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Ca2+ and Ca2+-interlocked Membrane Guanylate Cyclase Modulation

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889195060 Year: Pages: 185 DOI: 10.3389/978-2-88919-506-0 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Neurology
Added to DOAB on : 2015-12-03 13:02:24
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The tale of cyclic GMP has been astonishing. Having overcome an initial disbelief, cyclic GMP has risen to its present eminence as a premium cellular signal transduction messenger of not only hormonal extracellular but also of the intracellular signals. This research topic focuses on the pathways and functions of membrane guanylate cyclases in different tissues of the body and their interplay with intracellular sensory signals where in many cases, cyclic GMP along with Ca2+ have taken on roles as synarchic co-messengers.

Carbonic Anhydrases and Metabolism

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ISBN: 9783038978008 9783038978015 Year: Pages: 184 DOI: 10.3390/books978-3-03897-801-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2019-04-25 16:37:17
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Carbonic anhydrases (CAs; EC 4.2.1.1) are metalloenzymes present in all kingdoms of life, as they equilibrate the reaction between three simple but essential chemical species: CO2, bicarbonate, and protons. Discovered more than 80 years ago, in 1933, these enzymes have been extensively investigated due to the biomedical application of their inhibitors, but also because they are an extraordinary example of convergent evolution, with seven genetically distinct CA families that evolved independently in Bacteria, Archaea, and Eukarya. CAs are also among the most efficient enzymes known in nature, due to the fact that the uncatalyzed hydration of CO2 is a very slow process and the physiological demands for its conversion to ionic, soluble species is very high. Inhibition of the CAs has pharmacological applications in many fields, such as antiglaucoma, anticonvulsant, antiobesity, and anticancer agents/diagnostic tools, but is also emerging for designing anti-infectives, i.e., antifungal, antibacterial, and antiprotozoan agents with a novel mechanism of action. Mitochondrial CAs are implicated in de novo lipogenesis, and thus selective inhibitors of such enzymes may be useful for the development of new antiobesity drugs. As tumor metabolism is diverse compared to that of normal cells, ultimately, relevant contributions on the role of the tumor-associated isoforms CA IX and XII in these phenomena have been published and the two isoforms have been validated as novel antitumor/antimetastatic drug targets, with antibodies and small-molecule inhibitors in various stages of clinical development. CAs also play a crucial role in other metabolic processes connected with urea biosynthesis, gluconeogenesis, and so on, since many carboxylation reactions catalyzed by acetyl-coenzyme A carboxylase or pyruvate carboxylase use bicarbonate, not CO2, as a substrate. In organisms other than mammals, e.g., plants, algae, and cyanobacteria, CAs are involved in photosynthesis, whereas in many parasites (fungi, protozoa), they are involved in the de novo synthesis of important metabolites (lipids, nucleic acids, etc.). The metabolic effects related to interference with CA activity, however, have been scarcely investigated. The present Special Issue of Metabolites aims to fill this gap by presenting the latest developments in the field of CAs and their role in metabolism.

Mitochondrial Dysfunction in Aging and Diseases of Aging

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ISBN: 9783039213276 9783039213283 Year: Pages: 270 DOI: 10.3390/books978-3-03921-328-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2019-12-09 11:49:15
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This collection of review articles authored by international experts pulls together current information about the role of mitochondria in aging and diseases of aging. Mitochondria are vitally important cellular organelles and undergo their own aging process becoming less efficient in aged animals including humans. These changes have wide-ranging significance contributing to immune dysfunction (autoimmunity and immune deficiency), inflammation, delayed healing, skin and retinal damage, cancer and most of the degenerative diseases of aging. Mitochondrial aging predisposes to drug toxicity in the geriatric population and to many of the features of normal aging. The research detailed in this book summarizes current understanding of the role of mitochondria in the complex molecular changes of aging, moving on to specific diseases of aging. Mitochondrial dysfunction is an important target for development of treatments for aging and disease. The last article details how exercise is a treatment and combats many features of the aging process.

