Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Association of CagPAI integrity with severeness of Helicobacter pylori infection in patients with gastritis

Sat Jun 25 09:49:26 2022

(2015) Association of CagPAI integrity with severeness of Helicobacter pylori infection in patients with gastritis. Pathologie Biologie. pp. 252-257. ISSN 0369-8114

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Abstract

Background and aim. - The Helicobacter pylori cag pathogenicity island (cagPAI) is involved in delivery of CagA effector protein and peptidoglycan into host cells and also in IL-8 induction in the human gastric tissue. Diversity of cagPAI may affect disease status and clinical outcome of the infected patients. Our study was aimed to investigate diversity of this island and its intactness in Iranian patients to investigate possible associations between cagPAI integrity and pathological changes of the infected tissue. Material/Patients and methods. - Out of the 75 patients, H. pylori strains were obtained from 30 patients with severe active gastritis (SAG) (n = 11), moderate chronic gastritis (CG) (n = 14) and intestinal metaplasia/dysplasia (IM) (n = 5). Intactness of the cagPAI was determined using 12 sets of primer pairs specific for functionally important loci of cagPAI by polymerase chain reaction (PCR). Results. - The cagPAI positive strains were significantly observed in patients with SAG (52.4) in comparison to those presenting CG (33.3) and IM (14.3). In addition, the presence of intact cagPAI was 87.5 in H. pylori strains isolated from patients with SAG, which was higher than those obtained from patients with CG (12.5) or IM (0). A significant increase in the frequency of caga-cagY and cagW-cagT segments, as exterior proteins of the CagPAI, was illustrated in strains from SAG patients compared with those from patients with CG. Conclusions. - Overall, these results strongly proposed an association between the severity of histopathological changes and intactness of cagPAI in the gastric tissue of patients infected with H. pylori. (C) 2015 Elsevier Masson SAS. All rights reserved.

Item Type: Article
Creators:
CreatorsEmail
Ahmadzadeh, A.UNSPECIFIED
Ghalehnoei, H.UNSPECIFIED
Farzi, N.UNSPECIFIED
Yadegar, A.UNSPECIFIED
Alebouyeh, M.UNSPECIFIED
Aghdaei, H. A.UNSPECIFIED
Molaei, M.UNSPECIFIED
Zali, M. R.UNSPECIFIED
Gholi, MaphUNSPECIFIED
Keywords: H. pylori CagPAI intactness Histopathological changes pathogenicity island epithelial-cells gastroduodenal disease virulence factors diversity genotypes cancer expression strains genes Pathology
Divisions:
Page Range: pp. 252-257
Journal or Publication Title: Pathologie Biologie
Journal Index: ISI
Volume: 63
Number: 6
Identification Number: https://doi.org/10.1016/j.patbio.2015.09.004
ISSN: 0369-8114
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/530

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