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Helicobacter

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https://www.readbyqxmd.com/read/29110387/cholesterol-%C3%AE-glucosyltransferase-gene-is-present-in-most-helicobacter-species-including-gastric-non-helicobacter-pylori-helicobacters-obtained-from-japanese-patients
#1
Masatomo Kawakubo, Kazuki Horiuchi, Takehisa Matsumoto, Jun Nakayama, Taiji Akamatsu, Tsutomu Katsuyama, Hiroyoshi Ota, Junji Sagara
BACKGROUND: Non-Helicobacter pylori helicobacters (NHPHs) besides H. pylori infect human stomachs and cause chronic gastritis and mucosa-associated lymphoid tissue lymphoma. Cholesteryl-α-glucosides have been identified as unique glycolipids present in H. pylori and some Helicobacter species. Cholesterol-α-glucosyltransferase (αCgT), a key enzyme for the biosynthesis of cholesteryl-α-glucosides, plays crucial roles in the pathogenicity of H. pylori. Therefore, it is important to examine αCgTs of NHPHs...
November 7, 2017: Helicobacter
https://www.readbyqxmd.com/read/29094477/rescue-therapy-with-bismuth-quadruple-regimen-in-patients-with-helicobacter-pylori-resistant-strains
#2
Giulia Fiorini, Ilaria Maria Saracino, Angelo Zullo, Luigi Gatta, Matteo Pavoni, Dino Vaira
BACKGROUND: Bismuth quadruple therapy (BQT) is the recommended rescue therapy for Helicobacter pylori (H. pylori) infection. This study aimed to assess the efficacy and safety of a 10-day BQT regimen in patients who failed previous therapies and were infected with multiresistant H. pylori strains MATERIALS AND METHODS: Helicobacter pylori-infected patients underwent endoscopy, culture, and susceptibility test for clarithromycin, metronidazole, and levofloxacin. Treatment with three-in-one capsule (Pylera®) four times daily and esomeprazole 20 mg twice daily for 10 days was administered...
November 1, 2017: Helicobacter
https://www.readbyqxmd.com/read/29058343/genotype%C3%A2-helicodr-test-in-comparison-with-histology-and-culture-for-helicobacter-pylori-detection-and-identification-of-resistance-mutations-to-clarithromycin-and-fluoroquinolones
#3
Nina Pastukh, Dana Binyamin, Avi On, Maya Paritsky, Avi Peretz
BACKGROUND: There are several methods for Helicobacter pylori infection diagnosis. AIM: The efficacies of three methods for H. pylori identification directly from a biopsy were compared: histology, culture, and molecular GenoType® HelicoDR test. MATERIALS & METHODS: Eighty-five triplicates of stomach antrum biopsies were obtained during gastroscopy procedures for culture, histology, and molecular assay. In addition, we performed molecular identification of genes encoding resistance to clarithromycin and fluoroquinolones...
October 23, 2017: Helicobacter
https://www.readbyqxmd.com/read/29035009/prevalence-antibiotic-resistance-and-mlst-typing-of-helicobacter-pylori-in-algiers-algeria
#4
Naïma Raaf, Wahiba Amhis, Houria Saoula, Ahmed Abid, Mhamed Nakmouche, Abdelmalek Balamane, Nassima Ali Arous, Mounira Ouar-Korichi, Filipa F Vale, Lucie Bénéjat, Francis Mégraud
BACKGROUND: Helicobacter pylori infection is common in Algeria, but there are few data on the characterization of isolated strains. The aim of this study was to update data on the prevalence of H. pylori in patients submitted to endoscopy, antibiotic resistance, and phylogeography of H. pylori strains isolated in Algiers. MATERIALS AND METHODS: This is a prospective study carried out between November 2015 and August 2016. The culture of H. pylori was performed on antral and fundic gastric biopsies of adult patients from 3 hospitals...
October 16, 2017: Helicobacter
https://www.readbyqxmd.com/read/29034535/psychological-effects-of-helicobacter-pylori-associated-atrophic-gastritis-in-patients-under-50%C3%A2-years-a-cross-sectional-study
#5
Atsushi Takeoka, Jun Tayama, Masakazu Kobayashi, Ikuko Sagara, Sayaka Ogawa, Tatsuo Saigo, Masaki Hayashida, Hironori Yamasaki, Shin Fukudo, Susumu Shirabe
BACKGROUND: While gastrointestinal function is known to be closely related to psychological status, the influence of Helicobacter pylori-associated atrophic gastritis is currently unknown. We aimed to determine whether atrophic gastritis status or H. pylori infection is associated with psychological distress or depressed mood. MATERIALS AND METHODS: We performed a cross-sectional, observational study involving 975 Japanese individuals (503 females; mean age, 44 ± 8 years) who underwent a health checkup...
