User:Selinaasg/Vitellogenesis

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Vitellogenesis is the process of yolk protein formation in the oocytes of non mammalian vertebrates during sexual maturation.^[1] Yolk proteins, such as Lipovitellin and Phosvitin, provides maturing oocytes with the metabolic energy required for development. Vitellogeins are the precursor cells that lead to yolk protein synthesis in the oocyte. Estrogen and vitellogenin production have a positive correlation. When estrogen production in the ovary is increased via the activation of the hypothalmo-pituitary axis it leads to heightened vitellogenin production in the liver.^[2] Vitellogenin production in the the liver is the first step of vitellogenesis. Once Vittelogenins are released into the blood stream where they are then transported to the growing oocyte where they lead to yolk protein production.

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References

^ Wallace, Robin A. (1985), Browder, Leon W. (ed.), "Vitellogenesis and Oocyte Growth in Nonmammalian Vertebrates", Oogenesis, Boston, MA: Springer US, pp. 127–177, doi:10.1007/978-1-4615-6814-8_3, ISBN 978-1-4615-6816-2, retrieved 2022-09-21
^ Ho, Shuk-mei (1987), Norris, David O.; Jones, Richard E. (eds.), "Endocrinology of Vitellogenesis", Hormones and Reproduction in Fishes, Amphibians, and Reptiles, Boston, MA: Springer US, pp. 145–169, doi:10.1007/978-1-4613-1869-9_6, ISBN 978-1-4612-9042-1, retrieved 2022-09-22

[1] Wallace, Robin A. (1985), Browder, Leon W. (ed.), "Vitellogenesis and Oocyte Growth in Nonmammalian Vertebrates", Oogenesis, Boston, MA: Springer US, pp. 127–177, doi:10.1007/978-1-4615-6814-8_3, ISBN 978-1-4615-6816-2, retrieved 2022-09-21

[2] Ho, Shuk-mei (1987), Norris, David O.; Jones, Richard E. (eds.), "Endocrinology of Vitellogenesis", Hormones and Reproduction in Fishes, Amphibians, and Reptiles, Boston, MA: Springer US, pp. 145–169, doi:10.1007/978-1-4613-1869-9_6, ISBN 978-1-4612-9042-1, retrieved 2022-09-22

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