Acta Veterinaria et Zootechnica Sinica ›› 2020, Vol. 51 ›› Issue (7): 1637-1645.doi: 10.11843/j.issn.0366-6964.2020.07.016

• ANIMAL NUTRITION AND FEEDS • Previous Articles     Next Articles

Effect of Zearalenone on Uterine and Ovarian Antioxidant and Inflammatory Indexes and Related Gene Expression in Prepubertal Gilts

WU Fengyang1, CUI Jia1, YANG Xinyu1, CHEN Baojiang1,2*   

  1. 1. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China;
    2. Hebei Technology Innovation Center of Cattle and Sheep Embryo, Baoding 071000, China
  • Received:2020-02-23 Online:2020-07-25 Published:2020-07-22

Abstract: This study was designed to investigate the effects of zearalenone (ZEA) on the antioxidative and inflammatory indexes and related genes expression of uterus and ovary in prepubertal gilts. A total of 48 Landrace×Yorkshire prepubertal gilts with similar birth parity, breeds and body weight ((23.20±0.68) kg)were randomly divided into 4 groups(12 replicates per group, 1 gilt per replicate). Prepubertal gilts in control group(CON group)were fed a basal diet and those in experimental groups(T1, T2 and T3 groups) were fed test diets supplemented with 200, 800 and 1 600 μg·kg-1 ZEA in the basal diet, respectively. Pretest lasted for 7 d, and formal test lasted for 40 d. The results showed as follows:1)The serum T-AOC and SOD activity of prepubertal gilts in the T3 group were significantly lower than those in the CON group (P<0.05), and the MDA level was significantly higher than that in the CON group(P<0.05). 2)In the uterine tissues of prepubertal gilts in each group, T-AOC activity in group T2 and T3 significantly decreased than those in the CON group (P<0.05), and the SOD activity in the group T3 extremely significantly decreased than that in the CON group (P<0.01). In the ovarian tissues of prepubertal gilts in each group, the activity of T-AOC in the T3 group and the activity of GSH-Px and SOD in the T2 group were significantly lower than those in the CON group(P<0.05), and MDA level in the T3 group was significantly higher than that in the CON group(P<0.05). 3)The serum TNF-α and IL-4 levels of prepubertal gilts in the T2 group were significantly higher than those in the CON group(P<0.05)and IL-10 levels of prepubertal gilts in T1, T2 and T3 groups were significantly lower than those in the CON group(P<0.05). 4)In the uterine tissues of prepubertal gilts in each group, IL-1β level in the T2 group was significantly higher than that in the CON group(P<0.05), and IL-10 levels in T1 and T3 groups were significantly lower than those in the CON group(P<0.05). In the ovarian tissues of prepubertal gilts in each group, level of TNF-α in the T2 group was significantly higher than that in the CON group(P<0.05), and levels of IL-4 in T1, T2 and T3 groups were significantly higher than those in the CON group(P<0.05). 5)In the uterine tissues of prepubertal gilts in each group, the relative expression of Cu/Zn-SOD mRNA in the T3 group was significantly lower than that in the CON group(P<0.05), and the relative expression of IL-1β mRNA in the T2 group was significantly higher than that in the CON group(P<0.05). 6)In the ovarian tissues of prepubertal gilts in each group, the relative expressions of GSH-Px mRNA in the T3 group was significantly lower than that in the CON group(P<0.05), and the relative expressions of IL-1β mRNA in the T2 group was significantly higher than that in the CON group(P<0.05). In conclusion, by inhibiting the expression and synthesis of SOD and GSH-Px, ZEA can reduce the antioxidant performance of uterus and ovary of prepubertalgilts and cause oxidative stress. ZEA can also cause inflammatory responses in the uterus and ovary of prepubertal gilts by promoting the expression and synthesis of TNF-α and IL-1β. Inhibition of IL-10 expression and synthesis inhibits the inflammatory response of the uterus and ovary.

Key words: zearalenone, prepubertal gilts, uterus, ovary, antioxidant, inflammation

CLC Number: