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  • Title: Effects of acidic and basic fibroblast growth factors on cell proliferation in pleomorphic adenoma of the parotid gland.
    Author: Matsushita F, Daa T, Nakayama I, Mogi G.
    Journal: Acta Otolaryngol; 1997 Jul; 117(4):634-9. PubMed ID: 9288226.
    Abstract:
    Localization and biochemical characteristics of acidic and basic fibroblast growth factor (aFGF and bFGF) were studied in the normal parotid gland (NPG) and in pleomorphic adenoma (PA). In addition, the effects of these factors on proliferation activity were investigated in cultured PA cells. aFGF and bFGF were detected immunohistochemically in 62% and 58% of NPG and 44% and 58% of PA, respectively, and they localized in the cytoplasm of the ductal segments of the NPG, and of the tubular, trabecular and squamous components of PA. Both aFGF and bFGF, each with a molecular weight of 18 kDa, were identified in PA using heparin-sepharose chromatography and Western blot analysis. Both recombinant human aFGF and bFGF stimulated [3H]-thymidine incorporation by cultured PA cells. These results indicated that aFGF and bFGF, probably produced by neoplastic cells, play important roles in the proliferation of PA of the parotid gland.
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