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https://www.readbyqxmd.com/read/29156732/dietary-inflammatory-index-and-the-risk-of-gastric-cancer-in-a-korean-population
#1
Sunghee Lee, Jeonghee Lee, Il Ju Choi, Young-Woo Kim, Keun Won Ryu, Young-Il Kim, Jin-Kyoung Oh, Binh Thang Tran, Jeongseon Kim
We aimed to investigate the association with the Dietary Inflammatory Index (DII™) on the risk of gastric cancer and whether histological type modifies this association. From March 2011 to December 2014, 388 cases and 776 controls were enrolled at the National Cancer Center. Utilizing a food frequency questionnaire, thirty-five food components were used to score the DII. The tertile distribution of DII for controls was as follows: T1: <0.96, T2: 0.96-2.97, and T3: ≥2.97. To investigate the association between DII and the gastric cancer risk, multivariable logistic models were constructed...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156505/cross-reactivity-of-polyclonal-antibodies-against-canavalia-ensiformis-jack-bean-urease-and-h-pylori-urease-subunit-a-fragments
#2
Zbigniew Jerzy Kaminski, Inga Relich, Iwona Konieczna, Wieslaw Kaca, Beata Kolesinska
Overlapping decapeptide fragments of H. pylori urease subunit A (UreA) were synthesized and tested with polyclonal antibodies against Canavalia ensiformis (Jack bean) urease. The linear epitopes of UreA identified using the dot blot method were then examined using epitope mapping. For this purpose, series of overlapping fragments of UreA, frameshifted +/- 4 amino acid residues were synthesized. Most of the UreA epitopes which reacted with the Jack bean urease polyclonal antibodies had been recognized in previous studies by monoclonal antibodies against H...
November 20, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/29155519/quantitative-changes-of-gastric-mucosa-during-carcinogenesis-using-stereological-methods
#3
Zahra Heidari, Hamidreza Mahmoudzadeh-Sagheb, Mahdieh Narouei
PURPOSE: To investigate the effects of helicobacter pylori (H. pylori) infection on the quantitative changes of gastric mucosa in cancerous and precancerous lesions using stereological methods. METHODS: One hundred and twenty-two gastric samples were studied. After determination of H. pylori infection, 42 gastric tissues of intestinal metaplasia (IM) patients, 38 specimens from dysplasia (DYS), and 42 specimens from gastric cancer (GC) types were selected from the pathology archive of Imam Ali Hospital, Zahedan, Iran...
July 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29155082/association-of-gastric-intestinal-metaplasia-and-east-asian-ethnicity-with-the-risk-of-gastric-adenocarcinoma-in-a-u-s-population
#4
Alyssa Y Choi, Lisa L Strate, Matthew C Fix, Rodney A Schmidt, Alexander R Ende, Matthew M Yeh, John M Inadomi, Joo Ha Hwang
BACKGROUND AND AIMS: Although the incidence of gastric cancer is higher than esophageal cancer in the United States, no screening or surveillance guidelines exist. The aim of this study is to evaluate the association between gastric intestinal metaplasia and the risk of gastric cancer in a U.S. tertiary care system with a large immigrant population. METHODS: This is a retrospective case-control study with cases of biopsy-proven gastric cancer matched (by age and gender) to controls without gastric cancer who had undergone EGD...
November 16, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29154808/genetic-host-factors-in-helicobacter-pylori-induced-carcinogenesis-emerging-new-paradigms
#5
REVIEW
Michiel C Mommersteeg, Jun Yu, Maikel P Peppelenbosch, Gwenny M Fuhler
Helicobacter Pylori is a gram negative rod shaped microaerophilic bacterium that colonizes the stomach of approximately half the world's population. Infection with c may cause chronic gastritis which via a quite well described process known as Correas cascade can progress through sequential development of atrophic gastritis, intestinal metaplasia and dysplasia to gastric cancer. H. pylori is currently the only bacterium that is classified as a class 1 carcinogen by the WHO, although the exact mechanisms by which this bacterium contributes to gastric carcinogenesis are still poorly understood...
