Circulating levels of interleukin (IL)-12 and IL-13 in Helicobacter pylori-infected patients, and their associations with bacterial CagA and VacA virulence factors
| Autor: | Mehdi Hadadi-Fishani, Abolghasem Asadi-Saghandi, Mahdi Dehghan Manshadi, Mehdi Moghadampour, Ebrahim Eskandari-Nasab, Alireza Rezaeifar, Hossein Pourmasoumi, Behrooz Sadeghi-Kalani, Adel Sepanjnia, Fatemeh Pourrajab |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Microbiology (medical)
Adult Blotting Western Virulence digestive system Microbiology Helicobacter Infections Cohort Studies Western blot Antigen Bacterial Proteins medicine CagA Humans Analysis of Variance Antigens Bacterial Interleukin-13 General Immunology and Microbiology biology medicine.diagnostic_test Helicobacter pylori Interleukin General Medicine Middle Aged bacterial infections and mycoses biology.organism_classification Antibodies Bacterial Interleukin-12 digestive system diseases Infectious Diseases Phenotype Immunoglobulin G Immunology Interleukin 12 biology.protein bacteria Antibody |
| Zdroj: | Scandinavian journal of infectious diseases. 45(5) |
| ISSN: | 1651-1980 |
| Popis: | The aim of this study was to determine the association of the Helicobacter pylori virulence factors, cytotoxin-associated gene A (CagA) and vacuolating cytotoxin A (VacA) antibodies, with serum levels of interleukin (IL)-12 and IL-13 in H. pylori-infected duodenal ulcer (DU) patients and H. pylori-infected asymptomatic (AS) carriers in order to elucidate any correlation between them.A total of 67 DU patients, 48 AS individuals, and 26 healthy H. pylori-negative subjects were enrolled in this study. Serum concentrations of IL-12 and IL-13 were determined by enzyme-linked immunosorbent assay (ELISA) method. Patient sera were tested by Western blot method to determine the presence of serum antibodies to bacterial virulence antigens p120 (CagA) and p95 (VacA). Serum concentrations of IL-12 and IL-13 were compared in 9 groups, including 4 AS phenotypes (CagA⁺VacA⁺, CagA⁺VacA⁻, CagA⁻VacA⁺, CagA⁻VacA⁻), 4 DU phenotypes (CagA⁺VacA⁺, CagA⁺VacA⁻, CagA⁻VacA⁺, CagA⁻VacA⁻), and 1 control group.The results revealed that DU patients positive for CagA, independent of the anti-VacA antibody status, showed drastically elevated levels of IL-12 (251 ± 43 pg/ml) when compared with the other groups (p = 0.0001). No significant difference was found between groups regarding levels of IL-13 (p0.05).Our findings indicate that in the DU group, the serum concentrations of IL-12 but not of IL-13 were influenced by bacterial CagA, independent of the VacA status, suggesting that high IL-12 levels may contribute to susceptibility to DU in CagA-positive individuals. These findings could possibly be considered to improve the predictive or prognostic values of inflammatory cytokines for DU, and also to design possible novel therapeutic approaches. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|