1
|
Helicobacter pylori infection in children: an overview of diagnostic methods. Eur J Clin Microbiol Infect Dis 2019; 38:1035-1045. [PMID: 30734129 DOI: 10.1007/s10096-019-03502-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 01/31/2019] [Indexed: 12/14/2022]
Abstract
Children differ from adults regarding Helicobacter pylori (H. pylori) infection in many terms. H. pylori infection represents a key factor in the pathogenesis of duodenal ulcer and chronic gastritis in children. H. pylori infection causes some extraintestinal diseases as well as gastrointestinal diseases. Although, among these illnesses in children, symptoms like recurrent abdominal pain are not specific. Moreover, the role of the pathogen in the growth faltering, iron deficiency anemia, and asthma still remains controversial. A reliable method to detect H. pylori infection is a crucial issue, sand is still a matter of active debate. The tests applied for H. pylori diagnosis are grouped as either invasive or non-invasive methods. Invasive methods consist of endoscopic evaluation, the rapid urease test (RUT), histology, and bacterial culture. Non-invasive tests include the urea breath test (UBT), stool antigen test (SAT), serology, and molecular diagnostic approaches. Use of endoscopy is a pre-requisite for all invasive methods and poses difficulties in children as it is a difficult procedure and requires patient's cooperation. For this reason, the non-invasive tests have been commonly used in children, although their accuracy is not very reliable in some cases. Invasive tests may be opted to confirm the diagnosis as and when needed. This review presents the diagnostic tests used to detect H. pylori infection in children.
Collapse
|
2
|
Kabakambira JD, Hategeka C, Page C, Ntirenganya C, Dusabejambo V, Ndoli J, Ngabonziza F, Hale D, Bayingana C, Walker T. Efficacy of Helicobacter pylori eradication regimens in Rwanda: a randomized controlled trial. BMC Gastroenterol 2018; 18:134. [PMID: 30165823 PMCID: PMC6117961 DOI: 10.1186/s12876-018-0863-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 08/20/2018] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Successful H. pylori treatment requires the knowledge of local antimicrobial resistance. Data on the efficacy of H. pylori eradication regimens available in sub-Saharan Africa are scant, hence the optimal treatment is unknown. Our goals were to determine the efficacy of available regimens in Rwanda as well as evaluate the effect of treatment on health-related quality of life (HRQoL) in patients undergoing esophagogastroduodenoscopy. METHODS This is a randomized controlled trial conducted from November 2015 to October 2016 at a tertiary hospital in Rwanda. Enrollees were 299 patients (35% male, age 42 ± 16 years (mean ± SD)) who had a positive modified rapid urease test on endoscopic biopsies. After a fecal antigen test (FAT) and HRQoL assessment by the Short Form Nepean Dyspepsia Index (SF-NDI) questionnaire, patients were randomized 1:1:1:1 to either a triple therapy combining omeprazole, amoxicillin and one of clarithromycin/ciprofloxacin/metronidazole or a quadruple therapy combining omeprazole, amoxicillin, ciprofloxacin and doxycycline. All therapies were given for a duration of 10 days. The outcome measures were the persistence of positive FAT (treatment failure) 4 to 6 weeks after treatment and change in HRQoL scores. RESULTS The treatment success rate was 80% in the total population and 78% in patients with a history of prior triple therapy. Significant improvement in HRQoL in the total group (HRQoL mean scores before and after treatment respectively: 76 ± 11 and 32 ± 11, p < 0.001) and the group with functional dyspepsia (HRQoL mean scores before and after treatment respectively: 73 ± 11 and 30 ± 9, P < 0.001) was observed across all treatment groups. Using clarithromycin based triple therapy (standard of care) as a reference, the group treated with metronidazole had worse HRQoL (p = 0.012) and had a trend towards worse treatment outcome (p = 0.086) compared to the ciprofloxacin based combination therapies. CONCLUSION Clarithromycin and ciprofloxacin based combination therapies are effective and safe to use alternatively for H. pylori eradication and improve HRQoL. Among the regimens studied, metronidazole based triple therapy is likely to be clinically inferior. TRIAL REGISTRATION The clinical trial was retrospectively registered ( PACTR201804003257400 ) with the Pan African Clinical Trial Registry database, on April 6th, 2018 in South Africa.
