Mary Ed Boulton – författare

Paradoxically, Daniel Defoe is diminished by his popularity as the author of a handful of important novels, since the remainder of his voluminous writings suffer undue neglect. Fully to understand him he should be taken whole but his authorship of over 500 publications renders this feat well nigh impossible. The purpose of this selection, then, is to enable the reader to make or renew the acquaintance of Defoe on some of his favourite topics such as trade and politics, manners and morality, in poetry as well as prose, and in works like A True Relation of the Apparition of One Mrs Veal and Memoirs of a Cavalier, which are characteristic blends of fact and fiction. Equipped with the insights possible from this sample, the reader - it is hoped - will return to the major novels with a keener appreciation of their distinctive quality and a livelier sense of their author.

In this volume, we hope to cover the malor techniques that are presently being used to analyze the actions of drugs used in psyc- atry. The contributors of the chapters are active researchers who have considerable practical experience with the techniques they are describing, and the emphasis in the chapters is on three types of psychiatric drugs, namely antidepressants, antipsychotics, and anxiolytics. The first chapter, by Curry and Yu, discusses protein binding of psychotropic drugs, with special reference to equilibrium ana- sis as the method of assessment and to lipophilicity correlations. Since many of the drugs used in treating psychiatric disorders are bound extensively to protein, this aspect is of great importance with regard to their therapeutic actions and toxicity, Basic mat- matical models, techniques for the study of protein binding, molecular aspects of protein binding, binding in relation to lipophilicity, indirect approaches to measurement of the fraction of drug bound, the function of protein binding, and tissue binding are among the topics discussed. Chapter 2, by Norman and B- rows, deals with the principles of isotope derivative assays and their applications to antidepressants and antipsychotics; extensive protocols are provided. The third chapter, by Cooper, deals with analysis by gas-liquid chromatography. Sample collection and storage, extraction procedures, column selection, use of internal standards, types of detectors, techniques of application, and - plications to specific drugs are among the topics discussed.

Serendipitous discovery has played an important role m the identification of physiological mechanisms in central and peri- eral neurotransmission. In many cases, the subsequent followup of these discoveries has been substantially aided by previouslyiden- fied natural substances that interfered with these mechanisms. The site of neuromuscular blockade produced by curare extracts, for example, was shown in the 1850s by Claude Bernard, and Sir Henry H. Dale m 1906 discovered the reversal of the pressor effects of adrenal extracts by ergot alkaloids. These findings were the first clues that led eventually to the definition of mcotinic cholinergic receptors and the present classification of adrenergic receptors. In the 1950s many discoveries, including the identification of the catecholamines and 5-hydroxytryptamine in the central n- vous system, followed by the development of specific sensitive biochemical and histochemical methods and the introduction of modern psychotropic drugs led to our increased understanding of chemical transmission and the formulation of theories that attempt to explain the causes of some mental disorders.The finding that hydroxylated derivatives of noradrenaline and- hydroxytryptamine are readily taken up by catecholaminergic or serotonergic neurons, and that this is followed by poisoning and death of the cell, encouraged the use of these compounds for the mapping of central and peripheral catecholamine or- hydroxytryptamine systems, and the mvestigation of the re- vance of these pathways to receptor regulation or behavioral - sponses.

Lipids m the nervous system are major components of the m- branes. The presence of glycolipids in high concentrations is unique for the nervous system. Recent discoverres of the functronal and pathological importance of lipids such as diacylglycerols, polyphosphoinositides, prostaglandins, leukotrienes, docosahexaenoic acid, platelet activating factor, and gangliosides have markedly increased the number of publications on nervous system lipids. Many new methods have been developed. Thus, there IS a need for this volume that is dedicated to that methodo- gy. This volume places all of the methods for lipids into perspective with recommendations concerning the selection of a method for a specific purpose. Lloyd A. Horrocks vii Contents ...Preface to the Series vi Preface...*...xix List of Contributors Lipid Extraction Norman S. Radin 1 1. Introduction ...5 2. Properties of Solvents 2.1. Ethers ...6 8 2.2. Alcohols ...9 2.3. Halocarbons ...9 2.4. Hydrocarbons ...2.5. Miscellaneous Solvents ...10 ...10 3. Storage of Lipid Extracts 14 4. Homogenizers ...15 5. Separating the Extract from the Tissue Residue 15 5.1. Use of Filtration ...16 5.2. Centrifugation ...17 6.Removing Nonlipids from Lipid Extracts 6.1. Removal of Nonlipids by Evaporation and Reextraction ...17 ...17 6.2. Prewashing the Tissue Sample. 6.3. Removal of Nonlipids by Precipitating the Lipids with the Proteins ...18 ...19 6.4. Liquid/Liquid Partitioning ...19 6.5. Removal of Nonlipids by Dialysis 6.6. Separation from Nonlipids by Changing a 21 Partition Constant ...

to the Animal Models Volumes This and several other volumes in the Neuromethods series will describe a number of animal models of neuropsychiatric disorders. Because of increasing public concern over the ethical treatment of animals in research, we felt it incumbent upon us to include this general preface to these volumes in order to indicate why we think further - search using animals is necessary and why animal models of psychiatric disorders, in particular, are so important. We recognize that animals should only be used when suitable alternatives are not available. We think it self-e- dent, however, that humans can only be experimented upon in severely proscribed circumstances and alternative pro- dures using cell or tissue culture are inadequate in any models requiring assessments of behavioral change or of complex in vivo processes. However, when the distress, discomfort, or pain to the animals outweighs the anticipated gains for human welfare, then the research is not ethical and should not be carried out. It is imperative that each individual researcher examine his/her own research from a critical moral standpoint - fore engaging in it, taking into consideration the animals’ welfare as well as the anticipated gains. Furthermore, once a decision to proceed with research is made, it is the researcher’s responsibility to ensure that the animals’ w- fare is of prime concern in terms of appropriate housing, feeding, and maximum reduction of any uncomfortable or distressing effects of the experimental conditions, and that these conditions undergo frequent formalized monitoring.