Detection of Helicobacter Pylori in Endoscopic Biopsies in Sudan

We studied the prevalence of Helicobacter pylori in Sudanese subjects with gastroduodenal inflammation. H. pylori was looked for in biopsy specimens taken from the antrum by two methods: rapid urease test [Campylobacter-like organism (CLO) test] and culture using Skirrow's selective supplement. One hundred subjects were studied. H. pylori was found in 80% of patients with gastritis, 56% of patients with duodenal ulcer, 60% of patients with duodenitis and 16% of normal control subjects. It was neither detected in patients with gastric ulcer, nor in patients with oesophagitis or in those with oesophageal varices due to schistosomiasis, when using culture. However, it was found in 50% of patients with oesophagitis, when using CLO test.

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Prevalence of Helicobacter pylori infection, its correlation with gastroduodenal diseases and the incidence of gastric cancer in Nepal

Journal of Advances in Internal Medicine ◽

10.3126/jaim.v2i2.8777 ◽

2013 ◽

Vol 2 (2) ◽

pp. 52-60 ◽

Cited By ~ 1

Author(s):

Umid Kumar Shrestha ◽

Arnab Ghosh ◽

Vijay M Alurkar ◽

Suresh C Kohli ◽

Subash Sapkota

Keyword(s):

Gastric Cancer ◽

Duodenal Ulcer ◽

Helicobacter Pylori ◽

Gastric Ulcer ◽

Cancer Incidence ◽

Gastric Polyp ◽

Rapid Urease Test ◽

Asian Countries ◽

Urease Test ◽

H Pylori

Background and aims: The Helicobacter pylori (H. pylori) prevalence in Asian countries is highly variable, with higher seroprevalence shown in the previous studies of developing Asian countries. We aimed to determine the current H. pylori prevalence, correlate with gastroduodenal diseases and study gastric cancer incidence in Nepal. Methods: Among 3357 patients referred for endoscopy, 2820 eligible patients underwent upper gastrointestinal endoscopy with biopsy; H. pylori was considered positive when either of Rapid Urease Test (RUT) or histopathology showed positive result. Results: The H. pylori prevalence was 29.4% in overall distribution, 41.1% in gastritis and or duodenitis, 69.5% in gastric ulcer, 84.7% in duodenal ulcer, 20.8% in gastric polyp and 11.5% in gastric cancer. The H. pylori infection was significantly associated with gastritis and or duodenitis [P<0.001; Odds Ratio (OR) 1.53, 95% Confidence Interval (CI) 1.47-1.59], gastric ulcer (P<0.001; OR 18.62, 95% CI 12.40-27.81), duodenal ulcer (P<0.001; OR 48.89, 95% CI 25.23- 94.75), gastric polyp (P=0.001; OR 7.66, 95% CI 3.18-18.44) and gastric cancer (P=0.005; OR 3.78, 95% CI 1.82-7.86). The age-standardized (world) annual rate of gastric cancer in Kaski district of Nepal was 3.3 per 100,000. Conclusions: The H. pylori prevalence in Nepal was lower than that shown in the previous studies of developing Asian countries, but was significantly high in gastritis and or duodenitis, and peptic ulcers. Similarly, the gastric cancer incidence was also low in Nepal and was significantly associated with H. pylori. Further study is needed to establish the association of H. pylori with gastric cancer in Nepal. DOI: http://dx.doi.org/10.3126/jaim.v2i2.8777 Journal of Advances in Internal Medicine 2013;02(02):52-60

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Helicobacter pylori cagA gene Polymorphism in Patients with Gastroduodenal Diseases

Bangladesh Medical Research Council Bulletin ◽

10.3329/bmrcb.v43i1.35152 ◽

2018 ◽

Vol 43 (1) ◽

pp. 37-43

Author(s):

Mahbuba Chowdhury ◽

Sharmeen Ahmed ◽

A.F.M.A.L Masum Khan ◽

Shirin Tarafdar ◽

Ruhul Amin Miah

Keyword(s):

