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Helicobactor pylori

A Egeberg, L B Weinstock, E P Thyssen, G H Gislason, J P Thyssen
BACKGROUND: Rosacea is a common inflammatory facial skin condition. Recent genetic and epidemiologic studies have suggested pathogenic links between rosacea and gastrointestinal disorders, but data are limited. OBJECTIVES: The objective was to investigate the association between rosacea and celiac disease (CeD), Crohn's disease (CD), ulcerative colitis (UC), Helicobactor pylori (HP) infection, small intestinal bacterial overgrowth (SIBO), and irritable bowel syndrome (IBS), respectively...
August 8, 2016: British Journal of Dermatology
Fang Han, Li-Ping Sun, Shuang Liu, Qian Xu, Qiao-Yi Liang, Zhe Zhang, Hai-Chao Cao, Jun Yu, Dai-Ming Fan, Yong-Zhan Nie, Kai-Chun Wu, Yuan Yuan
Promoter methylation (PM) of RING-finger protein (RNF) 180 affects gastric cancer (GC) prognosis, but its association with risk of GC or atrophic gastritis (AG) is unclear. We investigated relationships between RNF180 PM and GC or AG, and the effects of Helicobactor pylori (H.pylori) infection on RNF180 PM. This study included 513 subjects (159 with GC, 186 with AG, and 168 healthy controls [CON]) for RNF180 PM analysis, and another 55 GC patients for RNF180 gene expression analysis. Methylation was quantified using average methylation rates (AMR), methylated CpG site counts (MSC) and hypermethylated CpG site counts (HSC)...
April 26, 2016: Oncotarget
Chih-Chi Chang, Wein-Shung Kuo, Ying-Chieh Chen, Chin-Lin Perng, Hwai-Jeng Lin, Yueh-Hsing Ou
Infection with Helicobacter pylori (H. pylori) has been linked to various gastro-intestinal diseases; nevertheless it remains to be clarified why only a minority of infected individuals develop illness. Studies from the West have indicated that the cagA gene and the associated EPIYA genotype of H. pylori is closely linked to the development of severe gastritis and gastric carcinoma; however, as yet no consistent correlation has been found among the bacteria from East Asia. In addition to genotype variation, the CagA protein undergoes fragmentation; however, the functional significance of fragmentation with respect to H...
2016: PloS One
Ah-Mee Park, Satoru Hagiwara, Daniel K Hsu, Fu-Tong Liu, Osamu Yoshie
We studied the role of galectin-3 (Gal3) in gastric infection by Helicobacter pylori We first demonstrated that Gal3 was selectively expressed by gastric surface epithelial cells and abundantly secreted into the surface mucus layer. We next inoculated H. pylori Sydney strain 1 into wild-type (WT) and Gal3-deficient mice using a stomach tube. At 2 weeks postinoculation, the bacterial cells were mostly trapped within the surface mucus layer in WT mice. In sharp contrast, they infiltrated deep into the gastric glands in Gal3-deficient mice...
April 2016: Infection and Immunity
Mahsa Salehi, Adam S Wenick, Hua Andrew Law, Jennifer R Evans, Peter Gehlbach
BACKGROUND: Central serous chorioretinopathy (CSC) is characterized by serous detachment of the neural retina with dysfunction of the choroid and retinal pigment epithelium (RPE). The effects on the retina are usually self limited, although some people are left with irreversible vision loss due to progressive and permanent photoreceptor damage or RPE atrophy. There have been a variety of interventions used in CSC, including, but not limited to, laser treatment, photodynamic therapy (PDT), and intravitreal injection of anti-vascular endothelial growth factor (anti-VEGF) agents...
2015: Cochrane Database of Systematic Reviews
Tadashi Terada
Using a computer database, the author investigated the histopathology of 10 000 consecutive gastric specimens collected in the last 12 years 2002-2013 at his pathology laboratory in a relatively large hospital in Japan. Examination of histological sections was done when appropriate. The gastric specimens were made up of 8579 benign conditions and 1421 malignant lesions. The latter comprised gastric carcinoma in 1342 cases (94.4%), gastrointestinal stromal tumor (GIST) in 34 (2.4%), mucosal-associated lymphoid tissue (MALT) lymphoma in 25 (1...
February 2016: Gastroenterology Report
Yao Chang, Yu-Yan Lan, Jenn-Ren Hsiao, Nan-Shan Chang
WW domain-containing oxidoreductase (WWOX) is a well-documented tumor suppressor protein that controls growth, survival, and metastasis of malignant cells. To counteract WWOX's suppressive effects, cancer cells have developed many strategies either to downregulate WWOX expression or to functionally inactivate WWOX. Relatively unknown is, in the context of those cancers associated with certain viruses or bacteria, how the oncogenic pathogens deal with WWOX. Here we review recent studies showing different strategies utilized by three cancer-associated pathogens...
