Download or read book Thyroid Hormone Disruption and Neurodevelopment written by Noriyuki Koibuchi and published by Springer. This book was released on 2016-11-11 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thyroid hormone plays an important role in development and functional maintenance in the central nervous system. Deficiency of thyroid hormone during fetal and early postnatal life induces abnormal development known as cretinism in humans. However, the molecular mechanism of thyroid hormone action has not yet been fully understood. Thyroid hormone action in the brain may be disrupted under various pathological conditions. In addition, environmental factors including endocrine-disrupting chemicals and bacterial endotoxins may disrupt thyroid hormone action in brain, causing abnormal brain development and functional disruption. This is a first book to comprehensively describe the effect of thyroid hormone disruption in the central nervous system. The first section deals with the disruption of thyroid hormone action at the molecular level. First the authors provide a summary of the possible molecular mechanisms of thyroid hormone action in the brain, then they discuss several factors that may disrupt thyroid hormone action. In the second section, animal models to study thyroid hormone action will be introduced. An interesting character of thyroid hormone deficiency is that, without thyroid hormone, the thyroid hormone receptor may act as a “repressor” of gene expression, causing more severe consequence than those of thyroid hormone receptor knockout animals. Thus, several different kind of animal models may be used to clarify the role of thyroid hormone and its receptor in the brain. In the third section, human studies on thyroid disease and neurodevelopment will be introduced. Although endemic cretinism induced by iodine deficiency and sporadic cretinism by various thyroid mutation are well known, the pathophysiological mechanisms that create each abnormal phenotype are not fully understood.
Download or read book Thyroid Hormone in Brain and Brain Cells written by Frédéric Flamant and published by Frontiers Media SA. This book was released on 2016-01-21 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thyroid hormone signaling has been known for a long time to be required for proper neurodevelopment and the maintenance of cognitive functions in the adult brain. As thyroid hormone excess or deficiency is usually well handled by clinicians, research dedicated to the neural function of thyroid hormone, have not been a priority within the field. This is changing mainly for two reasons. First, new genetic diseases have been discovered, altering thyroid hormone signaling in brain (THRA, MCT8, SBP2), with neurodevelopmental consequences which are currently incurable. Second, there is a growing concern that exposition of the general population to environmental chemicals able to interfere with thyroid hormone signaling compromises children neurodevelopment or induces central disorders in adults. Finally thyroid hormone is acting directly on gene transcription, by binding nuclear receptors, and therefore is an interesting entry point to identify genetic programs controlling brain development and function. Reaching a broad understanding of the multiple processes involving thyroid hormone in brain is a tremendous task which will necessitate a multidisciplinary approach: animal genetics, molecular biology, brain imaging, developmental biology, genomics, etc... This topic will be the occasion to combine recent contributions in the field and to identify priorities for future investigations. Due to devastating consequences of congenital hypothyroidism, the neurodevelopmental consequences of altered thyroid hormone signaling have been extensively studied over the years. The discovery of new genetic diseases, the concern about the possible neurotoxicity of environmental thyroid hormone disruptors, recently renewed the interest for an important research field. This Ebook gathers reviews and original data from experts in various disciplines. It provides a broad view of ongoing research and outlines key issues for future investigation.