Collapse
Affiliation(s)
| | - Celestin Hategeka
- Centre for Health Services and Policy Research, School of Population and Public Health, Faculty of Medicine, University of British Columbia, Vancouver, BC Canada
- Collaboration for Outcomes Research and Evaluation, Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC Canada
| | - Cameron Page
- Department of Medicine, University Hospital of Brooklyn, New York, USA
| | | | | | - Jules Ndoli
- Butare University Teaching Hospital (CHUB), Huye, Rwanda
| | | | - DeVon Hale
- Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT USA
| | | | - Tim Walker
- Butare University Teaching Hospital (CHUB), Huye, Rwanda
- School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Newcastle, Australia
| |
Collapse
|
3
|
Best LMJ, Takwoingi Y, Siddique S, Selladurai A, Gandhi A, Low B, Yaghoobi M, Gurusamy KS. Non-invasive diagnostic tests for Helicobacter pylori infection. Cochrane Database Syst Rev 2018; 3:CD012080. [PMID: 29543326 PMCID: PMC6513531 DOI: 10.1002/14651858.cd012080.pub2] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND Helicobacter pylori (H pylori) infection has been implicated in a number of malignancies and non-malignant conditions including peptic ulcers, non-ulcer dyspepsia, recurrent peptic ulcer bleeding, unexplained iron deficiency anaemia, idiopathic thrombocytopaenia purpura, and colorectal adenomas. The confirmatory diagnosis of H pylori is by endoscopic biopsy, followed by histopathological examination using haemotoxylin and eosin (H & E) stain or special stains such as Giemsa stain and Warthin-Starry stain. Special stains are more accurate than H & E stain. There is significant uncertainty about the diagnostic accuracy of non-invasive tests for diagnosis of H pylori. OBJECTIVES To compare the diagnostic accuracy of urea breath test, serology, and stool antigen test, used alone or in combination, for diagnosis of H pylori infection in symptomatic and asymptomatic people, so that eradication therapy for H pylori can be started. SEARCH METHODS We searched MEDLINE, Embase, the Science Citation Index and the National Institute for Health Research Health Technology Assessment Database on 4 March 2016. We screened references in the included studies to identify additional studies. We also conducted citation searches of relevant studies, most recently on 4 December 2016. We did not restrict studies by language or publication status, or whether data were collected prospectively or retrospectively. SELECTION CRITERIA We included diagnostic accuracy studies that evaluated at least one of the index tests (urea breath test using isotopes such as 13C or 14C, serology and stool antigen test) against the reference standard (histopathological examination using H & E stain, special stains or immunohistochemical stain) in people suspected of having H pylori infection. DATA COLLECTION AND ANALYSIS Two review authors independently screened the references to identify relevant studies and independently extracted data. We assessed the methodological quality of studies using the QUADAS-2 tool. We performed meta-analysis by using the hierarchical summary receiver operating characteristic (HSROC) model to estimate and compare SROC curves. Where appropriate, we used bivariate or univariate logistic regression models to estimate summary sensitivities and specificities. MAIN RESULTS We included 101 studies involving 11,003 participants, of which 5839 participants (53.1%) had H pylori infection. The prevalence of H pylori infection in the studies ranged from 15.2% to 94.7%, with a median prevalence of 53.7% (interquartile range 42.0% to 66.5%). Most of the studies (57%) included participants with dyspepsia and 53 studies excluded participants who recently had proton