scholarly journals HELICOBACTER PYLORI INFECTION

2016 ◽  
Vol 23 (10) ◽  
pp. 1243-1246
Author(s):  
Adnan Qadir ◽  
Irfan Younis ◽  
Shahid Raza Khalid ◽  
Zamir Butt ◽  
Shahid Sarwar
Keyword(s):  
Diagnostic Accuracy ◽  
Military Hospital ◽  
Study Program ◽  
Cross Sectional ◽  
Predictive Values ◽  
Stool Antigen Test ◽  
Non Invasive ◽  
Helicobactor Pylori ◽  
Stool Antigen ◽  
H Pylori

Objectives: To determine diagnostic accuracy of H.pylori Stool Antigen test fordiagnosing Helicobactor pylori infection, keeping histopathology as gold standard. Studydesign: Cross sectional Validation Study. Place and duration: Study was conducted indepartment of Gastroenterology Military Hospital, Rawalpindi for six months from 1st November2014 to 30th April, 2015. Patients and methods: Serial patients presenting with dyspepsiafulfilling the inclusion criteria were entered in study program. Endoscopy was performed to takeantral biopsies for histopathology and stool was taken to test H.pylori antigen. SPSS version16.0 was used to analyze the data. Results: Eighty (72.2%) out of 110 patients were male, themean age and standard deviation was 33 ±16yrs. Three patients left study just before startingendoscopy. Eighty (74.76%) cases out of 107 patients were both positive for histology andHpSA test. Stool for H.pylori test was positive in 82 (76.63%) while histopathological diagnosiswas made in 83(77.57%) patients. The sensitivity and specificity were 96.3% and 91.66% whilepositive and negative predictive values of the stool H.pylori test were 97.56%, and 88.0%respectively. Overall the diagnostic accuracy of stool H.pylori test was 94.4% for diagnosisof H. pylori infection. Conclusion: Stool for H.pylori Antigen can be used as alternative tohistopathology due to its non-invasive nature, patient’s preference and ease of repetition.

scholarly journals The Use of 13C-Urea Breath Test for Non-Invasive Diagnosis of Helicobacter pylori Infection in Comparison to Endoscopy and Stool Antigen Test

Diagnostics ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 448
Author(s):  
Hamed Alzoubi ◽  
Asma’a Al-Mnayyis ◽  
Ibrahim Al rfoa ◽  
Amin Aqel ◽  
Mohammad Abu-Lubad ◽  
...  
Keyword(s):  
Breath Test ◽  
Eradication Therapy ◽  
Urea Breath Test ◽  
P Value ◽  
Antigen Test ◽  
Stool Antigen Test ◽  
Non Invasive ◽  
Stool Antigen ◽  
13C Urea Breath Test ◽  
H Pylori

Helicobacter pylori (H. pylori) can cause gastritis, peptic ulcer diseases and gastric carcinoma. Endoscopy as the gold standard method of diagnosis is an invasive procedure that might not be suitable in all scenarios. Therefore, this first study in Jordan aimed to assess the non-invasive 13C urea breath test (UBT) and stool antigen test for diagnosis of H. pylori infection and the successfulness of eradication therapy as alternatives for endoscopy. Hence, a total of 30 patients attending the endoscopy units at Alkarak teaching hospital were asked to complete a questionnaire with demographic and clinical data. They were then tested for H. pylori using 13C UBT and H. pylori stool antigen before having endoscopy. Another 30 patients who were positive for H. pylori by endoscopy were tested using both tests 6 weeks post eradication therapy. Results showed that the rate of H. pylori detection using endoscopy was 56.7% (17/30). Heartburns (82.3%, p value = 0.019), epigastric pain (88.2%, p value = 0.007) and vomiting (70.5%, p value = 0.02) were the most significant symptoms. Family history of peptic ulcer diseases was significantly associated with an increased risk for having a H. pylori positive result (p value = 0.02). Compared to endoscopy, the sensitivity of 13C UBT for the diagnosis of H. pylori was 94.1% (16/17), while it was 76.5% (13/17) for the stool antigen test. The specificity of both tests was equal (76.9%). However, the positive predictive and negative predictive values (84.2% and 90.9%) for 13C UBT were higher than those (81.3% and 71.4%) for the stool antigen test. The accuracy of 13C UBT was 86.7% compared to 76.7% for the stool antigen test. There was an 87% agreement (20 patients out of 23) between both tests when used to assess success of the eradication therapy. In conclusion, the 13C UBT was found to be more sensitive and accurate than the stool antigen test when used for diagnosis; furthermore, it has a comparable outcome to the stool antigen test in assessing the successfulness of the eradication treatment.

