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Related Experiment Videos

Oocyte-somatic cell-endocrine interactions in pigs.

Morag G Hunter1, Victoria Brankin, Ruth L Quinn

  • 1Division of Animal Physiology, School of Biosciences, The University of Nottingham, Sutton Bonington, Loughborough LE12 5RD, UK. morag.hunter@nottingham.ac.uk

Domestic Animal Endocrinology
|June 14, 2005
PubMed
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Oocyte-somatic cell interactions and nutritional factors are crucial for ovarian development and oocyte quality. Proper communication and diet enhance oocyte maturation and embryo survival in pigs.

Area of Science:

  • Reproductive Biology
  • Cellular Signaling
  • Developmental Biology

Background:

  • Oocyte-somatic cell communication is vital for ovarian function and oocyte development.
  • Bone morphogenetic proteins (BMPs) are key regulators of fertility and ovulation rate.
  • Nutritional status influences oocyte quality and subsequent embryo survival.

Purpose of the Study:

  • To investigate the role of oocyte-secreted factors, including BMPs, in regulating porcine granulosa cell function.
  • To examine the impact of nutritional manipulation on oocyte quality and developmental potential in gilts.
  • To elucidate the relationship between oocyte quality and prenatal survival.

Main Methods:

  • Porcine granulosa cell cultures to assess oocyte-secreted factors.

Related Experiment Videos

  • In vivo nutritional studies involving high plane vs. maintenance diets in gilts.
  • In vitro oocyte maturation assays.
  • Assessment of prenatal survival rates.

    • Main Results:

    • Oocyte secretions stimulate granulosa cell proliferation and suppress progesterone production.
    • A functional BMP system is present in the porcine ovary, with BMP receptors in various ovarian cells.
    • High plane nutrition improved oocyte maturation and increased prenatal survival compared to control diets.
    • Changes in circulating hormones and follicular fluid composition were observed with nutritional manipulation.

    Conclusions:

    • Oocyte-somatic cell interactions, mediated in part by BMPs, are critical for regulating granulosa cell function.
    • Nutritional interventions can significantly enhance oocyte quality and developmental competence.
    • Optimizing oocyte quality through diet and understanding cell communication are essential for improving reproductive efficiency and embryo survival.