Lipid Hydroperoxide Derived Modification Of Biomolecules
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Lipid Hydroperoxide Derived Modification Of Biomolecules
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Author : Yoji Kato
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-12-28
Lipid Hydroperoxide Derived Modification Of Biomolecules written by Yoji Kato and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-28 with Medical categories.
Lipid peroxidation is an important cellular process which can lead to detrimental effects if it is not regulated efficiently. Lipid hydroperoxide is formed in an initial step of lipid peroxidation. Lipid hydroperoxide is also known as a potential source of singlet oxygen. Harmful aldehydes are formed when the lipid hydroperoxide is degraded. The formed aldehyde has high reactivity against thiol or amine moieties. Therefore, it could act as a signaling molecule, which might induce the changing of gears inside a cell. Recent studies have shown that lipid hydroperoxide or a slightly modified product of the lipid hydroperoxide reacts with biomolecules such as proteins and aminophospholipids, which leads to formation of amide-type adducts. Amide-type adducts could be one of markers for oxidative stress and could also be an important player in some diseases. In this book, the chemistry and biochemistry of lipid hydroperoxide along with their conjugates with biomolecules are described.
Reactive Species Detection In Biology
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Author : Frederick A. Villamena
language : en
Publisher: Elsevier
Release Date : 2016-10-23
Reactive Species Detection In Biology written by Frederick A. Villamena and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-23 with Science categories.
Reactive Species Detection in Biology: From Fluorescence to Electron Paramagnetic Resonance Spectroscopy discusses the reactive oxygen species that have been implicated in the pathogenesis of various diseases, presenting theories, chemistries, methodologies, and various applications for the detection of reactive species in biological systems, both in-vitro and in-vivo. Techniques covered include fluorescence, high performance chromatography, mass spectrometry, immunochemistry, and electron paramagnetic resonance spectroscopy. Probe design and development are also reviewed in order to advance new approaches in radical detection through synthesis, computations, or experimental applications. Reviews all current advances in radical detection Emphasizes chemical structures and reaction schemes fundamental to radical detection and identification Describes the uses, advantages, and disadvantages of various probe designs Examines new approaches to radical probe development
Measuring Oxidants And Oxidative Stress In Biological Systems
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Author : Lawrence J. Berliner
language : en
Publisher: Springer Nature
Release Date : 2020-08-08
Measuring Oxidants And Oxidative Stress In Biological Systems written by Lawrence J. Berliner and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-08 with Science categories.
This book describes the methods of analysis and determination of oxidants and oxidative stress in biological systems. Reviews and protocols on select methods of analysis of ROS, RNS, oxygen, redox status, and oxidative stress in biological systems are described in detail. It is an essential resource for both novices and experts in the field of oxidant and oxidative stress biology.
Lipid Peroxidation In Biological Systems
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Author : Alex Sevanian
language : en
Publisher: The American Oil Chemists Society
Release Date : 1988
Lipid Peroxidation In Biological Systems written by Alex Sevanian and has been published by The American Oil Chemists Society this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Science categories.
Specialised Membrane Domains Of Plasmodesmata Plant Intercellular Nanopores
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Author : Jens Tilsner
language : en
Publisher: Frontiers E-books
Release Date : 2014-12-17
Specialised Membrane Domains Of Plasmodesmata Plant Intercellular Nanopores written by Jens Tilsner and has been published by Frontiers E-books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-12-17 with Botany categories.