Duodenal Ulcer ◽

Helicobacter Pylori ◽

Gastric Ulcer ◽

Gastric Carcinoma ◽

Peptide Sequence ◽

Rapid Urease Test ◽

Caga Gene ◽

Urease Test ◽

H Pylori ◽

Epiya Motifs

Helicobacter pylori is a genetically diverse bacterial pathogen and its CagA gene is a major virulence factor that plays an important role in gastroduodenal pathologies. The biological function of cagA depends on tyrosine phosphorylation within the EPIYA (Glutamate-Proline-Isoleucine-Tyrosine-Alanine) motifs at the C-terminal region of the protein. This region may undergo polymorphism to give different types of EPIYA motifs. EPIYA motif diversity may provide a useful tool for prediction of H. pylori pathogenic activity and accurate determination of number and type of cagA EPIYA motifs could identify the virulent H. pylori. The aim of this study was to detect H. pylori cagA gene and its polymorphism in endoscopic gastroduodenal biopsy specimen from patients with gastroduodenal diseases in Bangladesh. This cross sectional study was carried out in the Department of Microbiology & Immunology, Bangabandhu Sheikh Mujib Medical University and Center for Advanced Research in Sciences, University of Dhaka during the period from March 2014 to February 2015. Gastric biopsies were collected from 78 patients with gastritis, duodenal ulcer, gastric ulcer and gastric carcinoma. H. pylori was identified by rapid urease test and ureC gene PCR. Presence of cagA gene and number and pattern of cagA EPIYA motif were determined by PCR. DNA sequencing was carried out to confirm the PCR detection method of cagA EPIYA motif and to analyse their peptide sequence. Among 31(39.7%) H. pylori positive cases, 19 (61.3%) were cagA gene positive in 11(55%) gastritis, 4(66.7%) duodenal ulcer, 2(66.7%) gastric ulcer and 2(100%) gastric carcinoma. A significant association was found between cagA gene and duodenal ulcer (p=˂0.05). EPIYA motif of all H. pylori cagA positive cases showed Western type cagA EPIYA ABC. No East Asian EPIYA ABD motif was found. Majority of gastroduodenal cases (57.9%) had 3 copies of EPIYA (ABC type), 26.3% had 4 copies (ABCC type) while remaining 10.5% had AC and 5.2% AB type EPIYA motif. EPIYA ABC was found in 75% of duodenal ulcer followed by 54.5% of gastritis and 50% of both gastric ulcer and gastric carcinoma patients. EPIYA ABCC motif was found in 50% of gastric ulcer and gastric carcinoma patients. Most of the EPIYA motif was EPIYA ABC and some were ABCC which has the risk of developing gastric carcinoma.

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Prevalence of Helicobacter pylori among patients with different gastrointestinal disorders in Saudi Arabia

Medical Journal of Indonesia ◽

10.13181/mji.v25i4.1442 ◽

2017 ◽

Vol 25 (4) ◽

pp. 214-20 ◽

Cited By ~ 8

Author(s):

Mohammed S. Alhussaini

Keyword(s):

