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https://www.readbyqxmd.com/read/29346827/efficacy-and-complications-of-submucosal-tunneling-endoscopic-resection-for-upper-gastrointestinal-submucosal-tumors-and-exploration-for-influencing-factors
#1
Shunzhe Song, Xu Wang, Shen Zhang, Yanxia Li, Xiaonan Zhang, Xufang Chu
BACKGROUND:  Submucosal tunneling endoscopic resection (STER) has emerged as a feasible technique for resecting upper gastrointestinal (GI) tract submucosal tumors (SMTs) through natural orifice transluminal endoscopic surgery. STER reduces the risk of postoperative perforation and abdominal infections and promotes rapid wound healing. The aim of this meta-analysis was to evaluate the safety and efficacy of STER for small (≤ 3.5 cm) upper GI SMTs and explore the potential factors influencing STER's efficacy and complication rate...
January 18, 2018: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/29341929/the-infection-of-red-seabream-iridovirus-in-mandarin-fish-siniperca-chuatsi-and-the-host-immune-related-gene-expression-profiles
#2
Xiaodan Liu, Nan Chen, Xiaojian Gao, Yingying Zhang, Xixi Li, Yue Zhang, Xuwen Bing, Hezhong Huang, Xiaojun Zhang
Red Sea bream iridovirus (RSIV) was initially isolated from marine fish, which belongs to Megalocytivirus, Iridoviridae. It can cause great economic losses in fish culture with high morbidity and mortality. In the present study, the pathogenicity and immune response associated with a RSIV genotype megalocytivirus infection were determined in mandarin fish (Siniperca chuatsi). Fish challenged showed typical clinical signs of iridovirus infection, including acute haemorrhages and enlarged visceral organs. Histopathological analysis revealed that extensive necrosis, vacuolization and inflammation were presented in the stomach, spleen, kidney and liver of the diseased fish...
January 13, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29331369/equisetum-telmateia-extracts-chemical-compositions-antioxidant-activity-and-antimicrobial-effect-on-the-growth-of-some-pathogenic-strain-causing-poisoning-and-infection
#3
Marzie Yeganegi, Farideh Tabatabaei Yazdi, Seyed Ali Mortazavi, Javad Asili, Behrooz Alizadeh Behbahani, Adel Beig Babaei
The aerial parts of Equisetum telmateia have been used as a source of biologically active compounds to treat inflammatory, diarrhea, stomach-ache, eczema and mouth infections in traditional medicine. The aim of this work is to evaluate the extraction yield, chemical compositions, antioxidant activity and antimicrobial activity of E. telmateia extracts on Staphylococcus aureus, Bacillus cereus, Escherichia coli, Salmonella typhi and Candida albicans. Chemical compositions E. telmateia was analyzed by high performance liquid chromatography (HPLC) using a C18 column...
January 10, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29331367/molecular-characterization-and-differential-expression-analysis-of-interleukin-1%C3%AE-from-ovis-aries
#4
Yi-Ming Shui, Shi-Ying Lu, Xing Guo, Xi-Lin Liu, Bao-Quan Fu, Pan Hu, Lin-Lin Qu, Nan-Nan Liu, Yan-Song Li, Lu-Lu Wang, Fei-Fei Zhai, Dan-Di Ju, Zeng-Shan Liu, Yu Zhou, Hong-Lin Ren
The interleukin-1 family is an important component of the innate immune system and plays an important role in regulating immune responses on the invasion of intracellular parasites in the acquired immune system. Interleukin 1β (IL-1β) is one of the members of the IL-1 family that predominantly activates downstream signaling pathways to play immunological functions of stimulating T and B lymphocyte activation and promoting the various syntheses of inflammatory substances in conjunction with other cytokines...
January 10, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29331315/ethnobotany-phytochemistry-and-pharmacology-of-arctotis-arctotoides-l-f-o-hoffm-a-review
#5
REVIEW
Md Moshfekus Saleh-E-In, Johannes Van Staden
ETHNOPHARMACOLOGICAL RELEVANCE: Arctotis arctotoides (Asteraceae) is part of the genus Arctotis. Arctotis is an African genus of approximately 70 species that occur widely in the African continent with diverse medicinal values. This plant is used for the treatment of indigestion and catarrh of the stomach, epilepsy, topical wounds and skin disorders among the ethnic groups in South Africa and reported to have a wide spectrum of pharmacological properties. AIM OF THE REVIEW: The aim of the present review is to appraise the botany, traditional uses, phytochemistry, pharmacological potential, analytical methods and safety issues of A...
