Correlation between expression of MMP-9 and MMP-3 in Helicobacter pylori infected patients with different gastroduodenal diseases

Bagheri, N and Sadeghiani, M and Rahimian, G and Mahsa, M and Shafigh, M and Rafieian-Kopaei, M and Shirzad, H (2018) Correlation between expression of MMP-9 and MMP-3 in Helicobacter pylori infected patients with different gastroduodenal diseases. Arab J Gastroenterol, 19 (4).

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BACKGROUND AND STUDY AIMS: Helicobacter pylori (H. pylori) has been implicated in the pathogenesis of most important gastro-duodenal diseases, such as gastritis, peptic ulcer disease (PUD) and gastric cancer. H. pylori upregulates the expression and activity of several matrix metalloproteinases (MMPs) in the gastric mucosa, but the role of MMP-3 and MMP-9 in infected patients with H. pylori have not been clearly defined yet. We examined mucosal MMP-3 and MMP-9 mRNA levels in gastric mucosa of H. pylori infected patients and evaluated the effects of virulence factors cagA and vacA allelic variants on these levels. We also determined correlation between mucosal MMP-3 and MMP-9 mRNA levels and types of disease. PATIENTS AND METHODS: Total RNA was extracted from gastric biopsies of 50 H. pylori-infected patients and 50 H. pylori-negative patients. Mucosal MMP-3 and MMP-9 mRNA expression level in H. pylori-infected and non-infected gastric biopsies were determined by real time-polymerase chain reaction (PCR). Presence of vacA (vacuolating cytotoxin A) and cagA (cytotoxin associated gene A) virulence factors were evaluated using PCR. RESULTS: The levels of MMP-3 in gastric mucosa were not different between H. pylori-positive and H. pylori-negative patients. There was no correlation between MMP-3 mRNA expression and virulence factor (cagA and vacA allelic variants) and the different types of disease (gastritis and PUD) in infected patients. But MMP-9 mRNA expression was significantly higher in biopsies of H. pylori-infected patients compared to H. pylori-negative patients. Also mucosal MMP-9 mRNA expression in H. pylori-infected patients was significantly associated with cagA status PUD. CONCLUSION: Our results suggest that MMP-9 might be involved in the pathogenesis of H. pylori. PUD could be associated with cag PAI-dependent MMP-9 upregulation.

Item Type: Article
Uncontrolled Keywords: Gastritis, Helicobacter pylori, Matrix metalloproteinase, Peptic ulcer
Subjects: WI Digestive System
WK Endocrine System
QW Microbiology and Immunology
Divisions: Faculty of Medicine
Depositing User: Unnamed user with email
Date Deposited: 19 Dec 2018 05:12
Last Modified: 17 Apr 2019 10:15

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