pump inhibitors or antibiotics.There was at least an unclear risk of bias or unclear applicability concern for each study.Of the 101 studies, 15 compared the accuracy of two index tests and two studies compared the accuracy of three index tests. Thirty-four studies (4242 participants) evaluated serology; 29 studies (2988 participants) evaluated stool antigen test; 34 studies (3139 participants) evaluated urea breath test-13C; 21 studies (1810 participants) evaluated urea breath test-14C; and two studies (127 participants) evaluated urea breath test but did not report the isotope used. The thresholds used to define test positivity and the staining techniques used for histopathological examination (reference standard) varied between studies. Due to sparse data for each threshold reported, it was not possible to identify the best threshold for each test.Using data from 99 studies in an indirect test comparison, there was statistical evidence of a difference in diagnostic accuracy between urea breath test-13C, urea breath test-14C, serology and stool antigen test (P = 0.024). The diagnostic odds ratios for urea breath test-13C, urea breath test-14C, serology, and stool antigen test were 153 (95% confidence interval (CI) 73.7 to 316), 105 (95% CI 74.0 to 150), 47.4 (95% CI 25.5 to 88.1) and 45.1 (95% CI 24.2 to 84.1). The sensitivity (95% CI) estimated at a fixed specificity of 0.90 (median from studies across the four tests), was 0.94 (95% CI 0.89 to 0.97) for urea breath test-13C, 0.92 (95% CI 0.89 to 0.94) for urea breath test-14C, 0.84 (95% CI 0.74 to 0.91) for serology, and 0.83 (95% CI 0.73 to 0.90) for stool antigen test. This implies that on average, given a specificity of 0.90 and prevalence of 53.7% (median specificity and prevalence in the studies), out of 1000 people tested for H pylori infection, there will be 46 false positives (people without H pylori infection who will be diagnosed as having H pylori infection). In this hypothetical cohort, urea breath test-13C, urea breath test-14C, serology, and stool antigen test will give 30 (95% CI 15 to 58), 42 (95% CI 30 to 58), 86 (95% CI 50 to 140), and 89 (95% CI 52 to 146) false negatives respectively (people with H pylori infection for whom the diagnosis of H pylori will be missed).Direct comparisons were based on few head-to-head studies. The ratios of diagnostic odds ratios (DORs) were 0.68 (95% CI 0.12 to 3.70; P = 0.56) for urea breath test-13C versus serology (seven studies), and 0.88 (95% CI 0.14 to 5.56; P = 0.84) for urea breath test-13C versus stool antigen test (seven studies). The 95% CIs of these estimates overlap with those of the ratios of DORs from the indirect comparison. Data were limited or unavailable for meta-analysis of other direct comparisons. AUTHORS' CONCLUSIONS In people without a history of gastrectomy and those who have not recently had antibiotics or proton ,pump inhibitors, urea breath tests had high diagnostic accuracy while serology and stool antigen tests were less accurate for diagnosis of Helicobacter pylori infection.This is based on an indirect test comparison (with potential for bias due to confounding), as evidence from direct comparisons was limited or unavailable. The thresholds used for these tests were highly variable and we were unable to identify specific thresholds that might be useful in clinical practice.We need further comparative studies of high methodological quality to obtain more reliable evidence of relative accuracy between the tests. Such studies should be conducted prospectively in a representative spectrum of participants and clearly reported to ensure low risk of bias. Most importantly, studies should prespecify and clearly report thresholds used, and should avoid inappropriate exclusions.
