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Intestinal permeability was measured in a total of 42 children, 29 of whom had celiac disease. The celiac children were studied at presentation, during gluten-free diet, and/or at gluten challenge. The permeability was assessed by oral lactulose/L-rhamnose in all 42 children and also by different-sized polyethylene glycols (PEG) in 36 children. Results were compared with the findings of small intestinal biopsy. The mean of the permeability tests in children with enteropathy was significantly abnormal compared with the result in children with a normal mucosal morphology. The lactulose/L-rhamnose test and the PEG test gave equivalent results in the same child. In the celiac children abnormal permeability properties at presentation normalized during gluten-free diet and reappeared during gluten challenge. It is concluded that measurement of intestinal permeability may be a valuable tool in monitoring children with celiac disease, preferably when serial measurements are available in the same child.
Stenhamma et al. (Sun,) studied this question.