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https://www.readbyqxmd.com/read/28436616/reduced-infectivity-of-waterborne-viable-but-nonculturable-helicobacter-pylori-strain-ss1-in-mice
#1
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/28420890/endoscopic-manifestations-and-clinical-characteristics-of-cytomegalovirus-infection-in-the-upper-gastrointestinal-tract
#2
Masaya Iwamuro, Eisei Kondo, Takehiro Tanaka, Hideharu Hagiya, Seiji Kawano, Yoshiro Kawahara, Fumio Otsuka, Hiroyuki Okada
We retrospectively analyzed the cases of 14 patients (9 women, 5 men, mean age: 51.6 years) with cytomegalovirus (CMV) involvement in the esophagus, stomach, and/or duodenum diagnosed at a single center, to determine their endoscopic features and clinical backgrounds. Thirteen patients (92.9%) had hematologic disease; the other had rheumatoid arthritis. Of the former, 12 patients underwent allogeneic hematopoietic stem cell transplantation, and 9 of these patients had graft-versus-host disease (GVHD) before undergoing esophagogastroduodenoscopy (EGD)...
April 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/28411962/epidemiology-and-pathophysiology-of-malignancy-in-common-variable-immunodeficiency
#3
REVIEW
A Tak Manesh, G Azizi, A Heydari, F Kiaee, M Shaghaghi, N Hossein-Khannazer, R Yazdani, H Abolhassani, A Aghamohammadi
Common variable immunodeficiency (CVID) is a diagnostic category of primary immunodeficiency (PID) which may present with heterogeneous disorders including recurrent infections, autoimmunity, granulomatous diseases, lymphoid and other types of malignancies. Generally, the incidence of malignancy in CVID patients is around 1.5-20.7% and usually occurs during the 4th-6th decade of life. Non-Hodgkin lymphoma is the most frequent malignancy, followed by epithelial tumours of stomach, breast, bladder and cervix...
April 12, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28407201/cancer-incidence-profile-in-sub-saharan-african-born-blacks-in-the-united-states-similarities-and-differences-with-us-born-non-hispanic-blacks
#4
Genet A Medhanie, Stacey A Fedewa, Hibret Adissu, Carol E DeSantis, Rebecca L Siegel, Ahmedin Jemal
BACKGROUND: Sub-Saharan African-born blacks (ABs) are one of the fastest-growing populations in the United States. However, to the authors' knowledge, data regarding the cancer burden in this group are lacking, which would inform targeted cancer prevention and control. METHODS: The authors calculated age-standardized proportional incidence ratios (PIRs) comparing the frequency of the top 15 cancers in ABs with that of US-born non-Hispanic blacks (USBs) by sex and region of birth using incidence data for 2000 through 2012 from the Surveillance, Epidemiology, and End Results (SEER 17) program...
April 13, 2017: Cancer
https://www.readbyqxmd.com/read/28405201/interleukin-8-251%C3%A2-t-a-polymorphism-in-children-and-teenagers-infected-with-helicobacter-pylori
#5
Marina Saes, Roger Willian de Labio, Lucas Trevizani Rasmussen, Spencer Luiz Marques Payão
BACKGROUND: Helicobacter pylori (H. pylori) is a gram-negative bacterium that colonizes the human stomach and causes a variety of gastric diseases. This study evaluated the correlations between the -251 (T>A) (rs4073) polymorphism of interleukin-8 (IL-8), the etiology of gastric disease, and H. pylori infection in pediatric and adolescent patients. METHODS: DNA samples were obtained from 285 gastric biopsies from pediatric patients. H. pylori was detected by PCR, whereas PCR-RFLP was used to characterize the -251 (T>A) polymorphism of IL-8...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28403237/evidence-of-neurofibromatosis-type-1-in-a-multi-morbid-inca-child-mummy-a-paleoradiological-investigation-using-computed-tomography
#6
Stephanie Panzer, Holger Wittig, Stephanie Zesch, Wilfried Rosendahl, Sandra Blache, Magdalena Müller-Gerbl, Gerhard Hotz
OBJECTIVE: In this study, an Inca bundle was examined using computed tomography (CT). The primary aim was to determine the preservation status of bony and soft tissues, the sex, the age at the time of death, possible indicators for disease or even the cause of death, as well as the kind of mummification. A secondary aim was to obtain a brief overview of the wrapping in order to gain additional information on the cultural background. MATERIALS AND METHODS: The bundle belongs to the Museum of Cultures in Basel, Switzerland, and was bought in Munich, Germany, in 1921...