Collapse
Affiliation(s)
- Lawrence MJ Best
- Royal Free Campus, UCL Medical SchoolDepartment of SurgeryRowland Hill StreetLondonUKNW32PF
| | - Yemisi Takwoingi
- University of BirminghamInstitute of Applied Health ResearchEdgbastonBirminghamUKB15 2TT
| | | | | | | | | | - Mohammad Yaghoobi
- McMaster University and McMaster University Health Sciences CentreDivision of Gastroenterology1200 Main Street WestHamiltonONCanada
| | | | | |
Collapse
|
4
|
Lario S, Ramírez-Lázaro MJ, Montserrat A, Quílez ME, Junquera F, Martínez-Bauer E, Sanfeliu I, Brullet E, Campo R, Segura F, Calvet X. Diagnostic accuracy of three monoclonal stool tests in a large series of untreated Helicobacter pylori infected patients. Clin Biochem 2016; 49:682-687. [PMID: 26794025 DOI: 10.1016/j.clinbiochem.2016.01.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 01/13/2016] [Accepted: 01/16/2016] [Indexed: 02/08/2023]
Abstract
OBJECTIVES Immunochromatographic tests need to be improved in order to enhance their reliability. Recently, several new kits have appeared on the market. The objective was to evaluate the diagnostic accuracy of three monoclonal rapid stool tests - the new Uni-Gold™ H.pylori Antigen (Trinity Biotech, Ireland), the RAPID Hp StAR (Oxoid Ltd., UK) and the ImmunoCard STAT! HpSA (Meridian Diagnostics, USA) - for detecting H. pylori infection prior to eradication treatment. DESIGN AND METHODS Diagnostic accuracy (sensitivity and specificity) and reliability (concordance between observers) were evaluated in 250 untreated consecutive dyspeptic patients. The gold standard for diagnosing H. pylori infection was defined as the concordance of two or more of rapid urease test (RUT), histopathology and urease breath test (UBT) or positive culture in isolation. Readings of immunochromatographic tests were performed by two different observers. Sensitivity, specificity, positive and negative predictive values and 95% confidence intervals were calculated. Sensitivity and specificity were compared using the McNemar test. RESULTS The three tests showed a good correlation, with Kappa values>0.9. RAPID Hp StAR had a sensitivity of 91%-92% and a specificity ranging from 77% to 85%. Its sensitivity was higher than that of Uni-Gold™ H.pylori Antigen and ImmunoCard STAT! HpSA (p<0.01). Uni-Gold™ H.pylori Antigen kit showed a sensitivity of 83%, similar to ImmunoCard STAT! HpSA. Specificity of Uni-Gold™ H.pylori Antigen approached 90% (87-89%) and was superior to that of RAPID Hp StAR (p<0.01). CONCLUSIONS Uni-Gold™ H.pylori Antigen and ImmunoCard STAT! HpSA present similar levels of diagnostic accuracy. RAPID Hp StAR was the most sensitive but less reliable of the three immunochromatographic stool tests. None are as accurate and reliable as UBT, RUT and histology.
Collapse
Affiliation(s)
- Sergio Lario
- Digestive Diseases Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain; Fundació Parc Taulí, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain
| | - María José Ramírez-Lázaro
- Digestive Diseases Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Antònia Montserrat
- Digestive Diseases Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - María Elisa Quílez
- Digestive Diseases Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Fundació Parc Taulí, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain
| | - Félix Junquera
- Digestive Diseases Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Eva Martínez-Bauer
- Digestive Diseases Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Isabel Sanfeliu
- Microbiology Laboratory, UDIAT-CD, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Spanish Network for Research in Infectious Diseases (REIPI RD06/0018), Spain
| | - Enric Brullet
- Digestive Diseases Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Rafael Campo
- Digestive Diseases Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Ferran Segura
- Infectious Disease Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Spanish Network for Research in Infectious Diseases (REIPI RD06/0018), Spain
| | - Xavier Calvet
- Digestive Diseases Service, Hospital de Sabadell, Corporació Sanitària Parc Taulí, Institut Universitari Parc Taulí-UAB, Sabadell, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain.
