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Article

Gastric motility in ghrelin receptor knockout mice

  • Authors:
    • Cheng-Guang Yang
    • Wei-Gang Wang
    • Jun Yan
    • Jian Fei
    • Zhi-Gang Wang
    • Qi Zheng
  • View Affiliations / Copyright

    Affiliations: Department of General Surgery, The Affiliated Sixth Hospital of Medical School, Shanghai Jiaotong University, Shanghai 200233, P.R. China, Shanghai Research Center for Model Organisms, Shanghai 201203, P.R. China
  • Pages: 83-88
    |
    Published online on: October 29, 2012
       https://doi.org/10.3892/mmr.2012.1157
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Abstract

The aim of this study was to investigate the effects and possible mechanisms of ghrelin receptor (GHS-R) deficiency on gastric motility in GHS-R deficient (Ghsr-/-) mice. Ghsr-/- and control (Ghsr+/+) mice were genotyped by PCR. The percentage of gastric emptying (GE%) was calculated following the intraperitoneal adminis­tration of ghrelin. In vitro, the contractile response of smooth muscle strips to ghrelin and electrical field stimulation (EFS) and the intraluminal pressure change of isolated stomach to carbachol were observed in an organ bath. The staining of nerve cells in the gastric muscle layer was performed by immunofluorescence. Delayed gastric emptying was observed in the Ghsr-/- mice; ghrelin enhanced the GE% in the Ghsr+/+ mice but had no effect on the GE% in the Ghsr-/- mice. In vitro, the response of the strips to ghrelin and EFS and the intraluminal pressure change to cabarchol was reduced in the Ghsr-/- mice. GHS-Rs were predominantly expressed on nerve cells in gastric muscle layers. The number of nerve cells was observed to be decreased in the Ghsr-/- mice. The delayed gastric emptying may relate to the loss of GHS-Rs and the reduction in the number of nerve cells in the gastric muscle layers of the GHS-R-deficient mice.
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Copy and paste a formatted citation
Spandidos Publications style
Yang C, Wang W, Yan J, Fei J, Wang Z and Zheng Q: Gastric motility in ghrelin receptor knockout mice. Mol Med Rep 7: 83-88, 2013.
APA
Yang, C., Wang, W., Yan, J., Fei, J., Wang, Z., & Zheng, Q. (2013). Gastric motility in ghrelin receptor knockout mice. Molecular Medicine Reports, 7, 83-88. https://doi.org/10.3892/mmr.2012.1157
MLA
Yang, C., Wang, W., Yan, J., Fei, J., Wang, Z., Zheng, Q."Gastric motility in ghrelin receptor knockout mice". Molecular Medicine Reports 7.1 (2013): 83-88.
Chicago
Yang, C., Wang, W., Yan, J., Fei, J., Wang, Z., Zheng, Q."Gastric motility in ghrelin receptor knockout mice". Molecular Medicine Reports 7, no. 1 (2013): 83-88. https://doi.org/10.3892/mmr.2012.1157
Copy and paste a formatted citation
x
Spandidos Publications style
Yang C, Wang W, Yan J, Fei J, Wang Z and Zheng Q: Gastric motility in ghrelin receptor knockout mice. Mol Med Rep 7: 83-88, 2013.
APA
Yang, C., Wang, W., Yan, J., Fei, J., Wang, Z., & Zheng, Q. (2013). Gastric motility in ghrelin receptor knockout mice. Molecular Medicine Reports, 7, 83-88. https://doi.org/10.3892/mmr.2012.1157
MLA
Yang, C., Wang, W., Yan, J., Fei, J., Wang, Z., Zheng, Q."Gastric motility in ghrelin receptor knockout mice". Molecular Medicine Reports 7.1 (2013): 83-88.
Chicago
Yang, C., Wang, W., Yan, J., Fei, J., Wang, Z., Zheng, Q."Gastric motility in ghrelin receptor knockout mice". Molecular Medicine Reports 7, no. 1 (2013): 83-88. https://doi.org/10.3892/mmr.2012.1157
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