Interactions Between Infections, Nutrients and Xenobiotics


Book Description

During recent years there have been several incidents where symptoms of disease have been linked to consumption of food contaminated by chemical substances (e.g. TCDD). Furthermore, outbreaks of infections in food producing animals have attracted major attention with regards to the safety for consumers (e.g., BSE and influenza in chicken). As shown for several xenobiotics in an increasing number of experimental studies, even low-dose xenobiotic exposure may impair immune function over time, as well as microorganism virulence, resulting in more severe infectious diseases and possibly other diseases as well. Also, during ongoing infection, xenobiotic uptake and distribution is often changed resulting in increased toxic insult to the host. The interactions between infectious agents, nutrients, and xenobiotics have thus become a developing concern and new avenue of research in food toxicology, as well as in food-born diseases. From a health perspective, in the risk assessment of xenobiotics in our food and environment, synergistic effects between microorganisms, nutrients, and xenobiotics will have to be considered. Such effects may otherwise gradually change the disease panorama in society. The author of this report is senior food toxicologist at the National Food Administration, Uppsala, Sweden. He is PhD and Adjunct Professor in Experimental Infectious Diseases at the Faculty of Medicine, Uppsala University, Sweden, and a great part of his scientific production has been devoted to the theme covered in this report.




Handbook of Drug-Nutrient Interactions


Book Description

Handbook of Drug-Nutrient Interactions, Second Edition is an essential new work that provides a scientific look behind many drug-nutrient interactions, examines their relevance, offers recommendations, and suggests research questions to be explored. In the five years since publication of the first edition of the Handbook of Drug-Nutrient Interactions new perspectives have emerged and new data have been generated on the subject matter. Providing both the scientific basis and clinical relevance with appropriate recommendations for many interactions, the topic of drug-nutrient interactions is significant for clinicians and researchers alike. For clinicians in particular, the book offers a guide for understanding, identifying or predicting, and ultimately preventing or managing drug-nutrient interactions to optimize patient care. Divided into six sections all chapters have been revised or are new to this edition. Chapters balance the most technical information with practical discussions and include outlines that reflect the content; discussion questions that can guide the reader to the critical areas covered in each chapter, complete definitions of terms with the abbreviation fully defined and consistent use of terms between chapters. The editors have performed an outstanding service to clinical pharmacology and pharmaco-nutrition by bringing together a multi-disciplinary group of authors. Handbook of Drug-Nutrient Interactions, Second Edition is a comprehensive up-to-date text for the total management of patients on drug and/or nutrition therapy but also an insight into the recent developments in drug-nutrition interactions which will act as a reliable reference for clinicians and students for many years to come.




Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids


Book Description

This volume is the newest release in the authoritative series of quantitative estimates of nutrient intakes to be used for planning and assessing diets for healthy people. Dietary Reference Intakes (DRIs) is the newest framework for an expanded approach developed by U.S. and Canadian scientists. This book discusses in detail the role of vitamin C, vitamin E, selenium, and the carotenoids in human physiology and health. For each nutrient the committee presents what is known about how it functions in the human body, which factors may affect how it works, and how the nutrient may be related to chronic disease. Dietary Reference Intakes provides reference intakes, such as Recommended Dietary Allowances (RDAs), for use in planning nutritionally adequate diets for different groups based on age and gender, along with a new reference intake, the Tolerable Upper Intake Level (UL), designed to assist an individual in knowing how much is "too much" of a nutrient.




Environmental Chemicals, the Human Microbiome, and Health Risk


Book Description

A great number of diverse microorganisms inhabit the human body and are collectively referred to as the human microbiome. Until recently, the role of the human microbiome in maintaining human health was not fully appreciated. Today, however, research is beginning to elucidate associations between perturbations in the human microbiome and human disease and the factors that might be responsible for the perturbations. Studies have indicated that the human microbiome could be affected by environmental chemicals or could modulate exposure to environmental chemicals. Environmental Chemicals, the Human Microbiome, and Health Risk presents a research strategy to improve our understanding of the interactions between environmental chemicals and the human microbiome and the implications of those interactions for human health risk. This report identifies barriers to such research and opportunities for collaboration, highlights key aspects of the human microbiome and its relation to health, describes potential interactions between environmental chemicals and the human microbiome, reviews the risk-assessment framework and reasons for incorporating chemicalâ€"microbiome interactions.




