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Books > Medicine > Other branches of medicine > Pharmacology > Medical toxicology

Human Toxicology of Chemical Mixtures (Hardcover, 2nd edition): Harold Zeliger Human Toxicology of Chemical Mixtures (Hardcover, 2nd edition)
Harold Zeliger
R8,458 Discovery Miles 84 580 Ships in 10 - 15 working days

In this important reference work, Zeliger catalogs the known effects of chemical mixtures

on the human body and also proposes a framework for understanding and predicting their

actions in terms of lipophile (fat soluble) / hydrophile (water soluble) interactions. The

author s focus is on illnesses that ensue following exposures to mixtures of chemicals

that cannot be attributed to any one component of the mixture.

In the first part the mechanisms of chemical absorption at a molecular and

macromolecular level are explained, as well as the body s methods of defending itself

against xenobiotic intrusion. Part II examines the sources of the chemicals discusssed,

looking at air and water pollution, food additives, pharmaceuticals, etc. Part III, which

includes numerous case studies, examines specific effects of particular mixtures on

particular body systems and organs and presents a theoretical framework for predicting

what the effects of uncharacterized mixtures might be. Part IV covers regulatory

requirements and the need to adjust recommended exposure levels for products

containing mixtures. It also contains recommendations on how to limit exposure to

mixtures in the products we use and on how to limit release of mixtures into the

environment.

Providing brief summaries of each mixture and its effects, Zeliger provides a

comprehensive reference, a jumping off point for professionals (with extensive chapter

bibliographies) and an introduction to the topic for those studying traditional toxicology.

Addressing many inadequately understood illnesses and conditions such as asthma,

infertility and cancer, it will also be of interest to health professionals, environmental

scientists and lawyers.

Presents a theoretical framework for predicting the effects of chemical mixtures

for which no specific data exists (this predictive aspect is important due to the

vast number of different potential chemical combinations - far too many to

comprehensively catalog).

A quick and convenient source of hard to come by data on the rapidly developing

field of chemical mixtures, for groups including chemists and engineers,

toxicologists, health professionals and environmental scientists.

New and updated material comprises over 30% of this timely new edition, which

includes the latest research data alongside an expanded introduction to the science

and art of predicting the toxicological properties of chemical mixtures."

Mercury Poisoning and Deep Faith (Paperback): Pamela Elizabeth Lacek Mercury Poisoning and Deep Faith (Paperback)
Pamela Elizabeth Lacek
R515 Discovery Miles 5 150 Ships in 10 - 15 working days

This is a 47-chapter non-fiction story about Mercury poisoning from my eight dental amalgams and one root canal. I had fillings since age eight at least. The World Health Organization states that 87% of Mercury poisoning in humans comes from their mouth. Amalgam fillings are 50-52% Mercury.
Childhood vaccinations with 'Thimersol;' a Mercury based derivative only add to the problem. They are becoming much more profuse now. Even flu shots use Mercury as a preservative. When I asked to have my root canal tooth pulled by an experienced dental surgeon, he said that the Mercury had leaked up my right sinus a great distance. This is the side that the root canal was on. I had an amalgam tattoo above the root canal too.
Nutrition and hand washing are the way to beat illness. My deep faith has helped me through much brutality, both physical and emotional. It's all documented. I'll close with what I believe and say, "God sees it all." This belief got me through everything.
I published this book because my deepest desire is to help others; they need not go through what I went through.
Dental Amalgam Mercury Syndrome International (DAMS)
Contact websites; www.dams.cc OR www.noamalgams.org
Telephone number: 1-800-311-6265
Andrew Hall-Cutler, PE, PhD
Telephone number: (425)-557-8299
Website: www.noamalgams.com Email: [email protected]
For incredible health naturally, contact www.achew.com
I bought my 'Pure Charge' machine from him.
Angie Spizzirri - health consultant, works using the most helpful ancient Egyptian dowsing also. She lives in Toronto, Ontario and can work long distance. Her telephone number is (416) 464-7463; Cell (416) 509-2148. She is incredible and I highly recommend her.
'Metagenics' products I sell to the clients of my business. I have become a partner to the 'Metagenics' business because I am a registered nurse who has a deep desire to help others. They have a branch that makes the products in Mississauga, Ontario. They produce the best natural vitamins, minerals, amino acids, essential fatty acids and high cholesterol healing natural medicine. Website: www.metagenics.com
I am a member of the 'Nikken' corporation and sell their products or help to make others a part of the business so that they get their products wholesale. They have the best in magnetic products, even mattresses. Their magnets are the highest quality. Magnets in a drug store or other stores don't get near the quality. Magnets heal the body from pain and are part of the earth's core; we need to bring them closer for benefits.
Their website is: www.nikken.com
I also am a member of 'Mannatech, ' you can be too. Their 'Ambrotose' is patented and is revolutionary in helping people. It is food also.
Website: www.mannatech.com
Cell Phone E.M.F. Harmonizer by 'BioPro. They last for the life of your cell phone. They are simple, round and go on the phone. They have been medically proven to prevent brain tumors'. I sell these for $40.00 Cdn.
Website: www.bioprotechnology.com

