Cosecretion of prolactin and growth hormone by dispersed pituitary cells of the adult bullfrog, Rana catesbeiana

Atsuko Oguchi, Tomomi Aida, Aya Koda, Seiji Shioda, Shigeo Nakajo, Tetsuya Kobayashi, Shigeyasu Tanaka, Kazutoshi Yamamoto, Sakaé Kikuyama*

*この研究の対応する著者

    研究成果: Article査読

    1 被引用数 (Scopus)

    抄録

    The coexistence of prolactin (PRL) and growth hormone (GH) was previously demonstrated in newly hatched bullfrog (Rana catesbeiana) tadpoles, whereas in adult bullfrogs, there were no cells containing both PRL and GH. However, a cell blot assay with enzymatically dispersed adult pituitary cells demonstrated the existence of cells secreting both PRL and GH. The number of cells secreting both PRL and GH was reduced by a protein synthesis inhibitor, cycloheximide, but not by an RNA synthesis inhibitor, actinomycin D. In situ hybridization and immunostaining of intact pituitary glands revealed the existence of GH mRNA in some of the PRL-immunoreactive cells and of PRL mRNA in some of the GH-immunoreactive cells. We propose that dispersion of the pituitary cells triggered the translation of GH mRNA in the PRL cells and/or of PRL mRNA in the GH cells.

    本文言語English
    ページ(範囲)10-16
    ページ数7
    ジャーナルGeneral and Comparative Endocrinology
    122
    1
    DOI
    出版ステータスPublished - 2001

    ASJC Scopus subject areas

    • 内分泌学

    フィンガープリント

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