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Helicobacter pylori

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https://www.readbyqxmd.com/read/28110439/combination-of-interleukin-1-polymorphism-and-helicobacter-pylori-infection-an-increased-risk-of-gastric-cancer-in-pakistani-population
#1
Yasir Raza, Adnan Khan, Asif Iqbal Khan, Saeed Khan, Shakeel Akhter, Muhammad Mubarak, Ayaz Ahmed, Shahana Urooj Kazmi
Helicobacter pylori is one of the major risk factors involved in the development ofgastritis and gastric cancer (GC). H. pylori infection leads to increased production of pro-inflammatory cytokines by the host. Carriage of specific polymorphisms in cytokine genes may be associated with host susceptibility to the development of GC. We investigated the role of host genetic factors including polymorphisms of IL-1B and IL-1RN in correlation with gastritis and GC in H. pylori infected Pakistani population. A total of 230 gastritis cases and 100 GC cases were genotyped for IL 1B-511 and IL-1RN penta-allelic variable number of tandem repeats (VNTRs)...
January 21, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28110098/clinical-manifestations-of-helicobacter-pylori-negative-gastritis
#2
Seiji Shiota, Aaron P Thrift, Linda Green, Rajesh Shah, Gordana Verstovsek, Massimo Rugge, David Y Graham, Hashem B El-Serag
OBJECTIVES: There are data to suggest the existence of non-H. pylori gastritis. However, the risk factors and clinical course for H. pylori-negative gastritis remain unclear. We aimed to examine the prevalence and determinants of H. pylori-negative gastritis in a large multiethnic clinical population. METHOD: We conducted a cross-sectional study among patents scheduled for an elective esophagastroduodenoscopy or attending selected primary care clinics and eligible for screening colonoscopy at a single VA medical center...
January 18, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28109257/triple-therapy-versus-sequential-therapy-for-the-first-line-helicobacter-pylori-eradication
#3
Ji Young Chang, Ki-Nam Shim, Chung Hyun Tae, Ko Eun Lee, Jihyun Lee, Kang Hoon Lee, Chang Mo Moon, Seong-Eun Kim, Hye-Kyung Jung, Sung-Ae Jung
BACKGROUND: The eradication rate of Helicobacter pylori (H. pylori) with triple therapy which was considered as standard first-line treatment has decreased to 70-85%. The aim of this study is to compare 7-day triple therapy versus 10-day sequential therapy as the first line treatment. METHODS: Data of 1240 H. pylori positive patients treated with triple therapy or sequential therapy from January 2013 to December 2015 were analyzed retrospectively. The patients who had undertaken previous H...
January 21, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28107506/association-between-increased-gastric-juice-acidity-and-sliding-hiatal-hernia-development-in-humans
#4
Hiroshi Kishikawa, Kayoko Kimura, Asako Ito, Kyoko Arahata, Sakiko Takarabe, Shogo Kaida, Takanori Kanai, Soichiro Miura, Jiro Nishida
OBJECTIVES: Several clinical factors; overweight, male gender and increasing age, have been implicated as the etiology of hiatal hernia. Esophageal shortening due to acid perfusion in the lower esophagus has been suggested as the etiological mechanism. However, little is known about the correlation between gastric acidity and sliding hiatus hernia formation. This study examined whether increased gastric acid secretion is associated with an endoscopic diagnosis of hiatal hernia. METHODS: A total of 286 consecutive asymptomatic patients (64 were diagnosed as having a hiatal hernia) who underwent upper gastrointestinal endoscopy were studied...
