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https://www.readbyqxmd.com/read/28550752/intracellular-delivery-of-oligonucleotides-in-helicobacter-pylori-by-fusogenic-liposomes-in-the-presence-of-gastric-mucus
#1
Rita S Santos, George R Dakwar, Elisa Zagato, Toon Brans, Céu Figueiredo, Koen Raemdonck, Nuno F Azevedo, Stefaan C De Smedt, Kevin Braeckmans
The rising antimicrobial resistance contributes to 25000 annual deaths in Europe. This threat to the public health can only be tackled if novel antimicrobials are developed, combined with a more precise use of the currently available antibiotics through the implementation of fast, specific, diagnostic methods. Nucleic acid mimics (NAMs) that are able to hybridize intracellular bacterial RNA have the potential to become such a new class of antimicrobials and additionally could serve as specific detection probes...
May 20, 2017: Biomaterials
https://www.readbyqxmd.com/read/28550494/cost-effectiveness-of-combined-serum-anti-helicobacter-pylori-igg-antibody-and-serum-pepsinogen-concentrations-for-screening-for-gastric-cancer-risk-in-japan
#2
Shota Saito, Motoi Azumi, Yusuke Muneoka, Katsuhiko Nishino, Takashi Ishikawa, Yuichi Sato, Shuji Terai, Kouhei Akazawa
BACKGROUND: A combination of assays for the presence of serum anti-Helicobacter pylori IgG antibody (HPA) and serum pepsinogen (PG) concentrations can be used to screen for gastric cancer risk. In Japan, this "ABC method" is considered an effective means of stratifying gastric cancer risk. This study aimed to ascertain its cost-effectiveness for assessing gastric cancer risk. METHODS: A Markov model was constructed to compare the cost-effectiveness of two strategies for gastric cancer-risk screening over a 30-year period: the ABC method, which uses a combination of assessing the presence of HPA and measuring serum PG concentrations and scheduling endoscopies accordingly, and annual endoscopic screening...
May 26, 2017: European Journal of Health Economics: HEPAC: Health Economics in Prevention and Care
https://www.readbyqxmd.com/read/28547755/demographic-and-socioeconomic-influences-on-helicobacter-pylori-gastritis-and-its-pre-neoplastic-lesions-amongst-us-residents
#3
R M Genta, K O Turner, A Sonnenberg
BACKGROUND: Gastric infection with Helicobacter pylori (Hp) can lead to chronic inactive gastritis, atrophy and intestinal metaplasia. AIMS: To investigate in a cross-sectional study these changes among different socioeconomic and ethnic groups within the USA. METHODS: We used the Miraca Life Sciences database, an electronic depository of clinicopathological records from patients distributed throughout the USA, to extract data from 487 587 patients who underwent oesophago-gastro-duodenoscopy with biopsy between 1/2008 and 12/2014...
May 25, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28546954/pleiotropic-cytotoxicity-of-vaca-toxin-in-host-cells-and-its-impact-on-immunotherapy
#4
REVIEW
Farnaz Fahimi, Mohammad Reza Tohidkia, Mehdi Fouladi, Reza Aghabeygi, Naser Samadi, Yadollah Omidi
Introduction: In the recent decades, a number of studies have highlighted the importance of Helicobacter pylori in the initiation and development of peptic ulcer and gastric cancer. Some potential virulence factors (e.g., urease, CagA, VacA, BabA) are exploited by this microorganism, facilitating its persistence through evading human defense mechanisms. Among these toxins and enzymes, vacuolating toxin A (VacA) is of a great importance in the pathogenesis of H. pylori. VacA toxin shows different pattern of cytotoxicity through binding to different cell surface receptors in various cells...
2017: BioImpacts: BI
https://www.readbyqxmd.com/read/28546118/alterations-in-metabolic-pathways-in-stomach-of-mice-infected-with-helicobacter-pylori
#5
Shin Nishiumi, Masaru Yoshida, Takeshi Azuma
Numerous studies of Helicobacter pylori (H. pylori) have been performed, but few studies have evaluated the effects of H. pylori infections using metabolome analysis, which involves the comprehensive study of low molecular weight metabolites. In this study, the metabolites in the stomach tissue of mice that had been infected with H. pylori SS1 for 1, 3, or 6 months were analyzed, and then evaluations of various metabolic pathways were performed to gain novel understandings of H. pylori infections. As a result, it was found that the glycolytic pathway, the tricarboxylic acid cycle, and the choline pathway tended to be upregulated at 1 month after the H...