Venomous Snakes - Envenoming, Therapy (Hardcover, Revised): Jiri Valenta Venomous Snakes - Envenoming, Therapy (Hardcover, Revised)
Jiri Valenta
R5,699 R5,031 Discovery Miles 50 310 Save R668 (12%) Ships in 12 - 17 working days

This is a comprehensive monograph on the problems of intoxication incurred by snake venom. This publication is primarily intended for those at all levels of health care, for members of rescue teams, surgeries and emergency hospitals, as well as specialised workplaces and intensive care units. Providing didactic instructions for first aid and treatment procedures, information is also presented on venomous snakes, the fundaments of their morphology and behaviour, snakebite prevention, the composition of snake venom, symptoms of envenoming, plus first aid in the event of snakebite for non-professionals, travellers, terrain biologists, and breeders. This book features an updated alphabetical list of types and sub-types of all venomous snakes, including their home ranges, as well as a comprehensive index, list of abbreviations, glossary, and colour picture insert with one hundred photographs of venomous snakes.

Advances in Molecular Toxicology, Volume 4 (Paperback): James C. Fishbein Advances in Molecular Toxicology, Volume 4 (Paperback)
James C. Fishbein
R8,355 Discovery Miles 83 550 Ships in 10 - 15 working days

Advances in Molecular Toxicology features the latest advances in all of the subspecialties of the broad area of molecular toxicology. Toxicology is the study of poisons, and this series details the study of the molecular basis by which a vast array of agents encountered in the human environment and produced by the human body itself manifest themselves as toxins. Not strictly limited to documenting these examples, the series is also concerned with the complex web of chemical and biological events that give rise to toxin-induced symptoms and disease. The new technologies that are being harnessed to analyze and understand these events will also be reviewed by leading workers in the field. Advances in Molecular Toxicology will report progress in all aspects of these rapidly evolving molecular aspects of toxicology with a view toward detailed elucidation of both progress on the molecular level and on advances in technological approaches employed.

Developmental Neurotoxicity of PBDEs, Mechanisms & Implications (Paperback): Henrik llm, Birger Scholz Developmental Neurotoxicity of PBDEs, Mechanisms & Implications (Paperback)
Henrik llm, Birger Scholz
R1,313 Discovery Miles 13 130 Ships in 12 - 17 working days

We are constantly exposed to a plethora of different chemicals, the majority of which are mostly uncharacterised with respect to their biological properties. This book provides an in depth overview on known neurotoxicity mechanisms for a group of industrial chemicals known as polybrominated diphenyl ethers (PBDEs). Polybrominated diphenyl ethers (PBDEs) are ubiquitous environmental toxicants that have been found world-wide in a variety of biotas. This book reports and discusses the interesting and salient work published on the known and potential mechanisms behind the developmental neurotoxicity of PBDEs in the foremost used model organisms, mouse and rat.