October 16, 2017: Helicobacter
https://www.readbyqxmd.com/read/28980734/are-optic-nerve-heads-of-patients-with-helicobacter-pylori-infection-more-susceptible-to-glaucomatous-damage
#6
Cemile Ucgul Atilgan, Pinar Kosekahya, Ahmet Yozgat, Emine Sen, Nilufer Berker, Mehtap Caglayan, Selam Yekta Sendul, Emin Altiparmak, Pelin Yilmazbas
BACKGROUND: To compare retinal nerve fiber layer thicknesses (RNFLT) of patients with or without Helicobacter pylori infection and to reveal the possible RNFLT changes after H. pylori eradication. MATERIALS AND METHODS: Sixty-five eyes of 65 patients that tested positive for H. pylori (Group 1) and 48 eyes of 48 patients that tested negative for H. pylori (Group 2) were included. RNFLT analyses were performed with spectral-domain (SD) optical coherence tomography (OCT) in a total of five regions: the superior, inferior, nasal, and temporal quadrants and the average...
October 5, 2017: Helicobacter
https://www.readbyqxmd.com/read/28961384/diagnostic-accuracy-of-pcr-based-detection-tests-for-helicobacter-pylori-in-stool-samples-a-systematic-review-and-meta-analysis
#7
REVIEW
Fatemeh Khadangi, Maryam Yassi, Mohammad Amin Kerachian
BACKGROUND: Although different methods have been established to detect Helicobacter pylori (H. pylori) infection, identifying infected patients is an ongoing challenge. The aim of this meta-analysis was to provide pooled diagnostic accuracy measures for stool PCR test in the diagnosis of H. pylori infection. METHODS: In this study, a systematic review and meta-analysis were carried out on various sources, including MEDLINE, Web of Sciences, and the Cochrane Library from April 1, 1999, to May 1, 2016...
September 29, 2017: Helicobacter
https://www.readbyqxmd.com/read/28940945/effect-of-biopsy-site-on-detection-of-gastric-cancer-high-risk-groups-by-olga-and-olgim-stages
#8
Young-Il Kim, Myeong-Cherl Kook, Soo-Jeong Cho, Jong Yeul Lee, Chan Gyoo Kim, Jungnam Joo, Il Ju Choi
BACKGROUND/AIMS: The operative link for gastritis assessment (OLGA) and operative link on gastric intestinal metaplasia assessment (OLGIM) staging systems are recommended to assess the severity of gastritis, but the optimal biopsy sites have not been clearly defined. We aimed to investigate whether the scoring of the OLGA and OLGIM stages was affected by the use of different biopsy sites. METHODS: Between 2014 and 2015, to determine OLGA and OLGIM stages, seven biopsy samples were obtained from the antrum (lesser and greater curvatures [LG] of the antrum and lesser curvature of the angle) and corpus (LG and anterior and posterior walls [AP]) in 247 patients diagnosed with gastritis, gastric adenoma, or adenocarcinoma...
September 22, 2017: Helicobacter
https://www.readbyqxmd.com/read/28940523/epidemiology-of-helicobacter-pylori-infection-in-asymptomatic-schoolchildren-in-bhutan
#9
Sonam Wangda, James M Richter, Pema Kuenzang, Kinley Wangchuk, Tashi Choden, Karma Tenzin, Hoda M Malaty
AIM: Bhutan is a small mountainous country between Tibet and India with relatively homogenous population. According to the World Health Organization, gastric cancer is the most frequent cause of cancer death in Bhutan. This study examined the prevalence of Helicobacter pylori among children in Bhutan with emphasis on water source and living conditions. METHODS: A cross-sectional sero-epidemiologic study was conducted among schoolchildren who attended public schools in Thimphu, Bhutan...
