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Author: Robert Langenbach
Publisher: Springer Science & Business Media
ISBN: 146844400X
Category : Medical
Languages : en
Pages : 680
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Book Description
The Symposium on Organ and Species Specificity in Chemical Carcinogenesis was held March 1981 in Raleigh, North Carolina. Dr. James Miller concluded this Symposium with these remarks: "Without a doubt all of us would agree this has been a very successful symposium in illustrating a very wide range of chemical, stereochemical, biochemical, metabolic, molecular, and biological factors in chemical carcinogenesis. I think it is noteworthy that many of the discussions have dealt with pharmacodynamic, or toxicodynamic, factors that can influence the biological activities of the extremely wide range of structures that we choose to call chemical carcinogens. I sincerely hope that after this symposium everyone here will realize the very great need we have for further information on these agents in the species we profess to be working for, the human species. We badly need an adequate data base on human organs, human tissues, human cells, human subcellular preparations, and human body fluids. I don't think we can rely on extrapolations of data on chemical carcinogenesis from experimental animals to humans, no matter how sophisticated or plausible these extrapolations may seem, until we know far more about chemical carcinogenesis in humans. Now, I'd like to add a somewhat personal note. As many of you know, my wife and I have shared a joint career of some 40 years in this field, and I'd like to emphasize in these closing remarks the factor of youth.
Author: Robert Langenbach
Publisher: Springer Science & Business Media
ISBN: 146844400X
Category : Medical
Languages : en
Pages : 680
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Book Description
The Symposium on Organ and Species Specificity in Chemical Carcinogenesis was held March 1981 in Raleigh, North Carolina. Dr. James Miller concluded this Symposium with these remarks: "Without a doubt all of us would agree this has been a very successful symposium in illustrating a very wide range of chemical, stereochemical, biochemical, metabolic, molecular, and biological factors in chemical carcinogenesis. I think it is noteworthy that many of the discussions have dealt with pharmacodynamic, or toxicodynamic, factors that can influence the biological activities of the extremely wide range of structures that we choose to call chemical carcinogens. I sincerely hope that after this symposium everyone here will realize the very great need we have for further information on these agents in the species we profess to be working for, the human species. We badly need an adequate data base on human organs, human tissues, human cells, human subcellular preparations, and human body fluids. I don't think we can rely on extrapolations of data on chemical carcinogenesis from experimental animals to humans, no matter how sophisticated or plausible these extrapolations may seem, until we know far more about chemical carcinogenesis in humans. Now, I'd like to add a somewhat personal note. As many of you know, my wife and I have shared a joint career of some 40 years in this field, and I'd like to emphasize in these closing remarks the factor of youth.
Author: Michael P Waalkes
Publisher: CRC Press
ISBN: 1439805490
Category : Medical
Languages : en
Pages : 478
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Book Description
Carcinogens, like chemicals with other toxic hazards, often produce adverse effects only in specific organs or tissues. The factors determining whether a chemical induces cancer in an organ range from simple toxicokinetics to complex phenomena such as expression or lack of expression of specific genes.; This volume examines the site-specific factor
Author: Trevor M. Penning
Publisher: Springer Science & Business Media
ISBN: 1617379956
Category : Medical
Languages : en
Pages : 447
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Book Description
This volume will provide a contemporary account of advances in chemical carcinogenesis. It will promote the view that it is chemical alteration of the DNA that is a route cause of many cancers. The multi-stage model of chemical carcinogenesis, exposure to major classes of human carcinogens and their mode-of-action will be a focal point. The balance between metabolic activation to form biological reactive intermediates and their detoxification, ensuing DNA-lesions and their repair will be profiled. It will describe the chemical changes that occur in DNA that result from endogenous insults including epigenetic changes that lead to gene silencing. It will describe major mechanisms of mutagenesis, affects on tumor suppressor genes and proto-oncogenes, and how cell-cycle check points can be by-passed by the "stealth-like" properties of chemical carcinogens. Environmental agents that can promote tumor formation will be discussed. The monograph will have wide appeal as a knowledge base for graduate students, post-doctoral fellows and faculty interested in this aspect of cancer causation and research.
Author: Elizabeth K. Weisburger
Publisher: Springer Science & Business Media
ISBN: 9400925263
Category : Medical
Languages : en
Pages : 210
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Book Description
but also the possibility of intervention in specific stages. In Human behavior, including stress and other factors, plays an important role in neoplasia, although too little is known addition, variables which affect cancer development as well on the reasons for such development. Carcinogens, which as some endogenous factors can be better delineated help initiate the neoplastic process, may be either synthetic through such investigations. The topics of this volume encompass premalignant non or naturally-occurring. Cancer causation may be ascribed to invasive lesions, species-specific aspects of carcinogenicity, certain chemicals, physical agents, radioactive materials, viruses, parasites, the genetic make-up of the organism, and radiation, viruses, a quantum theory of carinogenesis, onco bacteria. Humans, eumetazoan animals and vascular plants genes, and selected environmental carcinogens. are susceptible to the first six groups of cancer causes, whe reas the last group, bacteria, seems to affect only vascular plants. Neoplastic development may begin with impairment ofJmdy defenses by a toxic material (carcinogen) which acts as an initiator, followed by promotion and progression to an overt neoplastic state. Investigation of these processes Series Editor Volume Editor allows not only a better insight into the mechanism of action Hans E. Kaiser Elizabeth K. Weisburger vii ACKNOWLEDGEMENT Inspiration and encouragement for this wide ranging project on cancer distribution and dissemination from a comparative biological and clinical point of view, was given by my late friend E. H. Krokowski.