November 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29153619/the-use-of-stool-specimens-reveals-helicobacter-pylori-strain-diversity-in-a-cohort-of-adolescents-and-their-family-members-in-a-developed-country
#6
Brendan Dolan, Lucy Burkitt-Gray, Stephen Shovelin, Billy Bourke, Brendan Drumm, Marion Rowland, Marguerite Clyne
Helicobacter pylori infection occurs within families but the transmission route is unknown. The use of stool specimens to genotype strains facilitates inclusion of complete families in transmission studies. Therefore, we aimed to use DNA from stools to analyze strain diversity in H. pylori infected families. We genotyped H. pylori strains using specific biprobe qPCR analysis of glmM, recA and hspA. Concentration of H. pylori organisms before DNA isolation enhanced subsequent DNA amplification. We isolated H...
November 13, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/29151783/gastric-microbiota-tracing-the-culprit
#7
REVIEW
Cristian Vasile Petra, Aronel Rus, Dan Lucian Dumitraşcu
The gastric environment has been long time considered bacteria-free, but the discovery of Helicobacter pylori (H. pylori) in 1982 superseded this conception. Over the last decades new diagnostic methods have been developed, starting with culture-dependent and advancing to culture-independent ones. These modern techniques provide new insight into the composition and influence of this ecosystem on the entire gastrointestinal tract. H. pylori is no longer considered the only microorganism in the stomach, other non-H...
2017: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29151351/immucillins-in-infectious-diseases
#8
Gary B Evans, Peter C Tyler, Vern L Schramm
Transition state theory proposes that stable chemical mimics of enzymatic transition states will be powerful inhibitors of their cognate enzymes. The Immucillins are chemically stable analogues that mimic the ribocation and leaving-group features of N-ribosyltransferase transition states. Infectious disease agents often rely on ribosyltransferase chemistry in pathways involving precursor synthesis for nucleic acids, salvage of nucleic acid precursors from the host or synthetic pathways with nucleoside intermediates...
November 19, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/29151317/prevalence-and-risk-factors-for-helicobacter-pylori-infection-in-southwest-china-a-study-of-health-examination-participants-based-on-13c-urea-breath-test
#9
Jie Liu, Yonghong Wang, Qinghua Zhao, Rong Luo, Mingzhao Xiao, Mingjun Zhang, Weibo Xie
Background/aim: Helicobacter pylori (H. pylori) has a high prevalence in developing countries. We aimed to investigate the current prevalence of H. pylori, as well as its potential serum risk factors, in a population from southwest China.Materials and methods: This cross-sectional study included 10,912 subjects who received medical examinations at the First Affiliated Hospital of Chongqing Medical University in 2014. Data regarding physical examinations and biochemical measurements were collected, and H. pylori infection was diagnosed with a 13C-urea breath test...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29149904/concomitant-sequential-and-7-day-triple-therapy-in-first-line-treatment-of-helicobacter-pylori-infection-in-korea-study-protocol-for-a-randomized-controlled-trial
#10
Hyuk Lee, Beom Jin Kim, Sang Gyun Kim, Jin Il Kim, Il Ju Choi, Yong Chan Lee, Jae G Kim, Jae J Kim
BACKGROUND: Most international guidelines recommend triple-therapy regimens consisting of a proton pump inhibitor, clarithromycin, and amoxicillin/metronidazole for at least 7 days for the eradication of Helicobacter pylori. However, the efficacy of 7-day clarithromycin-based standard triple therapy for H. pylori infection is currently unacceptable in Korea. In this study, we will compare the efficacy and safety of 7-day standard triple therapy, 10-day sequential therapy, and 10-day concomitant therapy for the first-line treatment of H...
