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Current Topics in Medicinal Chemistry

Editor-in-Chief

ISSN (Print): 1568-0266
ISSN (Online): 1873-4294

Ruthenium as an Effective Nitric Oxide Scavenger

Author(s): Celine J. Marmion, Beth Cameron, Clodagh Mulcahy and Simon P. Fricker

Volume 4, Issue 15, 2004

Page: [1585 - 1603] Pages: 19

DOI: 10.2174/1568026043387322

Price: $65

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Abstract

Whilst nitric oxide (NO) has emerged as one of the most versatile and ubiquitous molecules in the human body with a diverse range of physiological functions, dysfunction in NO biosynthesis or metabolism has led to the pathogenesis of a number of disease states. A variety of therapeutic strategies have therefore emerged that either reduce or increase endogenous NO levels depending on the disease pathology. The predominant strategy to date to reduce levels of NO is to utilise specific isoform selective inhibitors of nitric oxide synthases, the enzymes responsible for NO biosynthesis. An alternative line of attack, not r elate d to specificity for a particular enzyme, but rather on compartmental localisation and pharmacokinetics, is to re move or sc ave nge the exce ss NO re sponsible for the dise ase pathology. In this regard, a number of NO scavenger molecules have demonstrated pharmacological activity across a broad spectrum of disease states. This review will highlight the rationale behind the development, and the current state of play, of one such class of NO scavengers, complexes of the d-block transition metal ruthenium. Prior to this, a brief overview of the remarkable diversity of NO, both from a chemical and biological viewpoint, will be provided for perspective.

Keywords: ruthenium, nitric oxide, nitric oxide synthase, nitric oxide scavenger, free radical, guanylate cyclase


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