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Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
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Embryo gene expression in pig pregnancy.

Lola Llobat1

  • 1Grupo Fisiopatología de la Reproducción, Departamento Producción y Sanidad Animal, Salud Pública y Ciencia y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, Valencia, Spain.

Reproduction in Domestic Animals = Zuchthygiene
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Summary

This review examines gene regulation during pig pregnancy. Key hormonal and lipid substances control embryo development and maternal tissue changes for successful implantation.

Keywords:
gene expressionmolecular mechanismsreproduction

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Area of Science:

  • Reproductive Biology
  • Developmental Biology
  • Genetics

Background:

  • Pregnancy involves dynamic changes in corpora lutea and endometrium.
  • Embryonic gene expression shifts from pluripotency loss to implantation-specific factors.
  • Implantation is a multi-phase process involving conceptus elongation, adhesion, and union.

Purpose of the Study:

  • To review primary gene regulatory mechanisms in pigs during implantation.
  • To highlight the role of specific signaling molecules and hormones.
  • To understand embryo-maternal communication during early pregnancy.

Main Methods:

  • Literature review of primary gene regulatory mechanisms.
  • Analysis of gene expression patterns during embryonic and fetal stages.
  • Examination of hormonal and lipid substance regulation.

Main Results:

  • Gene expression in pig embryos changes significantly during implantation.
  • Growth factors, adhesion molecules, and cytokines are crucial during implantation.
  • Progesterone, oestradiol, and prostaglandins regulate key proteins for embryo development and endometrial remodeling.

Conclusions:

  • Hormonal and lipid substances are central to regulating gene expression for successful pregnancy.
  • Understanding these mechanisms is vital for reproductive success in pigs.
  • This review provides insights into critical gene regulation during pig implantation.