Asian-Australasian Journal of Animal Sciences

  • 제15권4호
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  • Pages.570-575
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  • 2002
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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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Effects of Active Immunization against Somatostatin or its Analogues on Milk Protein Synthesis of Rat Mammary Gland Cells

  • Kim, J.Y. (School of Agricultural Biotechnology, Seoul National University) ;
  • Cho, K.K. (School of Agricultural Biotechnology, Seoul National University) ;
  • Chung, M.I. (School of Agricultural Biotechnology, Seoul National University) ;
  • Kim, J.D. (National Livestock Research Institute) ;
  • Woo, J.H. (Section on Biophysical Chemistry, Laboratory of Molecular Biology, National Institute of Mental Health) ;
  • Yun, C.H. (School of Agricultural Biotechnology, Seoul National University) ;
  • Choi, Y.J. (School of Agricultural Biotechnology, Seoul National University)
  • 투고 : 2001.09.20
  • 심사 : 2001.11.05
  • 발행 : 2002.04.01
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초록

Effects of active immunization against native 14-mer somatostatin (SRIF, somatotropin releasing inhibiting factor) and its two 14-mer-somatostatin analogues on the milk production in rat mammary cells were studied. Native SRIF, Tyr11-somatostatin (Tyr11-SRIF), and D-Trp8, D-Cys14-somatostatin (Trp8Cys14-SRIF) were conjugated to bovine serum albumin (BSA) for immunogen preparation. Twenty-four female Sprague-Dawley rats were divided into four groups and immunized against saline (Control), SRIF, Tyr11-SRIF, and Trp8Cys14-SRIF at five weeks of age. Booster immunizations were performed at 7, 9, and 11 weeks of age. SRIFimmunized rats were mated at 10 weeks of age. The blood and mammary glands were collected at day 15 post-pregnancy and -lactation. To measure the amount of milk protein synthesis in the mammary gland, mammary cells isolated from the pregnant and the lactating rats, were cultured in the presence of $^3H$-lysine. No significant differences in growth performance, concentration of growth hormone in the circulation, and the amount of milk protein synthesis were observed among the groups. Inductive levels of serum anti-SRIF antibody in the SRIF and Tyr11-SRIF groups but not in the Trp8Cys14-SRIF group, were significantly higher than that of the control group during the pregnancy and lactation periods. The result suggests that active immunization against native 14-mer SRIF and Tyr11-SRIF was able to induce anti-SRIF antibodies, but did not affect the milk protein synthesis.

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참고문헌

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