title: Antiinflamatory agents less dangerous for gastrointestinal tract.
abstract: NSAIDs represent one of the most commonly used therapeutic drug groups world wide. 1.5% of the world's population is estimated as taking NSAIDs. However, their use is not risk free and gastrointestinal (GI) lesions do appear, which is indeed the main reason for their toxicity. Frequently (50%) NSAID-induced GI lesions are asymptomatic, and perforations or hemorrhages could occur without any previous symptoms. 71% of GI perforations and 50% of upper gastric hemorrhages (UGH) are associated with taking NSAIDs. How frequent GI lesions appear is directly related to whether the patient is in a risk group or not. Factors increasing the risk of GI lesions occurring are the following: being older than 60, using corticoids or other NSAIDs concomitantly, having a history of duodenal ulcer, alcohol consumption, smoking or taking oral anticoagulants. As the toxicity and how frequent the lesions appear depend on which drug is used, there is a need for research into new drugs which are both clinically effective and safer to use. GI toxicity of NSAIDs is mediated by two mechanisms, direct toxicity and prostaglandin synthesis inhibition or sistemic mechanism. Due to the relatively recent discoveries concerning the physiopathology of inflammation and gastric physiology, research into new NSAID derivatives is taking place. Such derivatives are prodrugs, galenic buffer forms, selective COX-2 inhibitors, isomeric compounds, NO-donors, and as a future possibility, phosphodiesterase inhibitors.
authors.affiliation: Division of Digestive Diseases, Virgen Macarena University Hospital, C/ Dr. Fedriani, 3.41071, Sevilla. (SPAIN).
authors.forename: M
authors.initials: M
authors.lastname: Rodríguez-Téllez
authors.forename: F
authors.initials: F
authors.lastname: Argüelles
authors.forename: J M
authors.initials: JM
authors.lastname: Herrerías
authors.forename: D
authors.initials: D
authors.lastname: Ledro
authors.forename: J
authors.initials: J
authors.lastname: Esteban
authors.forename: J M
authors.initials: JM
authors.lastname: Herrerías
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects*; D017209:Apoptosis / Q000187:drug effects; D016718:Arachidonic Acid / Q000378:metabolism; D001639:Bicarbonates / Q000378:metabolism; D002455:Cell Division / Q000187:drug effects; D004064:Digestive System / Q000187:drug effects*; D005744:Gastric Acid / Q000378:metabolism; D005753:Gastric Mucosa / Q000098:blood supply; D006801:Humans; D008833:Microcirculation; D009093:Mucus / Q000378:metabolism; D009504:Neutrophils / Q000502:physiology; D009569:Nitric Oxide / Q000502:physiology; D010084:Oxidation-Reduction
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D001639:Bicarbonates; D016718:Arachidonic Acid; D009569:Nitric Oxide