25 results match your criteria: "Gastroenterology"

Diverticulosis is defined as the presence of diverticula in the intestinal tract. While asymptomatic in most cases, severe complications can arise. The precise etiology of diverticulosis is still being investigated, but its correlation to dietary exposures has been proven.

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Diet and Risk for Incident Diverticulitis in Women : A Prospective Cohort Study.

Ann Intern Med

June 2025

Center for Gastrointestinal Biology and Disease, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina (T.B., C.A., A.C.S., R.S.S., A.F.P.).

Article Synopsis
  • The study investigates the link between diet and diverticulitis risk in women, focusing on nuts and seeds consumption.
  • Despite common beliefs, the research finds that intake of peanuts, nuts, and seeds doesn't increase diverticulitis risk.
  • Women following healthier diets showed a reduced risk of developing diverticulitis compared to those with less healthy eating habits.
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Therapeutic Targeting of Oncogene-Induced Transcription-Replication Conflicts in Pancreatic Ductal Adenocarcinoma.

Gastroenterology

September 2025

Department of Surgery, City of Hope Cancer Center, Duarte, California; Department of Cancer Genetics and Epigenetics, City of Hope Cancer Center, Duarte, California. Electronic address:

Background & Aims: Transcription-replication conflicts (TRCs) are a key source of replication stress in cancer, with pancreatic ductal adenocarcinoma (PDAC) showing uniquely high levels. This study investigated the mechanism, oncogene dependency, subtype specificity, and preclinical activity of the TRC-targeting molecule AOH1996 in PDAC models. Initial clinical evidence of AOH1996 activity in patients with PDAC is also provided.

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Introduction: The Leuven Consensus provides a classification scheme for the diagnosis of pharyngeal and upper esophageal sphincter (UES) motor disorders using metrics derived from pharyngeal high-resolution manometry-impedance (P-HRM-I).

Methods: Twenty-six experts with broad multidisciplinary backgrounds contributed their knowledge and experience to this initiative via a formal deliberative Delphi process. Guidance on a swallow assessment protocol as well as diagnostic criteria for UES dysfunction and pharyngeal contractile dysfunction is provided.

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Background: Pancreatic ductal adenocarcinoma (PDAC) is a highly lethal cancer with a 5-year survival rate of 12%. It has two major molecular subtypes: classical and basal, regulated by the master transcription factors (MTFs) GATA6 and ΔNp63, respectively.

Objective: This study sought to uncover the transcriptional regulatory mechanisms controlling PDAC subtype identity.

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Objective: Epigenetic mechanisms, including DNA methylation (DNAm), have been proposed to play a key role in Crohn's disease (CD) pathogenesis. However, the specific cell types and pathways affected as well as their potential impact on disease phenotype and outcome remain unknown. We set out to investigate the role of intestinal epithelial DNAm in CD pathogenesis.

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Article Synopsis
  • A study was conducted to estimate the incidence, prevalence, and racial-ethnic distribution of inflammatory bowel disease (IBD) in the U.S. using various health insurance data sets.
  • The incidence of IBD was found to be 10.9 cases per 100,000 person-years, peaking in individuals in their 20s and then stabilizing in later decades.
  • The study estimates that around 2.39 million Americans have IBD, with varying prevalence rates across racial and ethnic groups, being higher in White Americans compared to Black, Asian, and Hispanic populations.
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Association of Proton Pump Inhibitor Use With Incident Dementia and Cognitive Decline in Older Adults: A Prospective Cohort Study.

Gastroenterology

September 2023

Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts; Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Electronic address:

Background & Aims: Prior studies have suggested that proton pump inhibitor (PPI) use is associated with increased risk of dementia; however, these have been limited by incomplete assessment of medication use and failure to account for confounders. Furthermore, prior studies have relied on claims-based diagnoses for dementia, which can lead to misclassification. We investigated the associations of PPI and histamine-2 receptor antagonist (H2RA) use with dementia and cognitive decline.

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Infection is formally recognised as an infectious disease, an entity that is now included in the International Classification of Diseases 11th Revision. This in principle leads to the recommendation that all infected patients should receive treatment. In the context of the wide clinical spectrum associated with gastritis, specific issues persist and require regular updates for optimised management.