2017: PloS One
https://www.readbyqxmd.com/read/28106125/baba-dependent-binding-of-helicobacter-pylori-to-human-gastric-mucins-cause-aggregation-that-inhibits-proliferation-and-is-regulated-via-arss
#5
Emma C Skoog, Médea Padra, Anna Åberg, Pär Gideonsson, Ikenna Obi, Macarena P Quintana-Hayashi, Anna Arnqvist, Sara K Lindén
Mucins in the gastric mucus layer carry a range of glycan structures, which vary between individuals, can have antimicrobial effect or act as ligands for Helicobacter pylori. Mucins from various individuals and disease states modulate H. pylori proliferation and adhesin gene expression differently. Here we investigate the relationship between adhesin mediated binding, aggregation, proliferation and adhesin gene expression using human gastric mucins and synthetic adhesin ligand conjugates. By combining measurements of optical density, bacterial metabolic activity and live/dead stains, we could distinguish bacterial aggregation from viability changes, enabling elucidation of mechanisms behind the anti-prolific effects that mucins can have...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105483/gastric-acid-secretion-and-gastrin-release-during-continuous-vagal-neuromonitoring-in-thyroid-surgery
#6
Liu Xiaoli, Che-Wei Wu, Hoon Yub Kim, Wen Tian, Feng-Yu Chiang, Renbin Liu, Angkoon Anuwong, Gregory W Randolph, Gianlorenzo Dionigi, Matteo Lavazza
PURPOSE: The vagus nerve (VN) has essential regulatory roles in the gastric acid secretion and gastrin release. Continuous intraoperative neuromonitoring (CIONM) via VN stimulation is a promising technique in thyroid surgery because it potentially avoids injury to the recurrent laryngeal nerve. However, no studies have investigated changes in gastric acid secretion and gastrin release during CIONM. METHOD: This prospective study of 58 thyroid surgery patients compared gastric acid and serum gastrin at five time points: (1) before skin incision, (2) after baseline calibration of CIONM probe, (3) +20 min from baseline, (4) before probe removal, and (5) after extubation...
January 19, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28104980/novel-caga-elisa-exhibits-enhanced-sensitivity-of-helicobacter-pylori-caga-antibody
#7
Yuichi Matsuo, Yasutoshi Kido, Junko Akada, Seiji Shiota, Tran Thanh Binh, Tran Thi Huyen Trang, Ho D Q Dung, Pham Huu Tung, Tran Dinh Tri, Ngo P Minh Thuan, Le Quang Tam, Bui Chi Nam, Vu Van Khien, Yoshio Yamaoka
AIM: To develop a novel Helicobacter pylori (H. pylori) CagA antibody enzyme-linked immunosorbent assay (ELISA) suitable for detecting serum anti-CagA antibodies with high sensitivity. METHODS: Recombinant East Asian-type CagA protein was purified and immobilized for ELISA. Serum samples from 217 Vietnamese individuals (110 H. pylori-infected and 107 uninfected individuals) were applied. Conventional ELISA from Western-type CagA and our East Asian-type CagA ELISA were evaluated by comparing 38 subjects with the Western-type genotype and 72 subjects with the East Asian-type cagA genotype...
January 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28104319/the-mexican-consensus-on-probiotics-in-gastroenterology
#8
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
https://www.readbyqxmd.com/read/28103315/multiple-acid-sensors-control-helicobacter-pylori-colonization-of-the-stomach
#9
Julie Y Huang, Emily Goers Sweeney, Karen Guillemin, Manuel R Amieva
Helicobacter pylori's ability to respond to environmental cues in the stomach is integral to its survival. By directly visualizing H. pylori swimming behavior when encountering a microscopic gradient consisting of the repellent acid and attractant urea, we found that H. pylori is able to simultaneously detect both signals, and its response depends on the magnitudes of the individual signals. By testing for the bacteria's response to a pure acid gradient, we discovered that the chemoreceptors TlpA and TlpD are each independent acid sensors...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28100991/sphincter-of-oddi-dysfunction-a-perplexing-presentation
#10
Sana Ahmad Din, Iman Naimi, Mirza Beg
Sphincter of Oddi dysfunction is caused by stenosis or dyskinesia of the sphincter of Oddi, leading to blockage of bile drainage from the common bile duct. We present the case of a 16-year-old female with chronic abdominal pain who underwent laparoscopic cholecystectomy for cholelithiasis but continued to experience abdominal pain, nausea, and vomiting along with persistently elevated ALT and AST levels. Postoperative abdominal ultrasound was nondiagnostic. Esophagogastroduodenoscopy showed mild reflux esophagitis and mild chronic Helicobacter pylori-negative gastritis...