Plasmodesmata (PD) are plant-specific intercellular nanopores defined by specialised domains of the plasma membrane (PM) and the endoplasmic reticulum (ER), both of which contain unique proteins, and probably different lipid compositions than the surrounding bulk membranes. The PD membranes form concentric tubules with a minimal outer diameter of only 50 nm, and the central ER strand constricted to ~10-15 nm, representing one of the narrowest stable membrane tubules in nature. This unique membrane architecture poses many biophysical, structural and functional questions. PM continuity across PD raises the question as to how a locally confined membrane site is established and maintained at PD. There is increasing evidence that the PM within PD may be enriched in membrane ‘rafts’ or TET web domains. Lipid rafts often function as signalling platforms, in line with the emerging view of PD as central players in plant defense responses. Lipid-lipid immiscibility could also provide a mechanism for membrane sub- compartmentalisation at PD. Intricate connections of the PM to the wall and the underlying cytoskeleton and ER may anchor the specialised domains locally. The ER within PD is even more strongly modified. Its extreme curvature suggests that it is stabilised by densely packed proteins, potentially members of the reticulon family that tubulate the cortical ER. The diameter of the constricted ER within PD is similar to membrane stalks in dynamin-mediated membrane fission during endocytosis and may need to be stabilised against spontaneous rupture. The function of this extreme membrane constriction, and the reasons why the ER is connected between plant cells remain unknown. Whilst the technically challenging search for the protein components of PD is ongoing, there has been significant recent progress in research on biological membranes that could benefit our understanding of PD function. With this Research Topic, we therefore aim to bring together researchers in the PD field and those in related areas, such as membrane biophysics, membrane composition and fluidity, protein-lipid interactions, lateral membrane heterogeneity, lipid rafts, membrane curvature, and membrane fusion/fission. We wish to address questions such as: - What mechanisms restrict lateral mobility of proteins and lipids along the PD membranes? - How can specific proteins be targeted to and turned over from membrane domains with restricted lateral access? - What elements (lipids, proteins, membrane curvature, packing order, thickness etc.) may contribute to the identity of PD membranes? - How do the structural and functional features of PD compare to other ER-PM contact sites? - How is the high curvature of the PD ER stabilised and what are possible functions of such a tightly constricted membrane tubule? - Do PD need to be prevented from spontaneous collapse and sealing? - What technologies are available to address these questions that can underpin PD research? We welcome interested individuals to contribute their expertise and develop new hypotheses on the particular biological and biophysical questions posed by PD. We are particularly looking for articles (Original Research Articles, Technical Advances and State-of-the-Art reviews) that would expand on or challenge current perceptions of PD and stimulate discussion.
Biomarkers In Environmental And Human Health Biomonitoring
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Author : Ritu Mishra
language : en
Publisher: Elsevier
Release Date : 2024-06-05
Biomarkers In Environmental And Human Health Biomonitoring written by Ritu Mishra and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-06-05 with Medical categories.
Biomarkers in Environmental and Human Health Biomonitoring: An Integrated Perspective provides a holistic view of the biomonitoring of environmental degradation, accumulated toxicity, and associated human health concerns. The book incorporates theoretical and practical aspects of the biomonitoring of environmental pollution and the health surveillance of ecological communities using samples from living organisms which are analyzed for contaminants and toxin levels. In the first half, the book provides a general overview if the different types of biomarkers, their significance as bioindicators for contaminants and detection of toxicity, as well as how they can be utilized in the restoration of degraded ecosystems. The second half of the book discusses molecular biomarkers and how they are used as diagnostic and prognostic tools for pollution monitoring. It also reviews analytical tools used to validate the biomarkers in the detection and monitoring of pollution and disease. Finally, the book delves into how novel approaches like genetic ecotoxicology; Big Data, and artificial intelligence calculates the potential consequences of environmental pollution on the ecosystems and on human health. Covers the fundamentals, types, significance, and limitations of biomarkers Examines various types of plants, animals, and secondary metabolites in identifying and monitoring toxicity in different ecosystems and potential impacts on health Reviews biomarker-based and bioinformatic tools in the detection and monitoring of environmental pollution and associated human health
Radiation Induced And Oxidative Dna Damages
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Author : Antonio Monari
language : en
Publisher: Frontiers Media SA
Release Date : 2015-10-02
Radiation Induced And Oxidative Dna Damages written by Antonio Monari and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-10-02 with Chemistry categories.
DNA stores and passes the genetic information of almost all living organisms. Its molecular structure and their intramolecular interactions are particularly suitable to maximize stability against oxidative stress and UV-light absorption. Yet the protection and repair strategies are still error-prone: DNA lesions are produced, including the most complex and highly mutagenic ones. An important threat to DNA stability comes from photosensitization, i.e. from the dramatic multiplication of radiation-induced defects mediated by the presence of organic or organometallic dyes compared to the direct exposure to UVA radiation. Moreover, the photo-induced production of singlet oxygen generates an extremely high oxidative stress on DNA that, in vivo, normally results in extended cellular apoptosis. Elucidating the processes leading to DNA damages, from the production of a simple radical entity to deleterious lesions, as well as the opportunities of repair by devoted enzymes, is a cornerstone towards the development of more efficient protection strategies. Sensitization and selective production of DNA lesions can also be exploited to induce the selective apoptosis of cancer cells upon exposition to radiation or to oxidative stress, for instance in the field of photodynamic therapy. The importance and relevance of the field is witnessed by the impressive amount of high-level papers dealing with this complex subject, and notably tackling the structural elucidation of DNA and DNA-drug adducts, the mechanisms of formation of DNA lesions (including the precise detection of the final lesion products), as well as the influence of the lesions on the DNA stability and dynamics and the consequences on the ease of repair. Due to the complexity of the field lying at the frontiers between chemistry, physics and biology, multidisciplinary strategies allying modeling and experience are needed. This topic aims at giving an extended overview of the current research in the domain, with fundamental contribution from the leading groups in the field of DNA reactivity, structural characterization, photo-chemistry and photo-physics, as well as repair mechanism. It will therefore be a fundamental guide for scientists wanting to address the field of DNA lesion and repair, but also more generally for researchers working in rational drug design or in the development of biomarkers and medical imaging techniques
Oxidative Stress Biomarkers And Antioxidant Protocols
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Author : Donald Armstrong
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-02-04
Oxidative Stress Biomarkers And Antioxidant Protocols written by Donald Armstrong and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-02-04 with Science categories.