Keywords

aging --- mitochondria --- inflammation --- innate immunity --- adaptive immunity --- immunosenescence --- cell danger response --- healing cycle --- mitochondria --- purinergic signaling --- metabokines --- sphingolipids --- integrated cell stress response --- de-emergence --- crabtree effect --- pasteur effect --- coenzyme Q10 --- aging --- age-related diseases --- mitochondrial dysfunction --- mitochondria --- skin --- ageing --- reactive oxygen species --- photoageing --- 25(OH)D --- 1,25(OH)2D --- aging --- cytokines --- inflammation --- morbidity and mortality --- prevention --- reactive oxygen species --- ultraviolet --- aging --- mitochondria --- retina --- optic nerve --- diabetic retinopathy --- age-related macular degeneration --- glaucoma --- drug-induced mitochondrial toxicity --- polypharmacy --- aging --- mitochondrial dysfunction --- insulin resistance --- type 2 diabetes --- mitochondrial transfer --- exosomes --- mitochondrial --- genetic mutations --- cardiovascular disease --- heart failure --- cardiomyopathy --- mitochondria --- cancer --- nucleotide metabolism --- DNA damage --- NAD+ --- mitochondria --- ALS --- axonal transport --- mitophagy --- SOD1 --- Miro1 --- PINK1 --- Parkin --- multiple sclerosis --- mitochondria --- neuroinflammation --- neurodegeneration --- Parkinson’s disease --- mitochondria --- ageing --- neurodegenerative disease --- Alzheimer’s disease --- eIF2? --- metabolism --- mitochondria --- proteostasis --- stress response --- aging --- exercise --- mitochondria --- aerobic --- ROS --- inflammation --- senescence --- lysosome --- autophagy --- mitophagy --- n/a

Carotenoids and Human Health

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ISBN: 9783039218325 9783039218332 Year: Pages: 308 DOI: 10.3390/books978-3-03921-833-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Nutrition and Food Sciences
Added to DOAB on : 2020-01-07 09:08:26
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Carotenoids are a group of approximately 600 compounds synthesized by photosynthetic organisms. These pigments are abundant in fruits and vegetables, as well as in certain animal products such as eggs and salmon, being responsible for their colorful appearance. The bioactive properties of certain carotenoids in human health are clear, as some of these compounds have antioxidant properties and serve as the only precursors of vitamin A in nature. The aim of this Special Issue entitled “Carotenoids and Human Health” is to provide the scientific community with an updated perspective of this exciting and growing research area. We compiled 19 papers from some of the most prominent scientists in the carotenoid field, including seven literature reviews and 12 original publication, covering topics such as cancer, obesity, vision, cognitive function, and skin health.

Keywords

carotenoids --- lycopene --- gastric cancer --- H. pylori --- smoking --- case-control study --- Korea --- cancer-related cognitive impairment --- cognition --- carotenoid --- memory --- inflammation --- mango by-products --- lutein --- ?-carotene --- ?-tocopherol --- mangiferin --- food ingredients --- astaxanthin --- Akkermansia --- alcoholic fatty liver disease --- inflammation --- gut microbiota --- lycopene --- carotene --- retinoic acid --- retinoid --- vitamin A --- RAR --- RXR --- ?-carotene --- ?-carotene --- ?-cryptoxanthin --- carotenoids --- lutein --- provitamin A --- retinol --- vitamin A --- breastfeeding --- new-born --- full-term mothers --- preterm mothers --- xanthophylls --- carotenes --- lutein --- colostrum --- mature milk --- ?-Cryptoxanthin --- carotenoids --- Caenorhabditis elegans --- fat reduction --- oxidative stress --- transcriptomic analysis --- metabolic syndrome --- aging --- prostate cancer --- tomato --- lycopene --- androgen --- cell culture --- animal --- obesity --- hippocampus --- nutrition --- overweight --- carotenoids --- Phaeodactylum tricornutum --- microalgae --- fucoxanthin --- eicosapentanoic acid --- obesity --- browning --- brown adipose tissue --- carotenes --- xanthophylls --- bioavailability --- intestine --- membrane transporters --- Vitamin A --- adipocyte --- ?-carotene oxygenase 1 --- hypertension --- carotenoids --- tomato extract --- lycopene --- phytoene --- phytofluene --- bioavailability --- glaucoma --- antioxidants --- oxidative stress --- macular pigment --- lutein --- colourless carotenoids --- cosmeceuticals --- functional foods --- nutraceuticals --- nutricosmetics --- photoprotection --- phytoene --- phytofluene --- public health --- nutrition --- chronic disease --- lutein --- zeaxanthin --- lycopene --- beta-carotene --- alpha-carotene --- beta-cryptoxanthin --- adipocytes --- adipose tissue --- brain --- carotenoids --- obesity --- retinoids --- carotenoids --- bioactive compounds

