Metabolic Polymorphisms and Susceptibility to Cancer

Metabolic Polymorphisms and Susceptibility to Cancer PDF

Author: Paolo Vineis

Publisher:

Published: 1999

Total Pages: 530

ISBN-13:

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The study of interactions between genes and environmental exposures ha s expanded considerably in recent years. Highly penetrant genes that a re involved in familial cancer have been identified, but are likely to account for a relatively small proportion of total cancers. Other pre disposing genes have low penetrance, resulting in a moderate increase in the risk of specific cancers, but are widespread in the general pop ulation. This is the case for so-called metabolic polymorphisms. Scien tific interest in metabolic polymorphisms is based on the possibility of identifying subgroups of the population which are at elevated risk of developing environmentally-induced cancer. However, such studies ra ise a series of problems that are methodological - related to the stud y design and analysis - and ethical - related to the practical use tha t can be made of genetic information. This volume deals thoroughly wit h such problems.

Genetic Polymorphism and cancer susceptibility

Genetic Polymorphism and cancer susceptibility PDF

Author: Aga Syed Sameer

Publisher: Springer Nature

Published: 2021-04-22

Total Pages: 353

ISBN-13: 9813366990

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This book discusses the role of genetic polymorphism in susceptibility to cancers. The book explores the understanding of differences between the genetic polymorphisms and mutations.It reviews the mechanisms underlying the effect of polymorphism in genes encoding proteins that play an essential role in metabolism, signal transduction, cell cycle, and DNA repair mechanisms. Further, it investigates various techniques that are used for analyzing the genetic polymorphisms. The book contains many chapters which summarize the importance of genetic information obtained from polymorphism-based pharmaco-genetic tests to predict better drug response and life-threatening adverse reactions to chemotherapeutic agents, help in understanding of the impact of SNPs on gene function, and gives overview of the different SNP databases for examination. This book, therefore, serves as an essential guidebook for independent researchers as well as institutions working in this specialised field.

Cancer Prevention

Cancer Prevention PDF

Author: H.-J. Senn

Publisher: Springer Science & Business Media

Published: 2007-05-26

Total Pages: 243

ISBN-13: 3540376968

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This volume contains the main proceedings of the fourth international conference on "Cancer Prevention 2006," which was held during February 16–18, 2006, in St. Gallen, Switzerland. Written by international experts in the field, the book comprises a comprehensive update on the most recent developments in the upsurging fields of molecular biology and cancer genetics and their interactions with clinical epidemiology and cancer prevention at various levels.

Genetic Susceptibility to Cancer

Genetic Susceptibility to Cancer PDF

Author: Seymour Garte

Publisher: Springer Science & Business Media

Published: 2013-03-09

Total Pages: 189

ISBN-13: 1461549892

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Despite recent progress in many areas of treatment and control, cancer remains a frightening threat to everyone. While scientists have known for decades that the majority of human cancers are caused by environmental agents such as radiation and the chemicals in cigarette smoke, not everyone who smokes gets lung cancer. Furthermore, many people who assiduously avoid all possible risk from smoking, diet, and pollution still succumb to some form of cancer later in life. Does this mean that there is an element of blind chance in the underlying mechanisms of human carcinogenesis? To what extent do genetic influences play a role in determining the cancer risk of individuals? A number of `cancer families', in which several closely related individuals have suffered from various specific forms of cancer, have been studied by genetic epidemiologists. However, for the majority of cancer cases, little or no discernible genetic influence or family history is found. Recent research has discovered that for many of these `sporadic' (non-familial) cancer cases, defects or aberrations in certain metabolic genes not previously associated with genetic cancer risk may contribute to either causing the disease or at least increasing the chances of developing cancer. It is therefore possible that much of what has previously passed for `bad luck' may turn out to be a new type of `bad genes'. Genetic Susceptibility to Cancer explains that this new idea of `bad genes' may contain an unexpected positive side. The carcinogenic effects of these metabolic genes, unlike those of the oncogenes and tumor suppressor genes that are responsible for the inherited cancer syndromes, can potentially be overcome or nullified. Genetic Susceptibility to Cancer will provide a valuable reference for health professionals, researchers, clinicians and biomedical scientists who are interested in the current thinking in this critically important area of cancer management.

Genetic Polymorphisms in AH Receptor and Cytochrome P450 Drug-metabolizing Enzymes in Relation to Estradiol Metabolism and Breast Cancer Susceptibility

Genetic Polymorphisms in AH Receptor and Cytochrome P450 Drug-metabolizing Enzymes in Relation to Estradiol Metabolism and Breast Cancer Susceptibility PDF

Author: Maria Shuk Mun Lam

Publisher:

Published: 2000

Total Pages: 0

ISBN-13:

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Bioactivation of environmental procarcinogens and prolonged exposure to 17ß-estradiol and catechol estrogens have been implicated in the etiology of mammary carcinogenesis. Endogenous 17ß-estradiol is oxidized to catechol estrogens by cytochrome P450 CYP1A2 and CYP1B1 enzymes which are transcriptionally regulated by the AH receptor. These enzymes are also involved in the bioactivation of numerous environmental procarcinogens such as benzo['a']pyrene. Consequently, those genetic polymorphisms in 'CYP1A2, CYP1B1' and 'AHR' that result in changes of enzyme or receptor function may affect 17ß-estradiol clearance and metabolic activation of procarcinogens. I genotyped two populations for a total of 7 polymorphisms in the 'AHR, CYP1A2' and ' CYP1B1' genes to examine whether these gene polymorphisms modify estrogen metabolism (Project 1) and breast cancer susceptibility (Project 2). Data of our estrogen metabolism study (Project 1) suggest that the 'AHR ' 554 polymorphism is related to alterations in 17ß-estradiol metabolism. Results of our Quebec French Canadian breast cancer case-control study (Project 2) indicate that the 'AHR' 554, 'CYP1A2*1F, CYP1B1*3' and 'CYP1B1*4' polymorphisms may modify breast cancer susceptibility.

How Tobacco Smoke Causes Disease

How Tobacco Smoke Causes Disease PDF

Author: United States. Public Health Service. Office of the Surgeon General

Publisher:

Published: 2010

Total Pages: 728

ISBN-13:

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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.

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