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Rovaris GZ, Back JV, Ronchi-Colombo MP, Rosa VS, Cardoso MCB, Berger EC. ASSESSMENT OF THE ACCURACY OF THE RAPID TEST FOR THE DIAGNOSIS OF HELICOBACTER PYLORI IN PATIENTS THAT DIDN'T UNDERGO PREVIOUS ERADICATION THERAPY AND WHO WENT THROUGH ENDOSCOPY. ARQUIVOS DE GASTROENTEROLOGIA 2024; 61:e23136. [PMID: 38451669 DOI: 10.1590/s0004-2803.24612023-136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 10/18/2023] [Indexed: 03/08/2024]
Abstract
BACKGROUND Helicobacter pylori infection is widely spread globally and is known to cause potentially serious diseases. Several diagnostic methods exist to identify and treat carriers of this bacterium. Serological tests for the diagnosis of infection are based on the detection of antibodies immunoglobulin G against H. pylori, a non-invasive, inexpensive, and easy-to-perform option. OBJECTIVE This research aims to ascertain the accuracy of an immunochromatographic serological test to verify the feasibility of using this method in patients who have not undergone previous eradication therapy. METHODS Rapid tests and questionnaires were applied to 53 patients that underwent upper digestive endoscopy with research for H. pylori between the period of September and October 2021. The results were compared with histopathology. RESULTS In the rapid tests, seven positive and 46 negative results were obtained. When compared with the gold stan-dard, the following values were described: sensitivity 54.5%, specificity 97.6%, positive predictive value 85.7%, and negative predictive value 89.1%. CONCLUSION In the present study, the immunochromatographic serological tests had an accuracy close to the values found in other similar studies. Therefore, it may be concluded that the rapid serological test remains a reasonable choice for screening large populations due to its low cost and ease of application, especially in those individuals who have not undergone previous treatment. BACKGROUND • Helicobacter pylori infection can cause potentially serious diseases. BACKGROUND • Serological tests are based on the detection of antibodies immunoglobulin G against Helicobacter pylori. BACKGROUND • Serological tests for the diagnosis of Helicobacter pylori infection are low cost tools and have easy application. BACKGROUND • Rapid serological test is a reasonable choice for screening large populations.
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Affiliation(s)
- Gianluca Z Rovaris
- Curso de Medicina Universidade do Extremo Sul Catarinense, Criciúma, SC, Brasil
| | - João V Back
- Curso de Medicina Universidade do Extremo Sul Catarinense, Criciúma, SC, Brasil
| | | | - Vitória S Rosa
- Curso de Medicina Universidade do Extremo Sul Catarinense, Criciúma, SC, Brasil
| | - Manoel C B Cardoso
- Universidade da Região de Joinville, Joinville, SC, Brasil
- Hospital Dia Clinigastro, Criciúma, SC, Brasil
| | - Emilio C Berger
- Programa de Pós-Graduação em Ciências da Saúde, Criciúma, SC, Brasil
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Epidemiological and Clinical-Pathological Aspects of Helicobacter pylori Infection in Brazilian Children and Adults. Gastroenterol Res Pract 2018; 2018:8454125. [PMID: 30254670 PMCID: PMC6142780 DOI: 10.1155/2018/8454125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 06/10/2018] [Indexed: 12/11/2022] Open
Abstract
Aim To evaluate the prevalence and risk factors of H. pylori infection in the pediatric and adult population seen at a public hospital in São José do Rio Preto, SP, Brazil. Methods This is a retrospective study that evaluated 2406 medical records of children, adolescents, and adults with dyspeptic symptoms who underwent upper gastrointestinal endoscopy. H. pylori diagnosis and demographic and clinical-pathological features were recorded. Results A total of 852 subjects were H. pylori positive, with an overall prevalence of infection of 35.4%, occurring mainly in adults over 40 years of age, and a 24.7% prevalence considering only children and adolescents. No association was observed between H. pylori infection and risk factors. However, the H. pylori positive individuals showed a higher frequency of pangastritis (p < 0.01), severe lesions (p = <0.001), and erosive lesions (p = 0.04). The bacterium was eradicated in 83.5% (127) of the patients who received the standard therapy. Conclusions The prevalence of H. pylori detected in a public service in São José do Rio Preto, SP, Brazil, is as expected for developed countries, showing growing rates with increasing age. As H. pylori infection occurs during childhood, screening programs for detection and prevention in the pediatric population are important to reduce the prevalence of this infection in adults.