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Carrageenan (CGN) is a high molecular weight polysaccharide extracted from red seaweeds, composed of D-galactose residues linked in β-1,4 and α-1,3 galactose-galactose bond, widely used as a food additive in processed foods for its properties as a thickener, gelling agent, emulsifier, and stabilizer. In recent years, with the spread of the Western diet (WD), its consumption has increased. Nonetheless, there is a debate on its safety.

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Food-grade carrageenans and their implications in health and disease.

Compr Rev Food Sci Food Saf

July 2021

USDA-ARS Animal Genomics and Improvement Laboratory, Beltsville, Maryland, USA.

Food additives, often used to guarantee the texture, shelf-life, taste, and appearance of processed foods, have gained widespread attention due to their increased link to the growing incidence of chronic diseases. As one of the most common additives, carrageenans have been used in human diets for hundreds of years. While classified as generally recognized as safe (GRAS) for human consumption, numerous studies since the 1980s have suggested that carrageenans, particularly those with random coil conformations, may have adverse effects on gastrointestinal health, including aggravating intestinal inflammation.

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Objective: To investigate the incidence of gastric cancer (GC) attributed to gastric intestinal metaplasia (IM), and validate the Operative Link on Gastric Intestinal Metaplasia (OLGIM) for targeted endoscopic surveillance in regions with low-intermediate incidence of GC.

Methods: A prospective, longitudinal and multicentre study was carried out in Singapore. The study participants comprised 2980 patients undergoing screening gastroscopy with standardised gastric mucosal sampling, from January 2004 and December 2010, with scheduled surveillance endoscopies at year 3 and 5.

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ACG Clinical Guideline: Upper Gastrointestinal and Ulcer Bleeding.

Am J Gastroenterol

May 2021

Division of Gastroenterology and Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario, Canada.

We performed systematic reviews addressing predefined clinical questions to develop recommendations with the GRADE approach regarding management of patients with overt upper gastrointestinal bleeding. We suggest risk assessment in the emergency department to identify very-low-risk patients (e.g.

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Colonic diverticulitis is a painful gastrointestinal disease that recurs unpredictably and can lead to chronic gastrointestinal symptoms. Gastroenterologists commonly care for patients with this disease. The purpose of this Clinical Practice Update is to provide practical and evidence-based advice for management of diverticulitis.

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Objective: Endoscopic mucosal biopsies of primary gastric cancers (GCs) are used to guide diagnosis, biomarker testing and treatment. Spatial intratumoural heterogeneity (ITH) may influence biopsy-derived information. We aimed to study ITH of primary GCs and matched lymph node metastasis (LN).

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Dietary Emulsifiers Directly Impact Adherent-Invasive E. coli Gene Expression to Drive Chronic Intestinal Inflammation.

Cell Rep

October 2020

Institute for Biomedical Sciences, Center for Inflammation, Immunity and Infection, Digestive Disease Research Group, Georgia State University, Atlanta, GA, USA; INSERM U1016, team "Mucosal microbiota in chronic inflammatory diseases", CNRS UMR 8104, Université de Paris, Paris, France; Neuroscience

Dietary emulsifiers carboxymethylcellulose (CMC) and polysorbate-80 (P80) disturb gut microbiota, promoting chronic inflammation. Mice with minimal microbiota are protected against emulsifiers' effects, leading us to hypothesize that these compounds might provoke select pathobionts to promote inflammation. Gnotobiotic wild-type (WT) and interleukin-10 (IL-10) mice were colonized with Crohn's-disease-associated adherent-invasive E.

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Background And Aims: Besides well-defined genetic alterations, the dedifferentiation of mature acinar cells is an important prerequisite for pancreatic carcinogenesis. Acinar-specific genes controlling cell homeostasis are extensively downregulated during cancer development; however, the underlying mechanisms are poorly understood. Now, we devised a novel in vitro strategy to determine genome-wide dynamics in the epigenetic landscape in pancreatic carcinogenesis.

