title: [Type I hypersensitivity reactions and etiopathogenesis of hemorrhagic rectocolitis].
abstract: There is a body of clinical, epidemiological, biologic, histological and therapeutic data suggesting that type I hypersensitivity plays a role in the pathogenesis and maintenance of ulcerative colitis. Contradictory evidence from different studies on the pathogenic mechanisms may simply mean that there is not one but several types of ulcerative colitis. Chronic inflammation of the intestine would cover a heterogeneous group of conditions. Genetic susceptibility controlling one of more anomalies of the immune system would be triggered by external factors such as respiratory or food allergies, viral or bacterial infections or other factors including smoking or stress. The wide range of factors involved would explain the variety of findings reported by different groups searching for a single pathogenic mechanism. Finally, as emphasized by other authors, screening for subgroups of patients with allergy among the ulcerative colitis population would be useful in adapting treatment and developing a more specific therapeutic strategy not only for acute phases but perhaps also for preventive treatment.
authors: Service d'Hépato-Gastroentérologie, Centre Hospitalier Lyon-Sud, Pierre-Bénite.
authors: E
authors: E
authors: Leprince
authors: C
authors: C
authors: André
authors: L
authors: L
authors: Descos
mesh_terms: D000305:Adrenal Cortex Hormones / Q000627:therapeutic use; D018927:Anti-Asthmatic Agents / Q000627:therapeutic use; D003093:Colitis, Ulcerative / Q000209:etiology* / Q000276:immunology / Q000628:therapy; D004205:Cromolyn Sodium / Q000627:therapeutic use; D005260:Female; D005512:Food Hypersensitivity / Q000150:complications* / Q000276:immunology / Q000628:therapy; D006801:Humans; D006969:Hypersensitivity, Immediate / Q000150:complications* / Q000276:immunology / Q000628:therapy; D007073:Immunoglobulin E / Q000032:analysis; D008297:Male; D016269:Milk Hypersensitivity / Q000150:complications* / Q000276:immunology / Q000628:therapy; D010438:Peptic Ulcer Hemorrhage / Q000209:etiology* / Q000276:immunology / Q000628:therapy; D012130:Respiratory Hypersensitivity / Q000150:complications* / Q000276:immunology / Q000628:therapy
chemical_list: D000305:Adrenal Cortex Hormones; D018927:Anti-Asthmatic Agents; D007073:Immunoglobulin E; D004205:Cromolyn Sodium
vernacular_title: Réactions d'hypersensibilité de type I et étiopathogénie de la rectocolite hémorragique.