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helicobacter pediatrics

Bruno Silva, Alexandra Nunes, Filipa F Vale, Raquel Rocha, João Paulo Gomes, Ricardo Dias, Mónica Oleastro
BACKGROUND: Helicobacter pylori virulence is associated with different clinical outcomes. The existence of an intact dupA gene from tfs4b cluster has been suggested as a predictor for duodenal ulcer development. However, the role of tfs plasticity zone clusters in the development of ulcers remains unclear. We studied several H. pylori strains to characterize the gene arrangement of tfs3 and tfs4 clusters and their impact in the inflammatory response by infected gastric cells. METHODS: The genome of 14 H...
April 24, 2017: Helicobacter
Miriam R Conces, Christina A Arnold, Peter B Baker, Christopher M Carter, Bonita Fung, Vinay Prasad, Michael A Arnold
Objectives: Recent studies in adults have examined the utility of immunohistochemistry (IHC) in detecting Helicobacter in gastric biopsy specimens and reached differing conclusions. Dedicated cost-benefit analysis of Helicobacter IHC in pediatric gastric biopsy specimens has not been performed. Methods: From 1,955 pediatric gastric biopsies in a 1-year period, we identified 63 Helicobacter -positive and 120 Helicobacter -negative biopsy specimens. All cases were scored according to the Updated Sydney System for the severity of inflammation...
November 1, 2016: American Journal of Clinical Pathology
Carolina Romo-González, Eugenia Mendoza, Robertino M Mera, Rafael Coria-Jiménez, Patricia Chico-Aldama, Rita Gomez-Diaz, Ximena Duque
BACKGROUND: There is little information about the possible role of H. pylori infection on appetite-regulating peptides in children. This study evaluated the association between H. pylori infection and serum levels of ghrelin, leptin, and obestatin in schoolchildren. METHODS: One hundred seventy-eight schoolchildren, students at boarding schools in Mexico City, participated. H. pylori infection status was determined every six months for one year by a breath test using (13)C-urea; schoolchildren with consistently positive or negative results were selected to participate...
April 19, 2017: Pediatric Research
Marina Saes, Roger Willian de Labio, Lucas Trevizani Rasmussen, Spencer Luiz Marques Payão
BACKGROUND: Helicobacter pylori (H. pylori) is a gram-negative bacterium that colonizes the human stomach and causes a variety of gastric diseases. This study evaluated the correlations between the -251 (T>A) (rs4073) polymorphism of interleukin-8 (IL-8), the etiology of gastric disease, and H. pylori infection in pediatric and adolescent patients. METHODS: DNA samples were obtained from 285 gastric biopsies from pediatric patients. H. pylori was detected by PCR, whereas PCR-RFLP was used to characterize the -251 (T>A) polymorphism of IL-8...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
Qi Yang, Camelia Stefanovici, Quais Mujawar, Wael El-Matary
No abstract text is available yet for this article.
January 1, 2017: Pediatric and Developmental Pathology
Chen Li'e, Che Juan, Jiang Dongying, Feng Guiling, Zheng Tihua, Wang Yanfei
CONTEXT AND OBJECTIVE: Helicobacter pylori (H. pylori) is a chronic infectious pathogen with high prevalence. This study investigated the interaction between environmental tobacco exposure and H. pylori infection on the incidence of chronic tonsillitis in Chinese children. DESIGN AND SETTING: Cross-sectional study performed in an outpatient clinic in China. METHODS: Pediatric patients with chronic tonsillitis were enrolled. H. pylori infection was determined according to the presence of H...
January 2017: São Paulo Medical Journal, Revista Paulista de Medicina
M A Valdovinos, E Montijo, A T Abreu, S Heller, A González-Garay, D Bacarreza, M Bielsa-Fernández, M C Bojórquez-Ramos, F Bosques-Padilla, A I Burguete-García, R Carmona-Sánchez, A Consuelo-Sánchez, E Coss-Adame, J A Chávez-Barrera, M de Ariño, J Flores-Calderón, O Gómez-Escudero, M S González-Huezo, M E Icaza-Chávez, A Larrosa-Haro, M Morales-Arámbula, C Murata, J A Ramírez-Mayans, J M Remes-Troche, T Rizo-Robles, M Peláez-Luna, E M Toro-Monjaraz, A Torre, M E Urquidi-Rivera, R Vázquez, J K Yamamoto-Furusho, F Guarner
INTRODUCTION: Probiotics are frequently prescribed in clinical practice. Their efficacy in treating gastrointestinal disorders is supported by a significant number of clinical trials. However, the correct prescription of these agents is hampered due to a lack of knowledge of the scientific evidence and to the different presentations and microbial compositions of the probiotics that are currently available. AIM: To provide the clinician with a consensus review of probiotics and recommendations for their use in gastroenterology...
