Distribution of Body Fat and Its Influence on Esophageal Inflammation and Dysplasia in Patients With Barrett's Esophagus

Eric M. Nelsen, Yujiro Kirihara, Naoki Takahashi, Qian Shi, Jason T. Lewis, Vikneswaran Namasivayam, Navtej S. Buttar, Kelly T. Dunagan, Ganapathy A. Prasad

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Background & Aims: Increased waist circumference and visceral fat are associated with increased risk of Barrett's esophagus (BE) and esophageal adenocarcinoma. This association might be mediated by mechanical and endocrine mechanisms. We investigated the distribution of fat in subjects with BE and its association with esophageal inflammation and dysplasia. Methods: We collected data from 50 BE cases and 50 controls (matched for age and sex, identified from a radiology trauma database) seen at the Mayo Clinic in 2009. Abdominal (subcutaneous and visceral) and gastroesophageal junction (GEJ) fat area was measured using computed tomography with standard techniques. Esophageal inflammation (based on a histologic score) and dysplasia grade were assessed from esophageal biopsies of BE cases by a gastrointestinal pathologist. Conditional logistic regression was used to assess the association of body fat depot area with BE status, esophageal inflammation, and dysplasia. Results: All BE subjects had controlled reflux symptoms without esophagitis, based on endoscopy. The GEJ fat area (odds ratio [OR], 6.0; 95% confidence interval [CI], 1.3-27.7; P = .02), visceral fat area (OR, 4.9; 95% CI, 1.0-22.8; P = .04), and abdominal circumference (OR, 9.1; 95% CI, 1.4-57.2; P = 0.02) were associated with BE, independent of body mass index (BMI). The subcutaneous fat area was not associated with BE. Visceral and GEJ fat were significantly greater in BE subjects with esophageal inflammation (compared with those without, P = .02) and high-grade dysplasia (compared with those without, P = .01), independent of BMI. Conclusions: GEJ and visceral fat are associated with BE, and with increased esophageal inflammation and high-grade dysplasia in BE subjects, independent of BMI. Visceral fat therefore might promote esophageal metaplasia and dysplasia.

Original languageEnglish (US)
Pages (from-to)728-734
Number of pages7
JournalClinical Gastroenterology and Hepatology
Volume10
Issue number7
DOIs
StatePublished - Jul 2012

Keywords

  • CT imaging
  • Esophageal carcinoma
  • Obesity
  • Risk factor

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology

Fingerprint Dive into the research topics of 'Distribution of Body Fat and Its Influence on Esophageal Inflammation and Dysplasia in Patients With Barrett's Esophagus'. Together they form a unique fingerprint.

Cite this