, Taigu 030801, China;
    3. School of Biological Engineering, Binzhou University, Binzhou 256600, China
  • Received:2017-07-28 Online:2018-01-23 Published:2018-01-23

Abstract:

The aim of this study was to investigate the effects of macrophage migration inhibitory (MIF) on metabolism of Free-Fatty-Acid in broiler chicken cardiocytes in hypoxia. Firstly, chicken embryonic cardiomyocytes were isolated by trypsin and type Ⅱ collagenase, and cultured in DMEM, then identified by α-actinin immunocytochemistry. Secondly, hypoxia model of chicken cardiocyte induced by cobalt chloride was established, which was identified by the hypoxia sign protein, HIF-1α. Thirdly, the MIF blocker ISO-1 was used to test the relationship between MIF and p-AMPK. The expression levels of FAT/CD36, p-ACC and CPT-1A in cardiomyocytes were determined by western blot during hypoxia and normoxia. Results were as follows:The chicken cardiocytes, above 90% purity, showed spherical and polygon shape in vivo, and they beat spontaneously about 80-130 times per minute. HIF-1α expression reached the highest at 24 h with the 600 μmol·L-1 CoCl2. The p-AMPK levels decreased significantly (P<0.01) along with the MIF which was blocked by 100 μmol·L-1 ISO-1. The levels of MIF, p-AMPK, FAT/CD36, p-ACC and CPT-1A were all increased significantly (P<0.01) in the hypoxia group compared with the normal one, while the levels of the target proteins were all decreased significantly (P<0.01) in the inhibitor group compared with the hypoxia one. MIF, a myocardial autocrine factor, plays an important protective role in the fatty acid adapted metabolism of chicken cardiomyocytes during hypoxia by activating the AMPK signal pathway.

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