Track topics on Twitter Track topics that are important to you
Patients with Barrett's Esophagus are known to have excessive distal esophageal acid exposure comparable to patients with erosive esophagitis. A significant proportion of patients with BE who are not symptomatic on treatment continue to have persistent acid reflux. High dose esomeprazole is able to control acid reflux in patients with BE. The effect of acid reflux on Barrett's esophagus stroma is currently unknown.
It is our hypothesis that stromal fibroblast activation in Barrett's esophagus is influenced by acid reflux. The specific aim of this proposal will be: To assess the association between acid reflux and subepithelial fibroblasts in Barrett's esophagus.
We will conduct a prospective cohort study to assess the degree of stromal activation in patients with LSBE (without dysplasia) who have adequate and inadequate control of acid reflux in the distal esophagus. The study will be conducted in two phases.
Phase 1 (Pilot): 20 patients with LSBE without dysplasia will undergo endoscopy with biopsies and a 24 hour pH study on treatment. Patients will then be divided into 2 groups:
- Group A (GER): Those with ongoing acid reflux (characterized by either presence of esophagitis [LA classification B,C or D1] on endoscopy, and/or a positive pH study on treatment defined using standard criteria)
- Group B (NGER): Those with controlled acid reflux (negative endoscopy and pH study on treatment).
Stromal markers that will be assessed and compared between the 2 groups will include: presence of activated myofibroblasts (detected by immunohistochemistry for vimentin and smooth muscle actin).
Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic
Endoscopy and pH study
Published on BioPortfolio: 2014-07-24T14:19:37-0400
Radiofrequency ablation (RFA) is a mainstay of treatment for patients who have Barrett's esophagus (BE) with dysplasia. For unclear reasons, Barrett's esophagus recurs after successful RFA...
This study evaluates the diagnostic accuracy, safety and acceptability of transnasal endoscopy (TNE) for a diagnosis of Barrett's esophagus (BE). This is a cross-over randomised trial, whe...
Barrett's esophagus (BE) is a condition that often occurs in patients who have had GERD for a long time. The researchers are interested in BE because it can sometimes become a cancer in t...
RATIONALE: Screening tests may help doctors find cancer cells early and plan better treatment. It is not yet known whether endoscopy every 2 years is more effective than endoscopy only as ...
The hypothesis is that the addition of a transparent cap to the end of the endoscope will increase the detection and diagnostic yield of visible lesions in Barrett's esophagus. Thus, the g...
Data on time trends of dysplasia and esophageal adenocarcinoma (EAC) in Barrett's esophagus (BE) during the index endoscopy (ie, prevalent cases) are limited. Our aim was to determine the prevalence p...
Endoscopic features of early neoplasia in Barrett's esophagus (BE) are subtle. Blue-light imaging (BLI) may improve visualization of neoplastic lesions. The aim of this study was to evaluate BLI in vi...
Barrett's esophagus (BE) is a known precursor for development of esophageal adenocarcinoma and surveillance of affected patients is necessary when cancer progression risk is considered to be high. How...
Dysplastic Barrett's esophagus (BE) lesions ≤2 cm in size can be targeted for en-bloc endoscopic mucosal resection (EMR). White-light endoscopy can underestimate the size of a lesion, limiting compl...
Screening for Barrett's esophagus (BE) with conventional esophagogastroduodenoscopy (C-EGD) is expensive. We assessed the performance of a clinic-based, single use transnasal capsule endoscope (EG Sca...
A condition with damage to the lining of the lower ESOPHAGUS resulting from chronic acid reflux (ESOPHAGITIS, REFLUX). Through the process of metaplasia, the squamous cells are replaced by a columnar epithelium with cells resembling those of the INTESTINE or the salmon-pink mucosa of the STOMACH. Barrett's columnar epithelium is a marker for severe reflux and precursor to ADENOCARCINOMA of the esophagus.
Procedures of applying ENDOSCOPES for disease diagnosis and treatment. Endoscopy involves passing an optical instrument along either natural body pathways such as the digestive tract, or through keyhole incisions to examine the interior parts of the body. With advances in imaging, endoscope, and miniaturization of endosurgical equipment, surgery can be performed during endoscopy.
A motility disorder of the ESOPHAGUS in which the LOWER ESOPHAGEAL SPHINCTER (near the CARDIA) fails to relax resulting in functional obstruction of the esophagus, and DYSPHAGIA. Achalasia is characterized by a grossly contorted and dilated esophagus (megaesophagus).
Visualization of the heart structure and cardiac blood flow for diagnostic evaluation or to guide cardiac procedures via techniques including ENDOSCOPY (cardiac endoscopy, sometimes refered to as cardioscopy), RADIONUCLIDE IMAGING; MAGNETIC RESONANCE IMAGING; TOMOGRAPHY; or ULTRASONOGRAPHY.
A subspecialty of internal medicine concerned with the study of the physiology and diseases of the digestive system and related structures (esophagus, liver, gallbladder, and pancreas).
Astroesophageal Reflux Disease (GERD) Barrett's Esophagus Celiac Disease Cholesterol Crohn's Disease Gastroenterology Hepatitis Hepatology Irritable Bowel Syndrome (IBS) Pancreatitis Peptic Ulcer Disease...
Barrett’s esophagus is a condition in which the tissue lining the esophagus—the muscular tube that carries food and liquids from the mouth to the stomach—is replaced by tissue that is similar to the intestinal lining. This process is ca...
Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...