Overview

"During half a century, cytochrome P450 in its original uniqueness as an optically ""wrong"" cytochrome has attracted many investigators, who have contributed to the unveiling of a bewildering multiplicity of biologically important functions of the, by now very large, superfamily of cytochrome P 450 enzymes. With its discovery in 1958 and with the advent of more refined spectroscopic methodologies, through the double wavelength spectrophotometry, the mysterious enzyme system began to reveal its secrets in a swift stream of investigative successes. As one of the most extensively studied enzyme systems worldwide the interest in cytochromes P450 very much reflects its importance in the elimination of drugs and other chemicals from the body and its role in chemical toxicity and in the aetiology of diseases such as cancer. There has been significant progress in research in this area in recent years and current books on this subject are now out of date. This much needed, new, fully up-to-date publication fills this gap and emphasises the new relevant topics that have emerged during the last decade in an easily accessible manner. The enzyme system, cytochromes P450, comprises a number of families/subfamilies, and the focus of the book is to deal with each individually, furnishing information directly relevant to scientists involved in the development of chemicals, in particular in the evaluation of their safety. The book has contributions from internationally respected scientists who are research-active in the relevant areas. The authors have made extensive use of figures and tables so that the reader can access the necessary information without always having to read the text. In addition, a very extensive, user-friendly index is a unique hallmark of the book. Part A of this monograph introduces the reader to the current knowledge of the evolutionary development of cytochrome P450 structure and function. Furthermore, it deals with the role of this enzyme in the formation of reactive intermediates. The shrewd and extensive utilisation of the molecular biology methodology very rapidly led to a vast body of enzymes calling for a classification of the plethora of different cytochromes P450 (the superfamily) into families and subfamilies. This is aptly exemplified by the ten chapters in Part B of this book, dealing with ten subfamilies and two families of cytochrome P450. Part C offers an insight into another aspect of cytochrome P450 research, namely its regulation through receptor-mediated stimuli - as opposed to enzyme induction or inhibition. The final chapter translates the current data on one of several drug metabolising systems into clinical application and highlights the role of cytochromes P450 in the treatment of neoplastic growth. The book deals extensively with each family/subfamily of the cytochromes P450 that contribute to the metabolism of xenobiotics. Essential and invaluable information is provided for the industrial research scientist working with fine chemicals, and especially those in the pharmaceutical industry, dealing with the safety evaluation of chemicals or being involved in the study of their metabolism, pharmacokinetics and toxicological properties. It should also prove of interest to Regulators concerned with the safety evaluation of chemicals, research pharmacologists and toxicologists, and postgraduate students studying drug metabolism and toxicology at an advanced level."

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9780854042746

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"""In summary, this monograph within the Issues in Toxiciology series is a highly informative and competent as well as stimulating account on our current knowledge in CYPology and will be an excellent orientation especially for young researchers entering the field"" Toxicology ""this book provides a readable, up-to-date review of the critical roles of cytochrome P450 enzymes in all areas of toxicology. As such, it fills a void in the current review literature..."" Chemistry World, Reviewed by Paul R. Ortiz de Montellano, October Issue"

<p>Xenobiotic Metabolism<p>Cytochromes P450. Role in the metabolism and toxicity of drugs and other xenobiotics <br>Costas Ioannides<br>Cambridge, UK, RSC Publishing 2008 - 400pp - (HB) ISBN 9780854042746 <p>Reviewed by Paul R Ortiz de Montellano <p>This book is intended for postgraduate students and professionals interested in the toxicological consequences of the metabolism of drugs and xenobiotics by cytochrome P450 enzymes. <br>Although an introductory chapter provides general background on the cytochrome P450 system, most of the book addresses the roles of these enzymes in toxicology, with a central core of chapters in which the roles of the individual P450 families are surveyed. The organic and mechanistic chemistry of the reactions is sporadically discussed, but the book's strength is its biochemical and toxicological focus. <br>The approach of reviewing the cytochrome P450 system and its role in drug activation, followed by discussion of the roles of the individual P4

Xenobiotic Metabolism <p>Cytochromes P450. Role in the metabolism and toxicity of drugs and other xenobiotics <br>Costas Ioannides<br>Cambridge, UK, RSC Publishing 2008 ] 400pp ] (HB) ISBN 9780854042746 <p>Reviewed by Paul R Ortiz de Montellano <p>This book is intended for postgraduate students and professionals interested in the toxicological consequences of the metabolism of drugs and xenobiotics by cytochrome P450 enzymes. <br>Although an introductory chapter provides general background on the cytochrome P450 system, most of the book addresses the roles of these enzymes in toxicology, with a central core of chapters in which the roles of the individual P450 families are surveyed. The organic and mechanistic chemistry of the reactions is sporadically discussed, but the book's strength is its biochemical and toxicological focus. <br>The approach of reviewing the cytochrome P450 system and its role in drug activation, followed by discussion of the roles of the individual P450 families, and finishing with aspects of regulation is effective. However, the coverage is selective rather than comprehensive. Thus, one finds an extended discussion of the use of modeling in substrate predictions, but only a brief survey of the principles of enzyme inactivation. Likewise, the activation of polycyclic aromatic hydrocarbons is extensively reviewed, but other activation reactions, such as those of alkyl halides heterocyclic rings, are essentially not discussed. Most surprisingly, the prototypical oxidation of acetaminophen to a hepatotoxic species is not covered in any detail. <br>Despite its shortcomings, this book provides a readable, up-to-date review of the critical roles ofcytochrome P450 enzymes in all areas of toxicology. As such, it fills a void in the current review literature and will be welcomed by investigators interested in the contribution of oxidative xenobiotic metabolism to xenobiotic and drug toxicity. <p>Chemistry World. 2008. 5(10), p.p.75

In summary, this monograph within the Issues in Toxiciology series is a highly informative and competent as well as stimulating account on our current knowledge in CYPology and will be an excellent orientation especially for young researchers entering the field Toxicology this book provides a readable, up-to-date review of the critical roles of cytochrome P450 enzymes in all areas of toxicology. As such, it fills a void in the current review literature... Chemistry World, Reviewed by Paul R. Ortiz de Montellano, October Issue

Author Information

Costas Ioannides, BSc (University of Liverpool), PhD (University of Surrey), DSc (University of Liverpool) is currently Professor of Mechanistic Toxicology at the University of Surrey and is an established author in this area.

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