The first protocols book, Free Radical and Antioxidant Protocols (1) was published in late 1998. Sections were divided into three parts, covering selected biochemical techniques for measuring oxidative stress, antioxidant (AOX) activity, and combined applications. In choosing the 40 methods to be included in that book, I realized there were considerably more of equal value than that which we could have presented in a single volume. To produce a comprehensive resource, this book and a third are being compiled to expand coverage of the field. A summary of papers (2) published on this important subject emphasizes the continuing rapid growth in oxidative stress investigations relating to our understanding of biochemical reactions, their relevance to pathophysiological mechanisms, how disease may arise, and how therapeutic intervention may be achieved(3). Although there is some overlap between the categories, the ana- sis shown below illustrates where current studies are concentrated and are almost evenly distributed between free radicals and AOX. Over the last 4 yr, there has been a 55% increase in the number of papers published in the area.
Omega 3 Fatty Acids
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Author : Mahabaleshwar V. Hegde
language : en
Publisher: Humana Press
Release Date : 2016-09-15
Omega 3 Fatty Acids written by Mahabaleshwar V. Hegde and has been published by Humana Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-15 with Medical categories.
This volume argues for the importance of essential nutrients in our diet. Over the last two decades there has been an explosion of research on the relationship of Omega-3 fatty acids and the importance of antioxidants to human health. Expert authors discuss the importance of a diet rich in Omega-3 Fatty acids for successful human growth and development and for the prevention of disease. Chapters highlight their contribution to the prevention and amelioration of a wide range of conditions such as heart disease, diabetes, arthritis, cancer, obesity, mental health and bone health. An indispensable text designed for nutritionists, dietitians, clinicians and health related professionals, Omega-3 Fatty Acids: Keys to Nutritional Health presents a comprehensive assessment of the current knowledge about the nutritional effects of Omega-3 fatty acids and their delivery in foods.
Impact Of Lipid Peroxidation On The Physiology And Pathophysiology Of Cell Membranes
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Author : Angel Catalá
language : en
Publisher: Frontiers Media SA
Release Date : 2017-01-17
Impact Of Lipid Peroxidation On The Physiology And Pathophysiology Of Cell Membranes written by Angel Catalá and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-17 with Electronic book categories.
The general process of lipid peroxidation consists of three stages: initiation, propagation, and termination. The initiation phase of lipid peroxidation includes hydrogen atom abstraction. Several species can abstract the first hydrogen atom and include the radicals: hydroxyl, alkoxyl, peroxyl, and possibly HO* 2. The membrane lipids, mainly phospholipids, containing polyunsaturated fatty acids are predominantly susceptible to peroxidation because abstraction from a methylene group of a hydrogen atom, which contains only one electron, leaves at the back an unpaired electron on the carbon. The initial reaction of *OH with polyunsaturated fatty acids produces a lipid radical (L*), which in turn reacts with molecular oxygen to form a lipid hydroperoxide (LOOH). Further, the LOOH formed can suffer reductive cleavage by reduced metals, such as Fe++, producing lipid alkoxyl radical (LO*). Peroxidation of lipids can disturb the assembly of the membrane, causing changes in fluidity and permeability, alterations of ion transport and inhibition of metabolic processes. In addition, LOOH can break down, frequently in the presence of reduced metals or ascorbate, to reactive aldehyde products, including malondialdehyde (MDA), 4-hydroxy-2-nonenal (HNE), 4-hydroxy-2-hexenal (4-HHE) and acrolein. Lipid peroxidation is one of the major outcomes of free radical-mediated injury to tissue mainly because it can greatly alter the physicochemical properties of membrane lipid bilayers, resulting in severe cellular dysfunction. In addition, a variety of lipid by-products are produced as a consequence of lipid peroxidation, some of which can exert beneficial biological effects under normal physiological conditions. Intensive research performed over the last decades have also revealed that by-products of lipid peroxidation are also involved in cellular signalling and transduction pathways under physiological conditions, and regulate a variety of cellular functions, including normal aging. In the present collection of articles, both aspects (adverse and benefitial) of lipid peroxidation are illustrated in different biological paradigms. We expect this eBook may encourage readers to expand the current knowledge on the complexity of physiological and pathophysiological roles of lipid peroxidation.