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Serum Levels of Oxidative Stress, Il-8, and Pepsinogen I/Ii Ratio in Helicobacter Pylori and Gastric Cancer Patients: Potential Diagnostic Biomarkers Publisher Pubmed



Nasierhussain M1 ; Samanje JN2 ; Mokhtari K3, 4 ; Nabiafjadi M5 ; Fathi Z6 ; Hoseini A7 ; Bahreini E1
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Authors Affiliations
  1. 1. Department of Biochemistry, Faculty of Medicine, Iran University of Medical Sciences, P.O. Box: 1449614525, Tehran, Iran
  2. 2. Collage of Health and Medical Technology, Middle Technical University, Baghdad, Iraq
  3. 3. Department of Modern Biology, ACECR Institute of Higher Education (Isfahan Branch), Isfahan, Iran
  4. 4. Department of Cellular and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
  5. 5. Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
  6. 6. School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran

Source: BMC Gastroenterology Published:2025


Abstract

Background and aim: Helicobacter pylori (H.pylori), a gram-negative bacterial pathogen associated with an increased risk of gastric cancer. This study investigates potential factors in the incidence of gastric cancer in patients with H.pylori, including oxidative stress, inflammatory biomarkers, serum pepsinogens (PG) of I and II, and PG-I/PG-II ratio. Methods: The study comprised individuals with Helicobacter pylori (H.pylori) infection, gastric cancer patients, and healthy individuals. Biochemical parameters such as FBS (fasting blood sugar), lipid profile, and liver and kidney functional factors were evaluated using colorimetric techniques. Oxidative markers such as total oxidant status (TOS) and malondialdehyde (MDA) were quantified through colorimetric methods. IL-8, PG-II, and PG-II levels were also determined using the ELISA technique. Results: Individuals with H. pylori infection exhibited elevated levels of IL-8 (940.5 ± 249.7 vs. 603.4 ± 89.1 pg/ml, P < 0.0001) and oxidative species (5.47 ± 0.7 vs. 1.64 ± 0.7 nM, P < 0.05) compared to gastric cancer patients, who, despite having lower levels of IL-8 and oxidative species, showed higher levels of MDA. H.pylori patients exhibited significantly higher levels of PG-I (7.28 ± 2.1 vs. 2.61 ± 1.4 ng/ml, P < 0.001), PG-II (3.21 ± 1 vs. 2.6 ± 0.6 ng/ml, P < 0.001), and the PG-I/PG-II ratio (2.27 ± 1.2 vs. 1 ± 0.4, P < 0.001) compared to gastric cancer patients. The findings were substantiated using various data analysis platforms such as Gene Expression Profiling Interactive Analysis (GEPIA), UALCAN (The University of ALabama at Birmingham CANcer data analysis), cBioPortal, and TIMER (Tumor IMmune Estimation Resource). These parameters could serve as potential diagnostic biomarkers for screening and therapeutic interventions based on the cut-off values derived from ROC (receiver operating characteristic) curves for IL-8, PGI, PGII, and PGI/PGII across the three groups. Conclusions: IL-8, PGI, PGII, and PGI/PGII parameters could serve as potential diagnostic markers for the screening and treatment of gastric conditions. © The Author(s) 2024.
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