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  • Title: Effect of somatostatin on growth hormone release by MtT-F4 rat pituitary tumor in vitro.
    Author: Lis M, Motomatsu T, Chrétien M.
    Journal: Cancer Res; 1977 Aug; 37(8 Pt 1):2612-4. PubMed ID: 194684.
    Abstract:
    Fluoride-stimulated adenylate cyclase is demonstrated inisolated tumor cells of transplantable rat pituitary tumor MtT-F4 in vitro. The intracellular cyclic adenosine 3':5'-monophosphate is lowered in the cells incubated in the presence of synthetic somatostatin. Contrary to the findings reported for normal pituitary, however, the immunoreactive growth hormone release does not change when either somatostatin or phosphodiesterase inhibitors are present in the incubation medium. The presence of dibutyryl cyclic adenosine 3':5'-monophosphate (5 mM) in the incubation medium does not change the rate of growth hormone release by isolated tumor cells.
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