Duodenal Ulcer ◽

Helicobacter Pylori ◽

Saudi Arabia ◽

Strong Association ◽

Endoscopic Examination ◽

Rapid Urease Test ◽

Microscopical Examination ◽

Increased Risk ◽

Urease Test ◽

H Pylori

Background: Helicobacter pylori is an important gastrointestinal pathogen associated with gastritis, peptic ulcers, and an increased risk of gastric carcinoma. The present study was carried out to determine the relationship between this organism with different gastrointestinal ailments.Methods: 150 outpatients referrals to Saudi Arabian Medical City, Riyadh, Kingdom of Saudi Arabia was recruited in January to June 2015. Each patient was subjected to endoscopic examination. Biopsy specimens were taken from the stomach for rapid urease test and culture. Suspected H. pylori colonies were subjected to colony morphology identification, microscopical examination and biochemical reactions. The samples were also subjected to PCR to detect ureA subunit of urease gene.Results: The endoscopic examination of patients revealed normal, gastric ulcer, duodenal ulcer, gastritis, and gastric cancer with a rate of 20.7%, 20%, 24%, 33.3%, and 2%, respectively. Direct smear exam revealed that 52% of patients were H. pylori positive while culture and rapid urease test showed a prevalence of 71.33%. Fifty four biopsies (36%) were urease positive after 1 hour at room temperature, 39 (62%) after 1 hour incubation at 37°C and 14 (71.33%) after 24 hours incubation. Isolated H. pylori showed that they were catalase, oxidase, and urease positive. PCR results showed 411-bp fragment, which is indicative for the ureA subunit of urease gene.Conclusion: The prevalence of H. pylori infection was high among tested population. Strong association between H. pylori and duodenal ulcer was noticed. A 411-bp fragment indicative of the ureA subunit of urease gene was detected in all the tested isolates.

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Evidence of mother-child transmission of Helicobacter pylori infection

Arquivos de Gastroenterologia ◽

10.1590/s0004-28032004000400008 ◽

2004 ◽

Vol 41 (4) ◽

pp. 239-244 ◽

Cited By ~ 16

Author(s):

Mario Luis Escobar ◽

Elisabete Kawakami

Keyword(s):

Duodenal Ulcer ◽

Helicobacter Pylori ◽

Family Members ◽

Control Group ◽

Common Source ◽

Rapid Urease Test ◽

Source Of Infection ◽

Group I ◽

Urease Test ◽

H Pylori

BACKGROUND: Low socioeconomical status is a major risk factor for natural acquisition of Helicobacter pylori (H. pylori) infection in developing countries. Its transmission route is unknown but studies suggest person-to-person transmission. AIM: To evaluate seropositivity of anti-H. pylori antibodies in family members of infected symptomatic index patients as compared to family members of symptomatic uninfected index patients. PATIENTS AND METHODS: One hundred and twelve family members of 38 patients who underwent endoscopy to exclude peptic disease were studied. Patients were deemed H. pylori infected or not infected when rapid urease test and histology were both positive or both negative. The family members underwent ELISA serology using the Cobas Core II Kit (Roche) and were classified into three groups: I - 29 family members of 10 H. pylori (+) duodenal ulcer index patients; II - 57 family members of 17 H. pylori (+) index patients without duodenal ulcer; III - 26 family members of 11 H. pylori (-) index patients. RESULTS: Seropositivity of group I and II (infected patients) was higher than the control group, 83% vs 38%, specially in mothers, 81% vs 18%, and in siblings 76% vs 20%. Differences between fathers' seropositivity was not statistically significant in the three groups: 100% vs 86% vs 70%. Seropositivity of all family members (mother, father and siblings) between infected group (I vs II) was similar. CONCLUSION: Prevalence of H. pylori infection was higher in family members of infected patients, but was similar among family members of infected patients with and without duodenal ulcer. H. pylori infection is more frequent in mothers and siblings of infected index children. A common source of infection cannot be excluded, but facts suggest that person-to-person transmission occurs, specially from mother to child.

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H.PYLORI INFECTION

The Professional Medical Journal ◽

10.29309/tpmj/2016.23.03.1479 ◽

2016 ◽

Vol 23 (03) ◽

pp. 307-311

Author(s):

Shabnam Naveed ◽

Syed Masroor Ahmed ◽

Zeeshan Ali ◽

Romana Awan ◽

Humaira Zakir ◽

...