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Ribeiro ICS, Kubrusly LF, Nassif PAN, Ribeiro PFS, Veras RDO, Neppel A. RELATIONSHIP BETWEEN THE PRESENCE OF HELICOBACTER PYLORI WITH INFLAMMATORY ENDOSCOPIC CHANGES IN GASTRODUODENAL MUCOSA. ABCD-ARQUIVOS BRASILEIROS DE CIRURGIA DIGESTIVA 2016; 29:142-145. [PMID: 27759774 PMCID: PMC5074662 DOI: 10.1590/0102-6720201600030004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 04/14/2016] [Indexed: 01/16/2023]
Abstract
Background: The influence of Helicobacter pylori (HP) in inflammatory disorders of the
digestive mucosa has been the subject of several studies since socioeconomic,
personal and environmental factors were implicated in the bacteria transmission.
Aim: To correlate the inflammatory endoscopic findings with HP infection and the onset
of mucosal diseases mucous of the upper digestive tract. Method: Comparative observational study, in which were collected data from 2247 patients
who underwent upper endoscopy and biopsies for HP with urease test. The patients
were divided into two groups: HP+ and HP- (control) in which endoscopic findings
were observed for the following changes: esophagitis, esophageal ulcer, gastritis,
erosive gastritis, gastric ulcer, bulboduodenitis, bulbar ulcer and without
disease. Results: As for esophagitis, there was little disparity in the distribution favorable to
HP+ group (HP+ =67.11% and HP- =69.89%) and esophageal ulcer (HP+ =0% and HP- =0,
21%). Gastritis was favorable to HP- group (HP+ =78.34% and HP- =73.63%), as well
as erosive gastritis (HP+ = 67,11% and HP- = 64,55%), in bulboduodenitis (HP+
=1,87% and HP- 1,23%), in gastric ulcer (HP+ =2,14% and HP- =2,03%) and in the
absence of alterations in the HP+ group (4.81%) with the HP- control group
(6,30%), in which there was little disproportion in favor of HP- group, but
without statistical significance. As for the bulbar ulcer (HP +=10.16% and HP-
=4.48%), there was statistically significant (p=0.00001). Conclusion: There is no difference between HP+ and HP- groups in inflammatory changes in
endoscopic gastroduodenal mucosa, except for the relationship between HP and
bulbar ulcer.
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Affiliation(s)
- Irma Cláudia Saboya Ribeiro
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil.,Gastrointestinal Endoscopy Service, 9 of July Hospital, São Paulo, SP, Brazil
| | - Luiz Fernandao Kubrusly
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil
| | - Paulo Afonso Nunes Nassif
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil
| | | | - Rodrigo de Oliveira Veras
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil
| | - Aline Neppel
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil
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Rossi AFT, Cadamuro ACT, Biselli-Périco JM, Leite KRM, Severino FE, Reis PP, Cordeiro JA, Silva AE. Interaction between inflammatory mediators and miRNAs in Helicobacter pylori infection. Cell Microbiol 2016; 18:1444-58. [PMID: 26945693 PMCID: PMC5074252 DOI: 10.1111/cmi.12587] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 02/12/2016] [Accepted: 02/29/2016] [Indexed: 12/13/2022]
Abstract
Helicobacter pylori cause chronic inflammation favouring gastric carcinogenesis, and its eradication may prevent malignant transformation. We evaluated whether H. pylori infection and its eradication modify the expression of inflammatory mediators in patients with chronic gastritis. Furthermore, we assessed whether microRNAs modulate inflammatory pathways induced by H. pylori and identified miRNA–gene interaction networks. mRNA and protein expression of TNFA, IL6, IL1B, IL12A, IL2 and TGFBRII and miRNAs miR‐103a‐3p, miR‐181c‐5p, miR‐370‐3p, miR‐375 and miR‐223‐3p were evaluated in tissue samples from 20 patients with chronic gastritis H. pylori negative (Hp−) and 31 H. pylori positive (Hp+), before and three months after bacterium eradication therapy, in comparison with a pool of Hp− normal gastric mucosa. Our results showed that H. pylori infection leads to up‐regulation of TNFA, IL6, IL12A and IL2 and down‐regulation of miRNAs. Bacterium eradication reduces the expression of TNFA and IL6 and up‐regulates TGFBRII and all investigated miRNAs, except miR‐223‐3p. Moreover, transcriptional profiles of inflammatory mediators and miRNAs after eradication are different from the non‐infected group. Deregulated miRNA–mRNA interaction networks were observed in the Hp+ group before and after eradication. Therefore, miRNAs modulated cytokine expression in the presence of H. pylori and after its eradication, suggesting that miRNAs participate in the pathological process triggered by H. pylori in the gastric mucosa.
