Abstract
Calprotectin is a 36.5 kD calcium and zinc binding protein in the S100 protein family. Fecal calprotectin levels are elevated in patients with inflammatory bowel disease and some other gastrointestinal disorders such as colorectal carcinoma. We decided to evaluate the fecal calprotectin level to see if it was able to distinguish between functional and organic causes of constipation. Seventy-six children aged 1 to 120 months that all underwent deep rectal mucosa biopsies at Children Medical Center from November 2010 till September 2011 were recruited. Nineteen cases were diagnosed as Hirschsprung's disease and 57 of the patients had nerve ganglion cells in their biopsies. Calprotectin concentration was analyzed by the ELISA method. Although there was a significant difference between the median of the two groups (p=0.036), the median was not above the predetermined cutoff value of 50 µg/g. We propose that fecal calprotectin, using the above cutoff value, has limited value in differentiating functional constipation from Hirschsprung's disease.
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