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https://www.readbyqxmd.com/read/28440424/therapeutic-potential-of-the-antidiabetic-drug-metformin-in-small-bowel-adenocarcinoma
#1
Taiga Chiyo, Kiyohito Kato, Hisakazu Iwama, Shintaro Fujihara, Koji Fujita, Tomoko Tadokoro, Kyoko Ohura, Eri Samukawa, Yoshimi Yamana, Nobuya Kobayashi, Tae Matsunaga, Noriko Nishiyama, Maki Ayaki, Tatsuo Yachida, Asahiro Morishita, Hideki Kobara, Hirohito Mori, Tsutomu Masaki
Small bowel adenocarcinoma (SBAC) accounts for 3% of all gastrointestinal tract tumors and approximately 0.5% of all cancer cases. Recent studies have indicated that the use of metformin, one of the most commonly prescribed antidiabetic drugs, is associated with a better prognosis for certain malignant diseases. However, there have been no reports on the effect of metformin in SBAC. In the present study, we evaluated the effect of metformin on human SBAC cell proliferation in vitro and in vivo and identified the microRNAs (miRNAs) associated with its antitumor effects...
April 20, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28437000/magnetically-guided-capsule-endoscopy
#2
REVIEW
Naveen Shamsudhin, Vladimir I Zverev, Henrik Keller, Salvador Pane, Peter W Egolf, Bradley J Nelson, Alexander M Tishin
Wireless capsule endoscopy (WCE) is a powerful tool for medical screening and diagnosis, where a small capsule is swallowed and moved by means of natural peristalsis and gravity through the human gastrointestinal (GI) tract. The camera-integrated capsule allows for visualization of the small intestine, a region which was previously inaccessible to classical flexible endoscopy. As a diagnostic tool, it allows to localize the sources of bleedings in the middle-part of the gastrointestinal tract and to identify diseases such as inflammatory bowel disease (Crohn's disease), Polyposis-Syndrome and tumors...
April 24, 2017: Medical Physics
https://www.readbyqxmd.com/read/28433612/use-of-enteroscopy-for-the-detection-of-malignant-and-pre-malignant-lesions-of-the-small-bowel-in-complicated-celiac-disease-a-meta-analysis
#3
REVIEW
Luca Elli, Giovanni Casazza, Martina Locatelli, Federica Branchi, Francesca Ferretti, Dario Conte, Mirella Fraquelli
BACKGROUND AND AIMS: Enteroscopy (wireless, wired) is the reference standard for small-bowel (SB) diseases and it has been applied to detect SB malignancies in complicated celiac disease (CD) with heterogeneous results. The aim of this meta-analysis is to obtain a diagnostic yield (DY) by pooling the data of studies that investigated the use of enteroscopy to detect SB adverse events in CD. METHODS: We performed an online search for studies estimating the DY of wireless and wired enteroscopy in predicting the presence of SB pre-malignant and/or malignant lesions...
April 19, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28428272/hur-small-molecule-inhibitor-elicits-differential-effects-in-adenomatosis-polyposis-and-colorectal-carcinogenesis
#4
Michaela Lang, David Berry, Katharina Passecker, Ildiko Mesteri, Sabin Bhuju, Florian Ebner, Vitaly Sedlyarov, Rayko Evstatiev, Kyle Dammann, Alexander Loy, Orest Kuzyk, Pavel Kovarik, Vineeta Khare, Martin Beibel, Guglielmo Roma, Nicole Meisner-Kober, Christoph Gasche
HuR is an RNA-binding protein implicated in immune homeostasis and various cancers, including colorectal cancer. HuR binding to AU-rich elements within the 3' untranslated region of mRNAs encoding oncogenes, growth factors, and various cytokines leads message stability and translation. In this study, we evaluated HuR as a small-molecule target for preventing colorectal cancer in high-risk groups such as those with familial adenomatosis polyposis (FAP) or inflammatory bowel disease (IBD). In human specimens, levels of cytoplasmic HuR were increased in colonic epithelial cells from patients with IBD, IBD-cancer, FAP-adenoma, and colorectal cancer, but not in patients with IBD-dysplasia...
February 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28426721/diagnosis-treatment-and-prognosis-of-small-bowel-volvulus-in-adults-a-monocentric-summary-of-a-rare-small-intestinal-obstruction
#5
Xiaohang Li, Jialin Zhang, Baifeng Li, Dehui Yi, Chengshuo Zhang, Ning Sun, Wu Lv, Ao Jiao
OBJECTIVES: Small bowel volvulus is a rare disease, which is also challenging to diagnose. The aims of this study were to characterize the clinical and radiological features associated with small bowel volvulus and treatment and to identify risk factors for associated small bowel necrosis. METHODS: Patients with small bowel volvulus who underwent operations from January 2001 to December 2015 at the First Affiliated Hospital of China Medical University (Shenyang, China) were reviewed...
