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Clinical and Translational Gastroenterology

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https://www.readbyqxmd.com/read/28617448/diminishing-effectiveness-of-long-term-maintenance-topical-steroid-therapy-in-ppi-non-responsive-eosinophilic-esophagitis
#1
Swathi Eluri, Thomas M Runge, Jason Hansen, Bharati Kochar, Craig C Reed, Benjamin S Robey, John T Woosley, Nicholas J Shaheen, Evan S Dellon
OBJECTIVES: While topical corticosteroids are first-line therapy for eosinophilic esophagitis (EoE), the data regarding long-term effectiveness are lacking. We aimed to determine long-term histologic and endoscopic outcomes of maintenance therapy in EoE steroid responders. METHODS: We performed a retrospective study of adults with EoE at UNC Hospitals who had initial histologic response (<15 eos/hpf) after 8 weeks of topical steroids, and maintained on therapy...
June 15, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28617447/targeting-the-vasculature-in-hepatocellular-carcinoma-treatment-starving-versus-normalizing-blood-supply
#2
Ken Liu, Xiang Zhang, Weiqi Xu, Jinbiao Chen, Jun Yu, Jennifer R Gamble, Geoffrey W McCaughan
Traditional treatments for intermediate or advanced stage hepatocellular carcinoma (HCC) such as transarterial chemoembolization (TACE) and anti-angiogenesis therapies were developed to starve tumor blood supply. A new approach of normalizing structurally and functionally abnormal tumor vasculature is emerging. While TACE improves survival in selected patients, the resulting tumor hypoxia stimulates proliferation, angiogenesis, treatment resistance and metastasis, which limits its overall efficacy. Vessel normalization decreases hypoxia and improves anti-tumor immune infiltrate and drug delivery...
June 15, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28617446/cathepsin-l-and-b-as-potential-markers-for-liver-fibrosis-insights-from-patients-and-experimental-models
#3
Mansi Manchanda, Prasenjit Das, Gaurav P S Gahlot, Ratnakar Singh, Elke Roeb, Martin Roderfeld, Siddhartha Datta Gupta, Anoop Saraya, R M Pandey, Shyam S Chauhan
OBJECTIVES: Cathepsin L (CTSL) and B (CTSB) have a crucial role in extracellular matrix (ECM) degradation and tissue remodeling, which is a prominent feature of fibrogenesis. The aim of this study was to determine the role and clinical significance of these cathepsins in liver fibrosis. METHODS: Hepatic histological CTSL and CTSB expression were assessed in experimental models of liver fibrosis, patients with liver cirrhosis, chronic viral hepatitis, and controls by real-time PCR and immunohistochemistry...
June 15, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28594397/establishment-of-a-quick-and-highly-accurate-breath-test-for-aldh2-genotyping
#4
Ikuo Aoyama, Shinya Ohashi, Yusuke Amanuma, Kenshiro Hirohashi, Ayaka Mizumoto, Makiko Funakoshi, Mihoko Tsurumaki, Yukie Nakai, Katsuyuki Tanaka, Mariko Hanada, Aki Uesaka, Tsutomu Chiba, Manabu Muto
OBJECTIVES: Acetaldehyde, the first metabolite of ethanol, is a definite carcinogen for the esophagus, head, and neck; and aldehyde dehydrogenase 2 (ALDH2) is a mitochondrial enzyme that catalyzes the metabolism of acetaldehyde. The ALDH2 genotype exists as ALDH2*1/*1 (active ALDH2), ALDH2*1/*2 (heterozygous inactive ALDH2), and ALDH2*2/*2 (homozygous inactive ALDH2). Many epidemiological studies have reported that ALDH2*2 carriers are at high risk for esophageal or head and neck squamous cell carcinomas by habitual drinking...
June 8, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28569740/do-the-data-support-manometric-subclassifications-for-ineffective-esophageal-motility
#5
Saurabh Singhal, Takahiro Masuda, Sumeet K Mittal
No abstract text is available yet for this article.
June 1, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28569739/endoscopic-guided-measurement-of-mucosal-admittance-can-discriminate-gastroesophageal-reflux-disease-from-functional-heartburn
#6
Tomoaki Matsumura, Hideaki Ishigami, Mai Fujie, Takashi Taida, Shingo Kasamatsu, Kenichiro Okimoto, Keiko Saito, Daisuke Maruoka, Tomoo Nakagawa, Takeshi Suzuki, Tatsuro Katsuno, Makoto Arai
OBJECTIVES: A novel catheter that can measure mucosal admittance (MA), the inverse of impedance, was developed recently. In this pilot study, we aimed to clarify the usefulness of measuring MA for diagnosing gastroesophageal reflux disease (GERD). METHODS: We conducted two prospective studies. In the first study, esophageal MA was evaluated in 120 participants (24 with erosive esophagitis, 82 with heartburn but non-erosive esophagitis, and 14 healthy volunteers) and compared with the endoscopic findings...
June 1, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28518130/how-to-conduct-and-interpret-systematic-reviews-and-meta-analyses
#7
Siddharth Singh
Systematic reviews with or without meta-analyses serve a key purpose in critically and objectively synthesizing all available evidence regarding a focused clinical question and can inform clinical practice and clinical guidelines. Performing a rigorous systematic review is multi-step process, which includes (a) identifying a well-defined focused clinically relevant question, (b) developing a detailed review protocol with strict inclusion and exclusion criteria, (c) systematic literature search of multiple databases and unpublished data, in consultation with a medical librarian, (d) meticulous study identification and (e) systematic data abstraction, by at least two sets of investigators independently, (f) risk of bias assessment, and (g) thoughtful quantitative synthesis through meta-analysis where relevant...
May 18, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28492537/advantages-and-some-remaining-challenges-in-hereditary-gastrointestinal-cancer-panel-testing
#8
Tara Maga, Lara Balay, Barbara Jung
Colorectal cancer affects 1 in 20 men and women in their lifetime. About 30% of these cases have been shown to be familial while only about 5% are associated with a highly penetrant hereditary colon cancer syndrome. In many familial cases, however, no mutation in the commonly implicated CRC genes is found. With the development of next-generation sequencing, testing laboratories are now able to offer hereditary gastrointestinal panel testing, which allows for the simultaneous sequencing of a much broader set of genes associated with CRC...
May 11, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28448072/evaluation-of-ptgs2-expression-pik3ca-mutation-aspirin-use-and-colon-cancer-survival-in-a-population-based-cohort-study
#9
Ronan T Gray, Marie M Cantwell, Helen G Coleman, Maurice B Loughrey, Peter Bankhead, Stephen McQuaid, Roisin F O'Neill, Kenneth Arthur, Victoria Bingham, Claire McGready, Anna T Gavin, Chris R Cardwell, Brian T Johnston, Jacqueline A James, Peter W Hamilton, Manuel Salto-Tellez, Liam J Murray
OBJECTIVES: The association between aspirin use and improved survival after colorectal cancer diagnosis may be more pronounced in tumors that have PIK3CA mutations or high PTGS2 expression. However, the evidence of a difference in association by biomarker status lacks consistency. In this population-based colon cancer cohort study the interaction between these biomarkers, aspirin use, and survival was assessed. METHODS: The cohort consisted of 740 stage II and III colon cancer patients diagnosed between 2004 and 2008...
April 27, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28448071/azathioprine-maintenance-therapy-to-prevent-relapses-in-autoimmune-pancreatitis
#10
Nicolò de Pretis, Antonio Amodio, Laura Bernardoni, Pietro Campagnola, Fabiana Capuano, Suresh T Chari, Stefano Crinò, Armando Gabbrielli, Arianna Massella, Mark Topazian, Luca Frulloni
OBJECTIVES: Steroids are used to induce remission in autoimmune pancreatitis (AIP). Low-dosage steroid therapy or immunosuppressant (IMs) has been proposed as maintenance therapy to prevent AIP relapse. Few and conflicting data have been published on the efficacy of azathioprine (AZA) in preventing AIP relapse. The aim of this study was to evaluate the indication and efficacy of AZA as maintenance therapy to prevent disease relapse in AIP. METHODS: Patients suffering from AIP diagnosed according to the ICDC in type 1, type 2, and not otherwise specified (NOS) were divided in those treated with AZA (AZA(+) group) as maintenance therapy and not treated with maintenance therapy (AZA(-) group)...
