Journal of Capital Medical University ›› 2015, Vol. 36 ›› Issue (3): 432-436.doi: 10.3969/j.issn.1006-7795.2015.03.018

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Distribution of dopamine receptors in gastric mucosal somatostatin-secreting cell of human and mice

Sun Lu, Feng Xiaoyan, Zheng Lifei, Zhang Xiaoli, Zhang Yue, Zhu Jinxia   

  1. Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
  • Received:2015-03-26 Online:2015-06-21 Published:2015-06-15
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (81370482 and 31400991), Natural Science Foundation of Beijing (7132017), the Project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges under Beijing Municipality (IDHT20140514).

Abstract:

Objective To investigate the distribution of dopamine D1, D2 receptors in somatostatin-secreting D cells in gastric corpus mucosa in human and mice. Methods Immunofluorescence was used to detect the expression of dopamine receptors on the somatostatin-secreting D cells in human or mice gastric corpus. Results Abundant immunofluorescence reactivities (IR) of dopamine D1 and D2 receptors, and somatostatin-IR cells were distributed in the gastric corpus mucosa. Furthermore, D2 receptors-IR, not D1 receptors-IR, was observed in the somatostatin-IR cells of mice and human gastric corpus mucosa. Conclusion Dopamine D2 receptors, not D1 receptors were distributed in the gastric somatostatin-secreting D cells of both human and mice, which might mediate the regulation of dopamine on the somatostatin secretion, gastric secretion and motility.

Key words: somatostatin, dopamine receptors, gastric D cell

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