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Olfactory subsystems in mammals: morphology, genetic and evolution

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889195541 Year: Pages: 75 DOI: 10.3389/978-2-88919-554-1 Language: English
Publisher: Frontiers Media SA
Subject: Neurology --- Science (General)
Added to DOAB on : 2016-01-19 14:05:46
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The nasal cavity and the elements it comprises are lined by mucosa. This mucosa contains olfactory sensory neurons, which are organized into four different territories: main olfactory epithelium, septal organ, vomeronasal epithelium and ganglion of Grünemberg. From a morphological point of view, these territories could initially be considered as isolated olfactory subsystems, which - as a whole or independently - have been addressed in the contributions enclosed in this Topic.

Immune-Epithelial Crosstalk in Inflammatory Bowel Diseases and Mucosal Wound Healing

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889456185 Year: Pages: 159 DOI: 10.3389/978-2-88945-618-5 Language: English
Publisher: Frontiers Media SA
Subject: Medicine (General) --- Allergy and Immunology
Added to DOAB on : 2019-01-23 14:53:43
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80% of the bodies’ immune cells are harbored within the intestine. They are only separated from 1014 microorganisms by a single layer of intestinal epithelial cells and a secreted superficial mucus layer. Therefore, the intestinal epithelial surface represents a main frontier in host defense. Providing an intact mucosal barrier is vital for the host to limit bacterial entry and spread to the circulation. This specialized localization requires dynamic responses of intestinal epithelial cells to both pathogen- and immune-derived signals. Moreover, emergency barriers are needed in the setting of epithelial damage, which allow provisional microbial control and a timely restitution of mucosal integrity. Epithelial cells constantly interact with subjacent immune cells and fibroblasts, actively directing the immune response and also shaping the luminal microbiota. Epithelial dysfunction has been appreciated in recent years as a driving element in the pathogenesis of Inflammatory Bowel Diseases (IBD). Additionally, primary immune deficiencies may manifest in the form of chronic intestinal inflammation mimicking features of IBD. Recent advances in the techniques of epithelial cell culture and the discovery of new immune cell types and cellular properties have tremendously advanced the understanding in this interesting field of research. In this research topic, we want to focus on the complex interaction of intestinal epithelial cells, luminal flora and adjacent immune cells and invite manuscripts which highlight the dynamic responses of both epithelium and immune cells under steady-state or inflammatory conditions, and envision how this may be translated to the benefit of patient-care.

Diverse functions of mucosal resident memory T cells

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889195398 Year: Pages: 86 DOI: 10.3389/978-2-88919-539-8 Language: English
Publisher: Frontiers Media SA
Subject: Allergy and Immunology --- Medicine (General)
Added to DOAB on : 2016-01-19 14:05:46
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Early studies recognized the unique phenotype and attributes of T cells found in mucosal tissues, such as the intestines, skin, lung and female reproductive tract. This special topic issue will cover many aspects of mucosal-resident T cell biology during infection and disease and is dedicated to Leo Lefrancois, a pioneer in this field who recently passed away. A major proportion of these mucosal T cells are memory T cells, now recognized as a major constituent of memory T cells referred to as tissue-resident memory T cells. Unlike central and effector memory T cell subsets, tissue-resident memory T cells exhibit tissue specificity with minimal systemic migration. Nonetheless, tissue-resident memory T cells share a similar origin and display some overlapping phenotypes with their other memory T cell counterparts. Articles in this issue will describe the different types of memory T cells residing in mucosal tissues, their origins and functions as well as how they vary among discrete mucosal sites. Manuscripts will consider the unique physiological environments and cellular constituents which facilitate tissue residency while preserving tissue function. Additionally, there will be descriptions of the various mechanisms responsible for the migration and segregation of tissue resident memory CD8 T cells from the peripheral T cell pool. Although the mechanisms facilitating the sequestration of tissue-resident memory T cells within a respective tissue has not well characterized, various theories will also be discussed. Lastly, how these T cells contribute to immunity to pathogens, cancer, and autoimmunity and could be modified through vaccination or therapeutic intervention will be described. As mucosal tissues are the major portals of pathogen entry and frequent transformation, the activities and persistence of tissue resident memory T cells is crucial for mediating protection at these sites.

