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A dynamic interplay between membranes and the cytoskeleton critical for cell development and signaling

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889193233 Year: Pages: 80 DOI: 10.3389/978-2-88919-323-3 Language: English
Publisher: Frontiers Media SA
Subject: Botany --- Science (General)
Added to DOAB on : 2016-02-05 17:24:33
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Various cellular processes underlying plant development and response to environmental cues rely on a dynamic interplay between membranes and the cytoskeleton, e.g. vesicle and organelle trafficking, endocytosis, exocytosis, and signal transduction. In recent years, significant progress in the understanding of such interplay has been achieved and several critical links between membranes and the cytoskeleton have been characterized. As an example, recent work has clarified how auxin promotes the reorganization of cortical actin filaments by the activation of Rho GTPase pathways, and how such reorganization in turn locally modifies endocytosis and/or exocytosis and directs asymmetric distribution of PIN family of auxin transporters. Another recent achievement is the characterization of the Rho- and microtubule-driven mechanism by which the cell wall architecture is established. In particular, the elegant work by Oda and Fukuda (Science 337 p.1333, 2012) provides evidence that secondary wall patterning in xylem vessel primarily relies on two processes: a local activation of the plant Rho GTPase ROP11 and a mutual, MIDD1-mediated, inhibitory interaction between active ROP domains and cortical microtubules. Additional examples include recent genetic evidence that microtubule and actin filament interacting/regulatory proteins, such as MAP65-1 and capping protein, function as transducers of membrane lipid signaling into changes in cytoskeleton dynamics and organization. This Research Topic aims at collecting a comprehensive set of articles dealing with cellular processes involving membrane-cytoskeleton interactions. Its scope extends beyond the specific fields defined by the above examples and includes intracellular trafficking, host-pathogen interactions, response to biotic and abiotic stresses and hormonal regulation of growth. We hope that this Research Topic will also highlight critical questions that need to be addressed in the future. We welcomed Original Research Articles, Technical/Methodological Advances (e.g. analysis of cytoskeleton dynamics close to membranes), Reviews and Mini Reviews that can expand our understanding of how and why membranes and the cytoskeleton interact.

Marine Lipids 2017

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ISBN: 9783038427995 9783038428008 Year: Pages: VIII, 160
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Education
Added to DOAB on : 2018-04-17 13:04:57
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Marine organisms are a well-known source of lipids with high nutritional value, such as n-3 fatty acids (e.g., 20:5 and 22:6), but also possess bioactive properties (e.g., polar lipids as glycolipids and phospholipids). Polar lipids are considered high added value bioactive molecules with health promoting effects, and with potential applications in food, feed, and pharmaceutical industries. Although some polar lipids of marine organisms are known to have functional properties (e.g., anti-inflammatory, anti-proliferative, antioxidant and antimicrobial), the potential of these molecules is yet to be fully unravelled, as the lipidome of the majority of marine organisms remains largely unknown. Different marine organisms, even when closely related in the tree of life, display specific lipidome signatures, which are representative of the remarkable chemical biodiversity present in world oceans. Lipid composition can also change due to environmental and nutritional conditions. If one considers that each marine organism contains thousands of structurally and functionally diverse lipids, it is clear that the characterization of their lipidome is a challenging task. Nonetheless, in recent years, advanced analytical approaches coupling chromatography and mass spectrometry have emerged as powerful tools in lipidomic analysis. The resolution and high throughput analysis achieved with these analytical approaches has allowed researchers to identify and quantify the lipid species present on the cells and tissues of a diversity of marine organisms, opening new perspectives in the identification of lipid signatures for their valorisation and biotechnological applications.