| |
Collapse
|
5
|
Korkmaz H, Findik D, Ugurluoglu C, Terzi Y. Reliability of stool antigen tests: investigation of the diagnostic value of a new immunochromatographic Helicobacter pylori approach in dyspeptic patients. Asian Pac J Cancer Prev 2015; 16:657-60. [PMID: 25684503 DOI: 10.7314/apjcp.2015.16.2.657] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A diagnosis of H. pylori infection can be made by invasive or non-invasive methods. Several noninvasive diagnostic tests based on the detection of H. pylori stool antigen (HpSA) have been developed. The Genx H. pylori stool antigen card test is a new rapid, non-invasive test that is based on monoclonal immunochromatographic assay. The aim of this study was to determine its sensitivity, specificity, and diagnostic accuracy for diagnosing H. pylori infection in adult patients. MATERIALS AND METHODS A total of 162 patients were included in the study. A gastric biopsy was collected for histopathology and rapid urease testing. Stool specimens for HpSA testing were also collected. Patients were considered H. pylori positive if two invasive tests (histological and rapid urease tests) were positive. RESULTS Using the reference test, 50.6% of the samples were positive for H. pylori infection. The Genx H. pylori antigen test was positive in 19.7% of patients. The sensitivity, specificity, positive predictive value, negative predictive value, and diagnostic accuracy of the Genx H. pylori antigen test were 51.6%, 96.0%, 88.8%, 76.1%, and 79.0%, respectively. CONCLUSIONS The Genx H. pylori stool antigen card test is a new non-invasive method that is fast and simple to perform but provides less reliable results.
Collapse
Affiliation(s)
- Huseyin Korkmaz
- Department of Internal Medicine, Division of Gastroenterology, Selcuk University, Selcuklu, Turkey E-mail :
| | | | | | | |
Collapse
|
6
|
Lin Z, Cheng S, Yan Q, Liu X, Zheng W, Hu X, Li J, Zhang J, Xiang T, Zheng J, Zhang J. Development of an immunochromatographic lateral flow device for rapid detection of Helicobacter pylori stool antigen. Clin Biochem 2015; 48:1298-303. [PMID: 26256542 DOI: 10.1016/j.clinbiochem.2015.08.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 07/14/2015] [Accepted: 08/04/2015] [Indexed: 01/27/2023]
Abstract
OBJECTIVE Helicobacter pylori stool antigen (HpSA) test is a convenient and reliable non-invasive diagnosis for H. pylori infection. The aim of this study is to develop an immunochromatographic testing device for rapid detection of HpSA among Chinese patients. DESIGN AND METHODS Monoclonal antibodies (McAb) targeting H. pylori were developed by conventional methods and paired by sandwich ELISA. The lateral flow device (LFD) was prepared using the selected McAb pair. A total of 867 clinically separated bacterial strains, including 56H. pylori strains, were employed to test the sensitivity and specificity. Subsequently, the LFD was used to test 1200 human fecal samples, with a commercial HpSA testing device as comparison. RESULTS Two McAb pairs targeting H. pylori, DF2a/EE10b and IH10b/EE10b, were developed and proven to be of high specificity and sensitivity. After testing the cultures of 56 clinically separated H. pylori strains, the final LFD product was prepared using the mixture of DF2a and IH10b as capture antibodies and EE10b as the detection antibody. The testing threshold for H. pylori culture was 1.0 × 10(4)cfu/mL. The sensitivity and specificity were both 100% for the 867 tested bacterial cultures. The testing results of 1200 fecal samples showed that the positive and negative agreement rates between the homemade LFD and the commercial testing device were 99.75% and 99.87%, respectively. CONCLUSION Our homemade HpSA LFD can be a very promising testing device for rapid diagnosis and epidemic screening of H. pylori infection among Chinese patients.