Marine Glycobiology, Glycomics and Lectins

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ISBN: 9783039218202 9783039218219 Year: Pages: 176 DOI: 10.3390/books978-3-03921-821-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Biochemistry
Added to DOAB on : 2019-12-09 16:39:37
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Glycans (carbohydrate chains) of marine creatures are rich and diverse in polysaccharides, glycoproteins, and glycolipids. The chains that are metabolized by glycan-related enzymes (glycosyltransferases and glycosidases) are recognized by glycan-binding proteins (lectins) which regulate cellular processes such as growth, differentiation, and death. Marine glycomics that involves the genome and transcriptome accelerates our understanding of the evolution of glycans, glycan-related enzymes, and lectins. From 2017 to 2019, the Special Issue “Marine Glycobiology, Glycomics and Lectins” of the journal Marine Drugs published scientific articles and reviews, on the background of “glycobiology”—that is, glycan-based biosciences. The aim was to promote the discovery of novel biomolecules that contribute to drug development and clinical studies. This has great potential for establishing connections between the fields of both human health and marine life sciences.This book contains 11 scientific papers representing current topics in comprehensive glycosciences related to therapeutic agents from marine natural products, as outlined.

TRP Channels in Health and Disease

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ISBN: 9783039210824 9783039210831 Year: Pages: 266 DOI: 10.3390/books978-3-03921-083-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Medicine (General)
Added to DOAB on : 2019-06-26 08:44:07
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Almost 25 years ago, the first mammalian transient receptor potential (TRP) channel was cloned and published. TRP channels now represent an extended family of 28 members fulfilling multiple roles in the living organism. Identified functions include control of body temperature, transmitter release, mineral homeostasis, chemical sensing, and survival mechanisms in a challenging environment. The TRP channel superfamily covers six families: TRPC with C for “canonical”, TRPA with A for “ankyrin”, TRPM with M for “melastatin”, TRPML with ML for “mucolipidin”, TRPP with P for “polycystin”, and TRPV with V for “vanilloid”. Over the last few years, new findings on TRP channels have confirmed their exceptional function as cellular sensors and effectors. This Special Book features a collection of 8 reviews and 7 original articles published in “Cells” summarizing the current state-of-the-art on TRP channel research, with a main focus on TRP channel activation, their physiological and pathophysiological function, and their roles as pharmacological targets for future therapeutic options.

Keywords

ion channel --- TRPC --- small molecules --- calcium --- chemical probes --- TRPV1 --- TRPV2 --- TRPV3 --- TRPV4 --- mucosal epithelium --- ulcerative colitis --- inflammatory bowel disease --- TRPM4 channel --- cardiovascular system --- physiology --- pathophysiology --- TRPC6 --- elementary immunology --- inflammation --- calcium --- sodium --- neutrophils --- lymphocytes --- endothelium --- platelets --- human medulla oblongata --- cuneate nucleus --- dorsal column nuclei --- TRPV1 --- calcitonin gene-related peptide --- substance P --- TRP channels --- calcium signaling --- salivary glands --- xerostomia --- radiation --- inflammation --- transient receptor potential channels --- TRPC3 pharmacology --- channel structure --- lipid mediators --- photochromic ligands --- transient receptor potential --- TRPC3 --- mGluR1 --- GABAB --- EPSC --- Purkinje cell --- cerebellum --- toxicology --- TRP channels --- organ toxicity --- chemicals --- pollutants --- chemosensor --- TRPM7 --- kinase --- inflammation --- lymphocytes --- calcium signalling --- SMAD --- TH17 --- hypersensitivity --- regulatory T cells --- thrombosis --- graft versus host disease --- 2D gel electrophoresis --- AP18 --- HEK293 --- HSP70 --- MALDI-TOF MS(/MS) --- nanoHPLC-ESI MS/MS --- proteomics --- sulfur mustard --- TRPA1 --- TRPC channels --- diacylglycerol --- TRPC4 --- TRPC5 --- NHERF --- TRP channel --- TRPY1 --- Saccharomyces cerevisiae --- calcium --- manganese --- oxidative stress --- ion channels --- overproduction --- production platform --- protein purification --- Saccharomyces cerevisiae --- sensors --- transient receptor potential (TRP) channels --- yeast --- adipose tissue --- bioavailable --- menthol --- topical --- TRPM8 --- n/a

