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Gastroenterology

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https://www.readbyqxmd.com/read/28927878/risk-of-metachronous-high-risk-adenomas-and-large-serrated-polyps-in-individuals-with-serrated-polyps-on-index-colonoscopy-data-from-the-new-hampshire-colonoscopy-registry
#1
Joseph C Anderson, Lynn F Butterly, Christina M Robinson, Julia E Weiss, Christopher Amos, Amitabh Srivastava
BACKGROUND & AIMS: Surveillance guidelines for serrated polyps (SPs) are based on limited data on longitudinal outcomes of patients. We used the New Hampshire Colonoscopy Registry to evaluate risk of clinically important metachronous lesions associated with SPs, detected during index colonoscopies. METHODS: We collected data from a population-based colonoscopy registry that has been collecting and analyzing data on colonoscopies across the state of New Hampshire since 2004, including rates of adenoma and serrated polyp detection...
September 16, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28923497/cholera-vaccine-use-is-associated-with-a-reduced-risk-of-death-in-patients-with-colorectal-cancer-a-population-based-study
#2
Jianguang Ji, Jan Sundquist, Kristina Sundquist
BACKGROUND & AIMS: Cholera toxin can act as a modulator of the immune response with anti-inflammatory effects; it reduces development of colon polyps in mouse models of colorectal cancer (CRC). We performed a population-based study to determine whether, in patients with a diagnosis of CRC, subsequent administration of the cholera vaccine (killed Vibrio cholerae O1 whole cells and recombinant cholera toxin B subunit) affects mortality. METHODS: We identified patients from the Swedish Cancer Register who were diagnosed with CRC from July 2005 through December 2012...
September 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28923496/deficiency-of-the-mitochondrial-nad-kinase-causes-stress-induced-hepatic-steatosis-in-mice
#3
Kezhong Zhang, Hyunbae Kim, Zhiyao Fu, Yining Qiu, Zhao Yang, Jiemei Wang, Deqiang Zhang, Xin Tong, Lei Yin, Jing Li, Jianmei Wu, Nathan R Qi, Sander M Houten, Ren Zhang
BACKGROUND & AIMS: The mitochondrial nicotinamide adenine dinucleotide (NAD) kinase (NADK2, also called MNADK) catalyzes phosphorylation of NAD to yield NADP. Little is known about the functions of mitochondrial NADP and MNADK in liver physiology and pathology. We investigated the effects of reduced mitochondrial NADP by deleting MNADK in mice. METHODS: We generated MNADK-knockout (KO) mice on a C57BL/6NTac background; mice with a wild-type Mnadk gene were used as controls...
September 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28923495/crispr-cas9-engineering-of-adult-mouse-liver-demonstrates-that-the-dnajb1-prkaca-gene-fusion-is-sufficient-to-induce-tumors-resembling-fibrolamellar-hepatocellular-carcinoma
#4
Lars H Engelholm, Anjum Riaz, Denise Serra, Frederik Dagnæs-Hansen, Jens V Johansen, Eric Santoni-Rugiu, Steen H Hansen, Francesco Niola, Morten Frödin
BACKGROUND & AIMS: Fibrolamellar hepatocellular carcinoma (FL-HCC) is a primary liver cancer that predominantly affects young adults with no underlying liver disease. A somatic, 400 Kb deletion on chromosome 19 that fuses part of the DnaJ heat shock protein family (Hsp40) member B1 gene (DNAJB1) to the protein kinase cAMP-activated catalytic subunit alpha gene (PRKACA) has been repeatedly identified in patients with FL-HCC. However, the DNAJB1-PRKACA gene fusion has not been shown to induce liver tumorigenesis...
September 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28918915/a-life-threatening-cause-of-colitis
#5
Tamika S Jaswani, Douglas J Grider, M Jonathan Bern
No abstract text is available yet for this article.