Hayes' Handbook of Pesticide Toxicology (Hardcover, 3rd edition): Robert Krieger Hayes' Handbook of Pesticide Toxicology (Hardcover, 3rd edition)
Robert Krieger
R14,039 R12,905 Discovery Miles 129 050 Save R1,134 (8%) Ships in 12 - 17 working days

The "Handbook of Pesticide Toxicology" is a comprehensive, two-volume reference guide to the properties, effects, and regulation of pesticides that provides the latest and most complete information to researchers investigating the environmental, agricultural, veterinary, and human-health impacts of pesticide use. Written by international experts from academia, government, and the private sector, the "Handbook of Pesticide Toxicology" is an in-depth examination of critical issues related to the need for, use of, and nature of chemicals used in modern pest management. This updated 3e carries on the book s tradition of serving as the definitive reference on pesticide toxicology and recognizes the seminal contribution of Wayland J. Hayes, Jr., co-Editor of the first edition.
Feature: Presents a comprehensive look at all aspects of pesticide toxicology in one reference work.
Benefit: Saves researchers time in quickly accessing the very latest definitive details on toxicity of specific pesticides as opposed to searching through thousands of journal articles.

Feature: Clear exposition of hazard identification and dose response relationships in each chapter featuring pesticide agents and actions
Benefit: Connects the experimental laboratory results to real-life applications in human health, animal health and the environment.

Feature: All major classes of pesticide considered.
Benefit: Provides relevance to a wider variety of researchers who are conducting comparative work in pesticides or their health impacts.

Feature: Different routes of exposure critically evaluated.
Benefit: Connects the loop between exposure and harmful affects to those who are researching the affects of pesticides on humans or wildlife.
"

Inhibition of Angiogenesis by Potential Chemopreventive Agents (Paperback): Elisabeth Klenke Inhibition of Angiogenesis by Potential Chemopreventive Agents (Paperback)
Elisabeth Klenke
R1,584 Discovery Miles 15 840 Ships in 10 - 15 working days

A new human in vitro anti-angiogenesis assay was established and applied to identify novel angiopreventive agents. Subsequently, two chemopreventive compounds, xanthohumol (XN) from Humulus lupulus L. (hop) and sulforaphane (SFN), an isothiocyanate derived from cruciferous vegetables (Brassicaceae), were selected for detailed investigation of their angiopreventive potential and mechanisms involved in the inhibition of angiogenesis. Representative targets included effects at the transcriptional levels of pro-angiogenic factors, anti-gelatinolytic and anti-endothelial activity. In vivo, XN was shown to exhibit a strong anti-tumour potency on human breast cancer xenografts mediated by the inhibition of tumour-induced angiogenesis. These findings strongly suggest that XN and SFN represent attractive chemopreventive lead structures possessing a remarkable potential to prevent tumour development.

A Textbook Of Medical Chemistry And Toxicology (Hardcover): James W. Holland A Textbook Of Medical Chemistry And Toxicology (Hardcover)
James W. Holland
R1,815 Discovery Miles 18 150 Ships in 10 - 15 working days

This scarce antiquarian book is included in our special Legacy Reprint Series. In the interest of creating a more extensive selection of rare historical book reprints, we have chosen to reproduce this title even though it may possibly have occasional imperfections such as missing and blurred pages, missing text, poor pictures, markings, dark backgrounds and other reproduction issues beyond our control. Because this work is culturally important, we have made it available as a part of our commitment to protecting, preserving and promoting the world's literature.

