PMID- 9155585 OWN - NLM STAT- MEDLINE DCOM- 19970602 LR - 20190501 IS - 0017-5749 (Print) IS - 1458-3288 (Electronic) IS - 0017-5749 (Linking) VI - 40 IP - 1 DP - 1997 Jan TI - Antineutrophil cytoplasm autoantibodies against bactericidal/permeability-increasing protein in inflammatory bowel disease. PG - 105-9 AB - BACKGROUND: Bactericidal/permeability-increasing protein (BPI), a constituent of primary neutrophil granules, is a potent natural antibiotic and an antineutrophil cytoplasm antibody (ANCA) antigen in cases of vasculitis in which the target antigen is neither myeloperoxidase (MPO) nor proteinase-3 (PR3). AIM: To investigate BPI as a possible target antigen for ANCAs in inflammatory bowel disease. METHODS: ANCAs were detected by routine immunofluorescence (IIF) and solid phase enzyme linked immunosorbent assay (ELISA) performed for antibodies to the purified neutrophil granule proteins; MPO, PR3, cathepsin-G, lactoferrin, and BPI in serum samples from 88 patients with inflammatory bowel disease (36 with Crohn's disease, 52 with ulcerative colitis). Thirty patients with bacterial enteritis acted as controls. RESULTS: Significantly more patients with ulcerative colitis were ANCA positive by IIF (60%) than patients with Crohn's disease (28%) or infectious enteritis (23%) (p < 0.001). IgG anti-BPI antibodies were present in 29% of patients with ulcerative colitis, 14% of patients with Crohn's disease, and 23% of patients with infectious enteritis, occurring in 44% of those patients with inflammatory bowel disease who were ANCA positive by IIF. Antibodies to other ANCA antigens were rare. The presence of ANCAs was not related to either disease activity or extent; presence of anti-BPI antibodies was significantly related to both a lower serum albumin concentration (p = 0.001) and a higher erythrocyte sedimentation rate (p = 0.02) in patients with ulcerative colitis, and to colonic involvement in patients with Crohn's disease (p = 0.01). CONCLUSION: BPI is a significant minority target antigen for ANCAs in inflammatory bowel disease that seems related to colonic Crohn's disease and disease activity in ulcerative colitis. Anti-BPI antibodies occur in infectious enteritis. FAU - Walmsley, R S AU - Walmsley RS AD - Department of Medicine, Royal Free Hospital School of Medicine, London. FAU - Zhao, M H AU - Zhao MH FAU - Hamilton, M I AU - Hamilton MI FAU - Brownlee, A AU - Brownlee A FAU - Chapman, P AU - Chapman P FAU - Pounder, R E AU - Pounder RE FAU - Wakefield, A J AU - Wakefield AJ FAU - Lockwood, C M AU - Lockwood CM LA - eng PT - Journal Article PL - England TA - Gut JT - Gut JID - 2985108R RN - 0 (Antibodies, Antineutrophil Cytoplasmic) RN - 0 (Antimicrobial Cationic Peptides) RN - 0 (Blood Proteins) RN - 0 (Immunoglobulin G) RN - 0 (Membrane Proteins) RN - 0 (bactericidal permeability increasing protein) RN - EC 1.11.1.7 (Peroxidase) RN - EC 3.4.- (Cathepsins) RN - EC 3.4.21.- (Lactoferrin) RN - EC 3.4.21.- (Serine Endopeptidases) RN - EC 3.4.21.20 (CTSG protein, human) RN - EC 3.4.21.20 (Cathepsin G) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antibodies, Antineutrophil Cytoplasmic/*analysis MH - Antimicrobial Cationic Peptides MH - Blood Proteins/*immunology MH - Case-Control Studies MH - Cathepsin G MH - Cathepsins/immunology MH - Colitis, Ulcerative/*immunology MH - Crohn Disease/*immunology MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Fluorescent Antibody Technique, Indirect MH - Humans MH - Immunoglobulin G/*analysis MH - Lactoferrin/immunology MH - Male MH - *Membrane Proteins MH - Middle Aged MH - Peroxidase/immunology MH - Prospective Studies MH - Serine Endopeptidases/*immunology PMC - PMC1027017 EDAT- 1997/01/01 00:00 MHDA- 1997/01/01 00:01 PMCR- 1997/01/01 CRDT- 1997/01/01 00:00 PHST- 1997/01/01 00:00 [pubmed] PHST- 1997/01/01 00:01 [medline] PHST- 1997/01/01 00:00 [entrez] PHST- 1997/01/01 00:00 [pmc-release] AID - 10.1136/gut.40.1.105 [doi] PST - ppublish SO - Gut. 1997 Jan;40(1):105-9. doi: 10.1136/gut.40.1.105.