April 27, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28406494/laser-capture-microdissection-of-pancreatic-acinar-cells-to-identify-proteomic-alterations-in-a-murine-model-of-caerulein-induced-pancreatitis
#11
John P Shapiro, Hannah M Komar, Baris Hancioglu, Lianbo Yu, Ming Jin, Yuko Ogata, Phil A Hart, Zobeida Cruz-Monserrate, Gregory B Lesinski, Darwin L Conwell
OBJECTIVES: Chronic pancreatitis (CP) is characterized by inflammation and fibrosis of the pancreas, leading to pain, parenchymal damage, and loss of exocrine and endocrine function. There are currently no curative therapies; diagnosis remains difficult and aspects of pathogenesis remain unclear. Thus, there is a need to identify novel biomarkers to improve diagnosis and understand pathophysiology. We hypothesize that pancreatic acinar regions contain proteomic signatures relevant to disease processes, including secreted proteins that could be detected in biofluids...
April 13, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28406493/genetic-characterization-and-influence-on-inflammatory-bowel-disease-expression-in-a-diverse-hispanic-south-florida-cohort
#12
Oriana M Damas, Lissette Gomez, Maria A Quintero, Evadnie Rampersaud, Susan Slifer, Gary W Beecham, David H Kerman, Amar R Deshpande, Daniel A Sussman, Maria T Abreu, Jacob L McCauley
OBJECTIVES: Hispanics represent an understudied inflammatory bowel disease (IBD) population. Prior studies examining genetic predisposition to IBD in Hispanics are limited. In this study, we examined whether European-derived IBD variants confer risk in Hispanics and their influence on IBD phenotype in Hispanics compared to non-Hispanic whites (NHW). METHODS: Self-identified Hispanics and NHWs with IBD were included. Hispanic controls were included for our genetic analyses...
April 13, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28406492/time-lapse-to-colorectal-cancer-telomere-dynamics-define-the-malignant-potential-of-polyps
#13
Brooke R Druliner, Xiaoyang Ruan, Ruth Johnson, Diane Grill, Daniel O'Brien, Tsung-Po Lai, Shahrooz Rashtak, Donna Felmlee-Devine, Jill Washechek-Aletto, Andrei Malykh, Thomas Smyrk, Ann Oberg, Hongfang Liu, Jerry W Shay, David A Ahlquist, Lisa A Boardman
No abstract text is available yet for this article.
April 13, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28383567/endoscopy-guided-evaluation-of-duodenal-mucosal-permeability-in-functional-dyspepsia
#14
Hideaki Ishigami, Tomoaki Matsumura, Shingo Kasamatsu, Shinsaku Hamanaka, Takashi Taida, Kenichiro Okimoto, Keiko Saito, Shoko Minemura, Daisuke Maruoka, Tomoo Nakagawa, Tatsuro Katsuno, Mai Fujie, Makoto Arai
OBJECTIVES: The pathophysiology of functional dyspepsia (FD) is not fully understood. Impaired duodenal mucosal integrity characterized by increased mucosal permeability and/or low-grade inflammation was reported as potentially important etiologies. We aimed to determine the utility of a recently developed simple catheterization method to measure mucosal admittance (MA), the inverse of mucosal impedance, for evaluation of duodenal mucosal permeability in patients with FD. METHODS: We conducted two prospective studies...
April 6, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28383566/adventures-in-developing-an-app-for-covert-hepatic-encephalopathy
#15
Jasmohan S Bajaj
Patient-reported outcomes (PRO) are critical to understand the spectrum of disease in chronic conditions but are often ignored in clinical practice. Cirrhosis, one of the leading causes of morbidity, is associated with severely impaired PROs likely due to covert hepatic encephalopathy (CHE). The clinical relevance and logistic barriers to routine CHE testing led us to develop the "EncephalApp Stroop App", which is now being used to diagnose CHE. The Primer discusses this example which can potentially be applied to other diseases...