Advancements in Algal Biofuels Research - Recent Evaluation of Algal Biomass Production and Conversion Methods of into Fuels and High Value Co-products

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889451982 Year: Pages: 81 DOI: 10.3389/978-2-88945-198-2 Language: English
Publisher: Frontiers Media SA
Subject: Biotechnology --- General and Civil Engineering
Added to DOAB on : 2017-10-13 14:57:01
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Algae biomass has enormous potential to produce fuels and value-added products. Algae-derived biofuels and bioproducts offer great promise in contributing to U.S. energy security and in mitigating the environmental concerns associated with conventional fuels. Algae’s ability to grow in low quality water/wastewater and to accumulate lipids has encouraged scientists to investigate algae as a medium for wastewater treatment and a potential source of fuel and bioproducts. There are growing demands for biomass-based transportation fuels, including biodiesel, bio-oil, biomethane, biohydrogen, and other high-value products (nutraceuticals, proteins, omega-3 etc.). Algae can help address these needs. The topic of algae energy includes the production and characterization of algae cultures, conversion into fuel feedstocks and high value products, and optimization of product isolation and use. In view of the increasing efforts in algae biomass production and conversion into energy and high-value products, the current research topic covers important aspects of algal strain selection, culture systems, inorganic carbon utilization, lipid metabolism and quality, biomass harvesting, extraction of lipids and proteins, and thermochemical conversion of algal feedstocks into biocrude.

Advances in Microalgae Biology and Sustainable Applications

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889450145 Year: Pages: 152 DOI: 10.3389/978-2-88945-014-5 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Botany --- General and Civil Engineering --- Biotechnology
Added to DOAB on : 2018-02-27 16:16:44
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It has become more evident that many microalgae respond very differently than land plants to diverse stimuli. Therefore, we cannot reduce microalgae biology to what we have learned from land plants biology. However, we are still at the beginning of a comprehensive understanding of microalgae biology. Microalgae have been posited several times as prime candidates for the development of sustainable energy platforms, making thus the in-depth understanding of their biological features an important objective. Thus, the knowledge related to the basics of microalgae biology must be acquired and shared rapidly, fostering the development of potential applications. Microalgae biology has been studied for more than forty years now and more intensely since the 1970’s, when genetics and molecular biology approaches were integrated into the research programs. Recently, studies on the molecular physiology of microalgae have provided evidences on the particularities of these organisms, mainly in model species, such as Chlamydomonas reinhardtii. Of note, cellular responses in microalgae produce very interesting phenotypes, such as high lipid content in nitrogen deprived cells, increased protein content in cells under high CO2 concentrations, the modification of flagella structure and motility in basal body mutant strains, the different ancient proteins that microalgae uses to dissipate the harmful excess of light energy, the hydrogen production in cells under sulfur deprivation, to mention just a few. Moreover, several research groups are using high-throughput and data-driven technologies, including “omics” approaches to investigate microalgae cellular responses at a system-wide level, revealing new features of microalgae biology, highlighting differences between microalgae and land plants. It has been amazing to observe the efforts towards the development and optimization of new technologies required for the proper study of microalgae, including methods that opened new paths to the investigation of important processes such as regulatory mechanisms, signaling crosstalk, chemotactic mechanisms, light responses, chloroplast controlled mechanisms, among others. This is an exciting moment in microalgae research when novel data are been produced and applied by research groups from different areas, such as bioprocesses and biotechnology. Moreover, there has been an increased amount of research groups focused in the study of microalgae as a sustainable source for bioremediation, synthesis of bioproducts and development of bioenergy. Innovative strategies are combining the knowledge of basic sciences on microalgae into their applied processes, resulting in the progression of many applications that hopefully, will achieve the necessary degree of optimization for economically feasible large-scale applications. Advances on the areas of basic microalgae biology and novelties on the essential cellular processes were revealed. Progress in the applied science showed the use of the basic science knowledge into fostering translational research, proposing novel strategies for a sustainable world scenario. In this present e-book, articles presented by research groups from different scientific areas showed, successfully, the increased development of the microalgae research. Herewith, you will find articles ranging from bioprospecting regional microalgae species, through advances in microalgae molecular physiology to the development of techniques for characterization of biomass and the use of biomass into agriculture and bioenergy production. This e-book is an excellent source of knowledge for those working with microalgae basic and applied sciences, and a great opportunity for researchers from both areas to have an overview of the amazing possibilities we have for building an environmentally sustainable future once the knowledge is translated into novel applications.