September 22, 2017: Helicobacter
https://www.readbyqxmd.com/read/28940815/helicobacter-pylori-eradication-rates-of-concomitant-and-sequential-therapies-in-korea
#10
Seung Young Kim, Sang Woo Lee, Jung Wan Choe, Sung Woo Jung, Jong Jin Hyun, Young Kul Jung, Ja Seol Koo, Hyung Joon Yim
BACKGROUND: The efficacy of the standard triple therapy for Helicobacter pylori eradication has decreased to an unacceptable level. We aimed to compare the efficacy of sequential and concomitant therapies as for the first-line treatments for H. pylori eradication and analyzed the effect of clarithromycin resistance on the eradication rates. MATERIALS AND METHODS: Four hundred and seventy-eight patients with H. pylori infection were randomly assigned to either concomitant therapy (amoxicillin 1000 mg with clarithromycin 500 mg, metronidazole 500 mg, and pantoprazole 40 mg twice daily for 10 days) or sequential therapy (amoxicillin 1000 mg with pantoprazole 40 mg twice daily for 5 days, followed by clarithromycin 500 mg with metronidazole 500 mg and pantoprazole 40 mg twice daily for 5 days)...
September 21, 2017: Helicobacter
https://www.readbyqxmd.com/read/28913872/high-primary-antibiotic-resistance-of-helicobacter-pylori-strains-isolated-from-dyspeptic-patients-a-prevalence-cross-sectional-study-in-spain
#11
Fernando Macías-García, José Llovo-Taboada, Mario Díaz-López, Iria Bastón-Rey, Juan Enrique Domínguez-Muñoz
BACKGROUND: The rate of H. pylori resistance to different antibiotics is increasing and determines the selection of eradication therapy. The aim of this study was to determine the resistance patterns of H. pylori strains in our area. METHODS: Biopsies from gastric corpus for microbiological culture and antibiotic resistance were obtained in patients undergoing upper gastrointestinal endoscopy for dyspepsia. Selective Agar Pylori for isolation of the bacteria and Agar Mueller-Hinton supplemented with blood to test the sensitivity to antibiotics were used...
September 15, 2017: Helicobacter
https://www.readbyqxmd.com/read/28884937/a-japanese-population-based-meta-analysis-of-vonoprazan-versus-ppi-for-helicobacter-pylori-eradication-therapy-is-superiority-an-illusion
#12
REVIEW
Shou Quan Dong, Tikka Prabhjot Singh, Xin Wei, Huang Yao, Hong Ling Wang
BACKGROUND: Vonoprazan (VPZ) is a novel acid suppressant that has been used in Helicobacter pylori (H. pylori) eradication therapies in recent years. However, the efficacy and safety of VPZ vs proton-pump inhibitor (PPI) in H. pylori eradication therapies remain controversial. OBJECTIVE: To perform a meta-analysis in order to assess the efficacy and safety of VPZ vs PPI for H. pylori eradication. MATERIALS AND METHODS: The PubMed, EMBASE, and Cochrane Library databases were searched up to July 10, 2017, for relevant randomized controlled trials (RCTs) and nonrandomized clinical studies (NRCTs)...
September 8, 2017: Helicobacter
https://www.readbyqxmd.com/read/28851031/immunologic-properties-and-therapeutic-efficacy-of-a-multivalent-epitope-based-vaccine-against-four-helicobacter-pylori-adhesins-urease-lpp20-hpaa-and-cagl-in-mongolian-gerbils
#13
Le Guo, Runting Yin, Guangxian Xu, Xiaojuan Gong, Zisong Chang, Dantong Hong, Hongpeng Liu, Shuqin Ding, Xuebo Han, Yuan Li, Feng Tang, Kunmei Liu
BACKGROUND: Therapeutic vaccination is a desirable alternative for controlling Helicobacter pylori (H. pylori) infection. Attachment to the gastric mucosa is the first step in establishing bacterial colonization, and adhesins, which are on the surface of H. pylori, play a pivotal role in binding to human gastric mucosa. MATERIALS AND METHODS: In the present study, we constructed a multivalent epitope-based vaccine named CFAdE with seven carefully selected antigenic fragments from four H...
August 29, 2017: Helicobacter
https://www.readbyqxmd.com/read/28771894/effect-on-helicobacter-pylori-eradication-therapy-against-gastric-cancer-in-japan
#14
Momoko Tsuda, Masahiro Asaka, Mototsugu Kato, Rumiko Matsushima, Kenji Fujimori, Kozo Akino, Shogo Kikuchi, Yingsong Lin, Naoya Sakamoto
BACKGROUND: In Japan, there have been approximately 50 000 deaths from gastric cancer annually for over 40 years with little variation. It has been reported that most gastric cancers in Japan are caused by Helicobacter pylori infection. H. pylori eradication therapy was approved for patients with chronic gastritis by the Japanese national health insurance scheme in February 2013 for patients with an endoscopic diagnosis of chronic gastritis is positive for H. pylori. We examined the effect on gastric cancer death rate 4 years after expansion of health insurance coverage...
