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Abstract Title:

Folic acid supplementation inhibits recurrence of colorectal adenomas: a randomized chemoprevention trial.

Abstract Source:

World J Gastroenterol. 2008 Jul 28;14(28):4492-8. PMID: 18680228

Abstract Author(s):

Richard Jaszewski, Sabeena Misra, Martin Tobi, Nadeem Ullah, Jo Ann Naumoff, Omer Kucuk, Edi Levi, Bradley N Axelrod, Bhaumik B Patel, Adhip P N Majumdar

Abstract:

AIM: To determine whether folic acid supplementation will reduce the recurrence of colorectal adenomas, the precursors of colorectal cancer, we performed a double-blind placebo-controlled trial in patients with adenomatous polyps. METHODS: In the current double-blind, placebo-controlled trial at this VA Medical Center, patients with colorectal adenomas were randomly assigned to receive either a daily 5 mg dose of folic acid or a matched identical placebo for 3 years. All polyps were removed at baseline colonoscopy and each patient had a follow up colonoscopy at 3 years. The primary endpoint was a reduction in the number of recurrent adenomas at 3 years. RESULTS: Of 137 subjects, who were eligible after confirmation of polyp histology and run-in period to conform compliance, 94 completed the study; 49 in folic acid group and 45 in placebo group. Recurrence of adenomas at 3-year was compared between the two groups. The mean number of recurrent polyps at 3-year was 0.36 (SD, 0.69) for folic acid treated patients compared to 0.82 (SD, 1.17) for placebo treated subjects, resulting in a 3-fold increase in polyp recurrence in the placebo group. Patients below 70 years of age and those with left-sided colonic adenomas or advanced adenomas responded better to folic acid supplementation. CONCLUSION: High dose folic acid supplementation is associated with a significant reduction in the recurrence of colonic adenomas suggesting that folic acid may be an effective chemopreventive agent for colorectal neoplasia.

Study Type : Human Study
Additional Links
Pharmacological Actions : Chemopreventive : CK(2835) : AC(787)

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Sayer Ji
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