The intent in initiating this volume was to bring together a series of essays which would define our present understanding of the endosome and lysosome and their interrelationship. The editors deliberately encouraged the contributors to be speculative; to strive to put order to the "real" world of incomplete and sometimes conflicting data. Seeing science from the laboratory bench can often be like viewing an impressionistic painting from up close; a series of paint dabs with no apparent order. The contributors to this volume were asked to step back and leave the reader with a sense of the whole as well as the detail. To the extent that this has happened, the credit should go to the individual authors.
The increasing awareness on the varied consequences of hypogonadism in distinct organs and systems has supported the notion of estrogens as systemic agents. This observation is congruent with the variety of tissues affected by - trogens when used in hormone therapy formulations on hypogonadic women. Apart from the genital tract and the breast, recognized as traditional targets for estrogens, the skeleton, the vascular tree, or the central nervous system, are good examples of territories that have demonstrated sensitivity to estrogens. This evidence has created great interest, as shown by the great amount of lit- ature that has been produced on the bene?ts and risks associated with the use of estrogens. In parallel to the clinical interest, basic research has improved our kno- edge on the complexities involved in estrogen action at the molecular level. Together with effects mediated through speci?c receptors, a concept that has been the mainstay of the interpretation of estrogen action for years, there is enough evidence to hold the notion of receptor-independent effects. The substantial advances in modern technology applied to research have helped in enlightening the particulars of this versatile action of estrogens. This more detailed knowledge on the sophisticated mechanism of action of estrogens has nourished the emergence of multiple hypotheses speculating with the p- sibility of manipulating estrogen action. The notion that a widely extended regulatory system of cell function, as it is the estrogen receptor machinery, might be modulated at wish has arisen as an attractive, although still elusive postulate.
Our understanding of the ways that neuroactive steroids act in the brain has been increased by transgenic approaches, recombinant expression systems, higher resolution electrophysiological paradigms, and the development of technology to localize receptors. Recent behavioral studies examining the effects of steroids on mood, seizure susceptibility, reproductive function, and sensorimotor control have shed new light on this complex field and inspired exciting developments.
Neurosteroid Effects in the Central Nervous System: The Role of the GABAA Receptor presents a complete overview of the effects of neuroactive steroids in the brain, describes new methods for investigating these effects, and features the latest theories on steroid action in the central nervous system, with emphasis on the GABAA receptor. The text discusses techniques for receptor localization and quantification, recombinant expression systems to identify steroid-responsive receptor isoforms, the use of transgenic/antisense strategies to determine steroid effects on neuronal circuits and behavior, and techniques to examine the cellular effects of steroid action in the brain. The material covers the range of steroid action on such end points as mood, cognition, epilepsy, neuroprotection, and learning/plasticity, and it describes methods using molecular, electrophysiological, and behavioral techniques to link cellular mechanisms of steroid action with behavioral effects.
This timely compilation provides important insight into the possibilities for steroid effects on the central nervous system. It will appeal to the clinical, behavioral, and molecular interests of research scientists, clinicians, and students interested in broadening their knowledge about neurosteroid effects with relevance to premenstrual syndrome and post-partum changes.
All three peroxisome proliferator-activated receptor (PPAR) subtypes share a high degree of structural homology while exhibiting differences in function, tissue distribution, and ligand specificity. In Peroxisome Proliferator-Activated Receptors: Discovery and Recent Advances, the authors trace the history of PPAR discovery and detail the receptor structure and its posttranslational modifications. Furthermore, endogenous ligands as well as various classes of exogenous ligands, subtype-selective, dual and pan agonists as well as antagonists, are discussed. In addition, the tissue distribution and versatile functions of PPAR subtypes in major organs are described. As PPARs play critical roles as regulators of numerous physiological as well as pathophysiological pathways, Peroxisome Proliferator-Activated Receptors: Discovery and Recent Advances aims to help researchers to develop safer and more effective PPAR modulators as therapeutic agents to treat a myriad of diseases and conditions.
"As a Man Thinketh" is a literary essay by James Allen, published in 1903. It was described by Allen as ..". dealing with the power of thought, and particularly with the use and application of thought to happy and beautiful issues. Allen has tried to make the book simple, so that all can easily grasp and follow its teaching, and put into practice the methods which it advises. It shows how, in his own thought-world, each man holds the key to every condition, good or bad, that enters into his life, and that, by working patiently and intelligently upon his thoughts, he may remake his life, and transform his circumstances. It was also described by Allen as "A book that will help you to help yourself," "A pocket companion for thoughtful people," and "A book on the power and right application of thought.
Magnet Therapy Articles
Magnet Therapy Books