2017: PloS One
https://www.readbyqxmd.com/read/28400214/characterization-of-pmsp%C3%B3-tzle-1-from-the-black-tiger-shrimp-peneaus-monodon
#7
Sittichai Boonrawd, Ravi Mani, Sirikwan Ponprateep, Premruethai Supungul, Promsin Masrinoul, Anchalee Tassanakajon, Vichien Rimphanitchayakit
Spätzle is a signaling ligand in innate immune response that signals pathogenic infection via Toll receptor and Toll pathway into the cells for the synthesis of antimicrobial proteins. Herein, three PmSpӓtzle isoforms were identified in Penaeus monodon, namely PmSpz1, 2 and 3. The PmSpz1 was chosen for detailed study. The PmSpz1 gene was expressed in all nine tissues tested including the hemocytes, stomach, hepatopancreas, gill, lymphoid tissue, eyestalk, muscle, intestine and heart. Its expression was up-regulated upon white spot syndrome virus (WSSV) infection...
April 8, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28392893/traditional-persian-topical-medications-for-gastrointestinal-diseases
#8
REVIEW
Laleh Dehghani Tafti, Seyyed Mahyar Shariatpanahi, Mahmoud Mahdavi Damghani, Behjat Javadi
Drug delivery across the skin is used for several millennia to ease gastrointestinal (GI) ailments in Traditional Persian Medicine (TPM). TPM topical remedies are generally being applied on the stomach, lower abdomen, lower back and liver to alleviate GI illnesses such as dyspepsia, gastritis, GI ulcers, inflammatory bowel disease, intestinal worms and infections. The aim of the present study is to survey the topical GI remedies and plant species used as ingredients for these remedies in TPM. In addition, pharmacological activities of the mentioned plants have been discussed...
March 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28390977/helicobacter-pylori-genotypes-determine-risk-of-non-cardia-gastric-cancer-and-intestinal-or-diffuse-type-gc-in-ardabil-a-very-high-risk-area-in-northwestern-iran
#9
Esmat Abdi, Saeid Latifi-Navid, Saber Zahri, Abbas Yazdanbod, Reza Safaralizadeh
Frequency of the Helicobacter pylori vacA gene polymorphism and its association with gastric cancer (GC) was assessed in Ardabil, a very high-risk area in Northwestern Iran. We determined the presence of the H. pylori 16S rDNA gene and the vacA s-, m-, i-, and d-region genotypes in DNA from fresh gastric biopsies. Patients with GC were classified based on both the anatomic site and the histopathologic type of tumor Of 135 patients, including 57 with non-atrophic gastritis (NAG) and 78 with GC, 103 were infected by H...
April 5, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28379959/unraveling-chagas-disease-transmission-through-the-oral-route-gateways-to-trypanosoma-cruzi-infection-and-target-tissues
#10
Danielle Silva-Dos-Santos, Juliana Barreto-de-Albuquerque, Bárbara Guerra, Otacilio C Moreira, Luiz Ricardo Berbert, Mariana Tavares Ramos, Barbara Angelica S Mascarenhas, Constança Britto, Alexandre Morrot, Déa M Serra Villa-Verde, Luciana Ribeiro Garzoni, Wilson Savino, Vinícius Cotta-de-Almeida, Juliana de Meis
Oral transmission of Trypanosoma cruzi, the causative agent of Chagas disease, is the most important route of infection in Brazilian Amazon and Venezuela. Other South American countries have also reported outbreaks associated with food consumption. A recent study showed the importance of parasite contact with oral cavity to induce a highly severe acute disease in mice. However, it remains uncertain the primary site of parasite entry and multiplication due to an oral infection. Here, we evaluated the presence of T...