May 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28545444/site-specific-his-asp-phosphoproteomic-analysis-of-prokaryotes-reveals-putative-targets-for-drug-resistance
#6
Shu-Jung Lai, I-Fan Tu, Wan-Ling Wu, Jhih-Tian Yang, Louis Y P Luk, Mei-Chin Lai, Yu-Hsuan Tsai, Shih-Hsiung Wu
BACKGROUND: Phosphorylation of amino acid residues on proteins is an important and common post-translational modification in both eukaryotes and prokaryotes. Most research work has been focused on phosphorylation of serine, threonine or tyrosine residues, whereas phosphorylation of other amino acids are significantly less clear due to the controversy on their stability under standard bioanalytical conditions. RESULTS: Here we applied a shotgun strategy to analyze the histidine and aspartate phosphorylations in different microbes...
May 25, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28545189/outcomes-of-a-randomized-controlled-trial-comparing-modified-high-dose-omeprazole-and-amoxicillin-triple-therapy-with-standard-triple-therapy-for-helicobacter-pylori-eradication
#7
Kitti Chunlertlith, Uaepong Limpapanasit, Pisaln Mairiang, Suda Vannaprasaht, Wichittra Tassaneeyakul, Apichat Sangchan, Kookwan Sawadpanich, Tanita Suttichaimongkol, Jamrus Pongpit, Moragot Pattarapongsin
Background: Helicobacter pylori (H. pylori) infection is related to peptic ulcer diseases and gastric cancer and eradication of H. pylori should be expected to decrease the risk of their development. Factors affecting H. pylori eradication are antibiotic resistance, CYP2C19 genotypes, drug regimen and patient compliance. Increment of omeprazole and amoxicillin dosage in clarithromycin-containing triple therapy regimen may overcome these problems and may be a better choice than the conventional clarithromycin-containing triple therapy regimen...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28545056/effect-of-helicobacter-pylori-infection-on-the-link-between-glp-1-expression-and-motility-of-the-gastrointestinal-tract
#8
Hirotsugu Eda, Hirokazu Fukui, Ryosuke Uchiyama, Yoshitaka Kitayama, Ken Hara, Mo Yang, Mio Kodani, Toshihiko Tomita, Tadayuki Oshima, Jiro Watari, Hiroko Tsutsui, Hiroto Miwa
BACKGROUND: Although Helicobacter pylori (H. pylori) infection is closely associated with the development of peptic ulcer, its involvement in pathophysiology in the lower intestinal tract and gastrointestinal (GI) motility remains unclear. Glucagon-like peptide-1 (GLP-1) is a gut hormone produced in the lower intestinal tract and involved in GI motility. Here, we investigated the effect of H. pylori infection on the link between GLP-1 expression and motility of the GI tract. METHODS: C57BL/6 mice were inoculated with a H...
2017: PloS One
https://www.readbyqxmd.com/read/28544984/histo-blood-group-antigens-as-mediators-of-infections
#9
REVIEW
Julie E Heggelund, Annabelle Varrot, Anne Imberty, Ute Krengel
The critical first step of a microbial infection is usually the attachment of pathogens to host cell glycans. Targets on host tissues are in particular the histo-blood group antigens (HBGAs), which are present in rich diversity in the mucus layer and on the underlying mucosa. Recent structural and functional studies have revealed significant new insight into the molecular mechanisms, explaining why individuals with certain blood groups are at increased risk of some infections. The most prominent example of blood-group-associated diseases is cholera, caused by infection with Vibrio cholerae...
May 22, 2017: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/28544222/usefulness-of-detection-of-clarithromycin-resistant-helicobacter-pylori-from-fecal-specimens-for-young-adults-treated-with-eradication-therapy
#10
Takako Osaki, Katsuhiro Mabe, Cynthia Zaman, Hideo Yonezawa, Masumi Okuda, Kenji Amagai, Shinji Fujieda, Mitsuhide Goto, Wataru Shibata, Mototsugu Kato, Shigeru Kamiya
BACKGROUND: To prevent Helicobacter pylori infection in the younger generation, it is necessary to investigate the prevalence of antibiotic-resistant H. pylori. OBJECTIVE: The aim of this study was to evaluate the method of PCR-based sequencing to detect clarithromycin (CAM) resistance-associated mutations using fecal samples as a noninvasive method. METHODS: DNA extracted from fecal specimens and isolates from gastric biopsy specimens were collected from patients with H...
