HP and infection: A total of 55 patients were included in the study, 31 diagnosed with gastric dyspepsia H. pylori‐positive (Hp+), 20 with gastric dyspepsia H. pylori‐negative (Hp−) without previous infection registration and four with histologically normal gastric mucosa and H. pylori‐negative (Hp−) which were used as controls for gene and miRNA expression (RT‐qPCR) and immunohistochemical (IHC) analyses.