Acta Veterinaria et Zootechnica Sinica ›› 2023, Vol. 54 ›› Issue (5): 1771-1781.doi: 10.11843/j.issn.0366-6964.2023.05.001

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Advances in the Regulation of Mammal Reproduction by the Interaction of Circadian Rhythm and Estrogens

WANG Wei, HE Xiaoyun*, CHU Mingxing*   

  1. Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2022-10-14 Online:2023-05-23 Published:2023-05-20

Abstract: The circadian system is an internal timer system in most mammals, as the main circadian clock, the hypothalamic suprachiasmatic nucleus (SCN) coordinates the timing of the organizational clock to align internal rhythms with environmental cycles. Cells in the SCN core are capable of receiving light signaling directly from intrinsically photosensitive retinal ganglion cells (ipRGCs), whose endogenous oscillations determine behavioral and physiological rhythms throughout the animal. Estrogen is capable of regulating a variety of biological processes of mammals, including but not limited to the circadian rhythmic behavior of the estrous cycle. Estrogen and SCN synergistically regulate GnRH secretion, LH peak, ovulation, and resulting in the regu-lation of the mammalian reproductive process. This paper reviews the recent research progress in the mutual regulation of estrogen and circadian rhythm in female mammals, including the phenomenon of estrogen secretion and circadian rhythm, the molecular link between estrogen and circadian rhythm, and their regulation mechanism on the reproduction of female mammals. These results can provide a reference for further exploration of the reproductive rhythm and hormone regulation mechanism of female mammals.

Key words: mammals, circadian rhythm, estrogen, SCN, reproduction regulation

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