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Effect of luminal administration of thyrotropin-releasing hormone or somatostatin on gastric pH and interaction of these peptides in rats

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An Erratum to this article was published on 01 June 1992

Summary

The effect of intraluminal administration of thyrotropin-releasing hormone (TRH) on gastric pH and release of luminal somatostatin, and a possible interrelationship between TRH and somatostatin in the rat stomach were studied. TRH was administered into the stomach via an intragastric tube at various doses (50 pg/kg-10 μg/kg) and gastric pH was measured after 15 min. The intraluminal administration of TRH significantly decreased gastric pH at doses over 1.0 ng/kg. Time-course studies at a dose of 100 ng/kg TRH exhibited a significant decrease in gastric pH at 15, 30 and 60 min. Furthermore, TRH administration caused a significant increase in immunoreactive-somatostatin (ir-somatostatin) concentrations in the gastric wall and a significant decrease in ir-somatostatin concentrations in the gastric juice. On the other hand, intraluminal administration of somatostatin caused a significant increase in ir-TRH concentrations in the gastric wall and a significant decrease in ir-TRH concentrations in the gastric juice, and significantly raised gastric pH at 5 min. These findings suggest that luminal TRH may exert a regulatory effect on gastric acid secretion, and that TRH may have a possible interaction with somatostatin in the modulation of gastric acid secretion.

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Authors and Affiliations

  1. The First Department of Internal Medicine, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, 466, Nagoya, Japan

    Atsushi Furusawa M.D. & Yoshiaki Maeda

  2. Fourth Department of Internal Medicine, Aichi Medical University, Aichi, Japan

    Terunori Mitsuma

Authors
  1. Atsushi Furusawa M.D.
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  2. Kimitomo Morise
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  3. Yoshiaki Maeda
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  4. Kiyoshi Uchida
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  5. Hiroshi Kaneko
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  6. Kouichi Nakada
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  7. Terunori Mitsuma
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Additional information

An erratum to this article is available at http://dx.doi.org/10.1007/BF02777779.

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Furusawa, A., Morise, K., Maeda, Y. et al. Effect of luminal administration of thyrotropin-releasing hormone or somatostatin on gastric pH and interaction of these peptides in rats. Gastroenterol Jpn 27, 165–171 (1992). https://doi.org/10.1007/BF02777718

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  • DOI: https://doi.org/10.1007/BF02777718

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