Anna K Trauernicht1, Steven J Steiner. 1. Division of Pediatric Gastroenterology/Hepatology/Nutrition, James Whitcomb Riley Hospital for Children, Indiana University School of Medicine, 702 Barnhill Drive/ROC 4210, Indianapolis, IN 46202-5225, USA.
Abstract
BACKGROUND: Serum antibodies, including ASCA, anti-OmpC, and ANCA, correlate with disease location and predict disease phenotype in inflammatory bowel disease. AIM: The objective of this study was to determine relationships between serum antibody status and anthropometric data for children with newly diagnosed Crohn's disease. METHODS: A retrospective review was conducted on children diagnosed with Crohn's disease at our institution from 2003 to 2008. Patients who had ASCA IgA, ASCA IgG, anti-OmpC, and pANCA antibodies, and anthropometric data measured before diagnosis and therapy were included. Z-scores for height and weight were compared among groups according to the presence of specific antibodies. Spearman's rank correlation was used to assess association between antibodies and growth data. RESULTS: One hundred and two patients, mean age 11.9 years, met the inclusion criteria. Patients with the presence of any of the four antibodies had lower mean height and weight z-scores than patients without any antibodies present. When individual antibodies were studied, patients with positive ASCA titers had lower mean weight and height z-scores than patients without any antibodies present. Spearman's rank correlation coefficient demonstrated a significant association between increasing ASCA titers and lower weight z-scores, but not lower height z-scores. CONCLUSIONS: Pediatric patients with newly diagnosed Crohn's disease and the presence of ASCA antibodies have lower mean height and weight z-scores. This study provides evidence that specific subsets of children with Crohn's disease may be at greater risk of growth impairment.
BACKGROUND: Serum antibodies, including ASCA, anti-OmpC, and ANCA, correlate with disease location and predict disease phenotype in inflammatory bowel disease. AIM: The objective of this study was to determine relationships between serum antibody status and anthropometric data for children with newly diagnosed Crohn's disease. METHODS: A retrospective review was conducted on children diagnosed with Crohn's disease at our institution from 2003 to 2008. Patients who had ASCA IgA, ASCA IgG, anti-OmpC, and pANCA antibodies, and anthropometric data measured before diagnosis and therapy were included. Z-scores for height and weight were compared among groups according to the presence of specific antibodies. Spearman's rank correlation was used to assess association between antibodies and growth data. RESULTS: One hundred and two patients, mean age 11.9 years, met the inclusion criteria. Patients with the presence of any of the four antibodies had lower mean height and weight z-scores than patients without any antibodies present. When individual antibodies were studied, patients with positive ASCA titers had lower mean weight and height z-scores than patients without any antibodies present. Spearman's rank correlation coefficient demonstrated a significant association between increasing ASCA titers and lower weight z-scores, but not lower height z-scores. CONCLUSIONS: Pediatric patients with newly diagnosed Crohn's disease and the presence of ASCA antibodies have lower mean height and weight z-scores. This study provides evidence that specific subsets of children with Crohn's disease may be at greater risk of growth impairment.
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