Abstract
Purpose
The aim of this study was to evaluate the expression of miR-125a-5p in patients with dyspeptic symptoms and gastric cancer, correlating them with the development of this cancer and H. pylori.
Methods
Patients were divided in groups according to histopathological analysis (control, gastritis, and cancer groups). Polymerase chain reaction was performed to detect H. pylori and real-time quantitative PCR to determine miR-125a-5p expression.
Results
H. pylori was detected in 44% of the patients, with prevalence in the gastritis and cancer groups. A statistically significant decrease of miR-125a-5p expression was found in the control positive (p = 0.0183*), gastritis positive (p = 0.0380*), and cancer positive (p = 0.0288*) groups when compared with the control negative group.
Conclusion
We suggest that decreased expression of the miRNA-125a-5p associated with the presence of the H. pylori is an important mechanism in gastric diseases and could be a possible marker for early diagnosis of gastric cancer.
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Funding
The authors would like to thank the São Paulo Research Foundation (FAPESP) grant nos. 2018/08481-1 and 2018/02008-2 for the financial support.
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Conceptualization, Mônica Santos and Lucas Rasmussen; data curation, Lucas Rasmussen; formal analysis, Mônica Santos; funding acquisition, Mônica Santos and Lucas Rasmussen; investigation, Mônica Santos and Jéssica Pereira; methodology, Mônica Santos; project administration, Lucas Rasmussen; resources, Lilian Carneiro, Jaqueline Pontes, Mônica Santiago, Marília Smith, and Spencer Payao; software, Mônica Santos and Lucas Rasmussen; supervision, Roger De Labio; validation, Spencer Payao, and Lucas Rasmussen; visualization, Lucas Rasmussen; writing (review and editing), Mônica Santos and Lucas Rasmussen. All authors have read and agreed with the published version of the manuscript.
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Approved by the Ethics and Research Committee of Sagrado Coração University, located in Bauru, State of São Paulo, Brazil (case number 1.119.830), and all subjects signed the consent form.
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dos Santos, M.P., Pereira, J.N., De Labio, R.W. et al. Decrease of miR-125a-5p in Gastritis and Gastric Cancer and Its Possible Association with H. pylori. J Gastrointest Canc 52, 569–574 (2021). https://doi.org/10.1007/s12029-020-00432-w
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DOI: https://doi.org/10.1007/s12029-020-00432-w