January 10, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29327342/reduced-lysosomal-clearance-of-autophagosomes-promotes-survival-and-colonization-of-helicobacter-pylori
#6
Lin Zhang, Wei Hu, Chi H Cho, Francis K L Chan, Jun Yu, J Ross Fitzgerald, Cynthia K Y Cheung, Zhan G Xiao, Jing Shen, Long F Li, Ming X Li, Justin C Y Wu, Thomas K W Ling, Jason Y K Chan, Ko Ho, Gary Tse, Siew C Ng, Sidney Yu, Maggie H T Wang, Tony Gin, Hassan Ashktorab, Duane T Smoot, Sunny H Wong, Matthew T V Chan, William K K Wu
Evasion of autophagy is key for intracellular survival of bacteria in host cells, but its involvement in persistent infection by Helicobacter pylori, a bacterium identified to invade gastric epithelial cells, remains obscure. The aim of this study was to functionally characterize the role of autophagy in H. pylori infection. Autophagy was assayed in H. pylori-infected human gastric epithelium and the functional role of autophagy was determined via genetic or pharmacologic ablation of autophagy in mouse and cell line models of H...
January 12, 2018: Journal of Pathology
https://www.readbyqxmd.com/read/29327263/proton-pump-inhibitors-increase-the-susceptibility-of-mice-to-oral-infection-with-enteropathogenic-bacteria
#7
Eiichiro Yasutomi, Namiko Hoshi, Soichiro Adachi, Takafumi Otsuka, Lingling Kong, Yuna Ku, Haruka Yamairi, Jun Inoue, Tsukasa Ishida, Daisuke Watanabe, Makoto Ooi, Masaru Yoshida, Tomoya Tsukimi, Shinji Fukuda, Takeshi Azuma
BACKGROUND AND AIMS: Proton pump inhibitors (PPIs) are among the most frequently prescribed medications. Side effects including an increased risk of intestinal infections have been reported. It is assumed that PPIs can increase susceptibility to enteropathogens; however, the underlying mechanisms are unknown. Here in this study, we explored whether Lansoprazole (Laz), one of the PPIs, increases the susceptibility to enteropathogens, and further investigated the mechanism of it. METHODS: Mice were administered Laz intraperitoneally once daily and orally infected with Citrobacter rodentium (C...
January 11, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29319200/the-rise-and-fall-of-peptic-ulceration-a-disease-of-civilization
#8
REVIEW
Ian C Roberts-Thomson
Humans and Helicobacter pylori have evolved and adapted over tens of thousands of years. Yet peptic ulcer disease appeared to be rare prior to the 19th century. The prevalence of peptic ulcer disease increased between 1850 and 1900 and culminated in a cohort at high risk that was born at the end of the 19th century. This coincided with the provision of safe water and improvements in sanitation and personal hygiene. One hypothesis for the emergence of peptic ulcer disease focuses on the rate of development of atrophic gastritis induced by Helicobacter pylori...
January 10, 2018: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29315971/levels-of-malondialdehyde-in-the-gastric-juice-its-association-with-helicobacter-pylori-infection-and-stomach-diseases
#9
Yao-Kuang Wang, Wei-Chih Chiang, Fu-Chen Kuo, Meng-Chieh Wu, Hsiang-Yao Shih, Sophie S W Wang, Chung-Jung Liu, Yen-Hsu Chen, Deng-Chyang Wu, Wei-Wen Su, Yeou-Lih Huang
BACKGROUND: Helicobacter pylori (H. pylori) infection causes elevation of lipid peroxidation product malondialdehyde (MDA) and this association may be due to the bacterium causing reactive oxygen species-mediated damage to DNA in the gastric epithelium. The aim of this study was to investigate the gastric juice MDA levels in relation to H. pylori infection and associated gastric diseases. METHODS: Gastric juice samples were obtained from 117 patients undergoing endoscopy, and gastric juice MDA levels were determined by high-performance liquid chromatography (HPLC) system...
January 5, 2018: Helicobacter
https://www.readbyqxmd.com/read/29303193/nanoparticle-binding-attenuates-the-pathobiology-of-gastric-cancer-associated-helicobacter-pylori
#10
Dana Westmeier, Gernot Posselt, Angelina Hahlbrock, Sina Bartfeld, Cecilia Vallet, Carmen Abfalter, Dominic Docter, Shirley K Knauer, Silja Wessler, Roland H Stauber
Enteric bacteria may cause severe diseases, including gastric cancer-associated Helicobacter pylori. Their infection paths overlap with the oro-gastrointestinal uptake route for nanoparticles, increasingly occurring during environmental or consumer/medical exposure. By comprehensive independent analytical methods, such as live cell fluorescence, electron as well as atomic force microscopy and elemental analysis, we show that a wide array of nanoparticles (NPs) but not microparticles form complexes with H. pylori and enteric pathogens without the need for specific functionalization...