Calomel in America - Mercurial Panacea, War, Song and Ghosts (Paperback, New): Richard M. Swiderski Calomel in America - Mercurial Panacea, War, Song and Ghosts (Paperback, New)
Richard M. Swiderski
R856 Discovery Miles 8 560 Ships in 10 - 15 working days

Formed as a word and a chemical compound in an culturally diverse Europe, calomel came to America as a solution to epidemics also imported. It grew into a primary gesture, both medical and commercial, of the healing professions. Opposition to its use, founded on experience with the effects of consuming it, took the form of song and satire that echoed faintly after the drug was forgotten.

Heart Rate Variability and Ultrafine Particle Exposures (Paperback): Timothy Mcauley Heart Rate Variability and Ultrafine Particle Exposures (Paperback)
Timothy Mcauley
R2,110 Discovery Miles 21 100 Ships in 10 - 15 working days
Drug Toxicity - New Research (Hardcover, Illustrated Ed): Cam E. Vellotis Drug Toxicity - New Research (Hardcover, Illustrated Ed)
Cam E. Vellotis
R3,123 Discovery Miles 31 230 Ships in 12 - 17 working days

The systemic effects of a drug that are related to the overall level of the medication in the bloodstream. Drug toxicity may occur with overdosage of a medication, accumulation of the drug in the body over time or the inability of the patients body to eliminate the drug. This book presents recent and important research in the field.

Lifetime Exposure to Arsenic in Drinking Water- Application to a Bladder Cancer Case-Control Study (Paperback, illustrated... Lifetime Exposure to Arsenic in Drinking Water- Application to a Bladder Cancer Case-Control Study (Paperback, illustrated edition)
Jaymie R. Meliker
R1,656 Discovery Miles 16 560 Ships in 10 - 15 working days

Ingestion of arsenic in drinking water has been linked with the risk of bladder cancer, however, questions remain about the dose-response relationships, ranges in induction-latency intervals, and whether there are critical lifetime exposure periods of heightened susceptibility. This book describes how individual- level estimates of arsenic exposure are reconstructed using newly developed Space-Time Information System technology, and offers methodological approaches for evaluating temporal dynamics in the relationship between arsenic exposure and bladder cancer. Spatial, temporal, and spatiotemporal variability are incorporated in the assessment of lifetime exposure to arsenic. Fluid and food consumption data are joined with mobility histories and arsenic concentrations to generate a detailed lifetime assessment of arsenic exposure. These exposure estimates will be used in a population-based bladder cancer case-control study nearing completion in southeastern Michigan. This work is directed to exposure scientists, environmental epidemiologists, health geographers, GIScientists, and others interested in the links between environment, human health, and spatial technology.

A Textbook Of Medical Chemistry And Toxicology (Paperback): James W. Holland A Textbook Of Medical Chemistry And Toxicology (Paperback)
James W. Holland
R1,456 Discovery Miles 14 560 Ships in 10 - 15 working days

This scarce antiquarian book is included in our special Legacy Reprint Series. In the interest of creating a more extensive selection of rare historical book reprints, we have chosen to reproduce this title even though it may possibly have occasional imperfections such as missing and blurred pages, missing text, poor pictures, markings, dark backgrounds and other reproduction issues beyond our control. Because this work is culturally important, we have made it available as a part of our commitment to protecting, preserving and promoting the world's literature.

Sunblood - I Lived to Tell the Story (Paperback): Leigha  Anastasia Von Micks Sunblood - I Lived to Tell the Story (Paperback)
Leigha Anastasia Von Micks
R751 Discovery Miles 7 510 Ships in 10 - 15 working days

If you had the chance to heal and live a journey of unimaginable proportions, would you? an odyssey, not unlike Homer's Odyssey in its journey into the fantastical, or the Iliad, which deals with the truth of war in its tragedy and scope. NDMA. A corporate by-product which launches a journey of epic and fantastical proportions, the poison of the NDMA creating a sensory psychic and empath with untold knowledge, a woman who had to become secluded from the world because of her ability to feel atomic energy in the form of people's diseases and the world's pain. never before lived that brings a new understanding that will change the perceptions of 8 billion people with regard to politics, economics, medicine, religion, the environment, law and war. would change the face of life on this planet, would you?

