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1992 Fiscal Year Final Research Report Summary

Gene expression of gut hormones in physiological and pathological state of stomach

Research Project

Project/Area Number 02454234
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Gastroenterology
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

SUMII Koji  University Medial Hospital Hiroshima University Assistant Professor, 医学部附属病院, 講師 (00116609)

Co-Investigator(Kenkyū-buntansha) YOSHIHARA Masaharu  Hiroshima University School of Medicine Research Associate, 医学部, 助手 (20211659)
KAJIYAMA Goro  Hiroshima University School of Medicine Professor, 医学部, 教授 (40034087)
Project Period (FY) 1990 – 1992
KeywordsGut hormone / Somatostatin / Gastrin / GRP / H^+K^+-ATPase / mRNA / Duodenal ulcer
Research Abstract

1)Gene expression of gastrin and somatostatin in eating and fasting
Gastrin mRNA increased following eating and decreased during fasting. Mucosal somatostatin content and mRNA decreased after postprandial temporal increase, and gradually increased during fasting. These results indicated that somatostatin gene expression and storage of somatostatin to prepare the release of somatostatin to inhibit the acid and gastrin release following eating were important mechanism during fasting.
2)The role of GRP on gastrin release in PPI induced achlorhydria
We found a temporal increase of serum GRP level before increase of serum gastrin by PPI. Mucosal content of GRP depleted and recovered gradually, but GRPmRNA did not changed. Our results indicated that GRP mediate the PPI induced gastrin release in its initial stage.
3)Regulation of HK-ATPase mRNA
HK-ATPase mRNA was increased by PPI induced hypergastrinemia but it was not increased by H2-blocker induced hypergastrinemia, and the increase of HK-ATPase mRNA induced by PPI was inhibited by H2-blocker. These results indicated that gastrin stimulated the release of histamine from ECL-cell and then histamine stimulate HK-ATPase mRNA synthesis through H2-receptor.
4)Studies in peptic ulcer
Organ culture of antral mucosa, in which neurohumoral influences were excluded, revealed that the release and synthesis of gastrin were increased and those of somatostatin were decreased in patients with duodenal ulcer. Gastrin mRNA was increased by PPI but somatostatin mRNA did not changed in human.

  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] S.V.Wu etal: "Effect of inhibition of gastric secretion on antnal gastrin and somatostatin gene expression in rats" Am J Physiol. 258. G788-G793 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.V.Wu etal: "Studies of regulation of gastrin syuthesis and post-translational processing by molecular biology approaches" Neurology of stress Ulcers.Annals of the New York Academy of Science. 597. 17-27 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 竹原 佳彦 他: "オメプラゾール投与下におけるラット胃組織内がストリン、ソマトスタチン、GRPの変化" 消化管ホルモン. X. 68-73 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 侯 偉 他: "十二指腸潰瘍患者前庭部粘膜器官培養によるガストリン・ソマトスタチン分泌" 消化管ホルモン. X. 255-258 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] V.Wu: "Regulation of rat antral gastrin and somatostatin gene expression during starvation and after refeeding" Gostruenterology. 101. 1552-1558 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Tari etal: "Regulation rat gastric H^+/K^+-ATRase alpha-subunit mRNA by omeprazole" Biochim Biphys Acta. 1129. 49-56 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山本 剛荘 他: "Famotidine投与におけるラット胃体部H^+-ATPaseの遺伝子発現に及ぼす影響" 消化管ホルモン. XI. 408-412 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 竹原 佳彦 他: "Omeprazole投与下における内因性GRPの経時的変化" 消化管ホルモン. XI. 413-417 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Wei Hou: "Secretion of somatostatin and guotrin by buman antral mucosa-an invivo study in patieuts with duodenal ulcer and contnol subjects under stimulation of bombesin" Hiroshima Journal of Medical Sciences. 42. 33-40 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 井上 和彦: "ラット胃前庭部ソマトスタチンの生理的調節ー絶食および摂食による影響" 広島大学医学雑誌. 41. (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 侯 偉 他: "十二指腸潰瘍におけるarginine刺激下のソマトスタチンおよびガストリン分泌の検討" 消化管ホルモン. XII. (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山本 剛荘 他: "ヒスタミン刺激のラット胃体部H^+/K^+-ATPaseの遺伝子発現に与える影響" 消化管ホルモン. XII. (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. Vincent Wu et al: "Effects of inhibition of gastric secretion on antral gastrin and somatostatin gene expression in rats." Am. J. Physiol. 258. G788-G793 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.V. Wu et al: "Studies of regulation of gastrin synthesis and post-translational processing by molecular biology approaches." Neurology of stress ulcers, Annals of the New York Academy of Science. 597. 17-27 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Takehara et al: "Effect of omeprazole on gastrin, somatostatin and GRP of rat stomach." Gut Hormone. X. 68-73 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] W. Hou et al: "Somatostatin and gastrin secretions under stimulation of bombesin in organ culture of antral mucosal explants in duodenal ulcer patients." Gut Hormone. X. 255-258 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Vincent Wu et al: "Regulation of rat antral gastrin and somatostatin gene expression during starvation and after refeeding." Gastroenterology. 101. 1552-1558 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Akira Tari et al: "Regulation rat gastric H+/K+ -ATPase alpha-subunit mRNA by omeprazole." Biochim. Biphys. 1129. 49-56 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] G. Yamamoto et al: "Effect on rat gastric HK-ATPase gene expression by famotidine." Gut Hormone. XI. 408-412 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Takehara et al: "Time course of changes in endogenous GRP after intragastric administration of omeprzole." Gut Hormone. XI. 413-417 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Wei Hou: "Secretion of somatostatin and gastrin by human antral mucosa--An in vivo study in patients with duodenal ulcer and control subjects under stimulation of bombesin." Hiroshima Journal of Medical Sciences. 42. 33-40 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Inoue: "Physiological regulation of rat antral somatostatin -Effect of starvation and feeding-" Medical Journal of Hiroshima University. 41(2). (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] W. Hou, et al: "In vitro somatostatin and gastrin release by antral mucosa in response to arginine in patients with duodenalu ulcer." Gut Hormone. XII. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] G. Yamamoto et al: "Effect of histamine on rat gastric HK-ATPase gene expression." Gut Hormone. XII. (1993)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1994-03-24  

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