Asian-Australasian Journal of Animal Sciences

  • 제31권10호
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  • Pages.1591-1597
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  • 2018
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  • 1011-2367(pISSN)
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  • 1976-5517(eISSN)
아세아태평양축산학회 (Asian Australasian Association of Animal Production Societies)
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Expression of selenium-independent glutathione peroxidase 5 (GPx5) in the epididymis of Small Tail Han sheep

  • Li, Ruilan (College of Animal Science, Inner Mongolia Agricultural University) ;
  • Fan, Xiaomei (College of Animal Science, Inner Mongolia Agricultural University) ;
  • Zhang, Tong (College of Animal Science, Inner Mongolia Agricultural University) ;
  • Song, Huizi (College of Animal Science, Inner Mongolia Agricultural University) ;
  • Bian, Xiaona (College of Animal Science, Inner Mongolia Agricultural University) ;
  • Nai, Rile (College of Animal Science, Inner Mongolia Agricultural University) ;
  • Li, Jinquan (College of Animal Science, Inner Mongolia Agricultural University) ;
  • Zhang, Jiaxin (College of Animal Science, Inner Mongolia Agricultural University)
  • 투고 : 2018.01.03
  • 심사 : 2018.03.29
  • 발행 : 2018.10.01
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초록

Objective: Selenium-independent glutathione peroxidase (GPx5) is specifically expressed in the mammalian epididymis and plays an important role in protecting sperm from reactive oxygen species and lipid peroxidation damage. This study investigates GPx5 expression in the epididymis of Small Tail Han sheep. Methods: GPx5 expression was studied in three age groups: lamb (2 to 3 months), young (8 to 10 months), and adult (18 to 24 months). The epididymis of each age group divided into caput, corpus and cauda, respectively. Analysis the expression quantity of GPx5 in epididymis and testis by real-time fluorescent quantitative polymerase chain reaction and Western blot. Finally, GPx5 protein locating in the epididymis by immunohistochemical. Results: The results demonstrate that in the lamb group, the GPx5 mRNA, but not protein, can be detected. GPx5 mRNA and expressed protein were detected in both the young and adult groups. Moreover, both the mRNA and protein levels of GPx5 were significantly higher in the young group than in other two groups. When the different segments of epididymis were investigated, GPx5 mRNA was expressed in each segment of epididymis regardless of age. Additionally, the mRNA level in the caput was significantly higher than that in corpus and cauda within same age group. The GPx5 protein was in the epithelial cells' cytoplasm. However, GPx5 mRNA and protein were not detected in the testis. Conclusion: These results suggest that GPx5 is mainly expressed in the epididymis of Small Tail Han sheep, and that the expression level of GPx5 is associated with age. Additionally, GPx5 was primarily expressed in the epithelial cells of the caput. Taken together, these studies indicate that GPx5 is expressed in the epididymis in all age grades.

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참고문헌

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