Download or read book Endocrine Disruptors Brain and Behavior written by Heather B. Patisaul and published by Oxford University Press. This book was released on 2017-04-10 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our world and bodies are becoming increasingly polluted with chemicals capable of interfering with our hormones and thus, possibly, our present and future neural and mental health. As authors Heather Patisaul and Scott Belcher outline, there is a large lack of data and evidence in this causal relationship, which begs a need for further study to accelerate progress in the endocrinology and neuroendocrinology fields. Endocrine Disruptors, Brain, and Behavior focuses on if and how these chemicals, known as endocrine disrupting compounds (EDCs), affect the development and function of the brain and might be contributing to neural disorders rapidly rising in prevalence. The book provides an overall synthesis of the EDC field, including its historical roots, major hypotheses, key findings, and research gaps. The authors explain why even the concept of endocrine disruption is controversial in some circles, how differing definitions of endocrine disruption and what constitutes an "adverse" outcome on the brain shape public policy, and where the current capacity by different stakeholders (industry, academia, regulatory agencies) to evaluate chemicals for safety in a regulatory context begins and ends. The book concludes with suggestions for future research needs and a summary of emerging technology which might prove capable of more effectively evaluating existing and emerging chemicals for endocrine disrupting properties. As such, it provides the context for interdisciplinary and innovative input from a broad spectrum of fields, including those well-schooled in neuroscience, evolutionary biology, brain, behavior, sex differences, and neuroendocrinology.
Download or read book Thyroid Hormones and Brain Development written by Gilman D. Grave and published by . This book was released on 1977 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Losing Our Minds written by Barbara Demeneix and published by Oxford University Press, USA. This book was released on 2014 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exponential increases in neurodevelopmental disorders implicate both genetic causes and environmental factors. Flame-retardants, pesticides, plasticizers, and other every-day products contain chemicals shown to affect thyroid hormone signaling, which if disrupted can result in significant impairment to IQ. Across entire populations, such effects spell large-scale social and economic consequences. In this book Barbara Demeneix suggests what can and must be done to halt and reverse this disturbing trend.
Download or read book A Multispecies Investigation of Thyroid Hormone Disruption written by Kyla Marie Walter and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thyroid hormones (THs) are essential for the proper development, growth and function of several organ systems, including the nervous, cardiovascular, and musculoskeletal systems. THs also contribute to homeostatic processes throughout life such as energy balance, thermoregulation, and endocrine regulation. Many environmental chemicals are suspected to disrupt the regulation of circulating TH concentrations and/or alter normal TH signaling. Thus, TH disruption is widely postulated as a mechanism by which environmental chemicals may cause adverse physiological outcomes. However, several gaps in our understanding of TH action and TH disruption have limited the development of predictive endpoints to screen chemicals for TH disruption. The five chapters contained herein investigate the use of two alternative models for studying TH disruption: larval zebrafish (Danio rerio) and housecats with naturally occurring hyperthyroidism. Zebrafish have been proposed as a promising model for studying TH-dependent mechanisms of neurodevelopment, screening chemicals for TH disrupting activity, and elucidating the adverse outcome pathways by which TH-disrupting chemical interfere with neurodevelopment. In Chapters 2-4, I characterized the impact of TH disruption in larval zebrafish. Several endpoints exhibited sensitivity to TH disruption including mRNA expression of core TH signaling genes, teratology, photomotor swimming behavior, and oligodendrocyte numbers in the spinal cord. These findings have significant implications for adapting zebrafish as a model for chemical screening and mechanistic studies of TH disrupting chemicals. In Chapter 5, I investigated the association between exposure to polychlorinated biphenyls (PCBs) and polybrominated diphenyl ether (PBDEs), two chemical families suspected to cause TH disruption, and the development of feline hyperthyroidism. I demonstrated that the sum total PBDE concentrations in our feline samples were approximately 50 times greater than concentrations previously reported in the human population from a geographically similar area, and I identified four PBDE congeners (BDE17, BDE100, BDE47, and BDE49) and five PCB congeners (PCB131, PCB153, PCB174, PCB180, and PCB196) with significantly higher concentrations in hyperthyroid cats compared to control cats. Domestic housecats, with their elevated exposure to PBDEs, may serve as sentinels for the adverse health effects associated with exposure to these environmental pollutants.