September 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/28098578/helicobacter-pylori-and-risk-of-nonalcoholic-fatty-liver-disease-a-systematic-review-and-meta-analysis
#11
Karn Wijarnpreecha, Charat Thongprayoon, Panadeekarn Panjawatanan, Wuttiporn Manatsathit, Veeravich Jaruvongvanich, Patompong Ungprasert
BACKGROUND/OBJECTIVES: Helicobacter pylori (H. pylori) is the most common chronic bacterial infection. Patients with H. pylori infection may be at an increased risk of nonalcoholic fatty liver disease (NAFLD) because of chronic inflammation and insulin resistance. Several epidemiologic studies attempting to determine this risk have yielded inconsistent results. This meta-analysis was conducted with the aims to summarize all available evidence and estimate the risk of NAFLD in patients with H...
January 17, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28098408/vonoprazan-improves-the-efficacy-of-helicobacter-pylori-eradication-therapy-with-a-regimen-consisting-of-clarithromycin-and-metronidazole-in-patients-allergic-to-penicillin
#12
Shoko Ono, Mototsugu Kato, Soichi Nakagawa, Katsuhiro Mabe, Naoya Sakamoto
BACKGROUND: Although all Helicobacter pylori (H. pylori)-positive patients should receive eradication therapy, the therapy is a challenge for patients allergic to penicillin. There have been a few reports on the efficacy of eradication therapy for such patients. OBJECTIVE: To analyze the efficacy of vonoprazan or proton pump inhibitor (PPI)-based 7-day triple therapy in patients allergic to penicillin. MATERIALS AND METHODS: A total of 88 consecutive patients allergic to penicillin who received H...
January 18, 2017: Helicobacter
https://www.readbyqxmd.com/read/28098406/contemporary-migration-patterns-in-the-prevalence-of-helicobacter-pylori-infection-a-systematic-review
#13
REVIEW
Samantha Morais, Ana Rute Costa, Ana Ferro, Nuno Lunet, Bárbara Peleteiro
BACKGROUND: A rapid growth in the number of international migrants over the past years has occurred with most traveling to more affluent settings. As Helicobacter pylori infects over half of the adult population and its prevalence is higher in developing countries, understanding the prevalence of infection in migrants can provide insight into future trends in the burden and management of infection. We aimed to describe the prevalence of H. pylori among migrants through a systematic literature review...
January 18, 2017: Helicobacter
https://www.readbyqxmd.com/read/28098401/antibiotic-resistance-of-helicobacter-pylori-in-chinese-children-a%C3%A2-multicenter-retrospective-study-over-7%C3%A2-years
#14
Lan Li, Yini Ke, Chaohui Yu, Guogang Li, Ningmin Yang, Jianzhong Zhang, Youming Li
BACKGROUND: To determine the prevalence of resistance to metronidazole, clarithromycin, levofloxacin, amoxicillin, and furazolidone in Helicobacter pylori isolated from Chinese children. MATERIALS AND METHODS: This multicenter retrospective study was conducted from January 2009 to December 2015. A total of 1746 isolates of H. pylori were collected from nine areas of Zhejiang province in the southeast coastal region of China. H. pylori strains were examined for antibiotics susceptibility by agar dilution method...
