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https://www.readbyqxmd.com/read/28644872/helicobacter-pylori-gene-silencing-in-vivo-demonstrates-urease-is-essential-for-chronic-infection
#1
Aleksandra W Debowski, Senta M Walton, Eng-Guan Chua, Alfred Chin-Yen Tay, Tingting Liao, Binit Lamichhane, Robyn Himbeck, Keith A Stubbs, Barry J Marshall, Alma Fulurija, Mohammed Benghezal
Helicobacter pylori infection causes chronic active gastritis that after many years of infection can develop into peptic ulceration or gastric adenocarcinoma. The bacterium is highly adapted to surviving in the gastric environment and a key adaptation is the virulence factor urease. Although widely postulated, the requirement of urease expression for persistent infection has not been elucidated experimentally as conventional urease knockout mutants are incapable of colonization. To overcome this constraint, conditional H...
June 23, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28644345/yield-of-endoscopy-in-pediatric-gastroparesis
#2
Tara A Altepeter, Stephen Shaffer
OBJECTIVES: The aim of the study was to quantify the diagnostic yield of upper endoscopy in children with gastroparesis and to develop a clinical model for gastroparesis using common symptoms and screening blood tests. METHODS: We retrospectively reviewed charts of 196 patients of age 4 to 18 years evaluated for gastroparesis between 2009 and 2013. All patients completed a standard solid-phase gastric emptying scan and upper endoscopy within a 12-month period. We analyzed gross and histologic endoscopy findings...
July 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28643319/-progress-of-the-application-of-optical-coherence-tomography-in-gastrointestinal-tumor-surgery
#3
Yongsheng Li, Hao Liu, Haipeng Huang, Yu Zhu, Haijun Deng, Jiang Yu, Site Luo, Li Huo, Li Lin, Huikai Xie, Guoxin Li
Optical coherence tomography (OCT) is a real-time, cross-sectional optical imaging technology. It is analogous to ultrasonography, except that OCT uses light waves instead of sound waves, and can provide three-dimensional morphological images of living tissues with a micrometer resolution. Through the use of endoscopes, needles, catheters and laparoscopes, OCT has demonstrated tremendous imaging potential in tumor surgery. The current studies suggest that OCT has potential for clinical applications in the following fields of gastrointestinal tumor surgery: (1) Early tumor detection and diagnosis: OCT can distinguish differences between polyp tissue, normal tissue and malignant tissue...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28643070/laparoscopic-revision-of-billroth-ii-with-braun-anastomosis-into-roux-en-y-anatomy-in-a-patient-with-intestinal-malrotation
#4
Fabio Garofalo, Omar Abouzahr, Henri Atlas, Ronald Denis, Pierre Garneau, Hai Huynh, Radu Pescarus
INTRODUCTION: Various reconstructions of the gastro-intestinal tract have been described in the past after distal gastrectomy. Among these, a Billroth II (BII) anastomosis can be performed with the addition of the Omega entero-enterostomy that may theoretically reduce the alkaline reflux. Given the significant complications associated with this procedure such as biliary reflux, marginal ulceration, and afferent loop syndrome, a revision into a Roux-en-Y anatomy is generally recommended...