2017: PloS One
https://www.readbyqxmd.com/read/28421251/defining-the-ultrasound-longitudinal-natural-history-of-newly-diagnosed-pediatric-small-bowel-crohn-disease-treated-with-infliximab-and-infliximab-azathioprine-combination-therapy
#6
Jonathan R Dillman, Soudabeh Fazeli Dehkordy, Ethan A Smith, Michael A DiPietro, Ramon Sanchez, Vera DeMatos-Maillard, Jeremy Adler, Bin Zhang, Andrew T Trout
BACKGROUND: Little is known about changes in the imaging appearances of the bowel and mesentery over time in either pediatric or adult patients with newly diagnosed small bowel Crohn disease treated with anti-tumor necrosis factor-alpha (anti-TNF-α) therapy. OBJECTIVE: To define how bowel ultrasound findings change over time and correlate with laboratory inflammatory markers in children who have been newly diagnosed with pediatric small bowel Crohn disease and treated with infliximab...
April 18, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28405316/endoscopic-techniques-to-detect-small-bowel-neuroendocrine-tumors-a-literature-review
#7
REVIEW
Roberta Elisa Rossi, Dario Conte, Luca Elli, Federica Branchi, Sara Massironi
BACKGROUND: The diagnosis of small-bowel neuroendocrine tumors (SbNETs) has improved with the advent of video capsule endoscopy (CE) and double-balloon enteroscopy (DBE). The data describing the efficacy of CE/DBE in the detection of SbNETs are scanty. AIM: The aim of this article is to review the current evidence on the role of DBE and CE in the diagnosis of SbNETs. MATERIAL AND METHODS: A bibliographical search was performed in PubMed using the following keywords: "neuroendocrine tumors and enteroscopy/and capsule endoscopy" and "small bowel neuroendocrine tumors...
February 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28400196/association-of-rnaset2-gene-polymorphisms-with-decreased-expression-and-clinical-characteristics-of-severity-in-crohn-s-disease
#8
Rivkah Gonsky, Phillip Fleshner, Richard L Deem, Eva Biener-Ramanujan, Dalin Li, Alka A Potdar, Janine Bilsborough, Shaohong Yang, Dermot P B McGovern, Stephan R Targan
BACKGROUND & AIMS: Variants in the tumor necrosis factor superfamily member 15 gene (TNFSF15, also called TL1A) have been associated with risk for inflammatory bowel diseases (IBD). TL1A affects expression of multiple cytokines to promote mucosal inflammation. Little is known about the TL1A-response pathways that regulate cytokine expression. We investigated T-cell gene expression patterns to determine the mechanisms by which TL1A regulates cytokine production, and whether these associate with outcomes of patients with Crohn's disease (CD)...
April 8, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28396341/bioactivity-of-oral-linaclotide-in-human-colorectum-for-cancer-chemoprevention
#9
David S Weinberg, Jieru E Lin, Nathan R Foster, Gary J Della'Zanna, Asad Umar, Drew K Seisler, Walter K Kraft, David M Kastenberg, Leo C Katz, Paul J Limburg, Scott A Waldman
Guanylate cyclase C (GUCY2C) is a tumor suppressing receptor silenced by loss of expression of its luminocrine hormones guanylin and uroguanylin early in colorectal carcinogenesis. This observation suggests oral replacement with a GUCY2C agonist may be an effective targeted chemoprevention agent. Linaclotide is an FDA approved oral GUCY2C agonist formulated for gastric release, inducing fluid secretion into the small bowel to treat chronic idiopathic constipation. The ability of oral linaclotide to induce a pharmacodynamic response in epithelial cells of the colorectum in humans remains undefined...
April 10, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28393434/multivisceral-transplantation-for-abdominal-tumors-in-children-a-single-center-experience-and-review-of-the-literature
#10
Eliza Lee, Nicole Hodgkinson, Rima Fawaz, Khashayar Vakili, Heung Bae Kim
Standard management of intra-abdominal pediatric solid tumors requires complete resection. However, tumors with multiple organ and vascular involvement present a unique surgical challenge. We conducted a retrospective chart review of four patients, aged 2-14 years, undergoing MVT for intra-abdominal tumors with significant involvement of the visceral arteries and/or portomesenteric venous system at our institution. Indications for MVT included hepatocellular carcinoma, inflammatory myofibroblastic tumor, and two cases of hepatoblastoma...