Collapse
Affiliation(s)
- Zhen Lin
- Key Laboratory of Molecular Biology on Infectious Diseases, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong District, Chongqing 400016, PR China
| | - Shiliang Cheng
- Clinical Laboratory, Shandong Jiaotong Hospital, 11 Wuyinshan Road, Tianqiao District, Ji'nan, Shandong Province 250031, PR China
| | - Qin Yan
- Artron BioResearch Inc., 3938 North Fraser Way, Burnaby, BC V5J 5H6, Canada
| | - Xinfeng Liu
- Clinical Laboratory, Shandong Jiaotong Hospital, 11 Wuyinshan Road, Tianqiao District, Ji'nan, Shandong Province 250031, PR China
| | - Wen Zheng
- Clinical Laboratory, Shandong Jiaotong Hospital, 11 Wuyinshan Road, Tianqiao District, Ji'nan, Shandong Province 250031, PR China
| | - Xiaomei Hu
- The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, PR China
| | - Jie Li
- The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, PR China
| | - Jun Zhang
- Artron BioResearch Inc., 3938 North Fraser Way, Burnaby, BC V5J 5H6, Canada; Jinan Kangbo Biotechnology. 2711 Ying Xiu Road, Ji'nan, Shandong Province 250101, PR China
| | - Tingxiu Xiang
- Artron BioResearch Inc., 3938 North Fraser Way, Burnaby, BC V5J 5H6, Canada
| | - Jian Zheng
- Jinan Kangbo Biotechnology. 2711 Ying Xiu Road, Ji'nan, Shandong Province 250101, PR China
| | - Juan Zhang
- The Blood Transfusion Department, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, PR China..
| |
Collapse
|
7
|
Ertem D. Clinical practice: Helicobacter pylori infection in childhood. Eur J Pediatr 2013; 172:1427-34. [PMID: 23015042 DOI: 10.1007/s00431-012-1823-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 08/30/2012] [Indexed: 12/11/2022]
Abstract
Helicobacter pylori infection is recognised as a cause of gastritis and peptic ulcer disease (PUD) and usually acquired during the first years of life. While there is a decline in the prevalence of H. pylori infection in northern and western European countries, the infection is still common in southern and eastern parts of Europe and Asia. Symptoms of H. pylori-related PUD are nonspecific in children and may include epigastric pain, nausea and/or vomiting, anorexia, iron deficiency anaemia and hematemesis. Besides, only a small proportion of children develop symptoms and clinically relevant gastrointestinal disease. H. pylori infection can be diagnosed either by invasive tests requiring endoscopy and biopsy or non-invasive tests including the (13)C-urea breath test, detection of H. pylori antigen in stool and detection of antibodies in serum, urine and saliva. The aim of treatment is at least 90 % eradication rate of the bacteria, and a combination of two antibiotics plus a proton pump inhibitor has been recommended as first-line treatment. However, frequent use of antibiotics during childhood is associated with a decline in eradication rates and the search for new treatment strategies as well. This is an overview of the latest knowledge and evidence-based guidelines regarding clinical presentation, diagnosis and treatment of H. pylori infection in childhood.
Collapse
Affiliation(s)
- Deniz Ertem
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Marmara University School of Medicine, Fevzi Çakmak Mah. Mimar Sinan Cad. No 41, Pendik, İstanbul, Turkey,
| |
Collapse
|
8
|
Korkmaz H, Kesli R, Karabagli P, Terzi Y. Comparison of the diagnostic accuracy of five different stool antigen tests for the diagnosis of Helicobacter pylori infection. Helicobacter 2013; 18:384-91. [PMID: 23551920 DOI: 10.1111/hel.12053] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Several noninvasive diagnostic tests based on the detection of Helicobacter pylori stool antigen (HpSA) have been developed. The aim of the study was to compare the diagnostic accuracy of 5 HpSA tests-2 monoclonal enzyme immunoassay tests (EIAs: the Premier Platinum HpSA Plus test and Helicobacter pylori Antigen (Hp Ag) test) and 3 rapid immunochromatographic assay (ICA) tests (the ImmunoCard STAT! HpSA test, one step HpSA test, and H. pylori fecal antigen test)--for diagnosing H. pylori infection in adult patients with dyspeptic symptoms before eradication therapy. MATERIALS AND METHODS A total of 198 patients with dyspeptic symptoms were included in the study. A gastric biopsy was collected for histopathology and rapid urease testing. Stool specimens for HpSA testing were also collected. Patients were considered H. pylori positive if two invasive tests (histological and rapid urease tests) were positive. RESULTS The sensitivity and specificity were 92.2% and 94.4%, respectively, for the Premier Platinum HpSA Plus test; 48.9% and 88.9%, respectively, for the HP Ag test; 86.7% and 88.9, respectively, for the One Step HpSA test; 68.9% and 92.6%, respectively, for the ImmunoCard STAT! HpSA test; and 78.9% and 87%, respectively, for the H. Pylori fecal antigen test. CONCLUSIONS The Premier Platinum HpSA Plus EIA test was determined to be the most accurate stool test for diagnosing H. pylori infections in adult dyspeptic patients. The currently available ICA-based tests are fast and easy to use but provide less reliable results.