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Affiliation(s)
- Ana Flávia Teixeira Rossi
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil
| | - Aline Cristina Targa Cadamuro
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil
| | - Joice Matos Biselli-Périco
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil
| | - Kátia Ramos Moreira Leite
- USP, São Paulo University, Faculty of Medicine, Department of Surgery, Avenida Dr. Arnaldo, 455, São Paulo, SP, Brazil
| | - Fábio Eduardo Severino
- UNESP, São Paulo State University, Faculty of Medicine, Department of Surgery and Orthopedics, Avenida Prof. Montenegro, Botucatu, SP, Brazil
| | - Patricia P Reis
- UNESP, São Paulo State University, Faculty of Medicine, Department of Surgery and Orthopedics, Avenida Prof. Montenegro, Botucatu, SP, Brazil
| | - José Antonio Cordeiro
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil
| | - Ana Elizabete Silva
- UNESP, São Paulo State University, Department of Biology, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP, Brazil.
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Veiga N, Pereira C, Resende C, Amaral O, Ferreira M, Nelas P, Chaves C, Duarte J, Cirnes L, Machado JC, Ferreira P, Correia IJ. Oral and gastric Helicobacter pylori: effects and associations. PLoS One 2015; 10:e0126923. [PMID: 26010595 PMCID: PMC4444322 DOI: 10.1371/journal.pone.0126923] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 04/09/2015] [Indexed: 12/25/2022] Open
Abstract
Introduction This study consisted in the comparison of the prevalence of Helicobacter pylori (H. pylori) present in the stomach and in saliva of a sample of Portuguese adolescents and the assessment of the association between H. pylori infection with socio-demographic variables and prevalence of dental caries. Materials and Methods A cross-sectional study was designed including a sample of 447 adolescents aged 12 to 19 years old, attending a public school in Sátão, Portugal. A questionnaire about socio-demographic variables and oral health behaviors was applied. Gastric H. pylori infection was determined using the urease breath test (UBT). Saliva collection was obtained and DNA was extracted by Polymerase Chain Reaction (PCR) in order to detect the presence of oral H. pylori. Results The prevalence of gastric H. pylori detected by UBT was 35.9%. Within the adolescents with a gastric UBT positive, only 1.9% were positive for oral H. pylori. The presence of gastric H. pylori was found to be associated with age (>15years, Odds ratio (OR)=1.64,95%CI=1.08-2.52), residence area (urban,OR=1.48,95%CI=1.03-2.29) and parents´ professional situation (unemployed,OR=1.22,95%CI=1.02-1.23). Among those with detected dental caries during the intra-oral observation, 37.4% were positive for gastric H. pylori and 40.2% negative for the same bacterial strain (p=0.3). Conclusions The oral cavity cannot be considered a reservoir for infection of H. pylori. Gastric H. pylori infection was found to be associated with socio-demographic variables such as age, residence area and socioeconomic status.