Keyword(s):

Duodenal Ulcer ◽

Gastric Ulcer ◽

Cross Sectional Study ◽

Rapid Urease Test ◽

Viral Etiology ◽

Cross Sectional ◽

Urease Test ◽

Cirrhotic Patients ◽

H Pylori ◽

Study Setting

Objectives: To study the frequency of H. pylori infection and its association as acause of upper G.I bleeding in cirrhosis. Study Design: Cross Sectional Study. Setting: MedicalUnit III, JPMC Karachi. Period: January 2014 to December 2014. Methods: 100 patients ofestablished cirrhosis with upper G.I bleeding were included in this study. These patients wereevaluated for viral etiology of cirrhosis. An upper G.I Endoscopy was performed in all patientsand antral biopsies were taken. Rapid urease test was performed on biopsy specimen fordetection of H.pylori infection. Results: Out of 100 patients 71 were males and 29 were femaleswith age ranging between 14 to 70 years. Among them 53% patients turned out to be positivefor H.Pylori infection with rapid urease test. H.pylori infection was detected in 68.7% of HBsAgpositive patients and in 50% of Anti HCV positive patients. On upper G.I endoscopy 96 patientshad PHG and among them 50 (52%) were positive for H.pylori. 4 patients did not have PHGand among them 3 (75%) were positive for H.pylori. Gastric ulcer was present in 17 patientsand amongst them H.pylori was detected in 10 (58.8%) cases. Duodenal ulcer was present in 5patients and among them 2 (40%) were positive for H.pylori. Gastritis was present in 17 casesamong them 11 (64%) were positive for H.pylori. Duodenitis was present in 13 cases amongthem 11 (84.6%) patients were positive for H.pylori infection. Conclusion: The frequency ofH.pylori infection was low in cirrhotic patients. No association was seen in H.pylori infectionand causes of upper G.I bleeding in cirrhosis including PHG, gastric ulcer and duodenal ulcer

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A Clinical Significance of Helicobacter Pylori Infection in Hemophilic Children with Gastrointestinal Hemorrhage.

Blood ◽

10.1182/blood.v114.22.4442.4442 ◽

2009 ◽

Vol 114 (22) ◽

pp. 4442-4442

Author(s):

Ji Yoon Kim ◽

Yong-Mook Choi ◽

Kun Soo Lee

Keyword(s):

Duodenal Ulcer ◽

Helicobacter Pylori ◽

Chronic Gastritis ◽

Gastrointestinal Hemorrhage ◽

Conflicts Of Interest ◽

Helicobacter Pylori Infection ◽

Rapid Urease Test ◽

Urease Test ◽

Life Threatening ◽

H Pylori

Abstract Abstract 4442 Purpose For hemophiliacs gastrointestinal hemorrhage is a life-threatening complication and can be caused by the Helicobacter pylori infection. In this study, the prevalence of H. pylori infection among child hemophiliacs with gastrointestinal hemorrhage and the recurrence rate after eradication H. pylori treatment was investigated. Patients and Methods Seven children with hemophilia A with hematemesis (age, 5.3∼17.0 year) were evaluated for the causes of gastrointestinal hemorrhage and the detection of H. pylori. Gastroendoscopy was done to find the bleeding focus and for further evaluation including rapid urease test and mucosal biopsy. Result: Four patients had dyspepsia and abdominal pain for several weeks or months prior to hematemesis. Three patients did not show any signs of bleeding. From gastroendoscopy, four patients were diagnosed as duodenal ulcer, one as H. pylori associated chronic gastritis and one as hemorrhagic gastritis. One patient showing a normal finding was diagnosed with adenoid hemorrhage after nasopharyngoscopy. H. pylori infection was found in four of six patients with GI bleeding (3, duodenal ulcer; 1, H. pylori associated chronic gastritis). The patients with H. pylori infection had an eradication treatment of triple therapy and no recurrence happened. Conclusion In child hemophiliacs, H. pylori should also be considered as an important cause of gastrointestinal hemorrhage. The recurrence of the infection and gastrointestinal hemorrhage can be prevented with eradication of H. pylori. Screening test for H. pylori would be needed in child hemophiliacs in endemic area. Disclosures: No relevant conflicts of interest to declare.