Collapse
Affiliation(s)
- Huseyin Korkmaz
- Faculty of Medicine, Division of Gastroenterology, Department of Internal Medicine, Selcuk University, Konya, Turkey
| | | | | | | |
Collapse
|
9
|
Lee YC, Tseng PH, Liou JM, Chen MJ, Chen CC, Tu CH, Chiang TH, Chiu HM, Lai CF, Ho JC, Wu MS. Performance of a one-step fecal sample-based test for diagnosis of Helicobacter pylori infection in primary care and mass screening settings. J Formos Med Assoc 2012; 113:899-907. [PMID: 25530066 DOI: 10.1016/j.jfma.2012.05.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 04/21/2012] [Accepted: 05/21/2012] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND/PURPOSE An alternative screening test is needed to efficiently eradicate Helicobacter pylori from a population with prevalent upper gastrointestinal lesions. We evaluated the performance of a new one-step fecal test for H. pylori for diagnosis of H. pylori infection in Taiwan. METHODS We developed a fecal test to detect H. pylori based on the immunochronomatographic assay and a mixture of monoclonal antibodies. We first recruited symptomatic patients from the primary care setting to evaluate fecal test performance using a reference standard consisting of (13)C urea breath test, rapid urease test, and histology. We also compared the performance of the fecal test with that of others. Next, we recruited asymptomatic participants from the mass screening setting to evaluate population attendance for the fecal test and compared its performance with that of (13)C urea breath test. RESULTS In the primary care setting, 117 patients were recruited; H. pylori infection was confirmed in 58 (49.6%). Fecal test sensitivity, specificity, positive and negative predictive values, and accuracy were 88.0% [95% confidence interval (CI): 79.6-96.4%], 100%, 100%, 89.4% (95% CI, 82.0-96.8%), and 94% (95% CI, 89.7-98.3%), respectively. Fecal test specificity and positive predictive value were significantly higher than those of the serological test, whereas the sensitivity and negative predictive value were lower than those of the (13)C urea breath test (p < 0.05). In the mass screening setting, 2720 of 3520 invited individuals participated (77.3%; 95% CI, 76-78.7%); 649 (23.9%) showed positive results. Concordance rate and kappa statistic between the fecal test and (13)C urea breath test were 91.7% (563/614; 95% CI, 89.9-94.1%) and 0.78 (95% CI, 0.73-0.84), respectively. CONCLUSION Given the acceptable sensitivity, excellent specificity, and high participation rate to screening, the one-step H. pylori stool antigen test is feasible for wide application in the community.