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Affiliation(s)
- Nélio Veiga
- Health Sciences Research Centre, Health Sciences Faculty, Beira Interior University, Covilhã, Portugal
- Research Centre for Education, Technology and Health Studies, Polytechnic Institute of Viseu, Viseu, Portugal
- Chemical Process Engineering and Forest Products Research Centre, Chemical Engineering Department, University of Coimbra, Coimbra, Portugal
- Health Sciences Department, Portuguese Catholic University, Viseu, Portugal
- * E-mail:
| | - Carlos Pereira
- Research Centre for Education, Technology and Health Studies, Polytechnic Institute of Viseu, Viseu, Portugal
| | - Carlos Resende
- Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal
| | - Odete Amaral
- Research Centre for Education, Technology and Health Studies, Polytechnic Institute of Viseu, Viseu, Portugal
| | - Manuela Ferreira
- Research Centre for Education, Technology and Health Studies, Polytechnic Institute of Viseu, Viseu, Portugal
| | - Paula Nelas
- Research Centre for Education, Technology and Health Studies, Polytechnic Institute of Viseu, Viseu, Portugal
| | - Claudia Chaves
- Research Centre for Education, Technology and Health Studies, Polytechnic Institute of Viseu, Viseu, Portugal
| | - João Duarte
- Research Centre for Education, Technology and Health Studies, Polytechnic Institute of Viseu, Viseu, Portugal
| | - Luis Cirnes
- Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal
| | - José Carlos Machado
- Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal
| | - Paula Ferreira
- Chemical Process Engineering and Forest Products Research Centre, Chemical Engineering Department, University of Coimbra, Coimbra, Portugal
| | - Ilídio J. Correia
- Health Sciences Research Centre, Health Sciences Faculty, Beira Interior University, Covilhã, Portugal
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Ddine LC, Ddine CC, Rodrigues CCR, Kirsten VR, Colpo E. Factors associated with chronic gastritis in patients with presence and absence of Helicobacter pylori. ABCD-ARQUIVOS BRASILEIROS DE CIRURGIA DIGESTIVA 2013; 25:96-100. [PMID: 23381751 DOI: 10.1590/s0102-67202012000200007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 02/16/2012] [Indexed: 11/22/2022]
Abstract
BACKGROUND Chronic gastritis is an inflammation of the stomach mucosa, which is considered its main etiological factor the Helicobacter pylori. AIM To observe the differences in patients with chronic gastritis as well as the presence and absence of H. pylori, to obtain a better understanding of the etiological factors, clinical, dietary and lifestyle habits and associated diseases. METHODS This was a descriptive study, retrospective medical records of patients with chronic gastritis treated as outpatients. Endoscopy and research of H. pylori was used in the diagnosis of chronic gastritis. The survey was conducted through a questionnaire to ascertain the risk factors for chronic gastritis and the clinical manifestations of disease, dietary and lifestyle habits, family history of the disease, weight changes and medications. For statistical analysis was used Spearman coefficient. Data were considered statistically significant p<0.05. RESULTS Of the 94 patients evaluated were symptomatic with heartburn, belching, epigastric pain, fullness and nausea. In 56.6% (n = 54) of individuals was detected the presence of bacteria and in 43.6% (n = 40) was not found any specific etiologic factor. Was performed chi-square statistical test of clinical manifestations and factors such as stress and anxiety, leading to positive correlation. It became evident that the risk factors for disease are diverse, including the use of drugs, alcoholism, eating quickly, talking during meals, with significant relation to abdominal distension and reflux. The patients with the bacteria, had a higher risk of experiencing these symptoms. CONCLUSION Various etiological factors in eating habits and lifestyle, as smoking, alcoholism, anxiety, stress, associated diseases and inadequate nutrition, interact to the onset of clinical manifestations, and the presence and absence of H. pylori did not show significant changes in patient clinical status.