scholarly journals Evaluation of a stool antigen test using a mAb for native catalase for diagnosis of Helicobacter pylori infection in children and adults

2014 ◽  
Vol 63 (12) ◽  
pp. 1621-1625 ◽  
Author(s):  
Masumi Okuda ◽  
Takako Osaki ◽  
Shogo Kikuchi ◽  
Junko Ueda ◽  
Yingsong Lin ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Real Time ◽  
Real Time Pcr ◽  
High Specificity ◽  
Antigen Test ◽  
Stool Antigen Test ◽  
Non Invasive ◽  
Significant Difference ◽  
Stool Antigen ◽  
H Pylori

Non-invasive diagnosis of Helicobacter pylori infection is important not only for screening of infection but also for epidemiological studies. Stool antigen tests are non-invasive and are convenient to identify H. pylori infection, particularly in children. We evaluated the stool antigen test, which uses a mAb for native catalase of H. pylori developed in Japan. A total of 151 stool samples were collected from participants (52 children and 99 adults) of the Sasayama Cohort Study and stored between −30 and −80 °C. The stool antigen test used was Testmate pylori antigen (TPAg), and was performed according to the manufacturer’s instructions. Furthermore, we conducted a quantitative real-time PCR test and compared the PCR results with those of the TPAg test. When compared with the results in real-time PCR, the sensitivity of TPAg was 89.5 % overall, 82.7 % for children and 92.4 % for adults, and the specificity was 100 %. The accuracy was 93.4 % overall, 90.4 % for children and 94.9 % for adults, and there was no significant difference in the accuracy of TPAg between children and adults. Five of 28 children (18 %) and five of 38 adults (13 %) were PCR positive with negative TPAg results. Four of five children with positive PCR and negative TPAg results were given a 13C-urea breath test and all four children tested negative. No significant correlation was observed between the TPAg results and DNA numbers of H. pylori in faeces among children or adults. A stool antigen test (TPAg) using a mAb for native catalase is useful for diagnosis of H. pylori in children and adults. Additionally, this test has particularly high specificity.

scholarly journals Prevalence of Helicobacter pylori among Patients with Gastrointestinal Tract (GIT) Symptoms: A Retrospective Study at Selected Africa Air Rescue (AAR) Clinics in Kampala, Uganda, from 2015 to 2019

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Edity Namyalo ◽  
Luke Nyakarahuka ◽  
Matthias Afayoa ◽  
Joel Baziira ◽  
Andrew Tamale ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Cross Sectional Study ◽  
Age Group ◽  
Related Factors ◽  
Cross Sectional ◽  
Stool Antigen Test ◽  
Work Related ◽  
Stool Antigen ◽  
H Pylori ◽  
As Stress

Background. Helicobacter pylori (HP) infection is extremely common worldwide, with almost half of the world’s population infected. In Uganda, no study has been done on the trends of the prevalence of H. pylori infection in the affluent population. Therefore, this retrospective cross-sectional study aimed at determining the trend of H. pylori prevalence among affluent patients presenting with gastrointestinal (GIT) symptoms whose stool samples were tested at selected AAR clinics in Kampala area. Patients were tested for Helicobacter pylori infection using the stool antigen test between January 2015 and December 2019. Results. The overall 5-year H. pylori prevalence was 35.7% (1298/3634). The prevalence was higher in males (36.0% (736/2044)) than in females (35.4% (562/1590)), although not statistically significant (OR = 0.97, p = 0.680, 95% CI: 0.84–1.11). The prevalence of H. pylori infection was significantly higher (39.4%) among patients who belonged to the age group of 19–35 years (OR = 1.49, p < 0.001 , 95% CI: 1.22–1.82). The prevalence for H. pylori among the age group of 19–35, the most productive age, could be attributed to work-related factors such as stress. The highest prevalence (43.4%) was recorded in 2018 and the lowest (21.4%) in 2015; however, the trend of H. pylori infection in the 5 years was fluctuating. Conclusion. H. pylori infestation is a preserve of not only the poor but also the elites. Stressful factors, especially in the age group of 19–35 years, should be appropriately managed.