Nanotoxicology in Humans and the Environment (Hardcover, 1st ed. 2021): Jamie R. Lead, Shareen H. Doak, Martin J D Clift Nanotoxicology in Humans and the Environment (Hardcover, 1st ed. 2021)
Jamie R. Lead, Shareen H. Doak, Martin J D Clift
R3,822 Discovery Miles 38 220 Ships in 12 - 17 working days

The book covers the area of 'Nanotoxicology' but primarily from the point of view of nanotoxicology at the interface with other disciplines including human toxicology; environmental toxicology; characterization, dose and transformations; regulation; public and elite group perceptions; and interactions with innovation.Nanotoxicology in Humans and the Environment is written for researchers in nanotoxicology in academia, industry, government, and research students. Given the rapid development, the maturing of the discipline and its importance in current regulation and industry development (eg REACH, TSCA), the book is very timely.

Brain Development - Normal Processes and the Effects of Alcohol and Nicotine (Hardcover): Michael W. Miller Brain Development - Normal Processes and the Effects of Alcohol and Nicotine (Hardcover)
Michael W. Miller
R3,027 Discovery Miles 30 270 Ships in 10 - 15 working days

This is the first book about both normal development of the nervous system and how early exposure to alcohol and nicotine interferes with this development. The developing nervous system is highly dynamic and vulnerable to genetic and epigenetic factors that can be additive or synergistic. Disruption of normal brain development leads to an array of developmental disorders. One of the most common of these is mental retardation, the prime cause of which is prenatal exposure to alcohol. As chapters in this book show, alcohol has direct effects on the developing neural system and it affects genetic regulation. Another common neurotoxin is nicotine, and it is discussed in this book for three reasons: (1) the number of adolescents who smoke cigarettes is rising in some populations; (2) prenatal exposure to nicotine affects neurotransmitter systems that are critical for normal brain development and cognition; and (3) prenatal exposure to nicotine is often accompanied by prenatal exposure to alcohol.LThe mature brain is the culmination of an orderly sequence of the basic ontogenetic processes--cell proliferation, migration, differentiation, and death. Neural stem cells and progenitors proliferate in discrete sites; then, young neurons migrate long distances to their residences where they form neural networks. During this sequence many immature cells die, presumably eliminating unsuitable or non-competitive cells. Each process is regulated by genetic and environmental factors. When this regulation goes awry, a dysmorphic and dysfunctional brain results. Though this can be tragic in clinical settings, in experimental contexts it provides keen insight into normal brain development.LThe book isdivided into three parts. The first describes neural ontogeny in the normal brain. The second and third deal with the consequences of early exposure to alcohol and nicotine. Though there are similarities in the effects of these two toxins, there are also intriguing differences. The commonalities reflect the plasticity and resilience of the developing brain while the differences point to the targeted effects of the two toxins. Exploring these effects brings a richer appreciation of brain development. The book will be of interest to neuroscientists, developmental biologists, teratologists, pharmacologists, toxicologists, neurologists, neuropsychologists, and to their students and trainees.

Toxicology of Organophosphate and Carbamate Compounds (Hardcover): Ramesh C. Gupta Toxicology of Organophosphate and Carbamate Compounds (Hardcover)
Ramesh C. Gupta
R7,156 Discovery Miles 71 560 Ships in 10 - 15 working days

This text/reference book provides the most comprehensive coverage of anticholinesterase compounds (Organophosphates and Carbamates), which constitute the largest number of chemicals that are primarily used as insecticides in agriculture, industry, and around the home/garden. Some OPs (nerve agents) have been used in chemical warfare and terrorist attacks, while some OPs and CMs have been recommended as therapeutic agents in human medicine as well as in veterinary medicine. Many chemicals of both classes are extremely toxic and lack selectivity, thus their inadvertent/accidental use continues to pose a threat to human and animal health, aquatic systems and wildlife. These anticholinesterase agents produce a variety of toxicological effects in target and nontarget organs.
In light of this complexicity, this multi-authored book is written by the well known scientists from many countries. The book is organized into nine sections, with a total of 49 chapters, to provide in-depth knowledge on various aspects of OP and CM compounds, including their use, classification, mechanism-based toxicity, and prophylactic and therapeutic measurements. Several chapters are written with special emphasis to cover timely topics, such as chemical warfare agents, physiologically-based pharmacokinetic modeling, structure and function of cholinesterases, paraoxonase, carboxylesterases; developmental neurotoxicity, the intermediate syndrome, oxidative stress, endocrine disruption, and DNA damage/gene expression and carcinogenesis. Section-VI with 5 chapters is specifically devoted to risk assessment, and safety and regulatory guidelines for pesticides.
-Describes everything you need to know about Organophosphates and Carbamates
-Extensively covers pesticides, nerve agents, therapeutic drugs, and flame retardants
-Describes epidemiology of the world's major disasters involving Organophosphates and Carbamates
-Covers animal, human, aquatic, and wildlife toxicity of Anticholinesterases
-Insights into in-depth cholinergic and noncholinergic mechanisms of toxicity
-Describes recent advancements in cholinesterases, paraoxonases, carboxylesterases, oxidative stress, endocrine disruption, cardiac and pulmonary toxicity, and carcinogenesis
-Provides in vitro and in vivo models for neurotoxicity testing
-Integrates knowledge of studies in lab animals and humans
-Offers risk/safety assessment and national/international guidelines for permissible levels of pesticide residues
-Describes management of Anticholinesterase poisoning in humans

Some Traditional Herbal Medicines, Some Mycotoxins, Naphthalene and Styrene - IARC Monograph on the Carcinogenic Risks to... Some Traditional Herbal Medicines, Some Mycotoxins, Naphthalene and Styrene - IARC Monograph on the Carcinogenic Risks to Humans (Paperback)
The International Agency for Research on Cancer
R1,547 Discovery Miles 15 470 Ships in 10 - 15 working days

Traditional herbal medicines encompass an extremely diverse group of preparations that originate from many different cultures. In recent years, such products have become widely available commercially in developed countries, where mixtures prepared from medicinal plants have been marketed or uses that were never contemplated in the traditional healing systems from which they emerged. In many countries, herbal medicines are not subject to rigorous standards with respect to manufacturing, efficacy, quality and safety. For example, herbal remedies containing plant species of the genus Aristolochia and used in Europe for body weight loss have caused kidney disease and urothelial cancers and are now classified as carcinogenic to humans. This monograph evaluates the carcinogenic risks to humans posed by the use of some traditional herbal medicines, Fumonisin B1, and the industrial organic chemicals naphthalene and styrene, and provides an update of the data on the carcinogenicity of aflatoxins. An Annex to the volume describes fungal sources and formation of aflatoxins in foods and feeds, and discusses practical strategies for reduction of aflatoxin levels.

Non-Ionizing Radiation, Pt. 1: Static and Extremely Low-frequency (ELF) Electric and Magnetic Fields (Paperback): International... Non-Ionizing Radiation, Pt. 1: Static and Extremely Low-frequency (ELF) Electric and Magnetic Fields (Paperback)
International Agency for Research on Cancer
R1,492 Discovery Miles 14 920 Ships in 10 - 15 working days

This volume evaluates possible carcinogenic hazards from exposures to static and extremely low frequency (ELF) electric and magnetic fields. It is the first of two IARC Monographs volumes on various kinds of non-ionizing radiation. Extremely low frequency (ELF) magnetic field exposures result from proximity to electric power transmission lines, household wiring, and electric appliances and are in addition to the exposure that results from the earth's magnetic field. Overall, extremely low frequency magnetic fields were evaluated as possibly carcinogenic to humans (Group 2B). Static magnetic fields and static and extremely low frequency electric fields could not be classified as to carcinogenicity to humans (Group 3).

Poison Mysteries in History, Romance and Crime (1924) (Paperback): C.J.S. Thompson Poison Mysteries in History, Romance and Crime (1924) (Paperback)
C.J.S. Thompson
R1,130 Discovery Miles 11 300 Ships in 10 - 15 working days

A comprehensive history, full of delightful anecdotes, of the types, uses, and abuses of poison. Illustrated with photographs. Sample contents: Poisons used by ancient and primitive races; Superstitions connected with poisonous plants; Some classical poisons and their histories; The Italian school of poisoners; The mystery of Amy Robsart's death; Poisons in fiction; and poison mysteries, which are details of 23 criminal poisonings.

Zinc (Paperback): International Programme on Chemical Safety (IPCS) Zinc (Paperback)
International Programme on Chemical Safety (IPCS)
R1,292 Discovery Miles 12 920 Ships in 10 - 15 working days

Zinc is a common element in the natural environment. Apart from artificially reduced zinc metal, it exists in the divalent state Zn (II) in the environment and it is an essential element for most organisms. It is well known that zinc deficiency causes numerous effects in humans, including neurosensory changes, growth retardation and delayed wound healing, but most people obtain sufficient amounts of zinc from their diet to avoid these effects. On the other hand, it is reported that high doses of zinc cause gastrointestinal distress, nausea and diarrhoea.This book evaluates the risks to human health and the environment posed by exposures to zinc. Overall evaluation suggests that normal healthy individuals not exposed to zinc in the workplace are at potentially greater risk from the adverse effects associated with zinc deficiency than from those associated with normal environmental exposure to zinc because of its relatively low toxicity in humans and the limited sources of human exposure.

Biomarkers in Risk Assessment - Validity and Validation (Paperback): Who? Biomarkers in Risk Assessment - Validity and Validation (Paperback)
Who?; Ilo, Unep
R1,116 Discovery Miles 11 160 Ships in 10 - 15 working days

This publication seeks to provide a framework for selecting and validating biomarkers for risk assessment. Initial chapters consider the role of biomarkers in risk assessment and their validity. A biomarker is any substance, structure or process that can be measured in the body or its products, and influence or predict the incidence of outcome or disease. Biomarkers can be classified into markers of exposure, effect and susceptibility. If biomarkers are to contribute to environmental and occupational health risk assessments, they have to be relevant and valid. Relevance refers to the appropriateness of biomarkers to provide information on questions of interest and importance to public and environmental health authorities and other decision-makers. The validity of a biomarker is a function of intrinsic qualities of the biomarker and characteristics of the analytic procedures. Additionally, three broad categories of validity can be distinguished: measurement validity, internal study validity and external validity. Measurement validity is the degree to which a biomarker indicates what it purports to indicate. Internal study validity is the degree to which inferences drawn from a study actually pertain to study subjects and are true. External validity is the extent to which findings of a study can be generalized to apply to other populations. Subsequent chapters examine the validation of specific types of biomarkers and cross-species comparability. Supporting the main text are four extensive appendices covering the following subjects: 1. Biomarkers of exposure and effect for carcinogenicity 2. Biomarkers of exposure and effect for non-carcinogenic end-points 3. Measurement of drug metabolizing enzyme polymorphisms as indicators of susceptibility 4. Validation of biomarkers for environmental health research and risk assessment

Arsenic and Arsenic Compounds (Paperback, 2nd Revised edition): Who?, Ipcs, World Health Organization Arsenic and Arsenic Compounds (Paperback, 2nd Revised edition)
Who?, Ipcs, World Health Organization
R2,710 Discovery Miles 27 100 Ships in 10 - 15 working days

This book evaluates the risks to human health and the environment posed by arsenic and arsenic compounds. Arsenic is widely distributed in the earth's crust and is emitted into the atmosphere by coal-fired power generation plants and volcanic activity. Inorganic arsenic of geological origin is found in groundwater, which is used as drinking-water in several parts of the world, e.g. Bangladesh. In these areas, drinking-water is the main source of arsenic intake, but elsewhere food is the principal source.

