title: Mediators of acute and chronic periradicular lesions.
abstract: Multiple mechanisms are involved in the pathologic changes associated with formation of acute and chronic periradicular lesions. Mechanical injury to the periradicular tissues can cause activation of several pathways of inflammation and release of nonspecific mediators. Continuous irritation of periradicular tissues can cause activation of several pathways of inflammation and release of nonspecific mediators. Continuous egress of antigens from a pathologically involved root canal can also result in one or a combination of the various types of immunologic reactions. A number of these reactions participate in the destruction of periradicular tissues. Because of complex interactions between the various components of these systems, the dominance of any one pathway or substance may be difficult to establish.
authors.affiliation: School of Dentistry, Department of Endodontics, Loma Linda University, Calif.
authors.forename: M
authors.initials: M
authors.lastname: Torabinejad
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000276:immunology; D016718:Arachidonic Acid / Q000378:metabolism; D003167:Complement Activation; D016207:Cytokines / Q000502:physiology; D006801:Humans; D018836:Inflammation Mediators / Q000819:agonists* / Q000378:metabolism; D016234:Kallikrein-Kinin System / Q000502:physiology; D009479:Neuropeptides / Q000096:biosynthesis; D010447:Peptide Hydrolases / Q000378:metabolism; D010482:Periapical Abscess / Q000209:etiology* / Q000276:immunology; D010484:Periapical Granuloma / Q000209:etiology* / Q000276:immunology
chemical_list: D000942:Antigens, Bacterial; D016207:Cytokines; D018836:Inflammation Mediators; D009479:Neuropeptides; D016718:Arachidonic Acid; D010447:Peptide Hydrolases