November 17, 2017: Trials
https://www.readbyqxmd.com/read/29148176/differential-proteomic-analysis-reveals-protein-networks-and-pathways-that-may-contribute-to-helicobacter-pylori-fkbp-type-ppiase-associated-gastric-diseases
#11
Yanmei Zhu, Yuehua Gong, Aodi Li, Moye Chen, Dan Kang, Jun Liu, Yuan Yuan
PURPOSE: Though Helicobacter pylori (H. pylori) has been classified as class I carcinogen, key virulence factor generated by H. pylori that causes gastric cancer remains to be fully determined. Recently, we identified a gastric cancer-associated H. pylori gene, peptidylprolyl isomerase-FK506 binding protein (PPIase-FKBP), and showed that PPIase-FKBP was capable of inducing oncogenic transformation of gastric epithelial cells. But its mechanism was unclear. EXPERIMENTAL DESIGN: We carried out a comparative proteomic analysis of human gastric epithelial cells that either express PPIase-FKBP or green fluorescent protein (GFP) using two-dimensional (2-D) gel electrophoresis and then matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS/MS)...
November 16, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/29147879/increased-risk-for-colon-polyps-in-patients-with-reflux-disease
#12
Amnon Sonnenberg, Kevin O Turner, Robert M Genta
BACKGROUND: Previous studies have found an increased risk for colonic neoplasm in patients with Barrett's esophagus. It is unknown whether such risk applies similarly to other types of gastroesophageal reflux disease (GERD). AIMS: To test whether GERD represents a risk factor for the occurrence of colon polyps. METHODS: The Miraca Life Sciences Database is a large national electronic repository of histopathologic records of patients distributed throughout the entire USA...
November 17, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29145789/helicobacter-pylori-controls-nlrp3-expression-by-regulating-hsa-mir-223-3p-and-il-10-in-cultured-and-primary-human-immune-cells
#13
Suneesh Kumar Pachathundikandi, Steffen Backert
Inflammasome-mediated production of mature IL-1β and IL-18 cytokines represents an important innate immune response against infecting pathogens. Helicobacter pylori, one of the most successful and persistent human pathogens, induces severe inflammation leading to gastritis and more serious gastric diseases. H. pylori modulates different immune responses for its survival and inflammasome signaling is manipulated by the cag pathogenicity island ( cagPAI), urease and VacA cytotoxin. Here we report that H. pylori regulates NLRP3 expression, an inflammasome forming regulator, in infected THP-1 monocytes...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/29143724/gastric-lymphoma-association-with-helicobacter-pylori-outer-membrane-protein-q-hopq-and-cytotoxic-pathogenicity-activity-island-cpai-genes
#14
J Yakoob, Z Abbas, Z Ahmad, K Tariq, S Awan, K Mustafa, R Khan
B-cell non-Hodgkin lymphoma (B-cell NHL) is the second commonest malignancy in the stomach. We determined the distribution of Helicobacter pylori outer membrane protein Q (HopQ) allelic type, cytotoxin-associated gene (cag)-pathogenicity activity island (cag-PAI) and vacuolation activating cytotoxin A (vacA) genes, respectively, in patients with B-cell NHL. We also compared them with their distribution in non-ulcer dyspepsia (NUD). H. pylori was cultured from gastric biopsy tissue obtained at endoscopy. Polymerase chain reaction was performed...
November 16, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/29138961/blastocystis-subtypes-isolated-from-irritable-bowel-syndrome-patients-and-co-infection-with-helicobacter-pylori
#15
Ayman A El-Badry, Wegdan M Abd El Wahab, Doaa A Hamdy, Alaa Aboud
Irritable bowel syndrome (IBS) is a chronic functional gastrointestinal disease presenting clinically by abdominal pain with alteration of bowel habits. Although IBS has uncertain etiology, chronic gut inflammation due to persistent exposure to an infectious agent including Blastocystis sp. was proposed. The aim of this study was to detect the prevalence of Blastocystis sp. subtype (ST) isolated from stool of IBS patients and to assess Blastocystis sp. and H. pylori co-infection in IBS patients from Beni-Suef Governorate, Egypt...