April 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28374931/a-link-between-platelet-to-lymphocyte-ratio-and-helicobacter-pylori-infection
#11
Raymond Farah, Hamza Hamza, Rola Khamisy-Farah
PURPOSE: Chronic Helicobacter pylori gastritis affects two-thirds of the world's population and is one of the most common chronic inflammatory disorders of humans, the infection clearly results in chronic mucosal inflammation in the stomach and duodenum, which, in turn, might lead to abnormalities in gastroduodenal motility and sensitivity and is the most frequent cause of dyspepsia and peptic disease. Some studies showed that there was a correlation between low-grade inflammation as CRP and HP infection...
April 4, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28371660/exposure-of-heligmosomoides-polygyrus-and-trichuris-muris-to-albendazole-albendazole-sulfoxide-mebendazole-and-oxantel-pamoate-in%C3%A2-vitro-and-in%C3%A2-vivo-to-elucidate-the-pathway-of-drug-entry-into-these-gastrointestinal-nematodes
#12
Noemi Cowan, Charles Meier, Anna Neodo, Jennifer Keiser
Millions of people are treated with anthelmintics to control soil-transmitted helminth infections; yet, drug distribution in the plasma and gastrointestinal tract compartments and the pathway of drug uptake into gastrointestinal nematodes responsible for the pharmacological effect are unknown. We assessed the distribution and uptake of albendazole, albendazole sulfoxide, albendazole sulfone in the hookworm Heligmosomoides polygyrus in vitro and in vivo as well as the distribution and uptake of albendazole, mebendazole, and oxantel pamoate in the whipworm Trichuris muris in vitro and invivo...
March 24, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/28368278/crystallization-and-x-ray-analysis-of-the-extracellular-adhesion-domain-of-helicobacter-pylori-adhesin-a-the-significance-of-the-cation-composition-in-the-crystallization-precipitant
#13
Ling Guo, Jinyong Zhang, Liwei Cui, Dong Liu, Bo Ma, Shufeng Wang, Haibo Li, Yuzhang Wu, Wei Liu
Adherence to host cells is a crucial step in the process of bacterial infection, which is usually mediated by a number of outer membrane proteins identified as adhesins. Helicobacter pylori adhesin A (HpaA) is a member of the adhesin family that mediates the adherence of Helicobacter pylori to gastric epithelial cells, and consequently assists the bacteria in becoming a life-long colonizer of the human stomach. In this study, two constructs were made for the production of truncated HpaA proteins comprising residues 31-260 and 53-260, respectively...
April 1, 2017: Acta Crystallographica. Section F, Structural Biology Communications
https://www.readbyqxmd.com/read/28367842/epidemiological-study-on-feline-gastric-helicobacter-spp-in-japan
#14
Sanae Kubota-Aizawa, Koichi Ohno, Hideyuki Kanemoto, Ko Nakashima, Kenjiro Fukushima, Kazuyuki Uchida, James K Chambers, Yuko Goto-Koshino, Hitomi Mimuro, Takayasu Watanabe, Tsutomu Sekizaki, Hajime Tsujimoto
Epidemiological and pathological studies on Helicobacter spp. in feline stomachs in Japan were conducted using genus- and species-specific (H. felis, H. bizzozeronii, H. heilmannii sensu stricto[s.s.] and H. pylori) polymerase chain reactions (PCRs), ureAB gene sequencing and histopathology. PCR results showed that 28 of 56 cats were infected with Helicobacter spp., and H. heilmannii s.s. was the most prevalent species by both PCR (28/28) and ureAB gene sequencing (26/28). Some of the sequences showed high similarities with those from human patients with gastric diseases (99%)...
March 26, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28361362/functional-disruption-of-peroxiredoxin-by-bismuth-antiulcer-drugs-attenuates-helicobacter-pylori-survival
#15
Yuen-Yan Chang, Tianfan Cheng, Xinming Yang, Lijian Jin, Hongzhe Sun, Hongyan Li
Bismuth drugs have been used clinically to treat infections from Helicobacter pylori, a pathogen that is strongly related to gastrointestinal diseases even stomach cancer. Despite extensive studies, the mechanisms of action of bismuth drugs are not fully understood. Alkyl hydroperoxide reductase subunit C (AhpC) is the most abundant 2-cysteine peroxiredoxin, crucial for H. pylori survival in the host by defense of oxidative stress. Herein we show that a Bi(III) antiulcer drug (CBS) binds to the highly conserved cysteine residues (Cys49 and Cys169) with a dissociation constant (K d) of Bi(III) to AhpC of 3...
March 30, 2017: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/28353418/factors-associated-with-the-development-of-tertiary-peritonitis-in-critically-ill-patients
#16
Josep Ballus, Juan C Lopez-Delgado, Joan Sabater-Riera, Xose L Perez-Fernandez, Antoni J Betbese, Joan A Roncal
BACKGROUND: Critically ill surgical patients remain at a high risk of adverse outcomes as a result of secondary peritonitis (SP). The risk is even higher if tertiary peritonitis (TP) develops. Factors related to the development of TP, however, are scarce in the literature. The main aim of our study was to identify factors associated with the development of TP in patients with SP in the intensive care unit (ICU), and also to report differences in microbiologic patterns and antibiotic therapy in patients with the two conditions...
March 29, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28350791/acid-suppressing-therapies-and-subsite-specific-risk-of-stomach-cancer
#17
E Christina M Wennerström, Jacob Simonsen, M Constanza Camargo, Charles S Rabkin
BACKGROUND: Associations of stomach cancer risk with histamine type-2 receptor antagonists (H2RA) and proton-pump inhibitors (PPI) are controversial. We hypothesised that proximal extension of Helicobacter pylori infection from acid suppression would disproportionately increase cancers at proximal subsites. METHODS: A total of 1 563 860 individuals in the Danish Prescription Drug Registry first prescribed acid-suppressive drugs 1995-2011 were matched to unexposed population-based controls...
April 25, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28350359/nf-%C3%AE%C2%BAb-signaling-in-gastric-cancer
#18
REVIEW
Olga Sokolova, Michael Naumann
Gastric cancer is a leading cause of cancer death worldwide. Diet, obesity, smoking and chronic infections, especially with Helicobacter pylori, contribute to stomach cancer development. H. pylori possesses a variety of virulence factors including encoded factors from the cytotoxin-associated gene pathogenicity island (cagPAI) or vacuolating cytotoxin A (VacA). Most of the cagPAI-encoded products form a type 4 secretion system (T4SS), a pilus-like macromolecular transporter, which translocates CagA into the cytoplasm of the host cell...
March 28, 2017: Toxins
https://www.readbyqxmd.com/read/28346875/helicobacter-pylori-infection-detection-from-gastric-x-ray-images-based-on-feature-fusion-and-decision-fusion
#19
Kenta Ishihara, Takahiro Ogawa, Miki Haseyama
In this paper, a fully automatic method for detection of Helicobacter pylori (H. pylori) infection is presented with the aim of constructing a computer-aided diagnosis (CAD) system. In order to realize a CAD system with good performance for detection of H. pylori infection, we focus on the following characteristic of stomach X-ray examination. The accuracy of X-ray examination differs depending on the symptom of H. pylori infection that is focused on and the position from which X-ray images are taken. Therefore, doctors have to comprehensively assess the symptoms and positions...
March 21, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28339735/triage-quality-control-is-missing-tools-a-new-observation-technique-for-ed-quality-improvement
#20
Tomi Malmström, Veli-Pekka Harjola, Paulus Torkki, Salla Kumpulainen, Raija Malmström
Objective: Correct assessment of patient urgency is critical to ensuring patient safety in emergency departments (EDs). Although significant time and effort have been devoted to developing triage systems, less attention has been paid to the development of quality control. The aim of this study is to introduce and test observation technique, which enables identifying of patient groups at risk of erroneous assessment in triage. The introduced technique is aimed to be less laborious to use than existing triage quality control methods...
February 23, 2017: International Journal for Quality in Health Care
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