May 22, 2017: Helicobacter
https://www.readbyqxmd.com/read/28543746/rosacea-is-associated-with-helicobacter-pylori-a-systematic-review-and-meta-analysis
#11
REVIEW
Astrid-Helene R Jørgensen, Alexander Egeberg, Robin Gideonsson, Leonard B Weinstock, Erik P Thyssen, Jacob P Thyssen
BACKGROUND: Rosacea is a common skin disease characterized by facial erythema, telangiectasia, papules, and pustules. Helicobacter pylori infection has been suggested to play a role in the etiopathogenesis of rosacea. OBJECTIVE: Systematically review and meta-analyse the relationship between rosacea and infection with Helicobacter pylori . METHODS: A literature search was performed using PubMed, EMBASE, and Web of Science. Data extraction and analyses were performed on descriptive data...
May 23, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28542582/clinical-implications-of-pre-existing-adenoma-in-endoscopically-resected-early-gastric-cancers
#12
Ji Min Choi, Sang Gyun Kim, Jung Kim, Seung Jun Han, Jae Yong Park, Sooyeon Oh, Jong Pil Im, Joo Sung Kim, Woo Ho Kim, Hyun Chae Jung
BACKGROUND: Although gastric adenoma is widely accepted as a precursor of gastric cancer, pre-existing adenoma is not always detected in gastric cancer patients. OBJECTIVE: To investigate the clinical characteristics of early gastric cancer (EGC) arising from adenoma, compared with those of EGC without pre-existing adenoma. METHODS: Patients who underwent endoscopic resection for EGC at a single tertiary hospital were divided into two groups based on the presence (ex-adenoma group) or absence (de novo group) of pre-existing adenoma on pathologic specimens...
2017: PloS One
https://www.readbyqxmd.com/read/28541262/joint-espghan-naspghan-guidelines-for-the-management-of-helicobacter-pylori-in-children-and-adolescents-update-2016
#13
Nicola L Jones, Sibylle Koletzko, Karen Goodman, Patrick Bontems, Samy Cadranel, Thomas Casswall, Steve Czinn, Benjamin D Gold, Jeannette Guarner, Yoram Elitsur, Matjaž Homan, Nicolas Kalach, Michal Kori, Armando Madrazo, Francis Megraud, Alexandra Papadopoulou, Marion Rowland
BACKGROUND: Because of the changing epidemiology of Helicobacter pylori infection and low efficacy of currently recommended therapies, an update of the European Society for Paediatric Gastroenterology Hepatology and Nutrition/North American Society for Pediatric Gastroenterology, Hepatology and Nutrition recommendations for the diagnosis and management of H pylori infection in children and adolescents is required. METHODS: A systematic review of the literature (time period: 2009-2014) was performed...
June 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28539935/efficacy-and-safety-of-the-triple-therapy-containing-ilaprazole-levofloxacin-and-amoxicillin-as-first-line-treatment-in-helicobacter-pylori-infections
#14
Hyo Jun Ahn, Dong Pil Kim, Myeong Su Chu, Hyeon Jeong Yun, Seok-Hwan Kim, Seung Woo Lee, Dong Soo Lee
Background and Aims. To establish the efficacy and safety of ilaprazole, levofloxacin, and amoxicillin as a first-line eradication treatment for Helicobacter pylori. Methods. Patients with gastric ulcer, duodenal ulcer, or gastritis, as detected by esophagogastroduodenoscopy with confirmed H. pylori infection between September 2014 and November 2015, were enrolled in the study. All participants received ilaprazole (10 mg bid), levofloxacin (500 mg bid), and amoxicillin (1000 mg bid) for 10 days. H. pylori eradication was confirmed by a (13)C-urea breath test at 6-8 weeks after the end of treatment...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28539915/the-possible-role-of-helicobacter-pylori-infection-in-non-alcoholic-fatty-liver-disease
#15
REVIEW
Dan-Dan Cheng, Cong He, Hong-Hui Ai, Ying Huang, Nong-Hua Lu
Helicobacter pylori (H. pylori) which colonizes the stomach can cause a wide array of gastric disorders, including chronic gastritis, peptic ulcer, and gastric cancer. Recently, accumulating evidence has implicated H. pylori infection in extragastrointestinal diseases such as cardiovascular diseases, neurological disorders, and metabolic diseases. At the same time, many scholars have noted the relationship between H. pylori infection and non-alcoholic fatty liver disease (NAFLD). Despite the positive association between H...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28539709/multipathway-integrated-adjustment-mechanism-of-glycyrrhiza-triterpenes-curing-gastric-ulcer-in-rats
