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On the selectivity of superoxide dismutase mimetics and its importance in pharmacological studies Muscoli C; Cuzzocrea S; Riley DP; Zweier JL; Thiemermann C; Wang ZQ; Salvemini DBr J Pharmacol 2003[Oct]; 140 (3): 445-60The list of pathophysiological conditions associated with the overproduction of superoxide expands every day. Much of the knowledge compiled on the role of this radical in disease has been gathered using the native superoxide dismutase enzyme and, more recently, by the use of superoxide dismutase knockout models or transgenic models that overexpress the various isoforms of the enzyme. Although the native enzyme has shown promising anti-inflammatory properties in both preclinical and clinical studies, there were drawbacks and issues associated with its use as a therapeutic agent and pharmacological tool. Based on the concept that removal of superoxide modulates the course of inflammation, synthetic, low-molecular-weight mimetics of the superoxide dismutase enzymes that could overcome some of the limitations associated with the use of the native enzyme have been designed. In this review, we will discuss the advances made using various superoxide dismutase mimetics that led to the proposal that superoxide (and/or the product of its interaction with nitric oxide, peroxynitrite) is an important mediator of inflammation, and to the conclusion that superoxide dismutase mimetics can be utilized as therapeutic agents in diseases of various etiologies. The importance of the selectivity of such compounds in pharmacological studies will be discussed.|Animals[MESH]|Biomimetic Materials/chemistry/*pharmacology/therapeutic use[MESH]|Drug Delivery Systems/*methods/trends[MESH]|Humans[MESH]|Superoxide Dismutase/chemistry/*pharmacology/therapeutic use[MESH] |