Principles for Evaluating Health Risks to Reproduction Associated with Exposure to Chemicals (Paperback): Who? Principles for Evaluating Health Risks to Reproduction Associated with Exposure to Chemicals (Paperback)
Who?; Ilo, Unep
R1,097 Discovery Miles 10 970 Ships in 10 - 15 working days

Intended as a tool for use by public health officials, research and regulatory scientists and risk managers, this publication seeks to provide a scientific framework for the use and interpretation of reproductive toxicity data from human and animal studies. It also discusses emerging methodology and testing strategy in reproductive toxicity. The text focuses on approaches to assessing reproductive toxicity in males and females, including sexual dysfunction and infertility, and many aspects of developmental toxicity (following both prenatal and postnatal exposure), from conception to sexual maturation. It is an overview of the major scientific principles underlying hazard identification, testing methods and risk assessment strategies in human reproductive toxicity. It also discusses the evaluation of reproductive toxicity data in the context of the extensive risk assessment methodology that has emerged over the past 10-15 years.

Some Antiviral and Antineoplastic Drugs and Other Pharmaceutical Agents - Iarc Monograph on the Carcinogenic Risks to Humans... Some Antiviral and Antineoplastic Drugs and Other Pharmaceutical Agents - Iarc Monograph on the Carcinogenic Risks to Humans (Paperback)
International Agency for Research on Cancer
R1,522 Discovery Miles 15 220 Ships in 10 - 15 working days

Evaluates the carcinogenic risks to humans posed by the use of four antiretroviral agents, four DNA topoisomerase II inhibitors used in the treatment of cancer, and an additional three pharmaceutical agents (hydroxyures, phenolphthalein, and vitamin K substances). The volume marks the first IARC evaluation of nucleoside analogs that act as antiviral agents. The evaluation responds in part to recent findings that zidovudine (AZT), an effective antiretroviral agent now being given to pregnant HIV-infected women to prevent maternal-to-fetal transmission of the virus, is a transplacental carcinogen in mice. The opening monograph evaluates the carcinogenicity to humans of the antiretroviral nucleoside analogs zidovudine (AZT), zalcitabine (ddC), and didanosine (ddI), and the antiherpesvirus drug aciclovir. Of these, aciclovir and didanosine could not be classified on the basis of available data. For zidovudine, transplacental administration to mice resulted in an increased incidence and multiplicity of lung and liver tumours and in an increased incidence of female reproductive tract tumours in one study, but not in another involving treatment at a lower dose.Despite observation of toxic effects in some studies of humans, human carcinogenicity data were judged to provide inadequate evidence of carcinogenicity in humans. Zidovudine was classified as possibly carcinogenic to humans. Similar weaknesses in human carcinogenicity data for zalcitabine, which consistently induces thymic lymphomas in mice, resulted in its classification as possibly carcinogenic to humans. The second monograph evaluates four DNA topoisomerase II inhibitors: etoposide, teniposide, mitoxantrone, and amsacrine. Of these, etoposide - one of the most widely used and effective cytotoxic drugs in combination therapy - was classified as probably carcinogenic to humans, and etoposide in combination with cisplatin and bleomycin was judged to be carcinogenic to humans. Teniposide was classified as probably carcinogenic to humans, and mitoxantrone and amsacrine were classified as possibly carcinogenic to humans. Of the three pharmaceutical agents evaluated in the final monograph, hydroxyurea, which is widely used in cancer treatment and, increasingly, in combination with didanosine in HIV infection, could not be classified.Phenolphthalein, a widely used laxative now being withdrawn from the market in many countries because of toxicological concerns, was classified as possibly carcinogenic. Vitamin K substances could not be classified on the basis of available evidence.

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