June 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28642748/helicobacter-hygiene-atopy-and-asthma
#5
REVIEW
Muhammad Miftahussurur, Iswan A Nusi, David Y Graham, Yoshio Yamaoka
The hygiene hypothesis links environmental and microbial exposures in early life to the prevalence of atopy, allergy, and asthma. Helicobacter pylori infection is typically acquired in childhood and acquisition of the infection is associated with poor household hygiene. Some population surveys have shown an inverse association between H. pylori infection and atopy, allergy, and asthma leading to the suggestion that H. pylori infection may be protective against disease; others consider it simply a biomarker for poor household hygiene...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28638893/chinese-herbal-decoction-as-a-complementary-therapy-for-atrophic-gastritis-a-systematic-review-and-meta-analysis
#6
Wen-Jie Fang, Xin-Ying Zhang, Bo Yang, Shu-Jing Sui, Min Chen, Wei-Hua Pan, Wan-Qing Liao, Ming Zhong, Qing-Cai Wang
BACKGROUND: Chinese herbal decoction (CHD) has been extensively used in the treatment of atrophic gastritis (AG) in China and other Far Eastern countries. We conducted a systematic review and meta-analysis to estimate the efficacy and safety of CHD in AG. MATERIALS AND METHODS: Pubmed, Embase, Cochrane central register of controlled trials (central), VIP, China National Knowledge Infrastructure, Sinomed, Wanfang data were searched (up to December 2015). Randomized controlled trials recruiting patients with AG comparing CHD (alone or with western medicine (WM)) with WM were eligible...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28638837/validation-of-a-novel-immunoline-assay-for-patient-stratification-according-to-virulence-of-the-infecting-helicobacter-pylori-strain-and-eradication-status
#7
Luca Formichella, Laura Romberg, Hannelore Meyer, Christian Bolz, Michael Vieth, Michael Geppert, Gereon Göttner, Christina Nölting, Wolfgang Schepp, Arne Schneider, Kurt Ulm, Petra Wolf, Ingrid Lisanne Holster, Ernst J Kuipers, Bernd Birkner, Erwin Soutschek, Markus Gerhard
Helicobacter pylori infection shows a worldwide prevalence of around 50%. However, only a minority of infected individuals develop clinical symptoms or diseases. The presence of H. pylori virulence factors, such as CagA and VacA, has been associated with disease development, but assessment of virulence factor presence requires gastric biopsies. Here, we evaluate the H. pylori recomLine test for risk stratification of infected patients by comparing the test score and immune recognition of type I or type II strains defined by the virulence factors CagA, VacA, GroEL, UreA, HcpC, and gGT with patient's disease status according to histology...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28629818/corydalis-hendersonii-hemsl-protects-against-myocardial-injury-by-attenuating-inflammation-and-fibrosis-via-nf-%C3%AE%C2%BAb-and-jak2-stat3-signaling-pathways
#8
Ruifeng Bai, Xu Yin, Xiao Feng, Yuan Cao, Yan Wu, Zhixiang Zhu, Chun Li, Pengfei Tu, Xingyun Chai
ETHNOPHARMACOLOGICAL RELEVANCE: Corydalis hendersonii Hemsl. (CH) with heat clearing and detoxifying effects are well described in Tibetan folk medicine. It has been used for centuries in China largely for the treatment of high altitude polycythemia, a pathophysiological condition referred to "plethora" in Tibetan medicine, hypertension, hepatitis, edema, gastritis, and other infectious diseases. AIM OF THE STUDY: To investigate the cardioprotective effects of Corydalis hendersonii extract in an ICR mouse model of myocardial ischemic injury...
June 16, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28629725/relationship-between-histopathological-status-of-the-helicobacter-pylori-infected-patients-and-proteases-of-h-pylori-in-isolates-carrying-diverse-virulence-genotypes
#9
Somayyeh Gharibi, Tahereh Falsafi, Masoud Alebouyeh, Nastaran Farzi, Farzam Vaziri, Mohamad Reza Zali
Helicobacter pylori is the main cause of several gastroduodenal diseases in Humans. Among various virulence factors of H. pylori, proteases may also be involved in its pathogenicity. In this study, relationship between proteolytic activity of H. pylori strains and histopathological changes of the stomach was investigated in the patients infected with strains carrying diverse virulence factors. H. pylori strains were isolated from the biopsies of 116 patients who referred to hospital for their gastroduodenal disorders, in Tehran, Iran...
June 16, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28623383/ethnopharmacological-uses-phytochemistry-biological-activities-and-biotechnological-applications-of-eclipta-prostrata
#10
REVIEW
Ill-Min Chung, Govindasamy Rajakumar, Ji-Hee Lee, Seung-Hyun Kim, Muthu Thiruvengadam
Eclipta prostrata belongs to a family of medicinal plants (Asteraceae) and plays a role in the treatment of several diseases, including infectious hepatitis, snake venom poisoning, gastritis, and respiratory diseases such as a cough and asthma. A number of compounds, including thiophene derivatives, steroids, triterpenes, flavonoids, polyacetylenes, polypeptides, and coumestans, have been isolated from E. prostrata. The plant functional compounds can act as reducing agent in the field of nanoparticle synthesis...
