Abstract
The pre-eminent function of the human placenta is transfer of nutrients, gases and waste products between the mother and the fetus. At the same time, it is also extraordinarily active in the synthesis of a wide range of proteins and other molecules. Some of these are the structural proteins, enzymes, etc., which are part of the normal functional equipment of cells throughout the body and thus are in no sense specific to this particular organ. The respiratory enzymes are one example. Another example, though slightly more limited in overall distribution, is the group of enzymes responsible for steroid synthesis and interconversion; these do not differ from their counterparts in other steroid-producing tissues. In addition, the placenta contains low concentrations of ACTH-related peptides and hypothalamic releasing hormones, none of which differs significantly from their hypothalamic-pituitary counterparts (J.N. Lee et al., 1981, 1982).
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© 1994 G. E. Lamming
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Butt, W.R., Chard, T., Iles, R.K. (1994). Hormones of the Placenta: hCG and hPL. In: Lamming, G.E. (eds) Marshall’s Physiology of Reproduction. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1286-4_5
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