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Polymer and Biopolymer Analysis and Characterization
Interest in vanadium has increased in recent decades because of its presence in suspended particles resulting from fuel combustion, and because of an increased exposure in population such as soldiers, civilian populations near oil wells and in Iraq, and in the Gulf War. One of its sources is the residual oil fuel ashes and vocanic activity. This important book deals with the biological effects on the organism.
Progress in Neurodegeneration
This book highlights the role of some metals which induce oxidative stress and imbalances in the neurodegenerative diseases such as Alzheimer disease, Parkinson disease, Amyotrophic Lateral Sclerosis, Huntington Disease, and other dementias. The chemistry and biochemistry of metals induced-oxidative stress, protein damage is first described, followed by the evidence for a pathological role of oxidative stress in these disease states. It is tempting to speculate that free radical oxygen chemistry contributes to pathogenesis in all these conditions, though it is as yet undetermined what types of oxidative changes occur early in the disease, and what types are secondary manifestations of neuronal degeneration. Finally the authors review different metals to describe their specific role in the different pathologies.
Dopamine
The chemical basis of human emotions has been an exciting aspect in biology. The "feel-good chemical" dopamine (DA) is a hormone and also a neurotransmitter, which performs a critical role in reward and movement control in the brain. DA also performs multiple other functions outside the brain. Regulating unrelated critical biological functions makes this chemical a vital factor for sustaining life in both health and disease. Dopamine - Health and Disease is an endeavour with an objective to understand and appreciate the biological functions of DA in human wellbeing and its potential utility in biomedical research. This effort will supplement scientific and non-scientific communities in stimulating a critical understanding of the biological purpose of "ticklish" DA, which eventually supports the human relentless effort to reduce the burden of disease. As the most exciting molecule,dopamine directly impacts day-to-day life. Anyone who has an eye for health and disease-related concepts will find this book a good read.
Melatonin Pretreatment Effect in a Parkinson Disease Experimental Model Induced by the Inhalation of Manganese in Mice
Parkinson disease (PD) is characterized by dopaminergic neuron loss of the substantia nigra compacta (SNc) and motor alterations. Here, we used the experimental model of inhalation of the mixture of manganese chloride (MnCl2) and manganese acetate Mn (OAc)3 for inducing PD. This model causes bilateral and progressive degeneration of the SNc dopaminergic neurons. Melatonin has antioxidant properties and it has been suggested that it contributes to the protective effect in neurodegenerative diseases. Therefore, we aimed to determine whether melatonin pretreatment protects against the Mn-induced alterations. Before Mn inhalation, three groups were trained for motor performance (1. control group...
Neural Synapse Research Trends
Chemical synapses are specialised junctions through which cells of the nervous system signal to one another and to non-neuronal cells such as muscles or glands. A chemical synapse between a motor neuron and a muscle cell is called a neuromuscular junction. Chemical synapses allow the neurons of the central nervous system to form interconnected neural circuits. They are thus crucial to the biological computations that underlie perception and thought. They also provide the means through which the nervous system connects to and controls the other systems of the body. The human brain contains a huge number of chemical synapses, with young children having about 1016 synapses (10,000 trillion[1].). This number declines with age, stabilising by adulthood. Estimates for an adult vary from 1015 to 5 × 1015 synapses (1,000 to 5,000 trillion).
Sex Hormones in Neurodegenerative Processes and Diseases
The book provides chapters on sex hormones and their modulation in neurodegenerative processes and pathologies, from basic molecular mechanisms, physiology, gender differences, to neuroprotection and clinical aspects for potential novel pharmacotherapy approaches. The book contains 14 chapters written by authors from various biomedical professions, from basic researchers in biology and physiology to medicine and veterinary medicine, pharmacologists, psychiatrist, etc. Chapters sum up the past and current knowledge on sex hormones, representing original new insights into their role in brain functioning, mental disorders and neurodegenerative diseases. The book is written for a broad range of audience, from biomedical students to highly profiled medical specialists and biomedical researchers, helping them to expand their knowledge on sex hormones in neurodegenerative processes and opening new questions for further investigation.
Alzheimer-Like Cell Alterations After Vanadium Pentoxide Inhalation
Vanadium (V), a widely distributed transition metal, has been considered toxic, which depends on the valence of the compound. V pentoxide (V2O5) is considered the most harmful. Its long-term exposure produces neurotoxicity. Mice exposed to inhaled V2O5 displayed less tubulin+ in testicular cells and dendritic spines loss, cell death, and CA1 neuropil modifications, considered as the result of V interaction with the cytoskeleton, which made us suppose that V2O5 inhalation could initiate CA1 cell alterations comparable to what happen in the brains of Alzheimer disease (AD) patients. This study intends to demonstrate pyramidal CA1 cytoskeletal changes in rats which inhaled V2O5. Twenty rats wer...
Parkinson’s Disease - Animal Models, Current Therapies and Clinical Trials
Despite being described about 200 years ago, the pathophysiology of Parkinson’s disease (PD) is not well understood due to its complex etiology and heterogeneity of symptoms and progression. Animal models provide a great opportunity to follow the progression of neurodegeneration and to screen potent therapeutic molecules, knowledge of which can be critical for different levels of clinical trials. Contemporary health technologies are coming in handy to accelerate the pace of developing novel and refined therapeutic strategies for PD. This book, Parkinson’s Disease - Animal Models, Current Therapies and Clinical Trials, provides a comprehensive overview of PD, presenting information on animal models of PD and contemporary therapeutic strategies, health technologies, clinical trials, and their influence on the quality of life of patients with PD.
Neurotoxicity
Neurotoxins are natural or chemical compounds that can disturb the neurological system of mammals. The neurotoxic potential of a neurotoxin is a consequence that may occur if tissue concentrations surpass a particular threshold. Chemicals disrupt adult brain function by interfering with the structure and function of various neuronal pathways, circuits, and systems in diverse ways. Neurotoxicity - New Advances provides updated information about neurotoxicity and neurotoxic chemicals including nanomaterials and pesticides. It also discusses prevention and treatment strategies. This book is an instructive and valuable guide to understanding neurotoxicity and identifying neurotoxicity mechanisms and neurotoxic disorders.
Behavioral and Cytological Differences Between Two Parkinson,Äôs Disease Experimental Models
The knowledge about the biochemical and behavioral changes in humans with PD has allowed proposing animal models for its study; however, the results obtained so far have been heterogeneous. Recently, we established a novel PD model in rodents by manganese chloride (MnCl2) and manganese acetate (Mn (OAc)3) mixture inhalation. After inhaling, the rodents presented bilateral loss of SNc dopaminergic neurons. Later, we conclude that the alterations are of dopamine origin since L-DOPA reverted the alterations. After six months, SNc significantly reduced the number of cells, and striatal dopamine content decreased by 71%. The animals had postural instability, action tremor, and akinesia; these sym...