June 16, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28618744/comparative-analysis-of-selected-cagpai-genes-and-different-vaca-genotypes-in-iranian-and-turkish-h-pylori-positive-patients-suffering-from-gastric-adenocarcinoma-and-active-chronic-gastritis
#11
Ali Bahadori, Mohammad Hossein Somi, Figen Doran, Amirtaher Eftekharsadat, Suna Kizilyildirim, Mahsa Esmaeillou, Maryam Yaasi, Başak Bedir, Fatih Köksal
BACKGROUND/AIM: Helicobacter pylori is a pathogen that colonizes a majority of the world's population. Genetic diversity within the virulence genes of bacteria such as cagPAI and vacA may have a modified effect on the pathogenic potential of the bacteria. This study aimed to investigate which genes can be suggested as potentially related virulence factors for H. pylori-associated active chronic gastritis and stomach adenocarcinoma in the northwest of Iran and south of Turkey. MATERIALS AND METHODS: Formalin-fixed, paraffin-embedded stomach biopsy tissue samples were obtained from Iranian and Turkish patients from selected geographical regions...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28617713/gastric-emphysema-a-cannot-miss-emergency-medicine-diagnosis
#12
Sean D Murnan, Jill Miller, Anne Kuhn
The radiographic finding of gastric emphysema with portal venous gas is classically an ominous finding, associated with a high rate of mortality. Although classically the case, this imaging finding must be quickly correlated with the overall clinical picture, allowing for the essential differentiation between the highly lethal emphysematous gastritis and the much more benign gastric emphysema, each of which has drastically different management strategies. We report a case of gastric emphysema with portal venous gas likely attributable to a gastric outlet obstruction and gastric mucosal defect in a 17-year-old girl with a chief complaint of syncope that was diagnosed in the emergency department and treated conservatively...
June 14, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28616085/helicobacter-pylori-infection-old-and-new
#13
REVIEW
S Diaconu, A Predescu, A Moldoveanu, C S Pop, C Fierbințeanu-Braticevici
Helicobacter pylori is a spiral-shaped bacterium that grows in the digestive tract and may be present in more than half of the world's population. The clinical features of Helicobacter pylori range from asymptomatic gastritis to gastrointestinal malignancy. Mucosa-associated lymphoid tissue (MALT) lymphoma is a low-grade B-cell marginal zone lymphoma and Helicobacter pylori has been detected in more than 75% of the patients with MALT lymphoma. Many tests for the detection of Helicobacter pylori are available, including antibody tests, urea breath tests, stool antigen tests and endoscopic biopsies...
April 2017: Journal of Medicine and Life
https://www.readbyqxmd.com/read/28598064/emphysematous-gastritis-with-air-in-portal-venous-system
#14
Omesh Goyal, Ajesh Bansal, Prerna Goyal
Emphysematous gastritis is a rare but severe form of phlegmonous gastritis caused by gastric mucosal disruption and infection of stomach wall by gas-forming bacteria. Ingestion of corrosive substances is the most common predisposing factor, followed by alcohol abuse, abdominal surgery, diabetes and immunosuppression. Patients usually present with abdominal pain, vomiting, diarrhea, constipation and/or gastro-intestinal hemorrhage. Characteristic radiological findings include presence of gas in the gastric wall...
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28597288/safety-and-efficacy-of-endoscopic-submucosal-dissection-of-large-%C3%A2-3%C3%A2-cm-subepithelial-tumors-located-in-the-cardia
#15
Jun Li, Jian Tang, G W Lua, Jie Chen, Xingang Shi, Feng Liu, Zhaoshen Li
BACKGROUND: Upper gastrointestinal subepithelial tumors (SETs) may harbor potential malignancy. Although it is well recognized that large SETs should be resected, the treatment strategy remains controversial. Compared to surgical resection, endoscopic resection has many advantages such as less invasive, shorter hospital stay, lower costs, and better quality of life. However, Endoscopic resection of large SETs in the cardia is challenging. The purpose of this study was to evaluate the safety and efficacy of endoscopic submucosal dissection (ESD) in the treatment of such SETs...
