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Melatonin receptor (MTNR1A and MTNR2B) expression during the breeding season in the yak (Bos grunniens)

Author

Listed:
  • S.-D. Huo

    (College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, P.R. China
    College of Life Science and Engineering, Northwest University for Nationalities, Lanzhou, P.R. China)

  • R.-J. Long

    (College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, P.R. China)

Abstract

Melatonin plays key roles in a wide range of mammalian body functions, which are mediated by the melatonin-specific cell surface receptor (MTNR1A and MTNR1B). To better understand the role of MTNR in the yak (Bos grunniens), we determined the melatonin receptor mRNA expression level. The analysis showed that the MTNR mRNA expression level was higher in the pineal gland tissue than in the hypothalamus, pituitary gland, and ovary (P < 0.01) during the breeding season. Immunofluorescence analyses showed that yak MTNR was located in the pinealocyte, synaptic ribbon, and synaptic spherules of the pineal gland and that melatonin interacts via nerve fibres. In the hypothalamus, MTNR was located in the magnocellular neurons and parvicellular neurons. MTNR was localized in acidophilic cells and basophilic cells in the pituitary gland. In the ovary, MTNR was present in the ovarian follicle, corpus luteum, and Leydig cells.

Suggested Citation

  • S.-D. Huo & R.-J. Long, 2014. "Melatonin receptor (MTNR1A and MTNR2B) expression during the breeding season in the yak (Bos grunniens)," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 59(3), pages 140-145.
    • Handle: RePEc:caa:jnlcjs:v:59:y:2014:i:3:id:7294-cjas
    DOI: 10.17221/7294-CJAS
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