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A STUDY ON PREVALENCE OF HELICOBACTER PYLORI IN BLEEDING PEPTIC ULCER USING RAPID UREASE TEST

10.36106/ijsr/4914430 ◽

2021 ◽

pp. 82-83

Author(s):

Lokesh M N ◽

Anil Kumar K N ◽

Madan M

Keyword(s):

Duodenal Ulcer ◽

Helicobacter Pylori ◽

Peptic Ulcer ◽

Peptic Ulcer Disease ◽

Bleeding Peptic Ulcer ◽

Ulcer Bleeding ◽

Rapid Urease Test ◽

Ulcer Disease ◽

Urease Test ◽

H Pylori

BACKGROUND: Helicobacter pylori (H. pylori) is the leading cause of peptic ulcer disease in India. Timely diagnosis and proper treatment is required for the eradication of H. pylori infection and prevention of its associated complications. AIMS AND OBJECTIVES: This study aims to evaluate the prevalence of H. pylori infection in patients presenting with bleeding peptic ulcer. MATERIAL AND METHODS: This is prospective study conducted from January 2019 till January 2021 in patients with bleeding peptic ulcer admitted at BGS Global Institute of Medical Sciences. All the patients under went endoscopy and biopsy was taken from Antral region for Rapid Urease Test. RESULT: 164 patients were included in the study with duodenal ulcer bleeding in 129 (78.6%) patients, gastric ulcer in 30 (18.3%) patients and both gastric and duodenal ulcer in 5 (3.1%) patients. Positivity for RUT was seen in 147 patients (89.6%). CONCLUSION: Early intervention in the patients with peptic ulcer disease in the form of endoscopic biopsy will help in prevention of recurrent bleeding episodes and other associated complications.

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Frequency of rdx A Deletion Mutation Conferring Metronidazole Resistance in Helicobacter pylori

10.51429/ejmm29308 ◽

2020 ◽

Vol 29 (3) ◽

pp. 59-64

Author(s):

Hanaa M. El Maghraby ◽

Samar Mohaseb

Keyword(s):

Helicobacter Pylori ◽

Epigastric Pain ◽

Deletion Mutation ◽

Rapid Urease Test ◽

Rrna Gene ◽

University Hospitals ◽

Metronidazole Resistance ◽

Urease Test ◽

Gastric Biopsies ◽

H Pylori

Background: Metronidazole is one of the antimicrobial drugs that can be used in combination with other drugs for eradication of Helicobacter pylori (H. pylori).Unfortunately, metronidazole resistance in H. plori is an increasing health problem which may be attributed to inactivation of many genes as rdx A gene. Objective: To determine the frequency of rdx A deletion mutation in H. pylori detected in infected patients attending at the Gastroenterology Unit, Zagazig University Hospitals. Methodology: Two gastric biopsies were taken from each enrolled patient by endoscopy. H.pylori detection was done by rapid urease test and polymerase chain reaction (PCR) amplification of 16S rRNA gene. Deletion mutation in rdx A gene was detected by conventional PCR. Results: Out of 134 doubled gastric biopsies obtained from 134 patients, 52.2% were positive for H. pylori. Epigastric pain, vomiting and gastritis were significantly associated with detection of H. pylori infection (p˂ 0.05). Deletion mutation of rdx A gene was detected in 28.6% of H. pylori positive specimens obtained from infected patients. Conclusion: Deletion mutation of rdx A gene is a frequent determinant of rdx A inactivation conferring metronidazole resistance among H. pylori.