Download or read book Thyroid and Heart written by Giorgio Iervasi and published by Springer Nature. This book was released on 2020-03-19 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, several scientific papers have highlighted the role of the thyroid system in cardioprotection, and several clinical studies – including multicenter studies – have identified the role of thyroid hormones (TH) in the development and progression of cardiovascular disease, making an update of TH and heart relationship both necessary and timely. This second edition of Thyroid and Heart failure provides a careful and updated review of the experimental, clinical and epidemiological results in the field of TH and heart failure, with a particular focus on the translational - bench to bedside - significance of the obtained results. It discusses topics such as the molecular, structural, functional, cellular and histological cardiac changes; the reversibility of these changes with TH replacement therapy; the systemic effects – kidney, hormonal pathways systems, brain, muscle, etc – of altered TH metabolism in HF, as well as the clinical and prognostic implications. The section devoted to the potential therapeutic treatments has been expanded. Thanks to its translational approach to this highly complex subject, the book will be of interest to a broad readership, including cardiologists, endocrinologists and internists.
Download or read book Neurotoxicology written by G. Jean Harry and published by CRC Press. This book was released on 2016-04-19 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition presents an integrated approach to neurotoxicology, the study of organisms' responses to changes in their environment and how interruption of the flow of information by chemical exposure causes a wide range of effects - from learning deficits, sensory disturbances in the extremities, and muscle weakness to seizures and signs simila
Download or read book Health Impacts of Developmental Exposure to Environmental Chemicals written by Reiko Kishi and published by Springer Nature. This book was released on 2019-12-13 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Thyroid Hormones and Brain Development written by Gilman D. Grave and published by . This book was released on with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book From Neurons to Neighborhoods written by National Research Council and published by National Academies Press. This book was released on 2000-11-13 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: How we raise young children is one of today's most highly personalized and sharply politicized issues, in part because each of us can claim some level of "expertise." The debate has intensified as discoveries about our development-in the womb and in the first months and years-have reached the popular media. How can we use our burgeoning knowledge to assure the well-being of all young children, for their own sake as well as for the sake of our nation? Drawing from new findings, this book presents important conclusions about nature-versus-nurture, the impact of being born into a working family, the effect of politics on programs for children, the costs and benefits of intervention, and other issues. The committee issues a series of challenges to decision makers regarding the quality of child care, issues of racial and ethnic diversity, the integration of children's cognitive and emotional development, and more. Authoritative yet accessible, From Neurons to Neighborhoods presents the evidence about "brain wiring" and how kids learn to speak, think, and regulate their behavior. It examines the effect of the climate-family, child care, community-within which the child grows.
Download or read book Application of Systematic Review Methods in an Overall Strategy for Evaluating Low Dose Toxicity from Endocrine Active Chemicals written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-08-14 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: To safeguard public health, the US Environmental Protection Agency (EPA) must keep abreast of new scientific information and emerging technologies so that it can apply them to regulatory decision-making. For decades the agency has dealt with questions about what animal-testing data to use to make predictions about human health hazards, how to perform dose-response extrapolations, how to identify and protect susceptible subpopulations, and how to address uncertainties. As alternatives to traditional toxicity testing have emerged, the agency has been faced with additional questions about how to incorporate data from such tests into its chemical assessments and whether such tests can replace some traditional testing methods. Endocrine active chemicals (EACs) have raised concerns that traditional toxicity-testing protocols might be inadequate to identify all potential hazards to human health because they have the ability to modulate normal hormone function, and small alterations in hormone concentrations, particularly during sensitive life stages, can have lasting and significant effects. To address concerns about potential human health effects from EACs at low doses, this report develops a strategy to evaluate the evidence for such low-dose effects.
Download or read book Transition of Care written by M. Polak and published by Karger Medical and Scientific Publishers. This book was released on 2018-06-11 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pediatricians face many questions and challenges during patients’ transition from childhood to adulthood. Chronic diseases justify long-term medical, psychological, educational, and social management. The establishment of networks with adult endocrinologists is, therefore, very important to achieving optimal conditions for a successful transition period. In this book, leading experts discuss major public health issues such as diabetes and obesity. They also review genetic diseases, including Turner syndrome and congenital adrenal hyperplasia. All clinical cases are presented in a focused way to highlight any issues which might be discussed by the doctor with patients and family. Psychological approaches are debated as are proposals for defining specific tools to encourage autonomy during this life period. This book is a valuable tool and will be helpful in answering many questions for endocrinologists, adult and pediatric, dedicated to the long-term management of patients with chronic diseases.
