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https://www.readbyqxmd.com/read/28443084/gene-expression-profiling-of-transcription-factors-of-helicobacter-pylori-under-different-environmental-conditions
#1
Miguel A De la Cruz, Miguel A Ares, Kristine von Bargen, Leonardo G Panunzi, Jessica Martínez-Cruz, Hilda A Valdez-Salazar, César Jiménez-Galicia, Javier Torres
Helicobacter pylori is a Gram-negative bacterium that colonizes the human gastric mucosa and causes peptic ulcers and gastric carcinoma. H. pylori strain 26695 has a small genome (1.67 Mb), which codes for few known transcriptional regulators that control bacterial metabolism and virulence. We analyzed by qRT-PCR the expression of 16 transcriptional regulators in H. pylori 26695, including the three sigma factors under different environmental conditions. When bacteria were exposed to acidic pH, urea, nickel, or iron, the sigma factors were differentially expressed with a particularly strong induction of fliA...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28441653/effect-of-topical-iloprost-and-nitroglycerin-on-gastric-microcirculation-and-barrier-function-during-hemorrhagic-shock-in-dogs
#2
Richard Truse, Jonas Hinterberg, Jan Schulz, Anna Herminghaus, Andreas Weber, Tabea Mettler-Altmann, Inge Bauer, Olaf Picker, Christian Vollmer
BACKGROUND: Topical drug application is used to avoid systemic side effects. The aim of this study was to analyze whether locally applied iloprost or nitroglycerin influence gastric mucosal perfusion, oxygenation, and barrier function during physiological and hemorrhagic conditions. METHODS: In repeated experiments, 5 anesthetized dogs received iloprost, nitroglycerin, or normal saline during physiological and hemorrhagic (-20% blood volume) conditions. Macro- and microcirculatory variables were recorded continuously...
April 26, 2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28440689/self-assembled-hemoglobin-nanoparticles-for-improved-oral-photosensitizer-delivery-and-oral-photothermal-therapy-in-vivo
#3
Kaikai Wang, Gang Chen, Qi Hu, Yuqian Zhen, Huipeng Li, Jiao Chen, Bin Di, Yiqiao Hu, Minjie Sun, David Oupický
AIM: The aim of the present study was to use hemoglobin (Hb) nanoparticles (NPs) to improve oral bioavailability of a near-infrared dye IR780 for in vivo antitumor application in photothermal therapy. METHODS: One-step acid-denaturing method was used to encapsulate IR780 into self-assembled Hb NPs (IR780@Hb NPs). Pharmacokinetics, biodistribution and antitumor effect were studied in vivo. RESULTS: The Hb NPs showed high stability in enzymatic and acidic conditions similar to the gastric environment, and enhanced absorption of IR780 into the blood...
April 25, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28440518/-choice-of-bariatric-and-metabolic-surgical-procedures
#4
Hui Liang, Shibo Lin, Wei Guan
Bariatric and metabolic surgery has become the clinical hot topic of the treatment of metabolic syndromes including obesity and diabetes mellitus, but how to choose the appropriate surgical procedure remains the difficult problem in clinical practice. Clinical guidelines of American Society for Metabolic and Bariatric Surgery(ASMBS)(version 2013) introduced the procedures of bariatric and metabolic surgery mainly including biliopancreatic diversion with duodenal switch(BPD-DS), laparoscopic adjustable gastric banding (LAGB), laparoscopic Roux-en-Y gastric bypass (LRYGB) and laparoscopic sleeve gastrectomy(LSG)...
April 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28440516/-current-status-and-changes-of-metabolic-and-bariatric-surgery-in-china
#5
Jingang Liu
Through continuous development, metabolic and bariatric surgery (MBS) has become widely recognized in academic and medical circles. In China, the volume of MBS operations has increased year by year. Therapeutic goals of MBS have evolved from treating obesity to treating Type 2 diabetes mellitus, and further to treating a series of obesity-associated metabolic diseases (including conditions in the endocrine system, circulatory system, respiratory system, reproductive system, and etc). Surgical approach of MBS has also been evolving continuously...