April 6, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28383565/diversity-of-precursor-lesions-for-pancreatic-cancer-the-genetics-and-biology-of-intraductal-papillary-mucinous-neoplasm
#16
Krushna C Patra, Nabeel Bardeesy, Yusuke Mizukami
Pancreatic ductal adenocarcinoma (PDA), one of the most lethal cancers worldwide, is associated with two main types of morphologically distinct precursors-pancreatic intraepithelial neoplasia (PanIN) and intraductal papillary mucinous neoplasm (IPMN). Although the progression of PanIN into invasive cancer has been well characterized, there remains an urgent need to understand the biology of IPMNs, which are larger radiographically detectable cystic tumors. IPMNs comprise a number of subtypes with heterogeneous histopathologic and clinical features...
April 6, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28383564/development-of-a-simple-noninvasive-model-to-predict-significant-fibrosis-in-patients-with-chronic-hepatitis-b-combination-of-ultrasound-elastography-serum-biomarkers-and-individual-characteristics
#17
Xin Chen, Huiying Wen, Xinyu Zhang, Changfeng Dong, Haoming Lin, Yanrong Guo, Lingbo Shan, Simin Yao, Min Yang, Xiaohua Le, Yingxia Liu
OBJECTIVES: The accurate assessment of liver fibrosis is clinically important in patients with chronic hepatitis B (CHB). Blood tests and elastography are now widely used for the noninvasive diagnosis of liver fibrosis in CHB patients. The aim of this study was to develop a new and more accurate predictive model, which combines elastography data, serum biomarkers, and individual characteristics, to discriminate between CHB patients with and without significant liver fibrosis. METHODS: Two noninvasive methods, specifically, an ultrasound elastography technique termed acoustic radiation force impulse imaging (ARFI) and a blood test, were used to assess a cohort of 345 patients (estimation group, 218 patients; validation group, 127 patients) with CHB...
April 6, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28300824/association-between-the-telomerase-rs2736098_tt-genotype-and-a-lower-risk-of-chronic-hepatitis-b-and-cirrhosis-in-chinese-males
#18
Guanghui Cheng, Xiaotian Yuan, Fang Wang, Qing Sun, Qian Xin, Kailin Li, Chao Sun, Zhaomin Lin, Yun Luan, Yiteng Xu, Ping Li, Feng Kong, Dawei Xu
OBJECTIVES: Chronic hepatitis B (CHB) is caused by infection of hepatitis B virus (HBV) and liver cirrhosis (LC) is its most common complication. The accumulated evidence indicates a genetic context of HBV infection phenotypes. Here we determine a potential association of CHB/LC with the genetic variant of telomerase reverse transcriptase (TERT), a key player in aging including immune-senescence. METHODS: The study included 227 Chinese CHB patients and 315 sex/age-matched healthy controls...
March 16, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28300823/stem-cell-therapy-for-inflammatory-bowel-disease
#19
Amy L Lightner
No abstract text is available yet for this article.
March 16, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28300822/human-%C3%AE-defensin-2-in-primary-sclerosing-cholangitis
#20
Cindy Chang, Ana Lleo, Anchasa Kananurak, Fabio Grizzi, Koichi Tsuneyama, Pietro Invernizzi, Charles L Bevins, Christopher L Bowlus
OBJECTIVES: Primary sclerosing cholangitis (PSC) is a chronic inflammatory disease of the bile ducts frequently associated with inflammatory bowel disease (IBD), suggesting an important role for the gut-liver axis. Defensins are small (3.5-4.5 kDa) anti-microbial peptides that contribute to innate immunity at mucosal surfaces and have been implicated in IBD. The aim of this study was to investigate copy number variation of the gene (DEFB4) encoding human β-defensin 2 (HBD2) and protein expression of HBD2 in PSC...
March 16, 2017: Clinical and Translational Gastroenterology
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