January 5, 2018: Nanoscale
https://www.readbyqxmd.com/read/29301065/pancreatic-necrosectomy-through-sinus-tract-endoscopy
#11
Mahesh Kumar Goenka, Usha Goenka, Md Yasin Mujoo, Indrajit Kumar Tiwary, Sanjay Mahawar, Vijay Kumar Rai
Background/Aims: Direct endoscopic pancreatic necrosectomy is increasingly being utilized to treat infected or symptomatic walled-off necrosis (WON) located close to the stomach or duodenum. Laterally-placed WON has traditionally been treated surgically. We evaluated a less utilized technique of sinus tract endoscopy (STE) for symptomatic laterally-placed WON. Methods: Two hundred seventy-six patients with acute pancreatitis admitted in our hospital, 32 had symptomatic or infected WON requiring intervention...
January 4, 2018: Clinical Endoscopy
https://www.readbyqxmd.com/read/29290316/lymphoepithelioma-like-carcinoma-of-the-large-intestine-a-case-report-and-literature-review
#12
Cristina Díaz Del Arco, Fernando Esteban Collazo, Mª Jesús Fernández Aceñero
Lymphoepithelioma like carcinoma (LELC) is a well-known neoplastic lesion that mainly involves the stomach and which has been linked to Epstein Barr virus infection. There are exceptional cases of intestinal involvement by LELC, with 7 reported cases to date. We report a new case of LELC affecting the right colon and review the literature on this rare disorder, with special emphasis on pathogenesis, molecular features and differential diagnosis.
January 2018: Revista Española de Patología
https://www.readbyqxmd.com/read/29281833/nlrp3-controls-the-development-of-gastrointestinal-cd11b-dendritic-cells-in-the-steady-state-and-during-chronic-bacterial-infection
#13
Isabelle C Arnold, Xiaozhou Zhang, Sabine Urban, Mariela Artola-Borán, Markus G Manz, Karen M Ottemann, Anne Müller
The gastric lamina propria is largely uncharted immunological territory. Here we describe the evolution and composition of the gastric, small intestinal, and colonic lamina propria mononuclear phagocyte system during the steady state and infection with the gastric pathogen Helicobacter pylori. We show that monocytes, CX3CR1hi macrophages, and CD11b+ dendritic cells are recruited to the infected stomach in a CCR2-dependent manner. All three populations, but not BATF3-dependent CD103+ DCs, sample red fluorescent protein (RFP)+Helicobacter pylori (H...
December 26, 2017: Cell Reports
https://www.readbyqxmd.com/read/29279510/prevalence-of-multiple-white-and-flat-elevated-lesions-in-individuals-undergoing-a-medical-checkup
#14
Kyoichi Adachi, Tomoko Mishiro, Mayumi Okada, Yoshikazu Kinoshita
Objective The pathogenesis of multiple white and flat elevated lesions in the stomach has not been elucidated. We investigated the prevalence of such lesions and their characteristics in affected individuals. Methods The subjects were 1,995 individuals (1,320 men, 675 women; mean age 54.2±9.5 years) who visited our medical center for a comprehensive annual medical checkup and in whom the status of Helicobacter pylori infection could be determined. The presence of multiple white and flat elevated lesions in the stomach and the degree of gastric mucosal atrophy were evaluated using endoscopic findings...
December 27, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29276230/disseminated-nontuberculous-mycobacterial-infection-in-a-patient-with-anti-ifn-%C3%AE-autoantibodies
#15
Masakuni Tanimizu, Kenji Mizuno, Masayuki Hashimoto
We treated a 72-year-old Japanese female with sustained high fever and overall body exhaustion. An infectious liver cyst and right lung pneumonia were suspected causes. Hepatic cystectomy and various antibiotics did not resolve symptoms. Pneumonia exacerbation and ascitic fluid retention, left lumbar spinal osteomyelitis, and peri-gastric lymph node abscess penetrating the stomach were observed. Mycobacterium avium was identified in sputum, ascites, vertebral body abscess puncture specimen, and pus mucus secretion in the stomach...
December 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/29274789/a-cuticle-protein-from-the-pacific-white-shrimp-litopenaeus-vannamei-involved-in-wssv-infection
#16
Feifei Yang, Shihao Li, Fuhua Li, Jianhai Xiang
White spot syndrome virus (WSSV) is a major viral pathogen in global shrimp farming, causing huge economic damage. Through penetrating the outer surface of the target tissues, WSSV enters into the cells of the target tissue to complete the replication process in the host. In the present study, a cuticle protein gene from Litopenaeus vannamei, designated as LvAMP13.4, was identified and proved to be involved in WSSV invasion. The deduced amino acid sequence of LvAMP13.4 contained a signal peptide and a conserved chitin-binding domain type 4 (ChBD4)...
