Advances in Clinical and Experimental Medicine

Title abbreviation: Adv Clin Exp Med
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ISSN 1899–5276 (print)
ISSN 2451-2680 (online)
Periodicity – monthly

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Advances in Clinical and Experimental Medicine

2017, vol. 26, nr 1, January-February, p. 39–43

doi: 10.17219/acem/33116

Publication type: original article

Language: English

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The effect of proton pump inhibitors on the gastric mucosal microenvironment

Yen-Chun Peng1,2,3,A,B,C,D,E,F, Lan-Ru Huang4,A,C,E, Hui-Ching Ho5,C, Chi-Sen Chang4,C,E, Shou-Wu Lee1,E, Ching-Chang Cheng6,E, May-Ching Wen7,C, Hong-Zen Yeh1,E, Shu-Peng Ho2,A,E,F

1 Division of Gastroenterology, Department of Internal Medicine,Taichung Veterans General Hospital, Taichung, Taiwan

2 Department of Veterinary Medicine, School of Medicine, National Chung Hsing University, Taichung, Taiwan

3 National Yang Ming University, Taipei, Taiwan

4 Department of Medical Laboratory Science and Biotechnology, Central Taiwan University of Science and Technology, Taichung, Taiwan

5 Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan

6 Laboratory Animal Service Center, Office of Research and Development, China Medical University, Taichung, Taiwan

7 Department of Pathology, Taichung Veterans General Hospital, Taichung, Taiwan


Background. Proton pump inhibitors (PPIs) are widely applied for acid related disorders, and possess pleiotropic biological functions. The effect of PPIs on the gastric mucosa, neutrophil and Helicobacter pylori (H. pylori) infiltration and glandular atrophy has not been well investigated, particularly the duration of the effects of PPIs.
Objectives. To investigate the effects of PPIs on neutrophil infiltration, H. pylori infiltration and the gastric mucosa.
Material and Methods. A total of 76 adult patients with gastrointestinal symptoms who had undergone upper gastrointestinal endoscopy were enrolled in the study. Each patient’s history was recorded, including smoking, alcohol consumption and the duration of PPI use prior to gastric biopsy. Endoscopic biopsies of gastric antral mucosa were performed and evaluated by histology. Neutrophil and H. pylori infiltration were graded by H & E staining in accordance with the updated Sydney system.
Results. Among the 76 patients, 44 patients had H. pylori infection and 19 patients had taken PPIs for varying durations prior to gastric biopsy. Neutrophil infiltration was significantly inhibited by PPIs (p = 0.005). The duration of PPI use was correlated with inhibition of neutrophil and H. pylori infiltration. A logistical regression analysis demonstrated that PPIs significantly inhibited neutrophil infiltration in the gastric mucosa and were associated with atrophy of the mucosa.
Conclusion. PPIs attenuated neutrophil infiltration of gastric mucosa, and may be related to atrophy of the mucosa.

Key words

Helicobacter pylori, gastric mucosa, proton pump inhibitor, neutrophil

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