scholarly journals Accuracy of H. pylori fecal antigen test using fecal immunochemical test (FIT)

2021 ◽  
Author(s):  
S. A. V. Nieuwenburg ◽  
M. C. Mommersteeg ◽  
L. M. M. Wolters ◽  
A. J. van Vuuren ◽  
N. Erler ◽  
...  
Keyword(s):  
Clinical Implications ◽  
Antigen Test ◽  
Main Risk Factor ◽  
User Friendliness ◽  
Stool Antigen Test ◽  
Non Invasive ◽  
The Past ◽  
Immunochemical Test ◽  
Stool Antigen ◽  
H Pylori

Abstract Background Gastric and colorectal cancer (CRC) are both one of the most common cancers worldwide. In many countries fecal immunochemical tests (FIT)-based CRC screening has been implemented. We investigated if FIT can also be applied for detection of H. pylori, the main risk factor for gastric cancer. Methods This prospective study included participants over 18 years of age referred for urea breath test (UBT). Patients were excluded if they had used antibiotics/bismuth in the past 4 weeks, or a proton pomp inhibitor (PPI) in the past 2 weeks. Participants underwent UBT, ELISA stool antigen test in standard feces tube (SAT), ELISA stool antigen test in FIT tube (Hp-FIT), and blood sampling, and completed a questionnaire on user friendliness. UBT results were used as reference. Results A total of 182 patients were included (37.4% male, median age 52.4 years (IQR 22.4)). Of these, 60 (33.0%) tested H. pylori positive. SAT and Hp-FIT showed comparable overall accuracy 71.1% (95%CI 63.2–78.3) vs. 77.6% (95%CI 70.4–83.8), respectively (p = 0.97). Sensitivity of SAT was 91.8% (95%CI 80.4–97.7) versus 94.2% (95%CI 84.1–98.9) of Hp-FIT (p = 0.98). Serology scored low with an overall accuracy of 49.7% (95%CI 41.7–57.7). Hp-FIT showed the highest overall user convenience. Conclusions FIT can be used with high accuracy and sensitivity for diagnosis of H. pylori and is rated as the most convenient test. Non-invasive Hp-FIT test is highly promising for combined upper and lower gastrointestinal (pre-) cancerous screening. Further research should investigate the clinical implications, benefits and cost-effectiveness of such an approach.

scholarly journals Prevalence and factors associated with Helicobacter pylori infection among treatment naïve dyspeptic adults in University of Benin Teaching Hospital, Benin City, Nigeria

2020 ◽  
Vol 21 (2) ◽  
pp. 97-105
Author(s):  
A.O. Odigie ◽  
A.J. Adewole ◽  
A.A. Ekunwe
Keyword(s):  
Helicobacter Pylori ◽  
Teaching Hospital ◽  
Antigen Test ◽  
Cross Sectional ◽  
Stool Antigen Test ◽  
Factors Associated ◽  
Benin City ◽  
Treatment Naïve ◽  
Stool Antigen ◽  
H Pylori

Background: Infectious diseases such as malaria, HIV/AIDS and  tuberculosis have received tremendous attention globally but inspite of the widespread nature of infections caused by Helicobacter pylori, little attention has been paid to it especially in the developing countries. The objective of this study was to determine the prevalence of and factors associated with H. pylori infection among dyspeptic patients attending the University of Benin Teaching Hospital, Benin City, Nigeria. Methodology: This was a hospital based descriptive cross-sectional study of 354 treatment naive dyspeptic patients aged 18 to 44 years, recruited consecutively after obtaining institutional ethical approval and subjects’ informed consent. A pre-tested interviewer administered questionnaire was used to obtain subjects’ data. The stool antigen test was used to detect H. pylori infection. Results: The prevalence of H. pylori infection among the subject  participants was 34.2% (38.4% in female, 24.0% in male, p=0.009). The age group < 20 years had the highest prevalence of 40%. Gender,  occupation, increased body mass index, high number of household  occupants, and rural dwelling, were significantly associated with H. pylori infection (p<0.05) and alcohol intake was inversely related to H. pylori infection (p<0.05). Conclusion: The prevalence of H. pylori infection in University of Benin Teaching Hospital is high and factors such as gender, obesity, occupation with risk of contact, low socio-economic status, and poor hygiene, may be responsible for this.Keywords: Dyspepsia, Helicobacter pylori, infection, stool antigen test

scholarly journals Efficacy of Different Laboratory Tests to Diagnose Helicobacter pylori Infection