March 2015: Experimental Biology and Medicine
Utpal Chandra De, Surajit Debnath, Ranjit Ghosh, Surajit Debnath
OBJECTIVE: To explore anti-enteric properties of Dillenia pentagyna Roxb. (D. pentagyna) fruit extract fractions of different polarities by comparative antimicrobial activity against municipal sewage microflora and to assess its urease inhibition potential. METHODS: Different polar fractions of D. pentagyna fruit extracts were studied by antimicrobial susceptibility test with several adjustments in this resource limited setup. Tests were done against municipal sewage microbes at various bacterial load (initially with 1...
September 2014: Asian Pacific Journal of Tropical Medicine
Marcella Pedullà, Vincenzo Fierro, Ester Del Tufo, Rossella Alfano, Maria Triassi, Laura Perrone
BACKGROUND: The epidemiological decrease of Helicobacter pylori (Hp) infection has been recently associated to the increase of several extra-intestinal allergic disorders. OBJECTIVE: We investigated the role of specific Hp IgG production in the development of IgE or not IgE mediated food allergy (FA) in children affected by atopic dermatitis (AD). METHODS: From January 2010 to July 2013, 290 South Italian children, aged between 26 and 142 months, were consecutively referred to the Pediatric Clinic of the Pediatric Department at Second University of Naples and were diagnosed as affected by AD...
August 2014: United European Gastroenterology Journal
Xiuming Liang, Jiping Zeng, Lixiang Wang, Li Shen, Shuyan Li, Lin Ma, Xinyu Ci, Jingya Yu, Mutian Jia, Yundong Sun, Zhifang Liu, Shili Liu, Wenjuan Li, Han Yu, Chunyan Chen, Jihui Jia
Gastric epithelial cell malignant transformation induced by Helicobactor Pylori contributes to tumor development, but the underlying mechanisms for this remain unclear. Here we demonstrate that RBP2, a newly identified histone demethylase, can be induced by CagA via PI3K/AKT-Sp1 pathway depending on AKT phosphorylation. Sp1 directly binds to RBP2 promoter and enhances its expression then the upregulated RBP2 significantly increases Cyclin D1 transcription, which contributes to gastric epithelial cell malignant transformation...
July 30, 2014: Oncotarget
Joohee Jung, Jae Sue Choi, Choon-Sik Jeong
Helicobacter pylori (H. pylori) is the most important factor of gastric disease in clinical practice. Moreover, smoking, stress and a poor diet may be additive factors for gastric damage. With these factors, increasing infection of H. pylori triggers gastritis, gastric ulcers and gastric cancer. To develop a new protective agent, we are concerned with plant-derived extract. The extract of Coptis chinensis (C. chinensis) and its constituents were investigated to assess their protective activities against gastric damage...
March 2014: Toxicological Research
Pallavi Rajput, Deshvir Singh, Kamla Pathak
The study was aimed to develop a bifunctional single unit capsular system containing gastroretentive funicular cylindrical system (FCS) for controlled local delivery of clarithromycin and immediate release of ranitidine HCl. A 2(3) full factorial design was used to prepare gastroretentive FCS of clarithromycin using polyacrylamide (PAM), HPMC E15LV and Carbopol 934 P. The FCSs were evaluated for % cumulative drug release, floating time and in vitro detachment stress. Among the eight formulations, FCS5 (containing PAM and Carbopol 934 P at high and HPMC E15LV at low levels) showed % cumulative drug release of 97...
January 30, 2014: International Journal of Pharmaceutics
Majed M Masadeh, Ahmad S Alkofahi, Karem H Alzoubi, Haitham N Tumah, Kamal Bani-Hani
CONTEXT: Natural flora are considered a major source of new agents for the treatment of Helicobactor pylori. The plants used in this study were selected based on previous traditional use. OBJECTIVE: In this study, we evaluated the effect of extracts of 16 medicinal plants grown in Jordan against clinical isolates of H. pylori. MATERIALS AND METHODS: Tested plant extracts included Aloysia triphylla (L'Her.) Britton (Verbenaceae), Anethum graveolens L...
May 2014: Pharmaceutical Biology
Naba Raj Mainali, Madan Raj Aryal, Ravi Shahu Khal, Richard Alweis
PATIENT: Female, 91 FINAL DIAGNOSIS: Low-grade gastric MALT lymphoma Symptoms: Recurrent epigastric and right upper quadrant dyscomfort Medication: Rituximab Clinical Procedure: esophagogastroduodenoscopy • gastric biopsy Specialty: Gastroenterology. OBJECTIVE: Unusual or unexpected effect of treatment. BACKGROUND: Mucosa associated lymphoid tissue (MALT) lymphoma can occur in any extranodal organ or tissue, stomach being the common site...