September 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28918914/analysis-of-genomes-and-transcriptomes-of-hepatocellular-carcinomas-identifies-mutations-and-gene-expression-changes-in-the-transforming-growth-factor-beta-pathway-short-title-prognostic-significance-of-tgf-%C3%AE-signature-in-liver-cancer
#6
Jian Chen, Sobia Zaidi, Shuyun Rao, Jiun-Sheng Chen, Liem Phan, Patrizia Farci, Xiaoping Su, Kirti Shetty, Jon White, Fausto Zamboni, Xifeng Wu, Asif Rashid, Nagarajan Pattabiraman, Raja Mazumder, Anelia Horvath, Ray-Chang Wu, Shulin Li, Cuiying Xiao, Chu-Xia Deng, David A Wheeler, Bibhuti Mishra, Rehan Akbani, Lopa Mishra
BACKGROUND & AIMS: Development of hepatocellular carcinoma (HCC) is associated with alterations in the transforming growth factor beta (TGFβ) signaling pathway, which regulates liver inflammation and can have tumor suppressor or promoter activities. Little is known about the roles of specific members of this pathway at specific of HCC development. We took an integrated approach to identify and validate the effects of changes in this pathway in HCC and identify therapeutic targets. METHODS: We performed transcriptome analyses for a total of 488 HCCs that include data from The Cancer Genome Atlas...
September 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28918191/development-and-validation-of-a-chronic-pancreatitis-prognosis-score-in-2-independent-cohorts
#7
Georg Beyer, Ujjwal M Mahajan, Christoph Budde, Thomas J Bulla, Thomas Kohlmann, Louise Kuhlmann, Kerstin Schütte, Ali A Aghdassi, Eckhard Weber, Ulrich Weiss, Asbjørn M Drewes, Søren S Olesen, Markus M Lerch, Julia Mayerle
BACKGROUND & AIMS: The clinical course of chronic pancreatitis is unpredictable. There is no model to assess disease severity or progression or predict patient outcomes. METHODS: We performed a prospective study of 91 patients with chronic pancreatitis; data were collected from patients seen at academic centers in Europe, from January 2011 through April 2014. We analyzed correlations between clinical, laboratory, and imaging data with number of hospital readmissions and in-hospital days over the next 12 months; the parameters with the highest degree of correlation were to develop 3-stage chronic pancreatitis prognosis score (COPPS)...
September 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28918190/autophagy-inflammation-and-immune-dysfunction-in-the-pathogenesis-of-pancreatitis
#8
REVIEW
Anna S Gukovskaya, Ilya Gukovsky, Hana Algül, Aida Habtezion
Pancreatitis is a common disorder with significant morbidity and mortality, yet little is known about its pathogenesis and there is no specific or effective treatment. Its development involves dysregulated autophagy and unresolved inflammation, demonstrated by studies in genetic and experimental mouse models. Disease severity depends on whether the inflammatory response resolves or amplifies, leading to multi-organ failure. Dysregulated autophagy might promote the inflammatory response in the pancreas. We discuss the roles of autophagy and inflammation in pancreatitis, mechanisms of deregulation, and connections among disordered pathways...
September 13, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28912020/intestinal-dysbiosis-featuring-abundance-of-ruminococcus-gnavus-associates-with-allergic-diseases-in-infants
#9
Huey-Huey Chua, Hung-Chieh Chou, Ya-Ling Tung, Bor-Luen Chiang, Chien-Chia Liao, Hong-Hsing Liu, Yen-Hsuan Ni
BACKGROUND & AIMS: Dysbiosis of the intestinal microbiota has been associated with development of allergies in infants. However, it is not clear what microbes might contribute to this process. We investigated what microbe(s) might be involved in analyses of infant twins and mice. METHODS: We studied fecal specimens prospectively in a twin cohort (n=30) and age-matched singletons (n=14) born at National Taiwan University Children's Hospital, Taipei, Taiwan, from April 2011 to March 2013...
September 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28912019/a-nigro-vagal-pathway-controls-gastric-motility-and-is-affected-in-a-rat-model-of-parkinsonism
#10
Laura Anselmi, Luca Toti, Cecilia Bove, Jessica Hampton, R Alberto Travagli
BACKGROUND & AIMS: In most patients with Parkinson's disease, gastrointestinal (GI) dysfunctions, such as gastroparesis and constipation, are prodromal to the cardinal motor symptoms of the disease. Sporadic Parkinson's disease has been proposed to develop following ingestion of neurotoxicants that affect the brain-gut axis via the vagus nerve, and then travel to higher centers compromising the substantia nigra pars compacta (SNpc), and, later, the cerebral cortex. We aimed to identify the pathway that connects the brainstem vagal nuclei and the SNpc, and to determine whether this pathway is compromised in a rat model of Parkinsonism...
