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  • Title: [Demonstration and ontogenesis in the rat of a serum protein analogous to human thyroxine binding globulin].
    Author: Savu L, Vranckx R, Maya M, Nunez EA.
    Journal: C R Acad Sci III; 1987; 305(17):627-32. PubMed ID: 2448017.
    Abstract:
    It has been reported evidence based on equilibrium binding, electrophoretic, immunoelectrophoretic studies, that the rat possesses a major high affinity thyroid hormone binding protein, with an electrophoretic mobility and binding properties similar to those of the human thyroxine binding globulin (TBG). It is shown that in the sera of postnatal developing animals, between 3 and 21 days, the thyroxine (T4) and the triiodothyronine (T3) binding activities increase up to 10 times over adult or foetal levels, due to a high transient post-natal surge of the rat TBG. In the adult serum, the TBG persists in decreased amounts: it then yields the predominant role as T4 carrier to the thyroid binding prealbumin (TBPA), but retains the major role as binder of T3, i.e. of the biologically active thyroid hormone.
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