Robert C. Murphy – författare

This book examines closely the structure of various lipids through specific examples of mass spectral data obtained by different ionization techniques-including electron ionization, chemical ionization, and fast atom bombardment. Including over 80 complete mass spectra of lipids as well as over 120 detailed mechanistic schemes of their ion chemistry, this work will provide the advanced student and experienced mass spectroscopist with a fundamental base of information on fatty acyl-type lipids.

The emerging field of lipidomics has been made possible because of advances in mass spectrometry, and in particular tandem mass spectrometry of lipid ions generated by electrospray ionization. The ability to carry out basic biochemical studies of lipids using electrospray ionization is predicated upon understanding the behaviour of lipid derived ions following collision induced decomposition and mechanisms of product ion formation. During the past 20 years, a wealth of information has been generated about lipid molecules that are now analysed by mass spectrometry, however there is no central source where one can obtain basic information about how these very diverse biomolecules behave following collisional activation. This book brings together, in one volume, this information so that investigators considering using tandem mass spectrometry to structurally characterize lipids or to quantitate their occurrence in a biological matrix, will have a convenient source to review mechanism of decomposition reactions related to the diversity of lipid structures.A separate chapter is devoted to each of seven major lipid classes including fatty acids, eicosanoids and bioactive lipid mediators, fatty acyl esters and amides, glycerol esters, glycerophospholipids, sphingolipids, and steroids. Mechanistic details are provided for understanding the pathways of formation of major product ions and ions used for structural characterization. In most cases specific ancillary information has been critical to understand the pathways, including isotope labeling and high resolution analysis of precursor and product ions. For a few specific examples such data is missing and pathways are proposed as a means to initiate further mass spectral experiments to prove or disprove pathway hypotheses. While this work largely centres on the lipid biochemistry of animal (mammalian) systems, general principles can be taken from the specific examples and applied to lipid biochemistry found in plants, fungi, prokaryotes and archeal organisms.

Many new antileukotriene drugs are now marketed as antiasthma drugs and represent the first new drugs in this field since the 1970s. This book covers the steps that have led to the discovery and development of these new drugs and offers detailed descriptions of their clinical applications. The review chapters on the main aspects of basic and applied leukotriene research are written by leading specialists in the field, and the volume takes a new approach in presenting information of particular interest to both scientists and clinicians in the fields of asthma, inflammation and allergic diseases.