PMID- 16454844 OWN - NLM STAT- MEDLINE DCOM- 20060316 LR - 20220408 IS - 0002-9270 (Print) IS - 1572-0241 (Electronic) IS - 0002-9270 (Linking) VI - 101 IP - 2 DP - 2006 Feb TI - Serum immune responses predict rapid disease progression among children with Crohn's disease: immune responses predict disease progression. PG - 360-7 AB - BACKGROUND AND AIM: Crohn's disease (CD) is a heterogeneous disorder characterized by diverse clinical phenotypes. Childhood-onset CD has been described as a more aggressive phenotype. Genetic and immune factors may influence disease phenotype and clinical course. We examined the association of immune responses to microbial antigens with disease behavior and prospectively determined the influence of immune reactivity on disease progression in pediatric CD patients. METHODS: Sera were collected from 196 pediatric CD cases and tested for immune responses: anti-I2, anti-outer membrane protein C (anti-OmpC), anti-CBir1 flagellin (anti-CBir1), and anti-Saccharomyces-cerevisiae (ASCA) using ELISA. Associations between immune responses and clinical phenotype were evaluated. RESULTS: Fifty-eight patients (28%) developed internal penetrating and/or stricturing (IP/S) disease after a median follow-up of 18 months. Both anti-OmpC (p < 0.0006) and anti-I2 (p < 0.003) were associated with IP/S disease. The frequency of IP/S disease increased with increasing number of immune responses (p trend = 0.002). The odds of developing IP/S disease were highest in patients positive for all four immune responses (OR (95% CI): 11 (1.5-80.4); p = 0.03). Pediatric CD patients positive for > or =1 immune response progressed to IP/S disease sooner after diagnosis as compared to those negative for all immune responses (p < 0.03). CONCLUSIONS: The presence and magnitude of immune responses to microbial antigens are significantly associated with more aggressive disease phenotypes among children with CD. This is the first study to prospectively demonstrate that the time to develop a disease complication in children is significantly faster in the presence of immune reactivity, thereby predicting disease progression to more aggressive disease phenotypes among pediatric CD patients. FAU - Dubinsky, Marla C AU - Dubinsky MC AD - Department of Pediatrics, Genetics Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Lin, Ying-Chao AU - Lin YC FAU - Dutridge, Debra AU - Dutridge D FAU - Picornell, Yoana AU - Picornell Y FAU - Landers, Carol J AU - Landers CJ FAU - Farrior, Sharmayne AU - Farrior S FAU - Wrobel, Iwona AU - Wrobel I FAU - Quiros, Antonio AU - Quiros A FAU - Vasiliauskas, Eric A AU - Vasiliauskas EA FAU - Grill, Bruce AU - Grill B FAU - Israel, David AU - Israel D FAU - Bahar, Ron AU - Bahar R FAU - Christie, Dennis AU - Christie D FAU - Wahbeh, Ghassan AU - Wahbeh G FAU - Silber, Gary AU - Silber G FAU - Dallazadeh, Saied AU - Dallazadeh S FAU - Shah, Praful AU - Shah P FAU - Thomas, Danny AU - Thomas D FAU - Kelts, Drew AU - Kelts D FAU - Hershberg, Robert M AU - Hershberg RM FAU - Elson, Charles O AU - Elson CO FAU - Targan, Stephan R AU - Targan SR FAU - Taylor, Kent D AU - Taylor KD FAU - Rotter, Jerome I AU - Rotter JI FAU - Yang, Huiying AU - Yang H CN - Western Regional Pediatric IBD Research Alliance LA - eng GR - M01-RR00425/RR/NCRR NIH HHS/United States GR - K23 DK066248-04/DK/NIDDK NIH HHS/United States GR - DK 46763/DK/NIDDK NIH HHS/United States GR - M01 RR000425/RR/NCRR NIH HHS/United States GR - K23 DK066248/DK/NIDDK NIH HHS/United States GR - P01 DK046763/DK/NIDDK NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Gastroenterol JT - The American journal of gastroenterology JID - 0421030 RN - 0 (Antibodies, Bacterial) RN - 0 (Biomarkers) RN - 0 (CBir1 flagellin) RN - 0 (OmpC protein) RN - 0 (Porins) RN - 0 (Silent Information Regulator Proteins, Saccharomyces cerevisiae) RN - 12777-81-0 (Flagellin) SB - IM MH - Adolescent MH - Adult MH - Antibodies, Bacterial/*blood/immunology MH - Biomarkers/blood MH - Child MH - Child, Preschool MH - Colonoscopy MH - Crohn Disease/blood/*immunology/pathology MH - Disease Progression MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Flagellin/blood/*immunology MH - Follow-Up Studies MH - Humans MH - Male MH - Phenotype MH - Porins/blood/*immunology MH - Prognosis MH - Prospective Studies MH - Silent Information Regulator Proteins, Saccharomyces cerevisiae/blood/*immunology PMC - PMC2259248 MID - NIHMS28370 COIS- Conflict of Interest Statement: Dr. Targan is a shareholder and co-founder of Prometheus Labs. Dr. Dubinsky serves as a consultant for Prometheus Labs. Carol Landers is a share holder for Prometheus Labs. EDAT- 2006/02/04 09:00 MHDA- 2006/03/17 09:00 PMCR- 2008/03/02 CRDT- 2006/02/04 09:00 PHST- 2006/02/04 09:00 [pubmed] PHST- 2006/03/17 09:00 [medline] PHST- 2006/02/04 09:00 [entrez] PHST- 2008/03/02 00:00 [pmc-release] AID - AJG456 [pii] AID - 10.1111/j.1572-0241.2006.00456.x [doi] PST - ppublish SO - Am J Gastroenterol. 2006 Feb;101(2):360-7. doi: 10.1111/j.1572-0241.2006.00456.x.