Nutrition and Eye Health

Authors: ---
ISBN: 9783039219902 9783039219919 Year: Pages: 242 DOI: 10.3390/books978-3-03921-991-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Biology --- Science (General)
Added to DOAB on : 2020-01-30 16:39:46
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Blindness and visual impairment impact significantly on an individual’s physical and mental well-being. Loss of vision is a global health problem, with approximately 250 million of the world’s population currently living with vision loss, of which 36 million are classified as blind. Visual impairment is more frequent in the elderly, with cataract and age-related macular degeneration (AMD) accounting for over 50% of cases globally. Oxidative stress has been strongly implicated in the pathogenesis of both conditions, and consequently the role of nutritional factors, in particular carotenoids and micronutrient antioxidants, have been investigated as possible preventative or therapeutic strategies. Dry eye syndrome (DES) is one of the most common ophthalmic conditions in the world. DES occurs where the eye does not produce enough tears and/or the tears evaporate too quicklyleading to discomfort and varying degrees of visual disturbance. There has recently been a great deal of interest in the potential for oral or topical supplementation with essential fatty acids (EFAs), specifically omega-3 and omega-6 fatty acids, as an adjunct to conventional treatments for DES. The objective of this Special Issue on ‘Nutrition and Eye Health’ is to publish papers describing the role of nutrition in maintaining eye health and the use of nutritional interventions to prevent or treat ocular disease. A particular (but not exclusive) emphasis will be on papers (reviews and/or clinical or experimental studies) relating to cataract, AMD and DES.

Keywords

lutein --- RR-zeaxanthin --- mesozeaxanthin (RS zeaxanthin) --- light damage --- photoreceptor degeneration --- oxidative stress --- endoplasmic reticulum stress --- electroretinography --- advanced glycation end products --- chyrsin --- diabetic retinopathy --- endoplasmic reticulum --- retinal pigment epithelium --- visual cycle --- cataract --- phytoconstituents --- lens --- preclinical models --- drug discovery --- age-related macular degeneration --- gut-retina axis --- gut microbiota --- dietary habits --- micronutrients --- fish oil --- omega-3 polyunsaturated fatty acids --- personalised medicine --- Lactobacillus paracasei KW3110 --- retina --- light --- macrophage --- saffron --- Crocus Sativus L. --- crocin --- crocetin --- supplements --- anti-oxidant --- anti-inflammatory --- AMD --- diabetes --- glaucoma --- retina --- oxidative stress --- inflammation --- microvascular lesions --- neoangiogenesis --- polyphenols --- flavonoids --- carotenoids --- saponins --- rosmarinic acid --- sinapic acid --- lenses --- estrogen-deficient rats --- oxidative stress --- reduced glutathione --- omega-3 --- fatty acid --- diet --- dietary assessment --- clinical survey --- eye disease --- dry eye --- age-related macular degeneration --- food frequency questionnaire --- CODS --- clinical practice guidelines --- systematic reviews --- age-related macular degeneration --- nutritional supplements --- diet --- nutrition --- AGREE II --- Cucurbita argyrosperma --- corneal chemical burn --- angiogenesis --- corneal neovascularization (CNV) --- vascular endothelial growth factor (VEGF) --- interleukin-1? (IL-1?) --- cyclooxigenase-2 (COX-2) --- nuclear factor-kappaB (NF-?B) --- dietary antioxidants --- antioxidant supplements --- lens --- cataract --- n/a

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