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Barile KADS, Silva ALDCD, Xavier JN, Assumpção MB, Corvelo TCDO. Characterization of 23S rRNA domain V mutations in gastric biopsy patients from the eastern Amazon. Mem Inst Oswaldo Cruz 2010; 105:314-7. [PMID: 20512246 DOI: 10.1590/s0074-02762010000300012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Accepted: 03/05/2010] [Indexed: 01/25/2023] Open
Abstract
Resistance of Helicobacter pylori to clarithromycin is characterised by simple point mutations in the 23S ribosomal RNA (rRNA) gene and is responsible for the majority of cases of failure to eradicate this bacterium. In this paper, we characterised the variability of the 23S rRNA gene in biopsies of patients with gastric pathologies in the eastern Amazon (Northern Region of Brazil) using PCR and sequencing. A total of 49 sequences of H. pylori strains were analysed and of those, 75.6% presented nucleotide substitutions: A2142G (3.3%), T2182C (12.9%), G2224A (6.45%), T2215C (61.3%), A2192G (3.3%), G2204C (6.4%) and T2221C (6.4%). Of the mutations identified, four are known mutations related to cases of resistance and 16.1% are not yet described, revealing a high prevalence of mutations in the H. pylori 23S rRNA gene among the strains circulating in the in the eastern Amazon. The high prevalence in individuals with gastric pathologies in the Northern Region of Brazil demonstrates the need for characterising the profile of these strains to provide correct therapy for patients, considering that mutations in this gene are normally associated with resistance to the primary medication used in controlling H. pylori infection.
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Assumpção MB, Martins LC, Melo Barbosa HP, Barile KADS, Almeida SSD, Assumpção PP, Corvelo TCDO. Helicobacter pylori in dental plaque and stomach of patients from Northern Brazil. World J Gastroenterol 2010; 16:3033-9. [PMID: 20572307 PMCID: PMC2890944 DOI: 10.3748/wjg.v16.i24.3033] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To establish whether virulence factor genes vacA and cagA are present in Helicobacter pylori (H. pylori) retrieved from gastric mucosa and dental plaque in patients with dyspepsia.
METHODS: Cumulative dental plaque specimens and gastric biopsies were submitted to histological examination, rapid urease test and polymerase chain reaction (PCR) assays to detect the presence of cagA and vacA polymorphisms.
RESULTS: Detection of H. pylori from dental plaque and gastric biopsy samples was greater by PCR compared to histological examination and the rapid urease test. DNA from H. pylori was detected in 96% of gastric mucosa samples and in 72% of dental plaque samples. Sixty-three (89%) of 71 dental plaque samples that were H. pylori-positive also exhibited identical vacA and cagA genotypes in gastric mucosa. The most common genotype was vacAs1bm1 and cagA positive, either in dental plaque or gastric mucosa. These virulent H. pylori isolates were involved in the severity of clinical outcome.
CONCLUSION: These pathogenic strains were found simultaneously in dental plaque and gastric mucosa, which suggests that gastric infection is correlated with the presence of H. pylori in the mouth.
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Restriction fragment length polymorphism of urease C and urease B genes of Helicobacter pylori strains isolated from Brazilian patients with peptic ulcer and chronic gastritis. Dig Dis Sci 2009; 54:1487-93. [PMID: 19005761 DOI: 10.1007/s10620-008-0525-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2008] [Accepted: 09/01/2008] [Indexed: 01/27/2023]
Abstract
The aim of the present work is to identify the presence of Helicobacter pylori bacterium in samples of gastric mucosa fragments, obtained by gastric biopsy, from Brazilian patients with peptic ulcer and chronic gastritis and also to determine differences among the prevalent strains in these two diseases by urease C and urease B genes amplification utilizing nested polymerase chain reaction (PCR) and PCR. We encountered 17 genotyping patterns for urease C and 7 for urease B and, although no significant differences were found among the patterns encountered for both diseases, we found predominant groups for each disease. Typing methods of the products obtained by nested PCR and PCR show a functional scheme and are of great importance for epidemiologic studies and H. pylori strain characterization, in addition to allowing correlation among the several strains and their role in the diseases caused by this microorganism.
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Gomes B, De Martinis E. The significance of Helicobacter pylori in water, food and environmental samples. Food Control 2004. [DOI: 10.1016/s0956-7135(03)00106-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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