Distinct regulation of two hydroxysteroid sulfotransferases, ST2A1 and ST2A2, by growth hormone: A unique type of growth hormone regulation in rats

Rika Ueda, Miki Shimada, Hisashi Hashimoto, Hiroshi Ishikawa, Yasushi Yamazoe

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    In the present study, changes in the mRNAs of two major forms of hydroxysteroid sulfotransferases (STs), ST2A1 and ST2A2, have been determined in different growth hormone (GH) states. Hepatic ST2A1 mRNA was detected in both sexes of mature Sprague-Dawley rats. The level was 5 times higher in the females than in the males. ST2A1 mRNA was undetectable in GH-deficient animals, such as hypophysectomized rats and spontaneous dwarf rats. Continuous infusion of GH (mimicking the female secretory pattern) increased hepatic levels of ST2A1 mRNA in both GH-deficient animals. ST2A2 mRNA was detected only in the livers of mature female rats and in both sexes of GH- deficient animals. Intermittent injection of GH (mimicking male secretory pattern) strongly suppressed hepatic levels of ST2A2 mRNA in both GH- deficient animals. These results indicate that pituitary GH independently regulates both ST2A1 and ST2A2 at the pretranslational levels. These differences in GH responses between ST2A1 and ST2A2 are in good agreement with their female-dominant and female-specific modes of expression in normal rats. Furthermore, the present study demonstrates a unique response of ST2A2 to the secretory pattern of GH among the drug-metabolizing enzymes in rat livers, in which ST2A2 mRNA levels are suppressed by the male secretory pattern but not by the female secretory pattern of GH.

    Original languageEnglish
    Pages (from-to)1117-1121
    Number of pages5
    JournalJournal of Pharmacology and Experimental Therapeutics
    Volume282
    Issue number2
    Publication statusPublished - 1997 Aug 1

    ASJC Scopus subject areas

    • Molecular Medicine
    • Pharmacology

    Fingerprint Dive into the research topics of 'Distinct regulation of two hydroxysteroid sulfotransferases, ST2A1 and ST2A2, by growth hormone: A unique type of growth hormone regulation in rats'. Together they form a unique fingerprint.

    Cite this