April 9, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28370422/clinical-practice-guideline-for-enteroscopy
#11
REVIEW
Hironori Yamamoto, Haruhiko Ogata, Takayuki Matsumoto, Naoki Ohmiya, Kazuo Ohtsuka, Kenji Watanabe, Tomonori Yano, Toshiyuki Matsui, Kazuhide Higuchi, Tetsuya Nakamura, Kazuma Fujimoto
The management of small bowel diseases has evolved since the advent of capsule endoscopy (CE) and balloon-assisted enteroscopy (BAE). One of the most common indications of enteroscopy is obscure gastrointestinal bleeding (OGIB), and followed by small bowel stenosis, tumors, and inflammatory bowel diseases. Although these enteroscopes have been regarded as useful tools, a proper guideline is urged to ensure that we manipulate these enteroscopes safely and efficiently in clinical practice. Herein, the Japanese Gastroenterological Endoscopy Society (JGES) has developed "Clinical Practice Guideline for Enteroscopy" in collaboration with the Japanese Society of Gastroenterology, the Japanese Gastroenterological Association, and the Japanese Association for Capsule Endoscopy...
March 31, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28360205/simulation-of-tracer-dose-reduction-in-18-f-fdg-positron-emission-tomography-magnetic-resonance-imaging-pet-mri-effects-on-oncologic-reading-image-quality-and-artifacts
#12
Ferdinand Seith, Holger Schmidt, Julia Kunz, Thomas Kuestner, Sergios Gatidis, Konstantin Nikolaou, Christian la Fougère, Nina F Schwenzer
Purpose: Aim of our study was to evaluate the effect of stepwise reduced doses on objective and subjective image parameters and on oncologic readings in whole-body (18)F-FDG-PET/MRI. Material and Methods: We retrospectively simulated the stepwise reduction of (18)F-FDG doses of 19 patients (50.9 ± 11.7 y/o, Body-Mass-Index (BMI) 22.8 ± 3.2) who received a whole-body PET/MRI examination from 3 to 0.5 MBq/kgBW in intervals of 0.25. Objective imaging parameters were assessed by measuring the standardized uptake value (SUV) and coefficient of variation (CV) in different regions (aorta, liver, spleen, kidney, small bowel, lumbar vertebra, psoas muscle, urinary bladder) as well as the noise equivalent count rates (NECR) in each bed position...
March 30, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28350747/short-article-small-intestinal-mucosal-injury-in-patients-taking-chemotherapeutic-agents-for-solid-cancers
#13
Maria P Dore, Giovanni M Pes, Alberto Murino, Bianca Quarta Colosso, Marco Pennazio
OBJECTIVE: Chemotherapy for cancer is a systemic treatment often associated with side effects than can be debilitating and, in some cases, life-threatening. Few data are available on intestinal enterotoxicity. Wireless video capsule endoscopy (VCE) is a noninvasive method of imaging the small intestine. This study presents the results of VCE in patients with solid tumors undergoing antineoplastic regimens with agents, notably for toxicity for the gastrointestinal mucosa (i.e. carboplatin, cyclophosphamide, 5-fluorouracil, methotrexate, and cisplatin)...
May 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28347321/the-150-most-important-questions-in-cancer-research-and-clinical-oncology-series-questions-6-14-edited-by-chinese-journal-of-cancer
#14
EDITORIAL
(no author information available yet)
To accelerate our endeavors to overcome cancer, Chinese Journal of Cancer has launched a program of publishing 150 most important questions in cancer research and clinical oncology. In this article, nine more questions are presented as followed. Question 6. Why do nasopharyngeal carcinomas rarely metastasize to the brain? Question 7. Can distant spread of cancer cells be blocked by inhibiting the remodeling of high endothelial venules in the sentinel lymph node? Question 8. What sort of live-imaging techniques can be developed to directly observe the dynamic processes of metastasis? Question 9...
March 27, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28316066/long-term-results-and-tolerability-of-tandem-peptide-receptor-radionuclide-therapy-with-90-y-177-lu-dotatate-in-neuroendocrine-tumors-with-respect-to-the-primary-location-a-10-year-study
#15
Jolanta Kunikowska, Dariusz Pawlak, Marianna I Bąk, Beata Kos-Kudła, Renata Mikołajczak, Leszek Królicki
INTRODUCTION: The peptide receptor radionuclide therapy (PRRT) with (90)Y and (177)Lu is a form of molecular targeted therapy for inoperable or disseminated neuroendocrine tumors (NET). AIM: The aim of the study was to evaluate clinical results and long-term side effects of tandem (90)Y /(177)Lu-DOTATATE therapy in patients with NET. Additionally, we evaluated clinical results with reference to the primary site. MATERIALS AND METHODS: 59 patients with disseminated NET were included in the study prospectively...