Nutrition and Cancer

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ISBN: 9783038428916 9783038428923 Year: Pages: VIII, 206 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Oncology --- Internal medicine
Added to DOAB on : 2018-06-22 11:04:15
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The development and treatment of cancer presents a complex interaction between tumor and host. Provision of nutrients not only enables the maintenance of nutritional status, but also provides substrates and signals for immunity, tumor metabolism and protection of the host from treatment toxicities. Fat is one dietary element that has been explored for its role in cancer development. While the bulk of these studies have been observational or experimental, the evidence assembled suggests that dietary lipids behave uniquely to prevent or promote cancers. An additional aspect of cancer development is the role of adipose tissue as a source of, and a responder to, inflammatory signals that may be involved in tumor development. This Special Issue of Nutrients focuses on fat and cancer. The contributors to this Special Issue are well-recognized leaders in the field of cancer and have unique areas of focus including metabolism, immunology, biochemistry, epidemiology and nutrition. Each contribution highlights the latest research in these areas and what is known about fat and cancer with topics ranging from diet and cancer prevention, mechanisms of n-3 fatty acids on tumor development and the role of adipose tissue in cancer development and progression.

Antioxidants and Second Messengers of Free Radicals

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ISBN: 9783038975335 / 9783038975342 Year: Pages: 194 DOI: 10.3390/books978-3-03897-534-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Biology --- Medicine (General) --- Chemistry (General)
Added to DOAB on : 2019-01-17 09:35:49
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The history of science can teach modern men that our understanding of life is to a great extent based on the accuracy of the analytical methods that we use and, on our readiness to oppose dogmatic opinions, which are based on outdated methods and black/white approaches to the major questions raised by mankind in the past. The recent decades have brought a lot of new insights into the fundamentals of the active principles of reactive oxygen species that are necessary for living cells, but which also cause dangerous pathophysiological processes. Accordingly, although they were previously considered to be the most undesired toxic compounds generated as the final products of the oxidative degradation of lipids, reactive aldehydes are now considered to play important roles both in health and in major diseases. Represented mostly by 4-hydroxynonenal (HNE), a substance discovered only fifty years ago, reactive aldehydes are the focus of research not only because of their toxicity but also because of their positive effects regulating the most important metabolic processes such as growth of living cells or the death of cells. Better understanding the interactions between reactive aldehydes and natural or synthetic antioxidant substances might eventually help us to better monitor, prevent and control modern diseases, thus building pillars for the development of the modern, multidisciplinary life sciences and integrative medicine of the 21st century.

Fatty Acids and Cardiometabolic Health

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ISBN: 9783038978909 / 9783038978916 Year: Pages: 202 DOI: 10.3390/books978-3-03897-891-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Nutrition and Food Sciences
Added to DOAB on : 2019-06-26 08:44:06
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The impact of fat intake on hypercholesterolemia and related atherosclerotic cardiovascular diseases has been studied for decades. However, the current evidence base suggests that fatty acids also influences cardiometabolic diseases through other mechanisms including effects on glucose metabolism, body fat distribution, blood pressure, inflammation, and heart rate. Furthermore, studies evaluating single fatty acids have challenged the simplistic view of shared health effects within fatty acid groups categorized by degree of saturation. In addition, investigations of endogenous fatty acid metabolism, including genetic studies of fatty acid metabolizing enzymes, and the identification of novel metabolically derived fatty acids have further increased the complexity of fatty acids’ health impacts. This Special Issue aims to include original research and up-to-date reviews on genetic and dietary modulation of fatty acids, and the role and function of dietary and metabolically derived fatty acids in cardiometabolic health.

Breastfeeding and Human Lactation

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ISBN: 9783038979302 / 9783038979319 Year: Pages: 450 DOI: 10.3390/books978-3-03897-931-9 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Nutrition and Food Sciences
Added to DOAB on : 2019-06-26 08:44:06
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Human lactation has evolved to produce a milk composition that is uniquely-designed for the human infant. Not only does human milk optimize infant growth and development, it also provides protection from infection and disease. More recently, the importance of human milk and breastfeeding in the programming of infant health has risen to the fore. Anchoring of infant feeding in the developmental origins of health and disease has led to a resurgence of research focused in this area. Milk composition is highly variable both between and within mothers. Indeed the distinct maternal human milk signature, including its own microbiome, is influenced by environmental factors, such as diet, health, body composition and geographic residence. An understanding of these changes will lead to unravelling the adaptation of milk to the environment and its impact on the infant. In terms of the promotion of breastfeeding, health economics and epidemiology is instrumental in shaping public health policy and identifying barriers to breastfeeding. Further, basic research is imperative in order to design evidence-based interventions to improve both breastfeeding duration and women’s breastfeeding experience.