Collapse
Affiliation(s)
- Yi-Chia Lee
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; Division of Biostatistics, Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Ping-Huei Tseng
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Jyh-Ming Liou
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Mei-Jyh Chen
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Integrated Diagnostic & Therapeutics, National Taiwan University Hospital, Taipei, Taiwan
| | - Chien-Chuan Chen
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chia-Hung Tu
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Tsung-Hsien Chiang
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Integrated Diagnostic & Therapeutics, National Taiwan University Hospital, Taipei, Taiwan
| | - Han-Mo Chiu
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chien-Fang Lai
- Research and Development, Firstep Bioresearch Incorporation, Tainan, Taiwan
| | - Jhon-Chun Ho
- Research and Development, Firstep Bioresearch Incorporation, Tainan, Taiwan
| | - Ming-Shiang Wu
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Primary Care Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.
| |
Collapse
|
10
|
Abstract
BACKGROUND Studies comparing new monoclonal fecal tests for evaluating cure of Helicobacter pylori infection after treatment are scarce. The objective was to compare the diagnostic accuracy of three monoclonal stool tests: two rapid in-office tools -RAPID Hp StAR and ImmunoCard STAT! HpSA - and an EIA test - Amplified IDEIA Hp StAR. MATERIALS AND METHODS Diagnostic reliability of the three tests was evaluated in 88 patients at least 8 weeks after H. pylori treatment. Readings of immunochromatographic tests were performed by two different observers. Sensitivity, specificity, positive and negative predictive values and 95% confidence intervals were calculated. RESULTS All tests presented similar performance for post-eradication testing. Sensitivity for detecting persistent infection was 100% for both Amplified IDEIA and RAPID Hp StAR and 90% for ImmunoCard STAT! HpSA. Respective specificities were 94.9%, 92.3-93.6% and 94.9%. Negative predictive values were very high (100%, 100% and 98.7% respectively). But positive predictive values were lower, ranging from 62.5 to 71.4%. CONCLUSION All monoclonal fecal tests in this series presented similar performance in the post-treatment setting. A negative test after treatment adequately predicted cure of the infection. However, nearly a third of tests were false positive, showing a poor predictive yield for persistent infection.
Collapse
|
11
|
Blanco S, Forné M, Lacoma A, Prat C, Cuesta MA, Latorre I, Viver JM, Fernández G, Molinos S, Domínguez J. Comparison of stool antigen immunoassay methods for detecting Helicobacter pylori infection before and after eradication treatment. Diagn Microbiol Infect Dis 2008; 61:150-5. [DOI: 10.1016/j.diagmicrobio.2008.01.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Revised: 12/20/2007] [Accepted: 01/04/2008] [Indexed: 12/26/2022]
|
12
|
Trevisani L, Cifalà V, Fusetti N, Gilli G, Tombesi P, Torchiaro M, Boccia S, Abbasciano V. Diagnostic accuracy of a rapid fecal test to confirm H pylori eradication after therapy: Prospective comparison with a laboratory stool test. World J Gastroenterol 2007; 13:4484-8. [PMID: 17724805 PMCID: PMC4611582 DOI: 10.3748/wjg.v13.i33.4484] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the clinical performances of rapid stool test (ImmunoCard STAT HpSA, Meridian Diagnostic Inc.) in the evaluation of eradication therapy of H pylori and to compare it with a well-known and validated laboratory stool test (Amplified IDEA Hp StAR, Dako).
METHODS: Stool samples of 122 patients were evaluated after eradication therapy of H pylori. H pylori status was assessed by 13C-urea breath test (UBT). Stool specimens were tested using either the rapid immunoassay kit or the laboratory immunoassay kit.
RESULTS: Forty-three patients were infected and 79 non-infected. Sensitivity and specificity of ImmunoCard STAT and Hp StAR were 58.14% and 76.4%, and 97.47% and 98.73%, respectively (P > 0.05). Overall agreement between the two tests was 92.6% (113 of 122 cases).
CONCLUSION: ImmunoCard STAT seems to have rather low performances, and it cannot be regarded as a reliable tool in the post-treatment setting. Also Hp StAR cannot be recommended to confirm H pylori eradication after treatment.
Collapse
Affiliation(s)
- Lucio Trevisani
- Centro di Endoscopia Digestiva, Azienda Ospedaliero-Universitaria Arcispedale S Anna, C so Giovecca 203, Ferrara, Italy.
| | | | | | | | | | | | | | | |
Collapse
|