alexa Low-dose aspirin affects the small bowel mucosa: results of a pilot study with a multidimensional assessment.
Pharmaceutical Sciences

Pharmaceutical Sciences

Pharmaceutica Analytica Acta

Author(s): Smecuol E, Pinto Sanchez MI, Suarez A, Argonz JE, Sugai E,

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Abstract BACKGROUND & AIMS: Whether low-dose aspirin (acetylsalicylic acid [ASA]) produces intestinal damage is controversial. Our aim was to determine whether the small bowel is damaged by low-dose ASA on a short-term basis. METHODS: Twenty healthy volunteers (age range, 19-64 years) underwent video capsule endoscopy (VCE), fecal calprotectin, and permeability tests (sucrose and lactulose/mannitol [lac/man] ratio) before and after ingestion of 100 mg of enteric-coated ASA daily for 14 days. Video capsule images were assessed by 2 independent expert endoscopists, fully blinded to the treatment group, by using an endoscopic scale. RESULTS: Post-ASA VCE detected 10 cases (50\%) with mucosal damage not apparent in baseline studies (6 cases had petechiae, 3 had erosions, and 1 had bleeding stigmata in 2 ulcers). The median baseline lac/man ratio (0.021; range, 0.011-0.045) increased after ASA use (0.036; range, 0.007-0.258; P = .08), and the post-ASA lac/man ratio was above the upper end of normal (>0.025) in 10 of 20 volunteers (vs baseline, P < .02). The median baseline fecal calprotectin concentration (6.05 microg/g; range, 1.9-79.2) also increased significantly after ASA use (23.9 microg/g; range, 3.1-75.3; P < .0005), with 3 patients having values above the cutoff (>50 microg/g). Five of 10 subjects with abnormal findings at VCE also had lac/man ratios above the cutoff. Median baseline sucrose urinary excretion (70.0 mg; range, 11.8-151.3) increased significantly after ASA administration (107.0 mg; range, 22.9-411.3; P < .05). CONCLUSIONS: The short-term administration of low-dose ASA is associated with mucosal abnormalities of the small bowel mucosa, which might have implications in clinical practice. This article was published in Clin Gastroenterol Hepatol and referenced in Pharmaceutica Analytica Acta

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