Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (5): 801-808.DOI: 10.3969/j.issn.1004-1524.2021.05.04

• Animal Science • Previous Articles     Next Articles

Effects of high protein diets on serum uric acid levels, liver and kidney ultrastructure and expression of ABCG2 in goslings

WANG Zhi(), HU Zhonghao, GUI Xueer, FENG Shibin, LI Yu, WANG Xichun, LI Jinchun, WU Jinjie*()   

  1. College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
  • Received:2020-07-10 Online:2021-05-25 Published:2021-05-25
  • Contact: WU Jinjie

Abstract:

In this study, the hyperuricemia model of gosling was established to study the effects of high protein diets on serum uric acid level, ultrastructure of liver and kidney and expression of ABCG2 in goslings.Transmission electron microscopy showed that the organelles structure of gosling liver and kidney in the control group (CP) was complete, whereas, some mitochondria of liver in high protein group 1 (HP1) and high protein group 2 (HP2) appeared to be swollen and showed vacuole degeneration, the endoplasmic reticulum was dilated, and glycogen levels were decreased. Some mitochondria of kidney cells appeared to be swollen, showed vacuole degeneration, and the nuclear membrane space increased. At 7 days of age, the serum uric acid levels in HP2 group were significantly higher than those of CP and HP1 groups (P<0.01). At 14 days of age, the serum uric acid level in HP2 group was significantly higher than those of CP and HP1 groups (P<0.01), and the serum uric acid level in HP1 group was significantly higher than those of CP group (P<0.01).The results of qPCR, Western-boltting and immunohistochemistry showed that, the expression of ABCG2 gene and protein in duodenum and jejunum in HP1 group was significantly higher than that in CP group and HP1 group (P<0.05 or P<0.01), and the expression in kidney was significantly lower than that in CP group and HP1 group (P<0.05 or P<0.01). The expression of ABCG2 gene and protein in HP1 group was significantly higher than that in CP group (P<0.05), and the expression in kidney was significantly lower than that in CP group (P<0.05). In conclusion, feeding high protein diet resulted in the damage of liver and kidney cells, the increase of uric acid level in vivo, the hyperuricemia of gosling, the increase of ABCG2 expression in jejunum and duodenum, and the decrease of ABCG2 expression in kidney.

Key words: high protein diet, hyperuricemia, ABCG2, gosling

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