November 14, 2017: Parasitology Research
https://www.readbyqxmd.com/read/29138921/world-trends-for-h-pylori-eradication-therapy-and-gastric-cancer-prevention-strategy-by-h-pylori-test-and-treat
#16
REVIEW
Hidekazu Suzuki, Hideki Mori
Helicobacter pylori-associated gastritis leads to the development of gastric cancer. Kyoto global consensus report on H. pylori gastritis recommended H. pylori eradication therapy to prevent gastric cancer. To manage H. pylori infection, it is important to choose the appropriate regimen considering regional differences in resistance to clarithromycin and metronidazole. Quinolones and rifabutin-containing regimens are useful as third- and fourth-line rescue therapies.
November 14, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/29138530/group-2-innate-lymphoid-cells-are-involved-in-skewed-type-2-immunity-of-gastric-diseases-induced-by-helicobacter-pylori-infection
#17
Rong Li, Xiao-Xia Jiang, Lin-Fang Zhang, Xiao-Ming Liu, Ting-Zi Hu, Xiu-Juan Xia, Ming Li, Can-Xia Xu
H. pylori induces a complicated local and systematic immune response and contributes to the carcinogenesis of gastric cancer. A primary type 1 immune response is evoked by H. pylori since its occurrence. However, it is not unusual that an inhibitory immunity is dominant in H. pylori-associated diseases, which are promoted by the formation of immunosuppressive microenvironment. But whether group 2 innate lymphoid cells (ILC2s) plays a critical role in H. pylori-induced skewed type 2 immunity is still unclear...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29138514/changing-trends-in-the-prevalence-of-h-pylori-infection-in-japan-1908-2003-a-systematic-review-and-meta-regression-analysis-of-170-752-individuals
#18
Chaochen Wang, Takeshi Nishiyama, Shogo Kikuchi, Manami Inoue, Norie Sawada, Shoichiro Tsugane, Yingsong Lin
Changing trends in the prevalence of H. pylori infection in the general population over time are thought to be the main driving force behind the declining gastric cancer mortality in Japan. However, whether the prevalence of H. pylori infection itself shows a birth-cohort pattern needs to be corroborated. We performed a systematic review of studies that reported the prevalence of H. pylori infection among Japanese individuals. Meta-regression was conducted in the framework of a generalized additive mixed model (GAMM) to account for heterogeneity in the prevalence of H...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29138101/primary-antibiotic-resistance-of-helicobacter-pylori-in-chinese-patients-a-multi-region-prospective-7-year-study
#19
Dong-Sheng Liu, You-Hua Wang, Zhi-Rong Zeng, Zhen-Yu Zhang, Hong Lu, Jian-Ming Xu, Yi-Qi Du, Yan Li, Jiang-Bin Wang, San-Ping Xu, Ye Chen, Chun-Hui Lan, Hong Cheng, Ming-de Jiang, Ling-Xia Zhang, Li-Juan Huo, Shi-Yao Chen, Guo-Xin Zhang, Kai-Chun Wu, Xuan Zhu, You-Xiang Chen, Yin Zhu, Xu Shu, Yong Xie, Nong-Hua Lu
OBJECTIVES: To explore the characteristics of H. pylori resistance in China and the association between antibiotic resistance and several clinical factors. METHODS: H. pylori strains were collected from patients in 13 provinces/cities in China between 2010 and 2016. Demographic data including type of disease, geographic area, age, gender and isolation year were collected to analyse their association with antibiotic resistance. Antibiotic resistance was detected using the Epsilometer test and the Kirby-Bauer disk diffusion method...
November 11, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29138097/gastric-microbiota-an-emerging-player-in-helicobacter-pylori-induced-gastric-malignancies
#20
J Luis Espinoza, Ayumi Matsumoto, Hirokazu Tanaka, Itaru Matsumura
The complex diversity of nonpathogenic microbes that colonize the human body, known as microbiota, exert considerable effects on physiological homeostasis, and immune regulation. Helicobacter pylori (H. pylori) is a bacterium that frequently colonizes human stomach and is a major pathogenic agent for peptic ulcer diseases, gastric cancer, and mucosa-associated lymphoid tissue (MALT) lymphoma. Due to its acidic pH and peristaltic movements, the stomach has been considered a hostile environment for most microorganisms, however various commensal microorganisms are capable of colonizing the stomach to form a stomach niche...
November 11, 2017: Cancer Letters
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