Cellular Response To The Genotoxic Insult: The Question Of Threshold For Genotoxic Carcinogens at Meripustak

Cellular Response To The Genotoxic Insult: The Question Of Threshold For Genotoxic Carcinogens

Books from same Author: Helmut Greim , Richard Albertini

Books from same Publisher: Royal Society Of Chemistry

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  • General Information  
    Author(s)Helmut Greim , Richard Albertini
    PublisherRoyal Society Of Chemistry
    ISBN9781849731775
    Pages334
    BindingHardback
    LanguageEnglish
    Publish YearMay 2012

    Description

    Royal Society Of Chemistry Cellular Response To The Genotoxic Insult: The Question Of Threshold For Genotoxic Carcinogens by Helmut Greim , Richard Albertini

    Genotoxic Carcinogens Can Lead To Dna Mutations With The Potential To Cause Cancer. Typically A Series Of Mutation Events Are Needed Before Malignancy Occurs So A Single Small Exposure May Not Result In Disease. Also Cells Have An Armoury Of Defence Mechanisms Which To A Degree Counter The Effects Of Mutagens. Distinguishing The Point At Which Exposure To A Carcinogen Increases Mutation Rates Beyond The Background Level Is Challenging. In Fact There Is Now General Agreement That For Genotoxic Carcinogens No Specific Threshold Can Be Identified. However Noaels (No Observed Adverse Effect Levels) May Be Used In The Process Of Establishing A Dose-Response Relationship. These Denote The Level Of Exposure At Which There Is No Significant Increase In Adverse Effects In The Exposed Population When Compared To An Appropriate Control. Such A Scientifically Defendable Threshold Allows Us To Propose Health Based Exposure Limits For Genotoxic Carcinogens. This Book Describes The Various Cellular Defence Mechanisms Individually And Explains How They Are Regulated. The Processes Covered Include Metabolic Inactivation Epigenetic Regulation Scavenging Mechanisms Dna-Repair And Apoptosis. It Also Considers Dose-Dependent Threshold Mechanisms Of Carcinogenesis And The Rate Limiting Parameters. Aimed At Graduate Level And Above The Book Discusses The Consequences Of Genotoxic Evaluation And Urges Readers To Question The Idea That Even Low Exposures Present A Cancer Risk.