2013 ◽  
Vol 8 (1) ◽  
pp. 11-14 ◽  
Author(s):  
MM Shahin Ul Islam ◽  
Shamsun Nahar ◽  
Mst Naznin Sarker ◽  
ASM Salimullah ◽  
Mohammad Asadur Rahman ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Laboratory Tests ◽  
Antigen Test ◽  
Stool Antigen Test ◽  
Non Invasive ◽  
Stool Antigen ◽  
H Pylori

Helicobacter pylori is a Gram negative bacteria which causes chronic gastritis, peptic ulcer disease, primary B-cell gastric lymphoma, and adenocarcinoma of the stomach. There are a set of laboratory tests to diagnose H. pylori infection with a variable accuracy, they are divided into non-invasive tests and invasive tests. Non-invasive tests include serology, urea breath test (UBT) and stool antigen test (SAT). Invasive tests include rapid urease test (RUT), histology and culture. This cross sectional study was carried out in the Department of Gastroenterology, Bangabandhu Sheikh Mujib Medical University (BSMMU) and H. pylori laboratory of International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B) from July 2008 to September 2009 to evaluate the efficacy of RUT, SAT and Culture as a diagnostic tool for H. pylori. Dyspeptic patients were collected from outpatient department of BSMMU. Out of 224 dyspeptic patients 149 patients had ulcers or erosions in the stomach or duodenum. Stool sample could be collected from 139 patients. RUT has sensitivity of 100%, specificity 80.28%, positive predictive value 85% and negative predictive value 100%. Regarding culture, sensitivity is 100%, specificity 94.37%, positive predictive value 95% and negative predictive value 100%. Stool antigen test has sensitivity 95.94%, specificity 92.31%,positive predictive value 93% and negative predictive value 95%. DOI: http://dx.doi.org/10.3329/fmcj.v8i1.16890 Faridpur Med. Coll. J. 2013;8(1): 11-14

scholarly journals Noninvasive diagnosis of Helicobacter pylori among patients with dyspepsia

2020 ◽  
Vol 5 (1) ◽  
pp. 28-34
Author(s):  
Suresh Thapa ◽  
Jiwan Thapa ◽  
Binod Karki ◽  
Dibas Khadka ◽  
Anju Bhandari Thapa
Keyword(s):  
Helicobacter Pylori ◽  
Common Disease ◽  
Antigen Test ◽  
Cross Sectional ◽  
Stool Antigen Test ◽  
Resource Limited ◽  
Gastric Biopsies ◽  
Stool Antigen ◽  
H Pylori ◽  
Good Diagnostic Accuracy

Introduction: Helicobacter pylori (H. pylori) infection is a common disease with disparity in geography, age, race and socioeconomic status. Present study aims to assess the accuracy of noninvasive diagnostic tests. Methods: This is a hospital based cross sectional, observational study of 100 dyspeptic patients during November 2017- June 2018. Profile of dyspeptic patients were recorded in a proforma and accuracy of serology and stool antigen test for H. pylori was compared with histology detection in gastric biopsies. Results: Mean age of patients was 39.5±13.7 years with almost equal gender distribution. Prevalence of H. pylori was 56% with dyspeptic symptoms in gastric biopsies. Significant association of the infection was seen in patients with a longer duration of dyspepsia, pangastritis on endoscopy and chronic gastritis on histologic examination. Stool antigen test had good sensitivity (71%) and specificity (82%) for H. pylori detection compared with standard histological diagnosis. Conclusion: Overall prevalence of H. pylori was 56% and was more common in patients of age > 44 years with dyspepsia. Stool antigen has a good diagnostic accuracy and can be used in resource limited settings. However, we recommend a community based study in larger population.

scholarly journals Evaluation of Rapid stool antigen test for the diagnosis of Helicobacter pylori infection in patients with dyspepsia