2013: American Journal of Case Reports
Weidong Zhao, Xiaoqin Zhong, Xinying Zhuang, Hongmei Ji, Xinxin Li, Anqing Li, Ruicai Wang, Jianyou Zhu, Yanqing Li
The aim of this study was to assess the effect of Helicobactor pylori (H. pylori) infection and drug therapy on functional dyspepsia (FD) symptoms and gastrointestinal eosinophil count. In this study, 215 continuous FD patients fulfilling Rome III criteria were enrolled. The patients were divided into a H. pylori-positive group and a H. pylori-negative group. The H. pylori-positive group was divided into H. pylori-eradicated and H. pylori-uneradicated groups following H. pylori-eradication treatment, and the H...
July 2013: Experimental and Therapeutic Medicine
Zhiying Ou, Liya Xiong, Ding-You Li, Lanlan Geng, Lixia Li, Peiyu Chen, Min Yang, Yongmei Zeng, Zhenwen Zhou, Huimin Xia, Sitang Gong
BACKGROUND: Numerous diagnostic tests are available to detect Helicobactor pylori (H. pylori). There has been no single test available to detect H. pylori infection reliably. We evaluated the accuracy of a new fluorescence quantitative PCR (fqPCR) for H. pylori detection in children. METHODS: Gastric biopsy specimens from 138 children with gastritis were sent for routine histology exam, rapid urease test (RUT) and fqPCR. 13C-urea breath test (13C-UBT) was carried out prior to endoscopic procedure...
2013: BMC Gastroenterology
Chun-Ling Jia, Guang-Shui Jiang, Chun-Hai Li, Cui-Rong Li
BACKGROUND: Data on the role of dental plaque in the transmission of Helicobactor pylori have varied. Furthermore, there has been few reports on the relationship between dental plaque control and H. pylori infection of gastric mucosa. The purpose of this study was to elucidate this potential relationship. METHODS: The 13C urea breath test was conducted on 56 subjects who received dental plaque control and 51 subjects who did not. RESULTS: The prevalence of H...
October 2012: Texas Dental Journal
Xiao-Li Shu, Hai-Ying Cheng, Ling-Rong Yang, Xu-Ping Zhang, Yan-Yi Zhang, Mi-Zu Jiang
OBJECTIVE: To study the value of multiple Helicobacter pylori (H.pylori) antibody detection by protein array in the diagnosis of H.pylori infection in children. METHODS: Biopsy specimens obtained by gastroscopy from 120 children with digestive system symptoms were detected by rapid urease test (RUT) and modified Giemsa staining. Positivity in both RUT and Giemsa staining was the "gold criterion" of H.pylori infection. Serum samples of these patients were obtained and the antibodies against cytotoxin associated gene A protein (CagA), vacuolating toxin A (VacA), urease, heat shock protein 60 (Hsp60) and RdxA (nitroreductase) were detected by protein array technique...
September 2011: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
Carolina A Serrano, Eduardo Talesnik, Alfredo Peña, Antonio Rollán, Ignacio Duarte, Javiera Torres, Daniela Majerson, Helly Einisman, Paola Viviani, Paul R Harris
OBJECTIVES: We evaluated allergy/hypersensitivity clinical markers and their correlation with Helicobactor pylori infection in children and adults to analyze how early acquisition of H. pylori could modulate allergic disorder expression. PATIENTS AND METHODS: H. pylori presence was assessed by the rapid urease test and histology of antrum biopsies in 165 patients. Skin tests, serum IgE, and two clinical allergy questionnaires were performed. Allergy severity was operationally defined using a combined score...
August 2011: European Journal of Gastroenterology & Hepatology
Toru Horii, Tomoyuki Koike, Yasuhiko Abe, Ryosuke Kikuchi, Hiroyuki Unakami, Katsunori Iijima, Akira Imatani, Shuichi Ohara, Tooru Shimosegawa
BACKGROUND AND AIMS: Barrett's esophageal cancer is usually included in gastroesophageal (GE) junction adenocarcinoma in Japanese people. No study on the pathogenesis of Barrett's esophageal cancer in comparison with GE junction adenocarcinoma other than Barrett's esophageal cancer has been reported in Japan. The aim of this study was to evaluate the clinical and pathological characteristics and gastric acid secretion of Barrett's esophageal cancer and GE junction adenocarcinoma other than Barrett's esophageal cancer in Japanese subjects...
June 2011: Scandinavian Journal of Gastroenterology
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