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Incidence of Gastric Metaplasia and Helicobacter pylori Infection in Duodenal Bulb – With Specific Reference to Patients With Duodenal Ulcers

Diagnostic and Therapeutic Endoscopy ◽

10.1155/dte.6.17 ◽

1999 ◽

Vol 6 (1) ◽

pp. 17-23 ◽

Cited By ~ 4

Author(s):

Minoru Kawaguchi ◽

Toshihiko Saito

Keyword(s):

Helicobacter Pylori ◽

Duodenal Bulb ◽

Mucosal Injury ◽

Transitional Zone ◽

Specific Reference ◽

Rapid Urease Test ◽

Duodenal Ulcers ◽

Gastric Metaplasia ◽

Urease Test ◽

H Pylori

We determined the incidence of gastric metaplasia in the duodenal bulb of duodenal ulcer patients and the Helicobacter pylori (H. pylori) infection rate at sites with gastric metaplasia. Biopsy of the duodenal bulb showed the presence of gastric metaplasia in 61 of 86 patients (71%) overall and in 18 of 47 patients (38.3%) who had gastrectomy at an early gastric cancer. The histological diagnosis of H. pylori infection showed good agreement (83.3%) with the result of the rapid urease test, indicating that H. pylori occurs in regions with gastric metaplasia. This finding suggests that H. pylori infects gastric metaplasia in the duodenal bulb, causing mucosal injury, which is then transformed into duodenal ulcers. The exact mechanism by which gastric metaplasia is caused is unknown, but it is believed to occur in the transitional zone in the duodenal mucosa.

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Can probiotics improve efficiency and safety profile of triple Helicobacter pylori eradication therapy? A prospective randomized study

Vojnosanitetski pregled ◽

10.2298/vsp150415127g ◽

2016 ◽

Vol 73 (11) ◽

pp. 1044-1049 ◽

Cited By ~ 3

Author(s):

Sasa Grgov ◽

Tomislav Tasic ◽

Biljana Radovanovic-Dinic ◽

Daniela Benedeto-Stojanov

Keyword(s):

Helicobacter Pylori ◽

Randomized Study ◽

Eradication Therapy ◽

Saccharomyces Boulardii ◽

Rapid Urease Test ◽

Group I ◽

Urease Test ◽

Probiotic Strains ◽

The Difference ◽

H Pylori

Background/Aim. Some studies suggest the benefit of applying different probiotic strains in combination with antibiotics in the eradication of Helicobacter pylori (H. pylori) infection. The aim of this study was to evaluate the effect of co-administration of multiple probiotic strains with triple H. pylori eradication therapy. Methods. This prospective study included 167 patients with dyspeptic symptoms and chronic gastritis who were diagnosed with H. pylori infection and randomized into two groups. The group I of 77 patients underwent triple eradication therapy, for 7 days, with lansoprazole, 2 ? 30 mg half an hour before the meal, amoxicillin 2 ? 1.000 mg per 12 hours and clarithromycin 2 ? 500 mg per 12 hours. After the 7th day of the therapy, lansoprazole continued at a dose of 30 mg for half an hour before breakfast for 4 weeks. The group II of 90 patients received the same treatment as the patients of the group I, with the addition of the probiotic cultures in the form of a capsule comprising Lactobacillus Rosell-52, Lactobacillus Rosell-11, Bifidobacterium Rosell-1755 and Saccharomyces boulardii, since the beginning of eradication for 4 weeks. Eradication of H. pylori infection control was performed 8 weeks after the therapy by rapid urease test and histopathologic evaluation of endoscopic biopsies or by stool antigen test for H. pylori. Results. Eradication of H. pylori infection was achieved in 93.3% of the patients who received probiotics with eradication therapy and in 81.8% of patients who were only on eradication therapy without probiotics. The difference in eradication success was statistically significant, (p < 0.05). The incidence of adverse effects of eradication therapy was higher in the group of patients who were not on probiotic (28.6%) than in the group that received probiotic (17.7%), but the difference was not statistically significant. Conclusion. Multiple probiotic strains addition to triple eradication therapy of H. pylori achieves a significantly better eradication success, with fewer side effects of antibiotics.

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