April 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28438876/thrombotic-microangiopathy-following-chemotherapy-with-s-1-and-cisplatin-in-a-patient-with-gastric-cancer-a-case-report
#6
Jun Muto, Hiroshi Kishimoto, Yasuo Kaizuka, Mitsuru Kinjo, Hidefumi Higashi, Fumiaki Kishihara
BACKGROUND: Thrombotic microangiopathy (TMA) represents a spectrum of serious disorders characterized by occlusive microvascular thrombosis, thrombocytopenia and end-organ damage. TMA is associated with a broad range of conditions and is also a well-described complication of both cancer and its treatment. CASE REPORT: A 77-year-old Japanese woman underwent S-1 and cisplatin chemotherapy for treatment of advanced gastric cancer with multiple lymph node and liver metastases...
May 2017: In Vivo
https://www.readbyqxmd.com/read/28436616/reduced-infectivity-of-waterborne-viable-but-nonculturable-helicobacter-pylori-strain-ss1-in-mice
#7
Kevin F Boehnke, Kathryn A Eaton, Clinton Fontaine, Rebecca Brewster, Jianfeng Wu, Joseph N S Eisenberg, Manuel Valdivieso, Laurence H Baker, Chuanwu Xi
BACKGROUND: Helicobacter pylori infection has been consistently associated with lack of access to clean water and proper sanitation, but no studies have demonstrated that the transmission of viable but nonculturable (VBNC) H. pylori can occur from drinking contaminated water. In this study, we used a laboratory mouse model to test whether waterborne VBNCH. pylori could cause gastric infection. MATERIALS AND METHODS: We performed five mouse experiments to assess the infectivity of VBNCH...
April 24, 2017: Helicobacter
https://www.readbyqxmd.com/read/28436598/the-expression-of-helicobacter-pylori-tfs-plasticity-zone-cluster-is-regulated-by-ph-and-adherence-and-its-composition-is-associated-with-differential-gastric-il-8-secretion
#8
Bruno Silva, Alexandra Nunes, Filipa F Vale, Raquel Rocha, João Paulo Gomes, Ricardo Dias, Mónica Oleastro
BACKGROUND: Helicobacter pylori virulence is associated with different clinical outcomes. The existence of an intact dupA gene from tfs4b cluster has been suggested as a predictor for duodenal ulcer development. However, the role of tfs plasticity zone clusters in the development of ulcers remains unclear. We studied several H. pylori strains to characterize the gene arrangement of tfs3 and tfs4 clusters and their impact in the inflammatory response by infected gastric cells. METHODS: The genome of 14 H...
April 24, 2017: Helicobacter
https://www.readbyqxmd.com/read/28436350/prevalence-and-risk-factors-for-gastric-ulceration-in-pigs-slaughtered-at-170-kg
#9
F Gottardo, A Scollo, B Contiero, M Bottacini, C Mazzoni, S A Edwards
Oesophago-gastric ulcers (OGU) are a production and welfare problem in pigs. Stomach condition was scored for 22 551 pigs in 228 batches over a 7-month period at an abattoir in Italy processing heavy pigs for ham production. Mild or severe ulceration was observed in 20.7% of pigs, of which 13% had scar tissue. Variation between batches was high (0% to 36% prevalence of severe ulcers) and showed a significant effect of farm of origin (P<0.001). Overnight lairage increased the prevalence of mild ulcers (P<0...
April 24, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28432677/development-of-yoghurt-with-ju%C3%A3-ara-pulp-euterpe-edulis-m-and-the-probiotic-lactobacillus-acidophilus-la5
#10
Marina V Geraldi, Fabricio L Tulini, Vanessa M Souza, Elaine C P De Martinis
Yoghurts are dairy products consumed worldwide and can be supplemented with substances that provide extra health benefits as well as probiotic strains. In this context, the present study aimed to prepare a yoghurt added of juçara (Euterpe edulis M.) pulp and the commercial probiotic strain Lactobacillus acidophilus La5. Moreover, the probiotic survival during storage and after in vitro exposure to simulated gastric and enteric conditions was evaluated. Four formulations of yoghurt were prepared: (a) natural yoghurt, (b) yoghurt added of probiotic, (c) yoghurt added of juçara pulp, and (d) yoghurt added of probiotic culture and juçara pulp...
