›› 2013, Vol. 40 ›› Issue (3): 38-42.

Previous Articles     Next Articles

Effect of Different Dietary Selenium Concentration on mRNA Levels of Some Selenoprotein in Mice Liver and Testis

ZHENG Liang-yan, ZHANG Qin, LIU Bi-tao, GUO Kai, YU Wen-lan, LIU Zheng-wei, CHEN Ye, GUO Cui-li, TANG Zhao-xin   

  1. College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
  • Received:2012-10-08 Online:2013-03-20 Published:2013-03-19

Abstract: A total of 80 7-week-old male BALB/c mice were randomly divided into four groups (Ⅰ,Ⅱ,Ⅲ and Ⅳ groups),and 20 mice in each group. Each group was fed with the diet containing 0.045,0.1,0.4,and 0.8 mg/kg Se,respectively. The results showed that the content Se of Ⅰ group in the liver reduced significantly (P<0.05). Glutathione peroxidase 1 (GPx1)mRNA levels of Ⅰ group was significant lower than Ⅱ and Ⅲ groups (P<0.05),while Ⅱ and Ⅲ groups were significant differences in the liver (P<0.05),and no significant differences in testis (P>0.05). Glutathione peroxidase 4 (GPx4) mRNA level of Ⅰand Ⅲ groups in liver had no significant difference (P>0.05),but were significant lower than group Ⅱ (P<0.05),while each group had no difference in the testis (P>0.05). Relative mRNA expression of thioredoxin reductase 2 (TrxR2) in liver and testis improved significantly (P<0.05) with the increasing of dietary Se supplemention. In conclusion,in liver and testis,deficient Se dietary could significantly reduce selenium deposition and relative mRNA expression of GPx1,GPx4 and TrxR2,however,excessive Se dietary could significantly reduce GPx1 mRNA levels (P<0.05) and significantly increase TrxR2 mRNA levels (P<0.05),it showed that there was difference for different organs.

Key words: selenium(Se); glutathione peroxidase 1; glutathione peroxidase 4; thioredoxin reductase 2; mRNA; liver; testis

CLC Number: