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https://www.readbyqxmd.com/read/28987410/variable-dual-carbon-bromine-stable-isotope-fractionation-during-enzyme-catalyzed-reductive-dehalogenation-of-brominated-ethenes
#1
Angela Woods, Kevin Kuntze, Faina Gelman, Ludwik Halicz, Ivonne Nijenhuis
The potential of compound-specific stable isotope analysis (CSIA) to characterize biotransformation of brominated organic compounds (BOCs) was assessed and compared to chlorinated analogues. Sulfurospirillum multivorans and Desulfitobacterium hafniense PCE-S catalyzed the dehalogenation of tribromoethene (TBE) to either vinyl bromide (VB) or ethene, respectively. Significantly lower isotope fractionation was observed for TBE dehalogenation by S. multivorans (εC = -1.3 ± 0.2‰) compared to D. hafniense (εC = -7...
September 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/28978881/risk-factors-for-rebleeding-and-risk-based-follow-up-of-obscure-gastrointestinal-bleeding-after-its-initial-diagnosis
#2
Genta Uchida, Masanao Nakamura, Osamu Watanabe, Takeshi Yamamura, Masanobu Matsushita, Takuya Ishikawa, Kazuhiro Furukawa, Kohei Funasaka, Eizaburo Ohno, Hiroki Kawashima, Ryoji Miyahara, Hidemi Goto, Yoshiki Hirooka
Capsule endoscopy (CE) and double-balloon endoscopy (DBE) have revolutionized the diagnosis and treatment of obscure gastrointestinal bleeding (OGIB). Although CE and DBE provide access to the small bowel and OGIB can be effectively treated by the identification of specific bleeding lesions, some patients experience rebleeding after small bowel investigation. There are no definite algorithms to determine the best follow-up period for patients with OGIB. The purpose of this study was to investigate the long-term outcomes and risk factors for rebleeding and to develop a follow-up strategy for patients with overt OGIB...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/28974886/evidences-supporting-the-vascular-etiology-of-post-double-balloon-enteroscopy-pancreatitis-study-in-porcine-model
#3
REVIEW
Rafael Latorre, Octavio López-Albors, Federico Soria, Esther Morcillo, Pilar Esteban, Enrique Pérez-Cuadrado-Robles, Enrique Pérez-Cuadrado-Martínez
Double balloon enteroscopy (DBE) is an endoscopic technique broadly used to diagnose and treat small bowel diseases. Among the associated complications of the oral DBE, post-procedure pancreatitis has taken the most attention due to its gravity and the thought that it might be associated to the technique itself and anatomical features of the pancreas. However, as the etiology has not been clarified yet, this paper aims to review the published literature and adds new results from a porcine animal model. Biochemical markers, histological sections and the vascular perfusion of the pancreas were monitored in the pig during DBE practice...
September 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28958410/development-and-validation-of-a-new-scoring-system-to-determine-the-necessity-of-small-bowel-endoscopy-in-obscure-gastrointestinal-bleeding
#4
Genta Uchida, Masanao Nakamura, Osamu Watanabe, Takeshi Yamamura, Takuya Ishikawa, Kazuhiro Furukawa, Kohei Funasaka, Eizaburo Ohno, Hiroki Kawashima, Ryoji Miyahara, Hidemi Goto, Yoshiki Hirooka
BACKGROUND: Small bowel capsule endoscopy (SBCE) is the recommended first-line procedure for obscure gastrointestinal bleeding (OGIB). However, a method for predicting the necessity of subsequent double-balloon endoscopy (DBE) has not been established. AIMS: We aimed to develop a new scoring system that predicts the necessity of DBE in OGIB. METHODS: A retrospective study was performed in 330 patients who underwent SBCE for OGIB at Nagoya University Hospital...
September 21, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28940412/the-role-of-pre-operative-imaging-and-double-balloon-enteroscopy-in-the-surgical-management-of-small-bowel-neuroendocrine-tumors-is-it-necessary
#5
Nicholas Manguso, Alexandra Gangi, Jeffrey Johnson, Attiya Harit, Nicholas Nissen, Laith Jamil, Simon Lo, Ashley Wachsman, Andrew Hendifar, Farin Amersi
BACKGROUND AND OBJECTIVES: Pre-operative localization of small bowel neuroendocrine tumors (SBNET) is important for operative planning. The aim was to determine the effectiveness of pre-operative imaging and double-balloon enteroscopy (DBE) in identifying extent of disease. METHODS: Database review identified 85 patients with primary SBNET between 2006 and 2013. Analysis included patients who underwent imaging, endoscopy, and surgery at our institution. RESULTS: Average age was 60...
September 20, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28877570/hookworm-infection-a-neglected-cause-of-overt-obscure-gastrointestinal-bleeding
#6
Kun-Yan Wei, Qiong Yan, Bo Tang, Shi-Ming Yang, Peng-Bing Zhang, Ming-Ming Deng, Mu-Han Lü
Hookworm infections are widely prevalent in tropical and subtropical areas, especially in low income regions. In the body, hookworms parasitize the proximal small intestine, leading to chronic intestinal hemorrhage and iron deficiency anemia. Occasionally, hookworms can cause overt gastrointestinal bleeding, but this is often ignored in heavily burdened individuals from endemic infectious areas. A total of 424 patients with overt obscure gastrointestinal bleeding were diagnosed by numerous blood tests or stool examinations as well as esophagogastroduodenoscopy, colonoscopy, capsule endoscopy or double-balloon enteroscopy...
August 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28846412/biotransformation-of-the-flame-retardant-1-2-dibromo-4-1-2-dibromoethyl-cyclohexane-tbech-in-vitro-by-human-liver-microsomes
#7
Khanh-Hoang Nguyen, Mohamed Abou-Elwafa Abdallah, Thomas Moehring, Stuart Harrad
The technical mixture of 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane (TBECH or DBE-DBCH) and the pure β-TBECH isomer were subjected to in vitro biotransformation by human liver microsomes (HLM). After 60 min of incubation, 5 potential metabolites of TBECH were identified in microsomal assays of both the TBECH mixture and β-TBECH using ultraperformance liquid chromatography-Q-Exactive Orbitrap mass spectrometry. These include mono- and dihydroxylated TBECH and mono- and dihydroxylated TriBECH as well as an α-oxidation metabolite bromo-(1,2-dibromocyclohexyl)-acetic acid...
September 7, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28837520/findings-of-retrograde-contrast-study-through-double-balloon-enteroscopy-predict-the-risk-of-bowel-resections-in-patients-with-crohn-s-disease-with-small-bowel-stenosis
#8
Noriko Okazaki, Toshihiro Inokuchi, Sakiko Hiraoka, Masayasu Ohmori, Shiho Takashima, Daisuke Takei, Yuusaku Sugihara, Masahiro Takahara, Keita Harada, Seiji Kawano, Hiroyuki Okada, Jun Kato
BACKGROUND: Patients with Crohn's disease (CD) with small bowel strictures are at risk of surgery. Double-balloon enteroscopy (DBE) can evaluate the status of the small intestine, and retrograde contrast through the scope enables the surgeon to obtain information beyond the reach of the scope. This study aimed to examine whether a retrograde contrast study through DBE could be used as a predictor of subsequent surgery in patients with CD with small intestinal strictures. METHODS: The findings of DBE with retrograde contrast in 48 patients CD with small bowel strictures were examined...
August 22, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28830000/fate-and-abundance-of-classical-and-heteroatomic-naphthenic-acid-species-after-advanced-oxidation-processes-insights-and-indicators-of-transformation-and-degradation
#9
Mohamed N A Meshref, Pamela Chelme-Ayala, Mohamed Gamal El-Din
The toxicological effects from all components in oil sands process-affected water (OSPW) are not known. Alternatively, monitoring the variations and abundance of different classes and compounds after treatments might be a useful approach in OSPW remediation. In this study, the variations in the compositions of classical and heteroatomic naphthenic acids (NAs) after treatment using advanced oxidation processes (AOPs), mainly ozone and peroxone, and two different mass spectrometry methods; ultra-performance liquid chromatography time-of-flight (UPLC-TOFMS) and Fourier transform ion cyclotron resonance (FTICR-MS), were examined...
November 15, 2017: Water Research
https://www.readbyqxmd.com/read/28794359/analysis-of-the-risk-factors-of-surgery-after-endoscopic-balloon-dilation-for-small-intestinal-strictures-in-crohn-s-disease-using-double-balloon-endoscopy
#10
Yu Nishida, Shuhei Hosomi, Hirokazu Yamagami, Tomomi Yukawa, Yasuaki Nagami, Fumio Tanaka, Noriko Kamata, Tetsuya Tanigawa, Masatsugu Shiba, Toshio Watanabe, Kazunari Tominaga, Yasuhiro Fujiwara, Tetsuo Arakawa
Objective Balloon-assisted endoscopy enables access to and treatment of strictures in the small intestine using endoscopic balloon dilation (EBD); however, the long-term outcomes of EBD have not been sufficiently evaluated. This study evaluated the long-term outcomes of EBD in Crohn's disease to identify the risk factors associated with the need for subsequent surgical intervention. Methods We retrospectively analyzed patients with Crohn's disease who had undergone EBD with double-balloon endoscopy (DBE) for small intestinal strictures at a single center between 2006 and 2015...
September 1, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28689268/successful-removal-of-an-internal-pancreatic-stent-that-migrated-into-the-bile-duct-using-double-balloon-enteroscopy-after-pancreaticoduodenectomy
#11
Seiko Hirono, Manabu Kawai, Yasunobu Yamashita, Ken-Ichi Okada, Motoki Miyazawa, Masaki Ueno, Yoshimasa Maeda, Masahiro Itonaga, Masayuki Kitano, Hiroki Yamaue
PURPOSE: Internal stents used during pancreaticoduodenectomy (PD) are generally spontaneously passed through the rectum by defecation. However, we encountered six patients with internal stents that migrated into the bile duct after PD. We herein report the outcomes of these six patients and the usefulness of double-balloon enteroscopy (DBE) for removal of such stents from the bile duct. METHODS: An internal stent was placed across pancreaticojejunostomy in 416 (68...
July 8, 2017: Surgery Today
https://www.readbyqxmd.com/read/28664384/a-case-of-protein-losing-enteropathy-caused-by-sclerosing-mesenteritis-diagnosed-with-capsule-endoscopy-and-double-balloon-endoscopy
#12
Yasushi Saito, Katsushi Hiramatsu, Takuto Nosaka, Yoshihiko Ozaki, Kazuto Takahashi, Tatsushi Naito, Kazuya Ofuji, Hidetaka Matsuda, Masahiro Ohtani, Tomoyuki Nemoto, Yoshiaki Imamura, Yasunari Nakamoto
A 75-year-old man presented with abdominal distension, hypoproteinemia, ascites and a 35-mm mass in the small bowel mesentery. Laparotomy was performed, and he was diagnosed with sclerosing mesenteritis. His clinical condition improved, with computed tomography (CT) showing tumor shrinkage and decreasing ascites after administration of prednisolone; however, on drug withdrawal, abdominal fullness recurred and CT revealed an enlarging tumor and increasing ascites. Capsule endoscopy (CE) and double-balloon enteroscopy (DBE) were performed to further investigate hypoalbuminemia, which revealed white villi, white nodules, white debris, and mucosal edema in the jejunum...
August 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28641560/functional-and-catalytic-characterization-of-the-detoxifying-enzyme-haloalkane-dehalogenase-from-rhizobium-leguminosarum
#13
Nikolaos Georgakis, Evangelia Chronopoulou, Maria Anna Gad, Dimitrios Skliros, Rodica Efrose, Emmanouil Flemetakis, Nikolaos E Labrou
BACKGROUND: Haloalkane dehalogenases (EC 3.8.1.5, HLDs) are α/β-hydrolases which catalyze the irreversible cleavage of carbon-halogen bonds of haloalkanes, producing an alcohol, a halide and a hydrogen ion. Haloalkanes are acutely toxic to animals and humans and their toxic effects are mainly observed in the liver, kidneys and central nervous system. OBJECTIVE: In the present work, the haloalkane dehalogenase from Rhizobium leguminosarum bv. trifolii (DrlA) was characterized...
2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28611528/preoperative-detection-and-localization-of-small-bowel-hemangioma-two-case-reports
#14
Nobuhisa Takase, Keisuke Fukui, Takafumi Tani, Tohru Nishimura, Tomohiro Tanaka, Naoki Harada, Kimihiko Ueno, Manabu Takamatsu, Akihiko Nishizawa, Akiharu Okamura, Kunihiko Kaneda
Among the various diagnostic modalities for small bowel hemangioma, video capsule endoscopy (VCE) and double-balloon enteroscopy (DBE) can be recommended as part of the work-up in patients with obscure gastrointestinal bleeding (OGIB). DBE is superior to VCE in the accuracy of diagnosis and therapeutic potential, while in most cases total enteroscopy cannot be achieved through only the antegrade or retrograde DBE procedures. As treatment for small bowel bleeding, especially spout bleeding, localization of the lesion for the decision of DBE insertion facilitates early treatment, such as endoscopic hemostatic clipping, allowing patients to avoid useless transfusion and the worsening of their disease into life-threatening status...
May 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28611338/endoscopic-retrograde-cholangiopancreatography-with-double-balloon-enteroscope-in-patients-with-altered-gastrointestinal-anatomy-a-meta-analysis
#15
REVIEW
Xiao-Dong Shao, Xing-Shun Qi, Xiao-Zhong Guo
BACKGROUND/AIMS: The aim of this study was to evaluate the effectiveness and safety of endoscopic retrograde cholangiopancreatography with double balloon enteroscope (DBE-ERCP) in patients with altered gastrointestinal anatomy in a meta-analysis. MATERIALS AND METHODS: A comprehensive literature search was conducted on PubMed, EMBASE, and Cochrane library covering the period from January 2001 to December 2015. Data were selected and abstracted from eligible studies and were pooled using a random-effects model...
May 2017: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/28599194/spatiotemporal-patterns-and-relationships-among-the-diet-biochemistry-and-exposure-to-flame-retardants-in-an-apex-avian-predator-the-peregrine-falcon
#16
Kim J Fernie, Dominique Chabot, Louise Champoux, Samantha Brimble, Mehran Alaee, Sarah Marteinson, Da Chen, Vince Palace, David M Bird, Robert J Letcher
Flame retardants (FR) are industrial chemicals and some are proven environmental contaminants that accumulate in predatory birds. Few studies have examined the influence of diet on FR profiles in nestling raptors and the possible physiological implications of such FR exposure. The objectives of this research were (1) to determine spatial patterns of ≤ 48 polybrominated diphenyl ether (PBDE) congeners and ≤ 26 non-PBDE FRs, including organophosphate esters (OPEs), in nestling peregrine falcons (Falco peregrinus) across the Canadian Great Lakes-St...
October 2017: Environmental Research
https://www.readbyqxmd.com/read/28567376/long-term-effects-of-video-capsule-endoscopy-in-the-management-of-obscure-gastrointestinal-bleeding
#17
REVIEW
Georgios Tziatzios, Paraskevas Gkolfakis, George D Dimitriadis, Konstantinos Triantafyllou
Obscure gastrointestinal bleeding (OGIB) accounts for approximately 5% of all gastrointestinal (GI) hemorrhages. It usually arises from a small bowel lesion beyond the reach of conventional endoscopy including esophagogastroduodenoscopy and colonoscopy. Video capsule endoscopy (VCE) revolutionized the evaluation of OGIB patients since it allows reliable and noninvasive visualization of the small bowel mucosal surface. Since 2001, VCE has evolved into an efficient technology integrated in clinical practice. It is the cornerstone in the algorithm of OGIB investigation given its high diagnostic yield, which compares favorably to that of double-balloon enteroscopy (DBE)...
May 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28567116/efficacy-of-double-balloon-enteroscopy-for-small-bowel-polypectomy-clinical-and-economic-evaluation
#18
Gabriel Rahmi, Marie-Amélie Vinet, Guillaume Perrod, Jean-Christophe Saurin, Elia Samaha, Thierry Ponchon, Jean-Marc Canard, Joël Edery, Hassani Maoulida, Gilles Chatellier, Isabelle Durand-Zaleski, Christophe Cellier
BACKGROUND: We evaluated first the feasibility of endoscopic small-bowel polypectomy and second, the economic aspects, by comparing the cost of endoscopic and surgical polyp resection. METHODS: A prospective, observational, multicenter study included 494 patients with positive capsule endoscopy (CE) before double-balloon enteroscopy (DBE). We selected only CE with at least one polyp. The retrospective economic evaluation compared patients treated by DBE or surgery for small-bowel polypectomy...
June 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28525835/emerging-and-legacy-flame-retardants-in-uk-human-milk-and-food-suggest-slow-response-to-restrictions-on-use-of-pbdes-and-hbcdd
#19
Fang Tao, Mohamed Abou-Elwafa Abdallah, Danielle C Ashworth, Philippa Douglas, Mireille B Toledano, Stuart Harrad
The legacy flame retardants (LFRs) polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCDD), together with six emerging flame retardants (EFRs) were measured in United Kingdom (UK) human milk collected in 2010 (n=25) and 2014-15 (n=10). These data are the first report of the presence of EFRs in UK human milk. The most abundant EFR was β-tetrabromoethylcyclohexane (DBE-DBCH) (average=2.5ng/g lw; geometric mean=1.5ng/g lw), which is comparable to the concentrations of the most abundant LFRs i...
May 16, 2017: Environment International
https://www.readbyqxmd.com/read/28509570/learners-perspectives-on-the-provision-of-condoms-in-south-african-public-schools
#20
W E de Bruin, S Panday-Soobrayan
A stubborn health challenge for learners in South African public schools concerns sexual and reproductive health and rights (SRHR). In 2015, the Department of Basic Education (DBE) proposed the provision of condoms and SRHR-services to learners in schools. This study aimed to contribute to the finalisation and implementation of DBE's policy by exploring learners' perspectives on the provision of condoms and SRHR-services in schools. Sixteen focus group discussions were conducted with learners (n = 116) from 33 public schools, to assess their attitudes, social influences, and needs and desires regarding condom provision and SRHR-services in schools...
December 2017: AIDS Care
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