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A H. Pylori-Independent Mir-21 Overexpression in Gastric Cancer Patients Publisher



Dehdashtian E1 ; Tabatabaeian H2, 3 ; Ghaedi K4, 5 ; Talebi A6 ; Adami B7
Authors
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Authors Affiliations
  1. 1. Department of Microbiology, Faculty of Biological Science, Islamic Azad University, Falavarjan Branch, Isfahan, Iran
  2. 2. Department of Biology, Division of Genetics, Faculty of Sciences, University of Isfahan, Isfahan, Iran
  3. 3. Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
  4. 4. Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Sciences and Technology, University of Isfahan, Isfahan, Iran
  5. 5. Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
  6. 6. Department of Pathology, School of Medicine, Isfahan University of Medical Science, Isfahan, Iran
  7. 7. Department of Animal and Nutritional Sciences, West Virginia University, Morgantown, 26506, WV, United States

Source: Gene Reports Published:2019


Abstract

Background: Gastric cancer is the third leading cause of cancer-related death worldwide. miR-21 is one of the non-coding RNAs drastically deregulated in gastric cancer. However, the expression of miR-21 and its association with the clinicopathological characteristics of gastric cancer patients has not been studied clearly in Iranian population. Objectives: We aimed to analyze the expression level of miR-21 in a set of fresh gastric cancer specimens and healthy control samples. The expression level of miR-21 was then analyzed to explore for the statistically significant correlations with the clinicopathological features of the samples. Methods: miR-21 expression level was quantitatively studied by RT-qPCR. The association studies between miR-21 expression and the clinical data were performed statistically. Results: miR-21 is highly expressed in gastric cancer patients regardless of H. pylori infection. This phenomenon significantly correlates with lymph node (p = 0.022) and peritoneal (p = 0.023) metastasis, stage I of gastric cancer (p = 0.021), greater curvature tumor location (p = 0.030) and bigger tumor size (p = 0.050) in gastric cancer patients in Iranian population. Conclusion: miR-21 is overexpressed in gastric cancer. This perturbation may not be mediated by H. pylori infection. © 2019
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