• REVIEW: Combining CRISPR-Cas9 and Organoid Technologies to Study Gastrointestinal Diseases

REVIEW: Combining CRISPR-Cas9 and Organoid Technologies to Study Gastrointestinal Diseases

CRISPR-Cas9 technology can be used to engineer organoids for studies of gastrointestinal development and disease pathogenesis. In the February issue of Gastroenterology, Masayuki Fujii et al review derivation of organoids from human gastrointestinal tissues and how CRISPR-Cas9 has advanced studies of the digestive system. CRISPR-Cas9 genome editing technology allows researchers to

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  • REVIEW: Balancing Benefit vs Risk of Immunosuppressive Therapy for IBD

REVIEW: Balancing Benefit vs Risk of Immunosuppressive Therapy for IBD

Inflammatory bowel diseases (IBD) and their treatments, particularly immunosuppressive drugs, increase risk of infections and cancers. However, by promoting mucosal healing, these agents reduce risks of infections related to intestinal lesions, malnutrition, intravenous devices, and IBD surgeries and reduce risk of cancers associated with chronic mucosal inflammation. Laurent Beaugerie and Julien Kirchgesner

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  • Can an Antibody Against IL13 Be Used to Treat Eosinophilic Esophagitis?

Can an Antibody Against IL13 Be Used to Treat Eosinophilic Esophagitis?

A monoclonal antibody against IL13 reduced histologic and endoscopic features of eosinophilic esophagitis (EoE) in a placebo-controlled phase 2 trial, researchers report in the February issue of Gastroenterology. The antibody, called RPC4046, was well tolerated. EoE is a chronic, immune-mediated disease of the esophagus characterized by eosinophil-mediated mucosal inflammation and

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  • What are the Long-term Effects of DAA Therapy on HCV-associated Cryoglobulinemia Vasculitis?

What are the Long-term Effects of DAA Therapy on HCV-associated Cryoglobulinemia Vasculitis?

More than 95% of patients with hepatitis C virus–associated cryoglobulinemia vasculitis (HCV-CryoVas) have a full or partial response of symptoms to treatment with direct-acting antiviral (DAA) agents, researchers report in a long-term follow-up study in the February issue of Clinical Gastroenterology and Hepatology. Fewer than 5% of patients stopped therapy

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  • Combined Genetic and Clinical Data Do Not Improve Determination of Risk for Esophageal Adenocarcinoma

Combined Genetic and Clinical Data Do Not Improve Determination of Risk for Esophageal Adenocarcinoma

Addition of genetic information to clinical factors does not increase identification of individuals at risk for esophageal adenocarcinoma, researchers report in the January 2019 issue of Gastroenterology. New screening and risk evaluation methods are needed to improve early detection of esophageal adenocarcinoma, because most patients receive a diagnosis at a late

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Is Endoscopic Submucosal Dissection the Best Treatment for Esophageal Cancer?

Lower proportions of patients with T1am2/m3 or T1b early-stage esophageal squamous cell carcinomas (EESCCs) treated with endoscopic submucosal dissection (ESD) have perioperative adverse events or disease-specific death after a median follow-up time of 21 months, researchers report in the January issue of Clinical Gastroenterology and Hepatology. The authors found no difference

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  • Simple Process for Generating Unlimited Intestinal Stem Cells From Endoscopic Biopsies

Simple Process for Generating Unlimited Intestinal Stem Cells From Endoscopic Biopsies

An efficient method for cloning gastrointestinal stem cells from biopsies collected during endoscopy is reported in the January isssue of Gastroenterology. A system is needed to isolate, clone, and examine the mucosal stem cells away from confounding effects of immune, stromal, and microbe cells. Markers of stem cells such as

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Review: Why Do We Know So Little About Hemorrhoids?

The time has come for targeted research to understand the causes, symptoms, and best treatment for patients with symptomatic hemorrhoids, write Robert S. Sandler and Anne F. Peery in a review article in the January issue of Clinical Gastroenterology and Hepatology. Although hemorrhoids are responsible for considerable economic cost and

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  • How Can You Identify a Patient With Idiopathic Myointimal Hyperplasia of the Mesenteric Veins?

How Can You Identify a Patient With Idiopathic Myointimal Hyperplasia of the Mesenteric Veins?

Researchers report a case of vascular alterations with inflammation and evidence of venous outflow tract due to idiopathic myointimal hyperplasia of the mesenteric veins (IMHMV) in the January issue of Gastroenterology. Michiel Bronswijk et al describe a 67-year-old man with a history of obesity, type 2 diabetes, and hemochromatosis admitted to

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  • What Are the Effects of Virologic Response to Treatment on Outcomes of Patients With Chronic HBV Infection and Decompensated Cirrhosis?

What Are the Effects of Virologic Response to Treatment on Outcomes of Patients With Chronic HBV Infection and Decompensated Cirrhosis?

Maintained virologic response to entecavir or lamivudine associates with short- and long-term transplant-free survival of patients with hepatitis B virus (HBV)-related decompensated cirrhosis, researchers report in the December issue of Clinical Gastroenterology and Hepatology. The benefits are maintained for up to 10 years, but patients are still at risk for

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Identification of Human Monoclonal Antibodies That Neutralize Pandemic GII.4 Noroviruses

Human monoclonal antibodies able to neutralize live human norovirus GII.4 Sydney 2012—the predominant strain responsible for recent outbreaks—are reported in the December issue of Gastroenterology. Researchers analyzed these antibodies and identified the neutralizing epitopes, providing insight into the human immune response to this deadly virus. Human noroviruses are the major

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  • What is the Best Treatment Option for Fistulizing Crohn’s Disease?

What is the Best Treatment Option for Fistulizing Crohn’s Disease?

Tumor necrosis factor (TNF) antagonists are effective for induction and maintenance of perianal fistula response and remission in patients with Crohn’s disease (CD), a systematic review and meta-analysis shows in the December issue of Clinical Gastoenterology and Hepatology. However, there are few data on the effects on internal fistulae, and further studies

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  • Has MELD-Na Improved Outcomes of Patients on the Liver Transplant Waitlist?

Has MELD-Na Improved Outcomes of Patients on the Liver Transplant Waitlist?

Liver allocation based on model for end-stage liver disease-sodium (MELD-Na) score improved waitlist outcomes and provided significant benefit to patients with hyponatremia, researchers report in the November issue of Gastroenterology. However, there are discrepancies in transplantation survival benefit, so current rules for liver allocation might require revision, the authors state. The

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  • Hazards of Very Hot Coffee

Hazards of Very Hot Coffee

Persistent drinking of very hot coffee can cause exfoliative esophagitis due to thermal injury, researchers report in the November issue of Clinical Gastroenterology and Hepatology. Florian Schertl et al describe the case of a 55-year-old woman with new retrosternal pain upon swallowing. She had been receiving continuous and successful proton pump inhibitor

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