June 8, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28596201/isolated-gastric-sarcoidosis-a-rare-entity
#16
Ronak Vashi Patel, Rachel W Winter, Walter W Chan, Jeffrey A Sparks
We present a case of isolated granulomatous gastritis in a 21-year-old woman. Initial symptoms included nausea, vomiting and inability to tolerate oral intake. An upper oesophagogastroduodenoscopy revealed nodular and thickened mucosa with histological findings of granulomatous gastritis. Infectious, inflammatory and malignant causes were excluded prior to making a diagnosis of gastric sarcoidosis.
June 8, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28592787/rare-gastric-lesions-associated-with-helicobacter-pylori-infection-a-histopathological-review
#17
Mee Joo
Helicobacter pylori infection is associated with chronic gastritis, peptic ulcer disease, gastric adenocarcinoma, and mucosa-associated lymphoid tissue lymphoma. However, some rare gastric lesions exhibiting distinctive histological features may also be associated with H. pylori infection, including lymphocytic gastritis, granulomatous gastritis, Russell body gastritis, or crystal-storing histiocytosis. Although diverse factors can contribute to their development, there is convincing evidence that H. pylori infection may play a pathogenic role...
June 5, 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28588876/increased-risk-for-metachronous-gastric-adenocarcinoma-following-gastric-malt-lymphoma-a-us-population-based-study
#18
Carolina Palmela, Cristina Fonseca, Rita Faria, Rute Baeta Baptista, Sofia Ribeiro, Alexandre Oliveira Ferreira
BACKGROUND: Gastric mucosa-associated lymphoid tissue lymphoma (gMALT) and gastric adenocarcinoma (GC) are long-term complications of chronic Helicobacter pylori (HP) gastritis. Treatment of HP infection induces remission in most patients with gMALT. Endoscopic follow-up is not currently endorsed after complete remission. However, the risk of GC in these patients is unclear. OBJECTIVE: The objective of this study is to estimate GC risk in gMALT patients. METHODS: The National Cancer Institute Surveillance, Epidemiology and End Results 13 (SEER) database-Nov 2014 Sub (1992-2012) was used to identify adult patients diagnosed with gMALT between 1992 and 2012...
June 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28587343/alteration-of-stomach-microbiota-compositions-in-the-progression-of-gastritis-induces-nitric-oxide-in-gastric-cell
#19
Tianyi Dong, Qiang Feng, Fengyan Liu, Lap Kam Chang, Xiangyu Zhou, Mingyong Han, Xingsong Tian, Ning Zhong, Shili Liu
Atrophic gastritis is considered to be an antecedent to intestinal metaplasia and gastric cancer. A previous study identified that Helicobacter pylori was absent at the severe atrophic gastritis stage, and alterations in the gastric microbial composition resembled those in gastric cancer. To explore the role of the bacteria absence of H. pylori in gastric carcinogenesis, in the current study, we compared the microbiota of clinically collected H. pylori-free gastric fluids from 30 patients with non-atrophic gastritis (N) and 22 patients with severe atrophic gastritis (S)...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28586284/a-patent-review-of-the-therapeutic-potential-of-isoflavones-2012-2016
#20
Hidayat Hussain, Ivan R Green
Isoflavones are well-studied natural products isolated from natural sources with interesting chemodiversity and possess a wide variety of biological effects. Moreover, chemical modifications based on the isoflavone scaffold, has generated synthetic chemodiversity to enhance the bioactivities of isoflavones. Areas covered: The current review summarizes the discovery of new chemotherapeutic agents possessing the isoflavone skeleton. This review incorporates patents filed between 2012 and 2016 mostly related to anticancer, antidiabetic, antimicrobial, anti-HIV, anti-gastric ulcer, anti-gastritis, antiparasitic and some other biological effects demonstrated by isoflavone analogs...
June 13, 2017: Expert Opinion on Therapeutic Patents
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