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Objective: Loss of the Crohn's disease predisposing gene results in an intestinal microenvironment conducive for colonisation by attaching-and-effacing enteropathogens. However, it remains elusive whether it relies on the intracellular recruitment of the serine-threonine kinase RIPK2 by NOD2, a step that is required for its activation of the transcription factor NF-κB.

Design: Colonisation resistance was evaluated in wild type and mutant mice, as well as in ex-germ-free (ex-GF) mice which were colonised either with faeces from -deficient mice or with bacteria with similar preferences for carbohydrates to those acquired by the pathogen.

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Objectives: -mutated hepatocellular carcinomas (HCCs) constitute a major part of human HCC and are largely inaccessible to target therapy. Yet, little is known about the metabolic reprogramming induced by β-catenin oncogenic activation in the liver. We aimed to decipher such reprogramming and assess whether it may represent a new avenue for targeted therapy of -mutated HCC.

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Objective: The intestinal microbiota plays a central role in the development of many chronic inflammatory diseases including IBD and metabolic syndrome. Administration of substances that alter microbiota composition, including the synthetic dietary emulsifiers polysorbate 80 (P80) and carboxymethylcellulose (CMC), can promote such inflammatory disorders. However, that inflammation itself impacts microbiota composition has obfuscated defining the extent to which these compounds or other substances act directly upon the microbiota versus acting on host parameters that promote inflammation, which subsequently reshapes the microbiota.

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Triple therapy versus sequential therapy for the first-line Helicobacter pylori eradication.

BMC Gastroenterol

January 2017

Department of Internal Medicine, Ewha Womans University School of Medicine, Ewha Medical Research Institute, 1071 Anyangcheon-ro, Yangcheon-gu, Seoul, 158-710, South Korea.

Background: The eradication rate of Helicobacter pylori (H. pylori) with triple therapy which was considered as standard first-line treatment has decreased to 70-85%. The aim of this study is to compare 7-day triple therapy versus 10-day sequential therapy as the first line treatment.

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Clinical significance of SNORA42 as an oncogene and a prognostic biomarker in colorectal cancer.

Gut

January 2017

Center for Gastrointestinal Cancer Research; Center for Epigenetics, Cancer Prevention and Cancer Genomics, Baylor Research Institute and Charles A. Sammons Cancer Center, Baylor University Medical Center, Dallas, Texas, USA.

Purpose: Despite recent advances in colorectal cancer (CRC) treatment, the prognosis of patients suffering from this malignancy still remains substandard, and metastatic recurrence following curative surgery is the leading cause of mortality. Therefore, it is imperative to identify prognostic markers to predict the clinical outcome of CRC patients. Recent evidence revealed the new role of small nucleolar RNAs (snoRNAs) in oncogenesis.

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Colorectal cancer (CRC) ranks third among the most commonly diagnosed cancers worldwide, with wide geographical variation in incidence and mortality across the world. Despite proof that screening can decrease CRC incidence and mortality, CRC screening is only offered to a small proportion of the target population worldwide. Throughout the world there are widespread differences in CRC screening implementation status and strategy.

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Stress-related mucosal disease in the critically ill patient.

Nat Rev Gastroenterol Hepatol

February 2015

Gastroenterology Department, McGill University Health Centre, Montreal General Hospital Site, Room D7-346, 1650 Cedar Avenue, Montréal, QC H3G 1A4, Canada.

Bleeding from stress-related mucosal disease in critically ill patients remains an important clinical management issue. Although only a small proportion (1-6%) of patients admitted to an intensive care unit (ICU) will bleed, a substantial proportion exhibit clinical risk factors (mechanical ventilation for >48 h and a coagulopathy) that predict an increased risk of bleeding. Furthermore, upper gastrointestinal mucosal lesions can be found in 75-100% of patients in ICUs.

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Context: Patients with diverticular disease are frequently advised to avoid eating nuts, corn, popcorn, and seeds to reduce the risk of complications. However, there is little evidence to support this recommendation.

Objective: To determine whether nut, corn, or popcorn consumption is associated with diverticulitis and diverticular bleeding.

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