March 18, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28303455/duodenal-cancer-in-a-young-patient-with-peuts-jeghers-syndrome-harboring-an-entire-deletion-of-the-stk11-gene
#16
Satoshi Teramae, Koichi Okamoto, Kumiko Tanaka, Reika Matsumoto, Shinji Kitamura, Tetsuo Kimura, Masahiro Sogabe, Hiroshi Miyamoto, Naoki Muguruma, Yoshimi Bando, Mitsuo Shimada, Tetsuji Takayama
A 21-year-old woman with Peuts-Jeghers syndrome (PJS) was referred to our hospital for gastrointestinal surveillance. She had been diagnosed as having PJS from a young age based on her family history and the presence of mucocutaneous pigmentation on her lips and oral mucosa. Her mother and brother had PJS harboring an entire deletion of the STK11 gene. She had tetralogy of Fallot, atrial tachycardia, sick sinus syndrome, and mental retardation in her past history. Esophagogastroduodenoscopy identified a protruded lesion with a depressed area that occupied the lumen half-circumferentially in the duodenal second portion and also showed a 10-mm protruded lesion on the anterior wall of the lower gastric body...
March 16, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28303430/management-of-neuroendocrine-tumor-liver-metastases-long-term-outcomes-and-prognostic-factors-from-a-large-prospective-database
#17
Mark Fairweather, Richard Swanson, Jiping Wang, Lauren K Brais, Trevor Dutton, Matthew H Kulke, Thomas E Clancy
BACKGROUND: Liver-directed therapies have been used to treat neuroendocrine liver metastases (NELM) for both symptomatic improvement and tumor growth control. We reviewed our experience with NELM to investigate the outcomes of available treatment modalities and to identify prognostic factors for survival. METHODS: We identified all patients with NELM, who were managed at our institution, from a prospectively collected institutional database. Overall survival (OS) was determined for each treatment modality...
March 16, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28300658/effect-of-particle-size-on-the-biodistribution-toxicity-and-efficacy-of-drug-loaded-polymeric-nanoparticles-in-chemoradiotherapy
#18
Joseph M Caster, Stephanie K Yu, Artish N Patel, Nicole J Newman, Zachary J Lee, Samuel B Warner, Kyle T Wagner, Kyle C Roche, Xi Tian, Yuanzeng Min, Andrew Z Wang
Nanoparticle (NP) therapeutics can improve the therapeutic index of chemoradiotherapy (CRT). However, the effect of NP physical properties, such particle size, on CRT is unknown. To address this, we examined the effects of NP size on biodistribution, efficacy and toxicity in CRT. PEG-PLGA NPs (50, 100, 150nm mean diameters) encapsulating wotrmannin (wtmn) or KU50019 were formulated. These NP formulations were potent radiosensitizers in vitro in HT29, SW480, and lovo rectal cancer lines. In vivo, the smallest particles avoided hepatic and splenic accumulation while more homogeneously penetrating tumor xenografts than larger particles...
March 11, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28289512/giant-abdominal-osteosarcoma-causing-intestinal-obstruction-treated-with-resection-and-adjuvant-chemotherapy
#19
Alexandros Diamantis, Grigorios Christodoulidis, Dionysia Vasdeki, Foteini Karasavvidou, Evangelos Margonis, Konstantinos Tepetes
Extraskeletal osteosarcoma (ESOS) is an uncommon tumor that accounts for 1% of all soft tissue sarcomas and 4% of all osteosarcomas. Its presentation may be atypical, while pain has been described as the most common symptom. Radiological findings include a large mass in the soft-tissues with massive calcifications, but no attachment to the adjacent bone or periosteum. We present the case of a 73-year-old gentle man who presented with a palpable, tender abdominal mass and symptoms of bowel obstruction. Computer tomography images revealed a large space-occupying heterogeneous, hyper dense soft tissue mass involving the small intestine...
February 27, 2017: World Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28287942/fdg-pet-ct-pitfalls-in-gynecologic-and-genitourinary-oncologic-imaging
#20
Amish Lakhani, Sairah R Khan, Nishat Bharwani, Victoria Stewart, Andrea G Rockall, Sameer Khan, Tara D Barwick
The role of whole-body positron emission tomography (PET)/computed tomography (CT) with fluorodeoxyglucose ( FDG fluorodeoxyglucose ) is now established in the assessment of many gynecologic and genitourinary malignant tumors. FDG fluorodeoxyglucose PET/CT has been widely adopted for staging assessments in patients with suspected advanced disease, in cases of suspected disease recurrence, and for determining prognosis in a number of malignancies. A number of pitfalls are commonly encountered when reviewing FDG fluorodeoxyglucose PET/CT scans in gynecologic and genitourinary cases; these pitfalls can be classified into those that yield potential false-positive or false-negative results...
March 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
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