Acta Veterinaria et Zootechnica Sinica ›› 2020, Vol. 51 ›› Issue (11): 2849-2857.doi: 10.11843/j.issn.0366-6964.2020.11.023

• BASIC VETERINARY MEDICINE • Previous Articles     Next Articles

Effects of High Copper on Inflammatory Factors and Cell Proliferation in Rat Kidney Cells

YU Qingqing1, ZHONG Gaolong1, WAN Fang1, NING Zhijun1, WU Shaofeng1, JIANG Xuanxuan1,2, TANG Zhaoxin1, HE Ying2*, HU Lianmei1*   

  1. 1. College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China;
    2. Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning 530001, China
  • Received:2020-05-06 Online:2020-11-25 Published:2020-11-20

Abstract: The purpose of this research was to investigate the effect of copper poisoning on the expression of inflammatory factors and cell proliferation in renal tissues of rat. In this study, 32 healthy rats aged 20 days were selected and randomly divided into 4 groups, 8 in each group. The rats were fed as follows: The copper concentration in the control group was 15 mg·kg-1; high-copper group I: 30 mg·kg-1; high-copper group Ⅱ: 60 mg·kg-1; high-copper group Ⅲ: 120 mg·kg-1. After continuously feeding for 6 months, the mRNA and their proteins expression of Ki-67, PCNA, IL-1β, IL-2, IL-6, IL-18, NF-κB, TNF-α in renal tissues were detected. The results demonstrated that the relative expressions of Ki-67,PCNA mRNA and proteins in renal tissues were significantly decreased with the increase of copper content in feed (P<0.05). Meanwhile, the mRNA expression levels of inflammatory factors including IL-1β, IL-2, IL-6, IL-18, NF-κB, TNF-α in renal tissues were significantly increased (P<0.05). Besides, the relative expression of IL-1β protein was up-regulated in a dose dependent manner, and the relative expression levels of IL-6 and IL-18 proteins increased first and then decreased. In summary, the finding suggested that high copper stimulation inhibited the cell proliferation of rat kidney tissue, promoted the expression of inflammatory factors, and caused inflammatory damage.

Key words: copper, renal, cell proliferation, inflammatory factors, rat

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