Download or read book Handbook of Developmental Neurotoxicology written by William Slikker Jr. and published by Academic Press. This book was released on 2018-01-04 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Developmental Neurotoxicology, Second Edition, provides a comprehensive view of the fundamental aspects of neurodevelopment, the pathways and agents that affect them, relevant clinical syndromes, and risk assessment procedures for developmental neurotoxicants. The editors and chapter authors are internationally recognized experts whose collaboration heralds a remarkable advance in the field, bridging developmental neuroscience with the principles of neurotoxicology. The book features eight new chapters with newly recruited authors, making it an essential text for students and professionals in toxicology, neurotoxicology, developmental biology, pharmacology, and neuroscience. Presents a comprehensive, up-to-date resource on developmental neurotoxicology with updated chapters from the first edition Contains new chapters that focus on subjects recent to the field Includes well-illustrated material, with diagrams, charts, and tables Contains compelling case studies and chapters written by world experts
Download or read book Iodine and the Brain written by G. Robert Delong and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of a conference held at the National Institutes of Health in Bethesda on March 21-23. 1988. jointly sponsored by the International Council for Control of Iodine Deficiency Disorders (ICCIDD) and the Fogarty International Center of the National Institutes of Health. Several themes converged to make this meeting timely. The first is an increasing awareness of iodine deficiency disorders as a world-wide problem of public health and a preventable cause of mental deficiency. and as a subject of scientific effort. Increased interest in these problems owes a great deal to accessibility to remote and under developed areas of the world where iodine deficiency persists. As with any subject. greater scrutiny yields unexpected complexity and interest. It is true that provision of iodine. typically as iodized salt, is the necessary and sufficient preventative for iodine deficiency disorders. without including endemic cretinism. This provision is a governmental, economic and social problem. Apart from this, however, the scientific and medical problem of iodine deficiency and its effect on brain development and function is one of great interest and importance for developmental neurology and psychology. Even though the specific preventative agent is known, we do not totally understand the neurobiological questions raised.
Download or read book Endemic Cretinism written by John Dennison and published by Springer Science & Business Media. This book was released on 2011-09-25 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Responding to a renewed interest in the growing problem of iodine deficiency worldwide, Drs. Charles Oxnard and Peter Obendorf, along with experienced translator and anatomist John Dennison, take a fresh look at the classic text, Der endemische Kretinismus, published in 1936 by Springer. Translated here for the first time into English, this landmark text will be a welcome resource for researchers confronting the problem of iodine deficiency. Oxnard and Obendorf point out that there is very little detailed knowledge or numerical data on cretinism available in the English-speaking world. In addition, highly-renowned Professor Basil S. Hetzel, recently-retired World Health Organization Chairman of the International Council for Control of Iodine Deficiency Disorders, published in 2009 with Dr Chen Zu-pei on the resurgence of iodine deficiency in China. Indeed, throughout the entire developing world there may be as many as two billion people at risk to iodine deficiency; perhaps three quarters of a billion have goiter, and ten million may be cretins. Even in developed countries, iodine deficiency is re-emerging (as in New South Wales in 19% of children) with the result of significantly reduced numbers of gifted children (though this is not cretinism per se). Certain to be of significant interest to a wide range of researchers, health providers and professionals, including government health administrators, this English translation of Endemic Cretinism is a major contribution to the literature.
Download or read book Thyroid Hormone Dependency of Developing Brain written by Ann-Charlotte Granholm and published by . This book was released on 1984 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