January 18, 2017: Helicobacter
https://www.readbyqxmd.com/read/28096693/gastric-and-colon-metastasis-from-breast-cancer-case-report-review-of-the-literature-and-possible-underlying-mechanisms
#15
J Carlos Villa Guzmán, J Espinosa, R Cervera, M Delgado, R Patón, J M Cordero García
Gastrointestinal metastases from breast cancer are not common. We present a 58-year-old female diagnosed with lobular breast cancer some years before whose relapses were gastric and colonic mucosal. Simultaneous metastases are extremely rare. To our knowledge, no cases of initial dual affectation have been reported. The patient also showed gastritis by Helicobacter pylori. Invasive lobular breast carcinoma is the most frequent special type of breast cancer and carries some specific molecular alterations such as loss of expression of E-cadherin...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28096401/ornithine-decarboxylase-regulates-m1-macrophage-activation-and-mucosal-inflammation-via-histone-modifications
#16
Dana M Hardbower, Mohammad Asim, Paula B Luis, Kshipra Singh, Daniel P Barry, Chunying Yang, Meredith A Steeves, John L Cleveland, Claus Schneider, M Blanca Piazuelo, Alain P Gobert, Keith T Wilson
Macrophage activation is a critical step in host responses during bacterial infections. Ornithine decarboxylase (ODC), the rate-limiting enzyme in polyamine metabolism, has been well studied in epithelial cells and is known to have essential roles in many different cellular functions. However, its role in regulating macrophage function during bacterial infections is not well characterized. We demonstrate that macrophage-derived ODC is a critical regulator of M1 macrophage activation during both Helicobacter pylori and Citrobacter rodentium infection...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28095729/impact-of-reactive-oxygen-species-generation-on-helicobacter-pylori-related-extragastric-diseases-a-hypothesis
#17
Jannis Kountouras, Marina Boziki, Stergios A Polyzos, Panagiotis Katsinelos, Emmanouel Gavalas, Christos Zeglinas, Dimitri Tzivras, Iordanis Romiopoulos, Nikolaos Giorgakis, Kyriaki Anastasiadou, Elizabeth Vardaka, Constantinos Kountouras, Evangelos Kazakos, Georgia Xiromerisiou, Efthimios Dardiotis, Georgia Deretzi
Helicobacter pylori (H. pylori) induces reactive oxygen species (ROS) production that contribute to pathogenesis of a variety of H. pylori-related gastric diseases, as shown in animal and human studies. Helicobacter pylori infection is also associated with variety of systemic extragastric diseases in which H. pylori-related ROS production might also be involved in the pathogenesis of these systemic conditions. We proposed that Hp-related ROS may play a crucial role in the pathophysiology of Hp-related systemic diseases including Alzheimer's disease, multiple sclerosis, glaucoma and other relative neurodegenerative diseases, thereby suggesting introduction of relative ROS scavengers as therapeutic strategies against these diseases which are among the leading causes of disability and are associated with a large public health global burden...
January 17, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28094491/the-first-line-treatment-of-helicobacter-pylori-infection-in-piedmont-in-the-year-2017
#18
Rinaldo Pellicano, Davide G Ribaldone, Sharmila Fagoonee, Marco Astegiano, Giorgio M Saracco
No abstract text is available yet for this article.
January 17, 2017: Panminerva Medica
https://www.readbyqxmd.com/read/28093653/the-administrative-project-of-helicobacter-pylori-infection-screening-among-junior-high-school-students-in-an-area-of-japan-with-a-high-incidence-of-gastric-cancer
#19
Chika Kusano, Takuji Gotoda, Hideki Ishikawa, Mitsuhiko Moriyama
OBJECTIVE: Helicobacter pylori infection is a common chronic infection that is closely associated with gastric cancer, known to be decreasing worldwide. We set up an administrative project of screening examination for H. pylori infection in junior high school students in Akita Prefecture to investigate the current prevalence of H. pylori infection in childhood in an area where the incidence of gastric cancer is particularly high. SUBJECTS AND METHODS: All students in their second or third year of junior high school (13 to 15 years old) in two cities in Akita Prefecture were recruited...
January 16, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28093213/characterization-of-the-efficiency-and-uncertainty-of-skimmed-milk-flocculation-for-the-simultaneous-concentration-and-quantification-of-water-borne-viruses-bacteria-and-protozoa
#20
Eloy Gonzales-Gustavson, Yexenia Cárdenas-Youngs, Miquel Calvo, Marcelle Figueira Marques da Silva, Ayalkibet Hundesa, Inmaculada Amorós, Yolanda Moreno, Laura Moreno-Mesonero, Rosa Rosell, Llilianne Ganges, Rosa Araujo, Rosina Girones
In this study, the use of skimmed milk flocculation (SMF) to simultaneously concentrate viruses, bacteria and protozoa was evaluated. We selected strains of faecal indicator bacteria and pathogens, such as Escherichia coli and Helicobacter pylori. The viruses selected were adenovirus (HAdV 35), rotavirus (RoV SA-11), the bacteriophage MS2 and bovine viral diarrhoea virus (BVDV). The protozoa tested were Acanthamoeba, Giardia and Cryptosporidium. The mean recoveries with q(RT)PCR were 66% (HAdV 35), 24% (MS2), 28% (RoV SA-11), 15% (BVDV), 60% (E...
January 16, 2017: Journal of Microbiological Methods
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