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Effects of Neurotensin and LANT-6 on Food Intake in Chicks

Received: 20 March 2015     Accepted: 24 March 2015     Published: 6 May 2015
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Abstract

Neurotensin (NT) and an NT-related peptide (Lys, Asn, NT8–13; LANT-6) are produced in the chicken brain and intestine, and these peptides are encoded by the same precursor gene (NT/LANT-6 precursor). Although it has been reported that the central administration of NT suppresses food intake in mammals, the effect of NT and LANT-6 on feeding behavior in birds has not yet been investigated. In this paper, we analyzed the expression levels of NT/LANT-6 precursor and the NT receptor (NTR1) mRNAs in the hypothalamic infundibulum, an important region for regulating feeding behaviors. We also examined the effects of NT and LANT-6 administration on food intake in chicks. Real-time PCR analysis showed that NT/LANT-6 precursor and NTR1 mRNAs had moderately high expression in the hypothalamic infundibulum. Further, in the hypothalamic infundibulum, the mRNA level of NT/LANT-6 precursor showed a trend toward increasing during postnatal development and increased 2.9-fold after a 48 hour fast, although the NTR1 mRNA level was not changed in both analyses. Contrary to our expectations, central administration of NT or LANT-6 had no effect on food intake in chicks.

Published in American Journal of Life Sciences (Volume 3, Issue 3-2)

This article belongs to the Special Issue Biology and Medicine of Peptide and Steroid Hormones

DOI 10.11648/j.ajls.s.2015030302.14
Page(s) 17-23
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Brain, Chicken, Food Intake, Hypothalamic Infundibulum, LANT-6, mRNA, Neurotensin

References
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Cite This Article
  • APA Style

    Keiko Masuda, Eiko Iwakoshi-Ukena, Tetsuya Tachibana, Kazuyoshi Ukena. (2015). Effects of Neurotensin and LANT-6 on Food Intake in Chicks. American Journal of Life Sciences, 3(3-2), 17-23. https://doi.org/10.11648/j.ajls.s.2015030302.14

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    ACS Style

    Keiko Masuda; Eiko Iwakoshi-Ukena; Tetsuya Tachibana; Kazuyoshi Ukena. Effects of Neurotensin and LANT-6 on Food Intake in Chicks. Am. J. Life Sci. 2015, 3(3-2), 17-23. doi: 10.11648/j.ajls.s.2015030302.14

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    AMA Style

    Keiko Masuda, Eiko Iwakoshi-Ukena, Tetsuya Tachibana, Kazuyoshi Ukena. Effects of Neurotensin and LANT-6 on Food Intake in Chicks. Am J Life Sci. 2015;3(3-2):17-23. doi: 10.11648/j.ajls.s.2015030302.14

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  • @article{10.11648/j.ajls.s.2015030302.14,
      author = {Keiko Masuda and Eiko Iwakoshi-Ukena and Tetsuya Tachibana and Kazuyoshi Ukena},
      title = {Effects of Neurotensin and LANT-6 on Food Intake in Chicks},
      journal = {American Journal of Life Sciences},
      volume = {3},
      number = {3-2},
      pages = {17-23},
      doi = {10.11648/j.ajls.s.2015030302.14},
      url = {https://doi.org/10.11648/j.ajls.s.2015030302.14},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajls.s.2015030302.14},
      abstract = {Neurotensin (NT) and an NT-related peptide (Lys, Asn, NT8–13; LANT-6) are produced in the chicken brain and intestine, and these peptides are encoded by the same precursor gene (NT/LANT-6 precursor). Although it has been reported that the central administration of NT suppresses food intake in mammals, the effect of NT and LANT-6 on feeding behavior in birds has not yet been investigated. In this paper, we analyzed the expression levels of NT/LANT-6 precursor and the NT receptor (NTR1) mRNAs in the hypothalamic infundibulum, an important region for regulating feeding behaviors. We also examined the effects of NT and LANT-6 administration on food intake in chicks. Real-time PCR analysis showed that NT/LANT-6 precursor and NTR1 mRNAs had moderately high expression in the hypothalamic infundibulum. Further, in the hypothalamic infundibulum, the mRNA level of NT/LANT-6 precursor showed a trend toward increasing during postnatal development and increased 2.9-fold after a 48 hour fast, although the NTR1 mRNA level was not changed in both analyses. Contrary to our expectations, central administration of NT or LANT-6 had no effect on food intake in chicks.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - Effects of Neurotensin and LANT-6 on Food Intake in Chicks
    AU  - Keiko Masuda
    AU  - Eiko Iwakoshi-Ukena
    AU  - Tetsuya Tachibana
    AU  - Kazuyoshi Ukena
    Y1  - 2015/05/06
    PY  - 2015
    N1  - https://doi.org/10.11648/j.ajls.s.2015030302.14
    DO  - 10.11648/j.ajls.s.2015030302.14
    T2  - American Journal of Life Sciences
    JF  - American Journal of Life Sciences
    JO  - American Journal of Life Sciences
    SP  - 17
    EP  - 23
    PB  - Science Publishing Group
    SN  - 2328-5737
    UR  - https://doi.org/10.11648/j.ajls.s.2015030302.14
    AB  - Neurotensin (NT) and an NT-related peptide (Lys, Asn, NT8–13; LANT-6) are produced in the chicken brain and intestine, and these peptides are encoded by the same precursor gene (NT/LANT-6 precursor). Although it has been reported that the central administration of NT suppresses food intake in mammals, the effect of NT and LANT-6 on feeding behavior in birds has not yet been investigated. In this paper, we analyzed the expression levels of NT/LANT-6 precursor and the NT receptor (NTR1) mRNAs in the hypothalamic infundibulum, an important region for regulating feeding behaviors. We also examined the effects of NT and LANT-6 administration on food intake in chicks. Real-time PCR analysis showed that NT/LANT-6 precursor and NTR1 mRNAs had moderately high expression in the hypothalamic infundibulum. Further, in the hypothalamic infundibulum, the mRNA level of NT/LANT-6 precursor showed a trend toward increasing during postnatal development and increased 2.9-fold after a 48 hour fast, although the NTR1 mRNA level was not changed in both analyses. Contrary to our expectations, central administration of NT or LANT-6 had no effect on food intake in chicks.
    VL  - 3
    IS  - 3-2
    ER  - 

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Author Information
  • Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Japan

  • Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Japan

  • Faculty of Agriculture, Department of Agrobiological Science, Ehime University, Matsuyama, Japan

  • Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Japan

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