October 2017: Helicobacter
https://www.readbyqxmd.com/read/28653787/antibacterial-resistance-and-the-success-of-tailored-triple-therapy-in-helicobacter-pylori-strains-isolated-from-slovenian-children
#15
Tita Butenko, Samo Jeverica, Rok Orel, Matjaž Homan
BACKGROUND: Primary Helicobacter pylori (H. pylori) infection occurs predominantly in childhood. Antimicrobial resistance is the leading cause for H. pylori eradication failure. The aims of this study were (i) to establish for the first time the antimicrobial resistance of H. pylori strains in infected Slovenian children not previously treated for H. pylori infection and (ii) to evaluate the effectiveness of tailored triple therapy, assuming that eradication rate with tailored triple therapy will be >90%...
October 2017: Helicobacter
https://www.readbyqxmd.com/read/28891140/other-helicobacters-gastric-and-gut-microbiota
#16
REVIEW
Christelle Péré-Védrenne, Bram Flahou, Mun Fai Loke, Armelle Ménard, Jamuna Vadivelu
The current article is a review of the most important and relevant literature published in 2016 and early 2017 on non-Helicobacter pylori Helicobacter infections in humans and animals, as well as interactions between H. pylori and the microbiota of the stomach and other organs. Some putative new Helicobacter species were identified in sea otters, wild boars, dogs, and mice. Many cases of Helicobacter fennelliae and Helicobacter cinaedi infection have been reported in humans, mostly in immunocompromised patients...
September 2017: Helicobacter
https://www.readbyqxmd.com/read/28891139/helicobacter-pylori-infection-in-children
#17
REVIEW
Nicolas Kalach, Patrick Bontems, Josette Raymond
Helicobacter pylori infection in children differs from that in adults, from the point of view of epidemiology, host response, clinical features, related diseases, and diagnosis, as well as treatment strategies. The prevalence of H. pylori infection, in both children and adults, is decreasing in the Western World as well as in some developing countries, which contrasts with the increase in childhood asthma and allergic diseases. Recurrent abdominal pain is not specific during H. pylori infection in children...
September 2017: Helicobacter
https://www.readbyqxmd.com/read/28891138/epidemiology-of-helicobacter-pylori-infection
#18
REVIEW
Christophe Burucoa, Anthony Axon
The study of Helicobacter pylori genetic variability brought us interesting data on the history of mankind. Based on multilocus sequence typing and more recently on whole-genome sequencing, paleomicrobiology still attracts the attention of global researchers in relation to its ancestor roots and coexistence with humans. Three studies determining the prevalence of virulence factors illustrates the controversial results obtained since 30 years by studies trying to associate prevalence of different virulence markers and clinical outcomes of H...
September 2017: Helicobacter
https://www.readbyqxmd.com/read/28891137/treatment-of-helicobacter-pylori-infection-2017
#19
REVIEW
Anthony O'Connor, Dominique Lamarque, Javier P Gisbert, Colm O'Morain
This review summarizes important studies regarding Helicobacter pylori therapy published from April 2016 to April 2017. The main themes that emerge involve studies assessing the efficacy of bismuth and nonbismuth quadruple regimens. While in recent years, much of the emphasis on the use of bismuth has focussed on its utility in a second-line setting, an increasing number of studies this year have shown excellent efficacy in first-line therapy. The efficacy of bismuth as a second-line after sequential and concomitant therapy was particularly noteworthy...
September 2017: Helicobacter
https://www.readbyqxmd.com/read/28891136/helicobacter-pylori-infection-and-nonmalignant-diseases
#20
REVIEW
Olga Sjomina, Frederic Heluwaert, Driffa Moussata, Marcis Leja
A substantial decrease in Helicobacter pylori-associated peptic ulcer disease has been observed during the last decades. Drug-related ulcers as well as idiopathic ulcers are becoming predominant and are more refractory to treatment; however, H. pylori infection still plays an important role in ulcer bleeding and recurrence after therapy. The effect of H. pylori eradication upon functional dyspepsia symptoms has been reviewed in this article and generally confirms the results of previous meta-analyses. Additional evidence suggests a lack of impact upon the quality of life, in spite of improvement in symptoms...
September 2017: Helicobacter
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