Download Free Cytotoxic Drugs And The Granulopoietic System Book in PDF and EPUB Free Download. You can read online Cytotoxic Drugs And The Granulopoietic System and write the review.

Since cytotoxic drugs were first developed, their damaging effects on bone marrow have attracted considerable interest. We now know that the bone marrow is an organ with rapid cell renewal in which maintenance of the steady-state depends on a high rate of cell production, and that the bone marrow toxicity of cytotoxic agents can be explained by the perturbation of such steady-state conditions. Experimental researchers have analysed in detail the effects of cytotoxic agents upon defined hematopoietic cell populations to define the mechanism of action and the location within the cell cycle at which cytotoxic drugs exert their cytocidal action. From such studies, a classification of cytotoxic agents according to their action upon cells during different phases of the cell cycle has been proposed [80-82]. Others have used the acute perturbation of the hematopoietic systems, caused by application of single high doses of cytotoxic agents, to analyse the patterns of depletion and reconstitution of the various hematopoietic compartments in an effort to shed light on the regulatory mechanisms that are responsible for the delicately balanced cell production of the hematopoietic cell renewal systems. A great deal of information on the structure of the hematopoietic systems has come from such studies, and kinetic parameters of these systems have been defined. To clinicians, the hematopoietic toxicity of antineoplastic agents has been an undesired though unavoidable side effect of almost all cytotoxic drugs introduced into clinical practice.
Each issue is packed with extensive news about important cancer related science, policy, politics and people. Plus, there are editorials and reviews by experts in the field, book reviews, and commentary on timely topics.
Everyone has heard of nature's "biological clocks", the phenomenon of periodic activity in plants, animals and humans. But what does chronobiology have to do with modern medicine? This book presents in a concise but comprehensive fashion the basic principles of chronobiology and their application to clinical medicine. The chapters are written by specialists in the field; they summarize the physiology, pathophysiology and pathology of the human time structure and outline the application of chronobiologic principles and techniques for diagnosis and treatment.
Transplantation of syngeneic (donor is a monozygous twin) or allogeneic (donor is an HLA-identical sibling) marrow provides the opportunity for aggressive antileukemic therapy without regard to marrow toxicity. Until 1975, marrow transplantation was carried out only after failure of all other therapy. Consequently, most patients were in advanced relapse. Six of 16 recipients of syngeneic marrow and 13 of 100 recipients of allogeneic marrow are still in remission after 5. 5-10 years [3, 7]. An actuarial survival curve of the first 100 patients grafted in Seattle after conditioning with cyclophos phamide (60 mg/kg on each of 2 successive days) and total body irradiation (1,000 rad) showed three periods of interest: (1) The first 4 months showed a rapid loss of patients associated with advanced illness, graft-versus-host disease, infections (in particular interstitial pneumonias), and recurrent leukemia; (2) from 4 months to 2 years, the curve showed a much slower rate of decline attributable primarily to recurrent leukemia; and (3) from 2-10 years, the curve was almost flat with a negligible loss of patients and no recurrent leukemia. This flat portion of the curve corresponded to 13% of the patients and indicates a strong probability that the majority of these survivors are cured of their disease [8]. Attempts at reducing the incidence of leukemic relapse after transplantation were made by a number of marrow transplant groups by added chemotherapy.
This book comprises the lectures presented at the workshop Modified Nuc1eosides and Cancer held from 28 September to 2 October, 1981 in Freiburg, West Germany. The workshop was organized by Gisela Nass and sponsored by the Deutsche Forschungsgemeinschaft. The purpose of the workshop was to cover the varied analytical methods for quantitative and qualitative determination of modified nucleosides and their metabolism including bio synthesis, all in relation to the function of these compounds in the origin and growth of cancer cells. The potential signi ficance of measuring modified nucleosides in body fluids for tumor diagnosis in humans received particular attention. Various fields of research which have previously been segregat ed are thus unified in this volume. Emphasis was also placed on the fact that modified nucleosides are constituents of the genetic material, the desoxyribonucleic> acid, on the one hand, and of the transfer ribonucleic acids on the other hand, with the latter macromolecules participating not only in the translation of genetic information into protein, but also in many regulatory processes in all single- and multi-, cellular organisms including man.
Measured by any criteria, research in chronobiology in general and chronopharmacology in particular has expanded rapidly in recent years. This expansion has been paralleled by an increasing recognition by those outside the field of the relevance and significance of recent developments in chronobiology. Advances in two areas have been chiefly responsible. First, application of the full range of modern techniques in behavioral, neurochemical, and molecular biology have greatly improved our understanding of basic clock mechanisms. In several species the genetic basis of the circadian clock is being progressively delineated. A complete picture of the neurochemical and neuroanatomical structure of the mammalian clock is emerging and the complex pattern of control mechanisms involving endogenous clock mechan isms and photic and nonphotic zeitgebers is being built up as a result of behavioral studies. Secondly, in parallel with these exciting developments in basic science, clinical applications are being convincingly demonstrated in the general fields of pharmacology and medicine as well as in specific areas, e.g., jet lag, shiftwork maladaption syndrome, blindness, and cardiovascular system. It is therefore an opportune time to review progress in the field of chronopharmacology and to introduce some of the exciting developments and prospects to a readership beyond the confines of the chronobiological cognoscenti. This volume is therefore aimed primarily at the pharmacologist - whether basic, applied, or clinical-who is not a specialist in chronobiology.
First multi-year cumulation covers six years: 1965-70.