January 16, 2017: Revista de Gastroenterología de México
John Jairo Aguilera-Correa, Pedro Urruzuno, Josefa Barrio, María José Martinez, Sonia Agudo, Angela Somodevilla, Laura Llorca, Teresa Alarcón
The aim of this study was to use a commercially available kit (GenoType® HelicoDR; Hain Life Science, Germany) to detect Helicobacter pylori infection and clarithromycin resistance genotype in biopsies obtained from symptomatic children. RESULTS: 111 out of 136 (81.6%) biopsies were H. pylori positive by genotype: 47 (42.3%) showed wild-type genotype, 53 resistant genotype (47.7%) and 11 heterogeneous genotype (9.9%). Culture was negative in 27 out of the 111 genotyped biopsies. Mutation A2143G (87...
February 2017: Diagnostic Microbiology and Infectious Disease
Laura Llorca, Guillermo Pérez-Pérez, Pedro Urruzuno, Maria Josefa Martinez, Tadasu Iizumi, Zhan Gao, Jiho Sohn, Jennifer Chung, Laura Cox, Aurea Simón-Soro, Alex Mira, Teresa Alarcón
BACKGROUND: Helicobacter pylori colonizes the human stomach of approximately 50% of the world's population, and increases the risk of several gastric diseases. The goal of this study is to compare the gastric microbiota in pediatric patients with and without H. pylori colonization. METHODS: We studied 51 children who underwent gastric endoscopy because of dyspeptic symptoms (18 H. pylori positive and 33 negative). Gastric biopsies were obtained for rapid urease test, culture, histology and DNA extraction...
February 2017: Pediatric Infectious Disease Journal
Thomas G Blanchard, Steven J Czinn
Establishment of Helicobacter pylori infection as an etiologic agent of peptic ulcer disease and other gastric pathologies marked a revolution in gastroenterology which spurred an enormous interest in gastric physiology and immunology research. The association was soon also demonstrated in children as well. Application of antimicrobial therapies have proven remarkably efficacious in eradicating H. pylori and curing pediatric patients of duodenal ulcers as well as gastritis, negating a lifetime of ineffective therapy and life-threatening disease...
November 2, 2016: Pediatric Research
Amin Talebi Bezmin Abadi, Johannes G Kusters
BACKGROUND: Infection with Helicobacter pylori is associated with severe digestive diseases including chronic gastritis, peptic ulcer disease, and gastric cancer. Successful eradication of this common gastric pathogen in individual patients is known to prevent the occurrence of peptic ulcer disease and gastric cancer. DISCUSSION: With half of the world's population being infected with H, pylori and only few antibiotics result in an effective eradication, a successful antibiotic driven worldwide eradication program seems unlikely...
August 12, 2016: BMC Gastroenterology
Thomas Regnath, Olaf Raecke, Axel Enninger, Ralf Ignatius
BACKGROUND: Increasing antibiotic resistance has been reported for Helicobacter pylori, but data on the prevalence of antibiotic resistance of H. pylori in pediatric patients and the development of resistance over time are sparse. METHODS: Data for 610 H. pylori isolates obtained between 2002 and 2015 from gastric biopsies of 582 (mainly treatment-naïve) pediatric patients from southwest Germany were analyzed retrospectively regarding the antibiotic susceptibility determined by Etest and patients' characteristics...
February 2017: Helicobacter
Tugba Koca, Filiz Serdaroglu, Selim Dereci, Mustafa Akcam
OBJECTIVE: To study the characteristics of peptic ulcer and erosion in pediatric patients. METHODS: Over a period of seven years, 1,026 children underwent upper gastrointestinal endoscopy in our pediatric gastroenterology unit. RESULTS: Peptic ulcers and erosions were found in 59 (7.2%) patients [ulcers in 42 (5.1%)and erosions in 17 (2.1%)]. Thirty (50.9%) children presented with acute upper gastrointestinal bleeding. Helicobacter pylori positivity was found in 27 patients (45...
August 8, 2016: Indian Pediatrics
J Wasilewska, M Klukowski, K Debkowska, J Kilon, D Citko, M Flisiak, M Oleksinska, M Kaczmarski
OBJECTIVE: Chronic Helicobacter pylori (HP) infection is considered to be a factor involved in obstructive sleep apnea syndrome (OSAS). This cross-sectional study examined the seroprevalence of HP in children with sleep-disordered breathing (SDB) in respect to OSAS severity and in reference to other common pediatric medical conditions. METHODS: Overnight polysomnography with pH-metry (PSG) was performed at a Sleep Laboratory (in the years 2008-2011). OSAS severity was determined based on Obstructive Apnea Index (OAI)...
