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  • Title: Prolactin stimulation of ornithine decarboxylase activity in the mammary gland may involve an activation of protein kinase C.
    Author: Rillema JA.
    Journal: Proc Soc Exp Biol Med; 1985 Mar; 178(3):490-4. PubMed ID: 3156383.
    Abstract:
    Phorbol myristate acetate (TPA), a protein kinase C activator, stimulates ornithine decarboxylase (ODC) activity in mammary gland explants derived from 12-14 day pregnant mice. The calcium ionophore A23187 similarly stimulates ODC activity. Maximally stimulatory concentrations of TPA and A-23187 produce additive responses. The prolactin (PRL) stimulation of ODC activity is nonadditive to that caused by TPA, A23187 or TPA plus A23187. These observations are compatible with the thesis that the stimulation of ODC activity by PRL may occur via an activation of protein kinase C.
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