Effects of omeprazole on gastric mucosal growth and differentiation in developing rat

Nobuyuki Kakei, Masao Ichinose, Shinko Tsukada, Masae Tatematsu, Noriaki Tezuka, Chie Furihata, Naohisa Yahagi, Masashi Matsushima, Kazumasa Miki, Kiyoshi Kurokawa, Kenji Takahashi, Satoshi Yonezawa, Hiroshi Fukamachi

研究成果: Article査読

12 被引用数 (Scopus)


The effects of omeprazole on developing rat stomach mucosa were investigated. Infant rats were given subcutaneous injections of either omeprazole (25 mg/kg body weight/day) or vehicle once a day from the day after birth. As a result, omeprazole caused an elevation of mucosal pH and suppressed an increase in mucosal pepsinogen and its mRNA levels during stomach development. Histologically, these changes were associated with a reduction in mature pepsinogen-producing cells throughout stomach mucosa. Omeprazole also caused a delay in the expression of cathepsin E in surface mucous cells and an increase in labeled cells with bromodeoxyuridine. Thus, the present results indicate that omeprazole induces an increase in mucosal cell proliferation and delays the differentiation of developing rat stomach mucosa. Since the observed changes were remarkable especially from days 15 to 21 after birth when significant development of acid secretion occurs, the effects of omeprazole appear to be related with the potent acid inhibitory effect of the reagent.

ジャーナルBiochemical and Biophysical Research Communications
出版ステータスPublished - 1993 11月 30

ASJC Scopus subject areas

  • 生物理学
  • 生化学
  • 分子生物学
  • 細胞生物学


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