April 21, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28431980/shear-stress-alterations-in-the-celiac-trunk-of-patients-with-a-continuous-flow-left-ventricular-assist-device-as-shown-by-in-silico-and-in-vitro-flow-analyses
#11
Francesco Scardulla, Salvatore Pasta, Leonardo D'Acquisto, Sergio Sciacca, Valentina Agnese, Christian Vergara, Alfio Quarteroni, Francesco Clemenza, Diego Bellavia, Michele Pilato
BACKGROUND: The use of left ventricular assist devices (LVADs) to treat advanced cardiac heart failure is constantly increasing, although this device leads to high risk for gastrointestinal bleeding. METHODS: Using in-silico flow analysis, we quantified hemodynamic alterations due to continuous-flow LVAD (HeartWare, Inc., Framingham, MA) in the celiac trunk and major branches of the abdominal aorta, and then explored the relationship between wall shear stress (WSS) and celiac trunk orientation...
March 24, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28431376/trichobezoar-presenting-as-a-gastric-outlet-obstruction-a-case-report
#12
Eugene Nwankwo, Edward Daniele, Erin Woller, John Fitzwater, Thomas McGill, Steven E Brooks
INTRODUCTION: Rapunzel syndrome is a rare intestinal condition that starts with the ingestion of a trichobezoar. The condition is predominately found in females and can be associated with trichotillomania, or the compulsive urge to pull one's own hair out. There are less than 40 cases described in the literature with the prevention of recurrence aimed at psychological treatment. PRESENTATION OF CASE: The patient is a 7 year-old girl with a history of trichotillomania with trichophagia as a young child who presented with abdominal pain, nausea, and vomiting, consistent with a gastric outlet obstruction...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28430541/a-comprehensive-approach-to-hepatic-vascular-disease
#13
Khaled M Elsayes, Akram M Shaaban, Sarah M Rothan, Sanaz Javadi, Beatrice L Madrazo, Rosa P Castillo, Victor J Casillas, Christine O Menias
The liver has a complex vascular supply, which involves the inflow of oxygenated blood through the hepatic artery (systemic circulation) and deoxygenated blood through the portal vein (portal circulation), as well as the outflow of deoxygenated blood through the hepatic veins to the inferior vena cava. A spectrum of vascular variants can involve the liver. Some of these variants may result in areas of enhancement that can mimic more serious pathologic conditions. In this article, the authors discuss a spectrum of variants and pathologic conditions that may involve the liver vasculature...
April 21, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28429199/gastric-bypass-and-influence-on-improvement-of-nafld
#14
REVIEW
Vamsi Alli, Ann M Rogers
PURPOSE OF REVIEW: Obesity is recognized as a chronic and recurring disease, often accompanied by other weight-related comorbid conditions such as obstructive sleep apnea, hypertension, type 2 diabetes, and non-alcoholic fatty liver disease (NAFLD). This chapter will seek to focus on the effect of weight loss surgery (WLS), in particular Roux-en-Y gastric bypass (RYGB), on NAFLD. RECENT FINDINGS: Among several modalities available to treat NAFLD, the one most likely to achieve rapid, significant, and sustained improvement of liver disease is WLS...
June 2017: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/28428706/gastroesophageal-reflux-disease-and-morbid-obesity-to-sleeve-or-not-to-sleeve
#15
EDITORIAL
Fabrizio Rebecchi, Marco E Allaix, Marco G Patti, Francisco Schlottmann, Mario Morino
Laparoscopic sleeve gastrectomy (LSG) has reached wide popularity during the last 15 years, due to the limited morbidity and mortality rates, and the very good weight loss results and effects on comorbid conditions. However, there are concerns regarding the effects of LSG on gastroesophageal reflux disease (GERD). The interpretation of the current evidence is challenged by the fact that the LSG technique is not standardized, and most studies investigate the presence of GERD by assessing symptoms and the use of acid reducing medications only...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28420293/acute-gastric-outlet-obstruction-secondary-to-exclusive-paraoesophageal-small-bowel-herniation-a-case-report
#16
Jean-Charles de Schoutheete, Alex M Reece-Smith, Saj A Wajed
INTRODUCTION: Herniation of abdominal viscera into the thorax may occur as a consequence of abnormal defects in the diaphragm. In adults, the most common condition relates to herniations through a weakened crural orifice via which the oesophagus normally traverses. These hiatus hernias are classified as types I-IV depending on the extent of visceral involvement. CASE REPORT: We present here a case of type IV hiatus hernia with massive mediastinal herniation of the small bowel, yet remarkable in that the stomach itself remained completely intra-abdominal...