September 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28912018/association-between-germline-mutations-in-brf1-a-subunit-of-the-rna-polymerase-iii-transcription-complex-and-hereditary-colorectal-cancer
#11
Fernando Bellido, Nadine Sowada, Pilar Mur, Conxi Lázaro, Tirso Pons, Rafael Valdés-Mas, Marta Pineda, Gemma Aiza, Silvia Iglesias, José Luís Soto, Miguel Urioste, Trinidad Caldés, Milagros Balbín, Pilar Blay, Daniel Rueda, Mercedes Durán, Alfonso Valencia, Victor Moreno, Joan Brunet, Ignacio Blanco, Matilde Navarro, George A Calin, Guntram Borck, Xose S Puente, Gabriel Capellá, Laura Valle
BACKGROUND & AIMS: Although there is a genetic predisposition to colorectal cancer (CRC), few of the genes that affect risk have been identified. We performed whole-exome sequence analysis of individuals in a high-risk family without mutations in genes previously associated with CRC risk to identify variants associated with inherited CRC. METHODS: We collected blood samples from 3 relatives with CRC in Spain (65, 62 and 40 years old at diagnosis) and perfomed whole-exome sequence analyses...
September 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28912017/indoleamine-2-3-dioxygenase-1-increased-in-human-gastric-pre-neoplasia-promotes-inflammation-and-metaplasia-in-mice-and-is-associated-with-type-ii-hypersensitivity-autoimmunity
#12
Mohamad El-Zaatari, Adam J Bass, Reanne Bowlby, Min Zhang, Li-Jyun Syu, Yitian Yang, Helmut Grasberger, Andrew Shreiner, Bei Tan, Shrinivas Bishu, Wai K Leung, Andrea Todisco, Nobuhiko Kamada, Marilia Cascalho, Andrzej A Dlugosz, John Y Kao
BACKGROUND & AIMS: Chronic gastrointestinal inflammation increases the risk of cancer by mechanisms that are not well understood. Indoleamine-2,3-dioxygenase 1 (IDO1) is a heme-binding enzyme that regulates the immune response via catabolization and regulation of tryptophan availability for immune cell uptake. IDO1 expression is increased during the transition from chronic inflammation to gastric metaplasia. We investigated whether IDO1 contributes to the inflammatory response that mediates loss of parietal cells leading to metaplasia...
September 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28899721/clinical-challenges-and-images-in-gastroenterology-endoscopic-resection-of-esophageal-mucosal-bridge
#13
Abhilash Perisetti, Debdeep Banerjee, Benjamin Tharian
No abstract text is available yet for this article.
September 9, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28899720/a-59-year-old-man-with-new-jaundice
#14
Mohamad A Mouchli, Paul J Kurtin, Nicholas F LaRusso
No abstract text is available yet for this article.
September 9, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28899719/hepatic-masses-in-a-patient-in-inflammatory-bowel-disease
#15
Varun Kesar, Arun Swaminath
No abstract text is available yet for this article.
September 9, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28888868/acute-right-upper-quadrant-abdominal-pain
#16
Young Joo Yang, Jae Young Park, Chang Seok Bang
No abstract text is available yet for this article.
September 6, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28886346/in-memoriam-lawrence-lumeng-md-researcher-clinician-leader-mentor-family-man-and-friend
#17
EDITORIAL
Naga P Chalasani, David W Crabb, Douglas K Rex
No abstract text is available yet for this article.
September 5, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28881196/a-severe-but-easily-treatable-dysphagia
#18
Julien Rohmer, Romain Paule, Benjamin Terrier
No abstract text is available yet for this article.
September 4, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28881195/detectable-viremia-at-the-end%C3%A2-of-treatment-with-direct-acting-antivirals-can-be-associated-with-subsequent-clinical-cure-in-patients-with%C3%A2-chronic-hepatitis-c-a%C3%A2-case-series
#19
LETTER
Lindsey M Childs-Kean, Joseph Hong
No abstract text is available yet for this article.
September 4, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28881194/an-unexpected-cause-of-acute-abdomen
#20
Benjamin Zucker, George Malietzis, Christos Kontovounisios
No abstract text is available yet for this article.
September 4, 2017: Gastroenterology
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