#16
Ying Wang, Shuai Wang, Yongrui Bao, Tianjiao Li, Xin Chang, Guanlin Yang, Xiansheng Meng
BACKGROUND: Gastric ulcer is a common chronic disease in human digestive system, which is difficult to cure, easy to relapse, and endangers human health seriously. Compared with western medicine, traditional Chinese medicine has a unique advantage in improving the general situation, stablizing medical condition, and with little side effects. Glycyrrhiza known as "king of all the medicine", has a range of pharmacological activities and is commonly used in a variety of proprietary Chinese medicines and formulations...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28539032/elevated-gastric-antrum-erosions-in-portal-hypertension-patients-peptic-disease-or-mucosal-congestion
#17
Fernanda Cordeiro de Azevedo Conejo, Mabel Tatty Medeiros Fracassi, Maurício Saab Assef, Maurício Alves Ribeiro, Luiz Arnaldo Szutan, Fabio Gonçalves Ferreira
Background/Aims: Portal hypertension (PH) is a syndrome characterized by chronic increase in the pressure gradient between the portal vein and inferior vena cava. Previous studies have suggested an increased frequency of antral elevated erosive gastritis in patients with PH, as well as an etiologic association; however, there has not been any histological evidence of this hypothesis to date. Our aim was to evaluate the histological features found in elevated antral erosions in patients with portal hypertension...
May 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28538867/preval%C3%A3%C2%AAncia-de-infec%C3%A3-%C3%A3-o-por-helicobacter-pylori-em-uma-comunidade-ind%C3%A3-gena-em-s%C3%A3-o-paulo-e-fatores-associados-estudo-transversalprevalence-of-helicobacter-pylori-infection-in-an-indigenous-community-in-s%C3%A3-o-paulo-and-associated-factors-cross-sectional-study
#18
Juliana Rejane da Silva Roque, Rodrigo Strehl Machado, Douglas Rodrigues, Patrícia Rech, Elisabete Kawakami
CONTEXT AND OBJECTIVE: The prevalence of Helicobacter pylori infection is unevenly distributed among different populations. The aim here was to evaluate the factors associated with Helicobacter pylori infection among children up to five years of age living in a high-risk community. DESIGN AND SETTING: Cross-sectional study in an indigenous community of Guarani Mbya ethnicity, Tekoa Ytu and Tekoa Pyau villages, Jaraguá district, city of São Paulo (SP), Brazil. METHODS: 74 children aged 0...
March 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28538665/molecular-basis-of-alcohol-related-gastric-and-colon-cancer
#19
REVIEW
Hye-Kyung Na, Ja Young Lee
Many meta-analysis, large cohort studies, and experimental studies suggest that chronic alcohol consumption increases the risk of gastric and colon cancer. Ethanol is metabolized by alcohol dehydrogenases (ADH), catalase or cytochrome P450 2E1 (CYP2E1) to acetaldehyde, which is then further oxidized to acetate by aldehyde dehydrogenase (ALDH). Acetaldehyde has been classified by the International Agency for Research on Cancer (IARC) as a Group 1 carcinogen to humans. The acetaldehyde level in the stomach and colon is locally influenced by gastric colonization by Helicobacter pylori or colonic microbes, as well as polymorphisms in the genes encoding tissue alcohol metabolizing enzymes, especially ALDH2...
May 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28537662/an-overview-of-challenges-to-eradication-of-helicobacter-pylori-infection-and-future-prospects
#20
M Bagirova, A M Allahverdiyev, E S Abamor, H Aliyeva, G Unal, T D Tanalp
The eradication of H. pylori infection continues to be a challenge due to the evolution of drug-resistant bacteria, lack of a gold standard diagnostic method, and ineffectiveness of current vaccines. Additionally, there still is no consensus in the literature about the main source of gastric H. pylori infection. The bacterium has also been demonstrated to colonize in dental plaque and the oral cavity. We believe that to develop new approaches for successful eradication of the disease, factors such as the biology of the bacterium, reservoir differentiations, host-bacterium interactions and problems in diagnosis, treatment and vaccination must be comprehensively considered...
May 2017: European Review for Medical and Pharmacological Sciences
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