April 19, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28417207/impact-of-food-processing-on-rye-product-properties-and-their-in-vitro-digestion
#17
Daniel P Johansson, José L Vázquez Gutiérrez, Rikard Landberg, Marie Alminger, Maud Langton
PURPOSE: Rye products have been reported to elicit postprandial insulin and glucose responses which may be beneficial for prevention of type-2 diabetes. However, mechanisms underlying variations in responses related to processing techniques are not fully understood. METHODS: Five differently processed rye products (sourdough-fermented bread, fermented and unfermented crispbread, extrusion-cooked rye, and porridge) and refined wheat bread were characterised. Two in vitro methods, a dynamic method simulating digestion in the stomach and small intestine and a static method, simulating conditions in the stomach were used to determine viscosity development, structural changes and release of glucose during digestion...
April 17, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28414670/diulafoy-s-lesion-an-uncanny-etiology-of-gastrointestinal-bleed
#18
V Gasia, O Lamendola
INTRODUCTION: Dieulafoy's lesion is a relatively rare, but potentially life-threatening, condition. It accounts for 1-2 percent of acute gastrointestinal (GI); bleeding. CASE: A 99-year-old woman was initially admitted due to left lower extremity cellulitis related to chronic venous stasis ulcer and was receiving broad-spectrum IV antibiotics. Upon admission to the medical floor, she had an episode of hematemesis and multiple bowel movements with black-tarry stools...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28412148/no-evidence-to-support-a-role-for-helicobacter-pylori-infection-and-plasminogen-binding-protein-in-autoimmune-pancreatitis-and-igg4-related-disease-in-a-uk-cohort
#19
Emma L Culver, Wouter L Smit, Caroline Evans, Ross Sadler, Tamsin Cargill, Mateusz Makuch, Lai-Mun Wang, Berne Ferry, Paul Klenerman, Eleanor Barnes
BACKGROUND AND OBJECTIVES: Helicobacter pylori (H.pylori) plasminogen binding protein (PBP) has been proposed as an antigen triggering autoimmune pancreatitis (AIP), the pancreatic manifestation of IgG4-related disease (IgG4-RD). We investigated exposure to H. pylori infection, cytokine response and immunological memory to H. pylori PBP in a prospective IgG4-RD cohort in the UK. METHODS: Clinical and endoscopic evidence of peptic ulceration, serological H. pylori exposure and serum IgG4 levels were obtained in 55 IgG4-RD patients and 52 disease controls (DC) with autoimmune or inflammatory conditions with an elevated serum IgG4...
April 5, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28408641/gastroparesis-and-lipid-metabolism-associated-dysbiosis-in-wistar-kyoto-rats
#20
Julie E Dalziel, Karl Fraser, Wayne Young, Catherine M Lloyd-West, Shalome A Bassett, Nicole C Roy
Altered gastric accommodation and intestinal morphology suggests impaired gastrointestinal (GI) transit may occur in the Wistar Kyoto (WKY) rat strain, as common in stress-associated functional GI disorders. Because changes in GI transit can alter microbiota composition, we investigated whether these are altered in WKY rats compared with the resilient Sprague Dawley (SD) rats under basal conditions, and characterized plasma lipid and metabolite differences. Bead transit was tracked by X-ray imaging to monitor: gastric emptying (GE; 4 h), small intestine (SI) transit (9 h) and large intestine transit (12 h)...
April 13, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
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