Author: Alecsandru Ioan Baba
Publisher:
ISBN: 9789732714577
Category : Electronic books
Languages : en
Pages : 787
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Book Description
Author: United States. Public Health Service. Office of the Surgeon General
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 728
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Book Description
This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309053919
Category : Nature
Languages : en
Pages : 434
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Book Description
Despite increasing knowledge of human nutrition, the dietary contribution to cancer remains a troubling question. Carcinogens and Anticarcinogens assembles the best available information on the magnitude of potential cancer riskâ€"and potential anticarcinogenic effectâ€"from naturally occurring chemicals compared with risk from synthetic chemical constituents. The committee draws important conclusions about diet and cancer, including the carcinogenic role of excess calories and fat, the anticarcinogenic benefit of fiber and other substances, and the impact of food additive regulation. The book offers recommendations for epidemiological and diet research. Carcinogens and Anticarcinogens provides a readable overview of issues and addresses critical questions: Does diet contribute to an appreciable proportion of human cancer? Are there significant interactions between carcinogens and anticarcinogens in the diet? The volume discusses the mechanisms of carcinogenic and anticarcinogenic properties and considers whether techniques used to evaluate the carcinogenic potential of synthetics can be used with naturally occurring chemicals. The committee provides criteria for prioritizing the vast number of substances that need to be tested. Carcinogens and Anticarcinogens clarifies the issues and sets the direction for further investigations into diet and cancer. This volume will be of interest to anyone involved in food and health issues: policymakers, regulators, researchers, nutrition professionals, and health advocates.
Author: Carey N. Pope
Publisher: Academic Press
ISBN: 0128136022
Category : Medical
Languages : en
Pages : 644
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Book Description
An Introduction to Interdisciplinary Toxicology: From Molecules to Man integrates the various aspects of toxicology, from "simple” molecular systems, to complex human communities, with expertise from a spectrum of interacting disciplines. Chapters are written by specialists within a given subject, such as a chemical engineer, nutritional scientist, or a microbiologist, so subjects are clearly explained and discussed within the toxicology context. Many chapters are comparative across species so that students in ecotoxicology learn mammalian toxicology and vice versa. Specific citations, further reading, study questions, and other learning features are also included. The book allows students to concurrently learn concepts in both biomedical and environmental toxicology fields, thus better equipping them for the many career opportunities toxicology provides. This book will also be useful to those wishing to reference how disciplines interact within the broad field of toxicology. Covers major topics and newer areas in toxicology, including nanotoxicology, Tox21, epigenetic toxicology, and organ-specific toxicity Includes a variety of perspectives to give a complete understanding of toxicology Written by specialists within each subject area, e.g., a chemical engineer, to ensure concepts are clearly explained
Author: Yusaku Tagashira
Publisher: Springer
ISBN:
Category : Medical
Languages : en
Pages : 200
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Book Description
This book is one of a GANN Monograph on Cancer Research series and is based on a Japanese Cancer Association-sponsored symposium entitled "Multiplicity of Chemical Carcinogen-Activating Enzymes· with Particular Emphasis on Cytochrome P-450" which was held in Tokyo on November 21, 1983. The principal role of microsomal cytochrome P-450 in the metabolic activation of various chemical carcinogens in animal cells has been well established. The activated chemical carcinogens induce mutations of the cells, which is an essential part of the initiation of chemical carcinogenesis. Since microsomal cytochrome P-450 in various animal tissues includes multiple molecular species with different substrate specificities and different responses to chemical inducers, knowledge of the molecular and catalytic properties and the inducibilities of those cytochrome P-450 forms is surely a most important base from which to elucidate the mechanism of chemical carcinogenesis. The focus of the symposium was this area of molecular diversity and inducibility of microsomal cytochrome P-450 in animal tissues. The mechanism of activation of various types of chemical carcinogens by cytochrome P-450 and related enzymes was another main topic. The editors, who were also the symposium organizers, hope these summaries of current research in this field in Japan will stimulate future development of studies on the mechanism of chemical carcinogenesis.
Author: Ernest H.Y. Chu
Publisher: Springer Science & Business Media
ISBN: 1461323991
Category : Science
Languages : en
Pages : 852
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Book Description
During the early 1930s, when I was a graduate student and later a post-doctoral researcher at the National Research Council for the University of Wisconsin at Madison, we had the opportunity to get acquainted with many graduate students from China who were sent to the University for training in modern basic sciences as well as social sciences. The University of Wisconsin continues to graduate a large number of Chinese students. Economic conditions in the 1930s were very precarious for the United States and other parts of the world. Many of us students grew closer together because we were living on similarly tight budgets. As a matter of fact, we subleased a part of our apartment in Madison to some Chinese graduate students. This was a very nice opportunity for us to learn about the scientific and cultural back ground of our Chinese friends. Many of them came from the interior of China and had had very little opportunity to become acquainted with people from a western culture. Living with these students was a very pleasant and educational experience which gave us a good pic ture of the cultural life and educational system of China at that time--an intimate picture that one normally would not see without travelling in that country.
