Significance of calcium-sensing receptor expression in gastric cancer

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Objective. The calcium-sensing receptor (CaSR) is known to have differential expression in various carcinomas and normal tissues. It has been shown to be involved in carcinogenesis or tumor suppression. However, its role in gastric cancer remains unknown. This study was performed to determine the CaSR expression level in gastric cancer and non-tumor gastric tissues and to examine the related clinicopathological factors. Materials and methods. Thirty-one pairs of gastric cancer tissues and matched non-tumor gastric tissues were obtained from surgical tissues after gastrectomy. Using real-time polymerase chain reaction, we measured CaSR mRNA expression. We evaluated the association between CaSR mRNA expression and clinicopathological variables based on the downregulation or upregulation of CaSR mRNA expression in gastric cancer tissues compared to those of matched non-tumor gastric tissues. By immunohistochemistry, we confirmed CaSR expression levels in gastric cancer tissues. Results. Downregulation of CaSR mRNA was observed in 77.4% of gastric cancer tissues compared to their matched normal tissues. Downregulated CaSR was associated with a tendency for deeper invasion into the proper muscle (p = 0.028) and more advanced stage (II-IV; p = 0.012). Conclusion. We conclude that downregulation of CaSR may contribute to the prevention or suppression of tumor outgrowth.

Original languageEnglish
Pages (from-to)67-72
Number of pages6
JournalScandinavian Journal of Gastroenterology
Volume51
Issue number1
DOIs
StatePublished - 2 Jan 2016

Keywords

  • calcium-sensing receptor
  • gastric cancer
  • tumor markers
  • tumor suppression

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