December 21, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29273450/helicobacter-pylori-depletes-cholesterol-in-gastric-glands-to-prevent-interferon-gamma-signaling-and-escape-the-inflammatory-response
#17
Pau Morey, Lennart Pfannkuch, Ervinna Pang, Francesco Boccellato, Michael Sigal, Aki Imai-Matsushima, Victoria Dyer, Manuel Koch, Hans-Joachim Mollenkopf, Philipp Schlaermann, Thomas F Meyer
BACKGROUND & AIMS: Despite inducing an inflammatory response, Helicobacter pylori can persist in the gastric mucosa for decades. H pylori expression of cholesterol-α-glucosyltransferase (encoded by cgt) is required for gastric colonization and T-cell activation. We investigated how cgt affects gastric epithelial cells and the host immune response. METHODS: MKN45 gastric epithelial cells, AGS cells, and human primary gastric epithelial cells (obtained from patients undergoing gastrectomy or sleeve resection or gastric antral organoids) were incubated with interferon gamma (IFNG) or IFNB and exposed to H pylori, including cagPAI and cgt mutant strains...
December 19, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29261714/high-association-of-cryptosporidium-spp-infection-with-colon-adenocarcinoma-in-lebanese-patients
#18
Marwan Osman, Sadia Benamrouz, Karine Guyot, Martha Baydoun, Emilie Frealle, Magali Chabe, Nausicaa Gantois, Baptiste Delaire, Anne Goffard, Albert Aoun, Nawaf Jurdi, Fouad Dabboussi, Gael Even, Christian Slomianny, Pierre Gosset, Monzer Hamze, Colette Creusy, Eric Viscogliosi, Gabriela Certad
BACKGROUND: The association between Cryptosporidium and human colon cancer has been reported in different populations. However, this association has not been well studied. In order to add new strong arguments for a probable link between cryptosporidiosis and colon human cancer, the aim of this study was to determine prevalence and to identify species of Cryptosporidium among Lebanese patients. METHODOLOGY AND PRINCIPAL FINDINGS: Overall, 218 digestive biopsies were collected in Tripoli, Lebanon, from three groups of patients: (i) patients with recently diagnosed colon intraepithelial neoplasia/adenocarcinoma before any treatment (n = 72); (ii) patients with recently diagnosed stomach intraepithelial neoplasia/adenocarcinoma before any treatment (n = 21); and (iii) patients without digestive intraepithelial neoplasia/adenocarcinoma but with persistent digestive symptoms (n = 125)...
2017: PloS One
https://www.readbyqxmd.com/read/29258921/the-choroid-plexus-epithelium-as-a-novel-player-in-the-stomach-brain-axis-during-helicobacter-infection
#19
N Gorlé, C Blaecher, E Bauwens, C Vandendriessche, S Balusu, J Vandewalle, C Van Cauwenberghe, E Van Wonterghem, G Van Imschoot, C Liu, R Ducatelle, C Libert, F Haesebrouck, A Smet, R E Vandenbroucke
Several studies suggest a link between shifts in gut microbiota and neurological disorders. Recently, we reported a high prevalence of Helicobacter suis (H. suis) in patients with Parkinson's disease. Here, we evaluated the effect of gastric H. suis infection on the brain in mice. One month of infection with H. suis resulted in increased brain inflammation, reflected in activation of microglia and cognitive decline. Additionally, we detected choroid plexus inflammation and disruption of the epithelial blood-cerebrospinal fluid (CSF) barrier upon H...
December 16, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29248442/metaplastic-cells-in-the-stomach-arise-independently-of-stem-cells-via-dedifferentiation-or-transdifferentiation-of-chief-cells
#20
Megan D Radyk, Joseph Burclaff, Spencer G Willet, Jason C Mills
Spasmolytic polypeptide-expressing metaplasia (SPEM) develops in patients with chronic atrophic gastritis due to infection with Helicobacter pylori; it might be a precursor to intestinal metaplasia and gastric adenocarcinoma. Lineage tracing experiments of the gastric corpus in mice have not established whether SPEM derives from proliferating stem cells or differentiated, post-mitotic zymogenic chief cells in the gland base. We investigated whether differentiated cells can give rise to SPEM using a non-genetic approach in mice...
December 14, 2017: Gastroenterology
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