Clinical significance of Helicobacter pylori cagA and iceA genotype status

AIM: To study the presence of Helicobacter pylori (H. pylori) virulence factors and clinical outcome in H. pylori infected patients. METHODS: A prospective analysis of ninety nine H. pylori-positive patients who underwent endoscopy in our Endoscopy suite were included in this study. DNA was isolate...

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Main Authors:	Mohammad Amjad, Nasser, Osman, Hussain Ali, Abdul Razak, Najibah, Kassian, Junaini, Din, Jeffri, Abdullah, Nasuruddin
Format:	Article
Language:	English
Published:	Baishideng Publishing Group 2010
Subjects:	QR Microbiology RD92 Wounds and injuries
Online Access:	http://irep.iium.edu.my/3554/ http://irep.iium.edu.my/3554/ http://irep.iium.edu.my/3554/ http://irep.iium.edu.my/3554/1/clinical_significance_of_helicobacter_pylori_cagA_and_iceA_genotype_status.pdf

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spelling	iium-35542011-10-24T08:25:33Z http://irep.iium.edu.my/3554/ Clinical significance of Helicobacter pylori cagA and iceA genotype status Mohammad Amjad, Nasser Osman, Hussain Ali Abdul Razak, Najibah Kassian, Junaini Din, Jeffri Abdullah, Nasuruddin QR Microbiology RD92 Wounds and injuries AIM: To study the presence of Helicobacter pylori (H. pylori) virulence factors and clinical outcome in H. pylori infected patients. METHODS: A prospective analysis of ninety nine H. pylori-positive patients who underwent endoscopy in our Endoscopy suite were included in this study. DNA was isolated from antral biopsy samples and the presence of cagA, iceA, and iceA2 genotypes were determined by polymerase chain reaction and a reverse hybridization technique. Screening for H. pylori infection was performed in all patients using the rapid urease test (CLO-Test). RESULTS: From a total of 326 patients who underwent endoscopy for upper gastrointestinal symptoms, 99 patients were determined to be H. pylori-positive. Peptic ulceration was seen in 33 patients (33%). The main virulence strain observed in this cohort was the cagA gene isolated in 43 patients. cagA was associated with peptic ulcer pathology in 39.5% (17/43) and in 28% (16/56) of non-ulcer patients. IceA1 was present in 29 patients (29%) and iceA2 in 15 patients (15%). Ulcer pathology was seen in 39% (11/29) of patients with iceA1, while 31% (22/70) had normal findings. The corresponding values for iceA2 were 33% (5/15) and 33% (28/84), respectively. CONCLUSION: Virulence factors were not common in our cohort. The incidence of factors cagA, iceA1 and iceA2 were very low although variations were noted in different ethnic groups. Baishideng Publishing Group 2010-09-21 Article PeerReviewed application/pdf en http://irep.iium.edu.my/3554/1/clinical_significance_of_helicobacter_pylori_cagA_and_iceA_genotype_status.pdf Mohammad Amjad, Nasser and Osman, Hussain Ali and Abdul Razak, Najibah and Kassian, Junaini and Din, Jeffri and Abdullah, Nasuruddin (2010) Clinical significance of Helicobacter pylori cagA and iceA genotype status. World Journal of Gastroenterology (WJG), 16 (35). pp. 4443-4447. ISSN 1007-9327 http://www.wjgnet.com/1007-9327/abstract/v16/i35/4443.htm 10.3748/wjg.v16.i35.4443
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	QR Microbiology RD92 Wounds and injuries
spellingShingle	QR Microbiology RD92 Wounds and injuries Mohammad Amjad, Nasser Osman, Hussain Ali Abdul Razak, Najibah Kassian, Junaini Din, Jeffri Abdullah, Nasuruddin Clinical significance of Helicobacter pylori cagA and iceA genotype status
description	AIM: To study the presence of Helicobacter pylori (H. pylori) virulence factors and clinical outcome in H. pylori infected patients. METHODS: A prospective analysis of ninety nine H. pylori-positive patients who underwent endoscopy in our Endoscopy suite were included in this study. DNA was isolated from antral biopsy samples and the presence of cagA, iceA, and iceA2 genotypes were determined by polymerase chain reaction and a reverse hybridization technique. Screening for H. pylori infection was performed in all patients using the rapid urease test (CLO-Test). RESULTS: From a total of 326 patients who underwent endoscopy for upper gastrointestinal symptoms, 99 patients were determined to be H. pylori-positive. Peptic ulceration was seen in 33 patients (33%). The main virulence strain observed in this cohort was the cagA gene isolated in 43 patients. cagA was associated with peptic ulcer pathology in 39.5% (17/43) and in 28% (16/56) of non-ulcer patients. IceA1 was present in 29 patients (29%) and iceA2 in 15 patients (15%). Ulcer pathology was seen in 39% (11/29) of patients with iceA1, while 31% (22/70) had normal findings. The corresponding values for iceA2 were 33% (5/15) and 33% (28/84), respectively. CONCLUSION: Virulence factors were not common in our cohort. The incidence of factors cagA, iceA1 and iceA2 were very low although variations were noted in different ethnic groups.
format	Article
author	Mohammad Amjad, Nasser Osman, Hussain Ali Abdul Razak, Najibah Kassian, Junaini Din, Jeffri Abdullah, Nasuruddin
author_facet	Mohammad Amjad, Nasser Osman, Hussain Ali Abdul Razak, Najibah Kassian, Junaini Din, Jeffri Abdullah, Nasuruddin
author_sort	Mohammad Amjad, Nasser
title	Clinical significance of Helicobacter pylori cagA and iceA genotype status
title_short	Clinical significance of Helicobacter pylori cagA and iceA genotype status
title_full	Clinical significance of Helicobacter pylori cagA and iceA genotype status
title_fullStr	Clinical significance of Helicobacter pylori cagA and iceA genotype status
title_full_unstemmed	Clinical significance of Helicobacter pylori cagA and iceA genotype status
title_sort	clinical significance of helicobacter pylori caga and icea genotype status
publisher	Baishideng Publishing Group
publishDate	2010
url	http://irep.iium.edu.my/3554/ http://irep.iium.edu.my/3554/ http://irep.iium.edu.my/3554/ http://irep.iium.edu.my/3554/1/clinical_significance_of_helicobacter_pylori_cagA_and_iceA_genotype_status.pdf
first_indexed	2023-09-18T20:11:25Z
last_indexed	2023-09-18T20:11:25Z
_version_	1777407503317860352

Clinical significance of Helicobacter pylori cagA and iceA genotype status

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