2017 ◽  
Vol 10 (2) ◽  
pp. 39-44
Author(s):  
Salma Khatun ◽  
Fahmida Rahman ◽  
Khandaker Shadia ◽  
Indrajit Kumar Dutta ◽  
Mohammad Nazmul Hoq ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Helicobacter Pylori Infection ◽  
Adult Patients ◽  
Antigen Test ◽  
Stool Antigen Test ◽  
Non Invasive ◽  
Stool Antigen ◽  
Stool Samples ◽  
H Pylori

Background and objectives: Several diagnostic assays are used for the detection of Helicobacter pylori infection in suspected peptic ulcer cases. H. pylori stool antigen test is a non-invasive method for the detection of active infection. The present study has evaluated the efficacy of rapid stool antigen test to diagnose H. pylori infection in patients with dyspepsia.Materials and methods: Adult patients with complains of dyspepsia attending the Department of Gastroenterology, Hepatobiliary and Pancreatic Diseases (GHPD) of BIRDEM hospital for endoscopy were included. Gastric biopsy, blood and stool samples were obtained from each participant after informed written consent. Rapid urease test (RUT), serum H. pylori immunoglobulin A (IgA) and IgG and rapid H. pylori stool antigen (HpSAg) tests were performed. Only stool samples were obtained from 31 neonates aged 1 to 30 days as negative control for HpSAg test.Results: A total of 91 adult patients with complain of dyspepsia were included in the study. Out of 91 cases, 17 (18.7%) and 74 (81.3%) had peptic ulcer and erosion respectively. HpSAg was positive in 63.7% cases compared to 42.9% and 62.6% respectively by RUT and IgA. The rate of HpSAg positivity was significantly higher (p<0.05) in ulcer compared to erosion cases. HpSAg test was positive in all (100%) RUT positive cases. Combination of HpSAg test and IgA yielded highest positive result in both ulcer (82.4%) and erosion (84%) cases. H. pylori IgG was positive in all cases.Conclusion: The study has demonstrated that HpSAg test is an effective and non-invasive diagnostic tool to detect active H. pylori infection in suspected dyspeptic patients.IMC J Med Sci 2016; 10(2): 39-44

scholarly journals A Comparative Study between Helicobacter Pylori Antigen in Stool with Histopathology and Rapid Urease Test of Endoscopic Biopsy in PUD Patient

2021 ◽  
Vol 9 (2) ◽  
pp. 19-25
Author(s):  
Md Nazrul Islam Chowdhury ◽  
Syeed Mehbub Ul Kadir ◽  
Qamrun Naher ◽  
Lokesh Chakraborty ◽  
Mohammad Shahadat Hossain ◽  
...  
Keyword(s):  
Diagnostic Tool ◽  
Endoscopic Biopsy ◽  
Rapid Urease Test ◽  
Antigen Test ◽  
Cross Sectional ◽  
Stool Antigen Test ◽  
Ulcer Disease ◽  
Urease Test ◽  
Stool Antigen ◽  
H Pylori

Purpose: To assess stool antigen test as an early effective diagnostic tool like other methods for the diagnosis of H. pylori infection in PUD patient. Patients and Methods: This cross-sectional study was carried in a clinical pathology department of a tertiary level hospital. We included all patients with peptic ulcer disease those who were diagnosed by upper GIT endoscopy. Demographic variables and value of laboratory test including Stool antigen test, rapid urease test was studied in this study. Result: A total of eighty-six patients were undergone for endoscopy after tested for Helicobactor pylori antigen in stool. Among 86 study subjects, Male was 56 (65%) and female was 30 (35%). The Mean (±SD) age was found 38.53(±10.40) years with range from 21 to above 60 years. Stool antigen test positive in 66 (66/86, 76.74%), negative in 20 (20/86, 23.3%). Rapid Urease Test positive in 76 (76/86, 88.4%), negative in 20 (20/86, 11.6%). Histopathology positive in 65 (65/86, 75.58%), negative in 21 (21/86, 24.42%). The result was statistically highly significant (P<0.001). Conclusion: Stool antigen test (SAT) is an early effective diagnostic tool like other methods for the diagnosis of H. pylori infection in our country. CBMJ 2020 July: Vol. 09 No. 02 P: 19-25

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