Keywords

human milk --- breastfed infants --- body composition --- anthropometrics --- milk intake --- bioelectrical impedance spectroscopy --- ultrasound skinfolds --- maternal factors --- infant --- feeding --- preterm --- premature --- bottle --- human milk --- breastfeeding --- nipple shield --- infant feeding --- choline --- phosphocholine --- glycerophosphocholine --- lactation --- human milk --- infants --- adequate intake --- dietary recommendations --- Canada --- Cambodia --- breast milk --- galactogogues --- mothers of preterm infants --- breastfeeding --- attitudes --- knowledge --- midwifery --- formula supplementation --- justification of supplementation --- maternal wellbeing --- maternal distress --- post-partum distress --- breastfeeding support --- paternal role --- partner support --- infant --- Ireland --- passive immunity --- antibodies --- lactation --- peptidomics --- prematurity --- proteolysis --- breast milk --- preterm infant --- enteral nutrition --- lipids --- omega-3 fatty acids --- omega-6 fatty acids --- Docosahexaenoic acid --- Arachidonic acid --- long-chain polyunsaturated fatty acids --- pregnancy --- breast milk --- lactation --- maternal diet --- n-6 and n-3 polyunsaturated fatty acid --- docosahexaenoic acid --- zinc deficiency --- plasma zinc --- lactating women --- zinc supplementation --- Quito --- Ecuador --- Andean region --- GDM --- lactation --- thyroid --- triiodothyronine --- thyroxine --- thyroid antibodies --- breastfeeding --- knowledge --- practice --- barriers --- social support --- professional support --- raw breast milk --- cytomegalovirus --- milk-acquired infections --- preterm infant --- adipokines --- adiponectin --- leptin --- breastfeeding --- infant --- body composition --- bioelectrical impedance spectroscopy --- ultrasound skinfolds --- human milk --- lactation --- human lactation --- expressing --- milk synthesis --- fat synthesis --- human milk --- milk metabolites --- lactation --- milk metabolomics --- human milk --- breastfeeding --- lactation --- lipids --- lipidomics --- mass spectrometry --- chromatography --- NMR spectroscopy --- human milk --- sex-specificity --- infant growth --- early life nutrition --- postnatal outcomes --- breastfeeding --- breast milk --- human milk --- colostrum --- IgA --- HGF --- TGF-? --- growth factors --- geographical location --- human milk --- potassium --- sodium --- ICP-OES --- ion selective electrode --- lactoferrin --- human milk --- infection --- immunity --- antisecretory factor --- human milk --- breast milk --- breastfeeding --- inflammation --- lactoferrin --- candida --- human milk --- milk cells --- immune cells --- antimicrobial proteins --- human milk --- breastfeeding --- ethnicity --- composition --- diet --- responsive feeding --- breastfeeding --- breastmilk --- babywearing --- co-sleeping --- mother–infant interaction --- feeding cues --- maternal responsiveness --- mother–infant physical contact --- proximal care --- fatty acids --- long-chain polyunsaturated fatty acids --- endocannabinoids --- infant health --- breast milk --- casein --- whey --- protein --- breastfeeding --- infant --- body composition --- bioelectrical impedance spectroscopy --- ultrasound skinfolds --- human milk --- calculated daily intakes --- lactation --- human milk --- metabolites --- microbiome --- mode of delivery --- caesarean section --- proton nuclear magnetic resonance --- breastfeeding --- human milk composition --- body composition --- maternal diet --- infant growth --- appetite regulation --- N-acylethanolamines --- OEA --- SEA --- PEA --- breastfeeding --- human milk composition --- obesity --- Breastfeeding --- human lactation --- lactation --- human milk --- breast milk --- milk composition

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