Fundamentals of Toxicologic Pathology


Book Description

Toxicologic pathology integrates toxicology and the disciplines within it (such as biochemistry, pharmacodynamics and risk assessment) to pathology and its related disciplines (such as physiology, microbiology, immunology, and molecular biology). Fundamentals of Toxicologic Pathology Second Edition updates the information presented in the first edition, including five entirely new chapters addressing basic concepts in toxicologic pathology, along with color photomicrographs that show examples of specific toxicant-induced diseases in animals. The current edition also includes comparative information that will prove a valuable resource to practitioners, including diagnostic pathologists and toxicologists. - 25% brand new information, fully revised throughout - New chapters: Veterinary Diagnostic Toxicologic Pathology; Clinical Pathology; Nomenclature: Terminology for Morphologic Alterations; Techniques in Toxicologic Pathology - New color photomicrographs detailing specific toxicant-induced diseases in animals - Mechanistic information integrated from both toxicology and pathology discussing basic mechanisms of toxic injury and morphologic expression at the subcellular, cellular, and tissue levels




Health Impacts of Developmental Exposure to Environmental Chemicals


Book Description

This book provides concise and cutting-edge studies on threats resulting from exposure to environmental chemicals that can affect human health and development, with a particular emphasis on the DOHaD concept. The book is divided into five main parts, the first of which includes an introduction to the impacts of developmental exposure to environmental chemicals and historical perspectives, while the second focuses on how environmental chemicals can affect human organs, including neurodevelopment, immune functions, etc. In turn, the third part addresses the characteristics of specific chemicals and their effects on human health and development, while the fourth part provides a basis for future studies by highlighting the latest innovations in toxicology, remaining challenges, and promising strategies in children’s environmental health research, as well as ideas on how to bridge the gap between research evidence and practical policymaking. The fifth and last part outlines further research directions and related policymaking aspects. Health Impacts of Developmental Exposure to Environmental Chemicals will appeal to young and veteran researchers, students, and physicians (especially gynecologists and pediatricians) who are seeking comprehensive information on how children’s health can be affected by harmful chemicals and other environmental toxicants.




Hormones and Resistance


Book Description

7 If so, the individual members of each class thus identified could then be subjected to a more profound pharmacokinetic analysis. In other words, we had to determine first which hormone protects against which drug, before we could explore how it did this. We had to know first that a hormone has adaptive value before we could ask whether this is due to a syntoxic or a catatoxic mechanism. Such observations, as the fact that an indomethacin-induced intestinal ulcer can be prevented by ethylestrenol, orthat cortisol aggravates certain infections, reveal nothing about how these hormones work; but only findings of this type can tell us where further research would be rewarding. Of course, scientists can rarely identify by direct observation the tbings that they are looking for; most of the time they have to be guided by indirect indices. The ebernist often first detects a compound, or even a particular functional group in its molecule, by inference from a color reaction, a revealing X-ray diffraction pattern or the formation of a characteristic precipitate. The physician must first suspect the presence of a microbe through certain clinical signs and symptoms before he can verify his diagnosis by looking for a particular organism. It is perhaps not too daring to hope that in our first efforts to clarify the role of hormones in resistance, simple, directly visible indicators might also serve us best.










Silent Winter


Book Description

Silent Winter is about the silent spread of toxic chemicals in our daily lives and their role in the growing prevalence of illnesses such as cancer, chronic fatigue, diabetes, asthma digestive issues, depression, dementia, and others. The scientific evidence about chronic illness and toxic chemicals is withheld from us through stunningly elaborate efforts so that business can continue as usual. Approximately 45% of the adult US population now has at least one chronic illness, and chronic illness is commonly caused by chronic exposure to toxic chemicals. We are often told that these diseases are a result of our lifestyle or our genes. We rarely hear that chronic illness is on the rise as a result of toxic chemicals in consumer products and throughout our environment. Industry does not want to change, so it is forcing us to change on an evolutionary level to deal with the onslaught of chemicals in our daily lives. When we cannot keep up and get ill, we are sold chemical solutions to make us feel better. But individuals and families dealing with chronic illness often know or suspect that toxic chemicals have played a role in the demise of their health. The author also shows how the problem is covered up at a societal level by obscuring what we know, and how discussion of possible solutions is silenced by manipulating the marketplace. Millions of human lives are being muted as a result of chronic illness. Finally, the author discusses our way out of this mess. In the 1962 book Silent Spring, Rachel Carson dedicated one short chapter to the anticipated human health impacts from toxic chemicals. That chapter seeded the present work, Silent Winter, which was written after sixty additional years of scientific research and widespread human exposure to a variety of toxic chemicals. In Our Stolen Future, 1996, Theo Colborn et al. warned of the potential dangers of hormone disrupting chemicals on human health. Nearly another 25 years have passed since that writing. Silent Winter reveals the observed impacts of these hormone disrupting chemicals on human health.