August 2016: International Journal of Pediatric Otorhinolaryngology
Nuria Boronat-Echeverría, Héctor Aguirre-Mariscal, Margarita Carmolinga-Ponce, Yolanda Sevilla-Delgado, Ricardo Miceli-Flores, Aisha Kennedy-Padilla, Juan Manuel Mejía-Aranguré
OBJECTIVES: The study aimed to demonstrate Helicobacter pylori presence in otitis media with effusion (OME) and its association with symptomatology of gastroesophageal reflux disease (GERD). METHODS: In a cohort study, 69 effusions were collected during tympanostomy tube insertion for H. pylori detection using PCR and ELISA. Validated questionnaires were performed according to age for clinical diagnosis of GERD; chi-square ×2 statistical analysis was made. RESULTS: Eight of the 69 ear effusions (5...
August 2016: International Journal of Pediatric Otorhinolaryngology
D Ortiz-Princz, G Daoud, A Salgado-Sabel, M E Cavazza
The prevalence of H. pylori infection, mainly acquired during childhood and may be persisting throughout life, has been found high in developing countries; this high prevalence is related to low socioeconomic status. The persistence of bacterium exposure is related to gastritis and other severe complications including peptic ulcer, lymphoma MALT and gastric cancer, which are rarely present in the pediatric age due to a lower inflammatory and immunological response. Virulence factors, host gastric mucosal factors, and the natural environment of patients are associated with the clinical outcome of H...
May 2016: European Review for Medical and Pharmacological Sciences
Carolina A Serrano, Miguel A Leon, Camila Palma, Macarena Vera, Caroll Hernandez, Paul R Harris
INTRODUCTION: Failure to eradicate Helicobacter pylori despite antibiotic treatment is generally attributed to increasing clarithromycin resistance conferred by point mutations in the 23S-rRNA gene or metronidazole resistance attributed to rdxA gene deletion in patients. Scarce data for pediatric population are available from developing countries. OBJECTIVES: To determine the presence of A2142G/C and A2143G mutations in the 23S-rRNA gene and/or rdxA gene deletion in a group of symptomatic H...
May 6, 2016: Journal of Pediatric Gastroenterology and Nutrition
Ofelia Castillo Contreras, Jorge Maguiña Quispe, Harold Benites Goñi, Alfonso Chacaltana Mendoza, Edson Guzmán Calderón, Milagros Dávalos Moscol, Oscar Frisancho Velarde
OBJECTIVE: To determine the prevalence of Helicobacter pylori in symptomatic outpatients in Red Rebagliati (EsSalud) from 2010 to 2013. MATERIAL AND METHODS: An observational, transversal and analytical study. Records of outpatients with diagnostic 13C-urea breath test of Helicobacter pylori in the period 2010-2013 were reviewed. RESULTS: Of the 1711 patients, the overall prevalence of Helicobacter pylori was 45.5% (95% CI: 43.17-47.89) being higher in women than in men (47...
January 2016: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
Eun Hye Lee, Hye Ran Yang, Hye Seung Lee
BACKGROUND/AIMS: Abdominal pain-related functional gastrointestinal disorder (AP-FGID) is common in children and adults. However, the mechanism of AP-FGID is not clearly known. Recently, micro-inflammation, especially eosinophilia in the gastrointestinal tract, was suggested in the pathophysiology of AP-FGID in adults. The aim of this study was to evaluate the association of gastric and duodenal eosinophilia with pediatric AP-FGID. METHODS: In total, 105 pediatric patients with AP-FGID were recruited and classified into 4 subgroups based on the Rome III criteria...
July 30, 2016: Journal of Neurogastroenterology and Motility
Norishi Ueda
Background.  There is no literature review on gastroduodenal perforation or ulcer (GDPU) with rotavirus (RV) and norovirus (NoV) gastroenteritis. Methods.  Pediatric cases of GDPU or upper gastrointestinal bleeding with RV and NoV gastroenteritis were searched from September 1974 until October 2015 using PubMed, Google for English, other-language-publications, and Ichushi ( for Japanese-language publications. All reports confirming GDPU or upper gastrointestinal bleeding with RV and NoV gastroenteritis were eligible for inclusion in the study...
January 2016: Open Forum Infectious Diseases
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