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Content

Low-dose gluten challenge in celiac sprue: malabsorptive and antibody responses.

Description

Pyle GG, Paaso B, Anderson BE, Allen D, Marti T, Khosla C, Gray GM., Clin Gastroenterol Hepatol. 3(7):679-86., 2005 Jul 01

Investigators

Gail G. Pyle, M.D.

Abstract

BACKGROUND & AIMS: Undiagnosed patients with symptoms of celiac sprue often present to physicians after establishing dietary gluten exclusion. Although they must resume a gluten-containing diet for evaluation, there are no guidelines regarding duration of the gluten challenge, gluten dose, or monitoring parameters. We investigated the effects of a short-term gluten challenge in asymptomatic treated adult celiac patients on intestinal absorption and celiac antibody tests.

METHODS: Eight adult asymptomatic celiac patients consumed either 5 or 10 g of partially hydrolyzed gluten per day in an orange juice mixture for 21 days while maintaining their usual gluten-free diet. A symptom questionnaire, serum antibodies (antigliadin immunoglobulin [Ig]A and antitransglutaminase IgA and IgG), D-xylose urine excretion test, and 72-hour quantitative fecal fat test were monitored.

RESULTS: Two patients (25%) had at least 1 abnormal celiac antibody test at baseline. There was no increase in antibodies during gluten exposure compared with baseline for any of the patients (P > .05). At baseline, 1 patient had abnormal urine xylose excretion, and 3 patients had abnormal fecal fat values. At day 15 of gluten challenge, all patients had reduced xylose absorption compared with baseline (P = .0019), and 5 of 8 participants (63%) reduced their xylose excretion to the abnormal range. Seven of 8 patients (88%) had increased fecal fat excretion at day 15 (P = .026), and 6 of these (75%) had steatorrhea by day 15.

CONCLUSIONS: Short-term gluten challenge in asymptomatic adult celiac patients produces carbohydrate and fat malabsorption but does not increase transglutaminase and antigliadin antibody titers.

Pubmed Abstract

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Associated Topics

  • Digestive Disorders
  • Disease Management
  • Food and Nutrition

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