Metabolomics in Neurodegenerative Disease

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ISBN: 9783039280407 / 9783039280414 Year: Pages: 184 DOI: 10.3390/books978-3-03928-041-4 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2020-06-09 16:38:57
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The range of human neurodegenerative diseases continues to pose significant unmet medical needs for societies around the world. The progressive and terminal nature of these conditions places a considerable personal burden on the individual affected but also on public health systems and health services. Tens of millions of people are indiscriminately affected by various dementias, which are rising at an alarming rate. There are no cures for many conditions, and it is clear that treatments applied as early as possible could greatly improve outcomes for patients. Therefore, new disease classification and diagnostic tools should be a key priority. Metabolomics represents a relatively new field of analytical science, which can be extremely useful in the early diagnosis of disease. The relatively unique feature of metabolites is that they sit at the intersection between the genetic background of an organism and its environment. Because many neurodegenerative diseases are not genetically inherited (instead having a range of known genetic risk factors and also a large number of unknown environmental triggers) the field of metabolomics offers great promise for the discovery of new, biologically, and clinically relevant biomarkers for neurodegenerative disorders. It is already bringing forward new knowledge in terms of the mechanisms of neurodegenerative disease.

Nutrition and Eye Health

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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

Transmucosal Absorption Enhancers in the Drug Delivery Field

Authors: --- ---
ISBN: 9783039218486 9783039218493 Year: Pages: 406 DOI: 10.3390/books978-3-03921-849-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Therapeutics --- Medicine (General)
Added to DOAB on : 2020-01-30 16:39:46
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Development of strategies to assist the movement of poorly permeable molecules across biological barriers has long been the goal of drug delivery science. In the last three decades, there has been an exponential increase in advanced drug delivery systems that aim to address this issue. However, most proprietary delivery technologies that have progressed to clinical development are based on permeation enhancers (PEs) that have a history of safe use in man. This Special Issue entitled “Transmucosal Absorption Enhancers in the Drug Delivery Field” aims to present the current state-of-the-art in the application of PEs to improve drug absorption. Emphasis is placed on identification of novel permeation enhancers, mechanisms of barrier alteration, physicochemical properties of PEs that contribute to optimal enhancement action, new delivery models to assess PEs, studies assessing safety of PEs, approaches to assist translation of PEs into effective oral, nasal, ocular and vaginal dosage forms and combining PEs with other delivery strategies.

Keywords

absorption enhancers --- sugar-based surfactants --- biocompatibility studies --- transmucosal drug delivery --- intestinal permeation enhancers --- sodium cholate (NaC) --- N-dodecyl-?-D-maltoside (DDM) --- small intestine --- enterocyte --- brush border --- tryptophan --- oral delivery --- insulin --- GLP-1 --- intestinal absorption --- amino acid --- cell-penetrating peptide --- combined microsphere --- chitosan --- cyclodextrin --- nasal delivery --- nose to brain transport --- penetration enhancer --- nasal formulation --- in vivo studies --- nose to brain delivery --- antiepileptic drug --- drug delivery --- block copolymers --- thermogel system --- chitosan derivatives --- amphiphilic polymers --- polymeric micelles --- quaternization --- curcumin --- intestinal delivery --- mucoadhesiveness --- cervicovaginal tumors --- cationic functionalization --- imatinib --- nanocrystals --- in situ hydrogel --- bioenhancer --- cytochrome P450 --- drug absorption enhancer --- efflux --- metabolism --- P-glycoprotein --- pharmacokinetic interaction --- tight junction --- Aloe vera --- gel --- whole leaf --- absorption enhancement --- Caco-2 --- confocal laser scanning microscopy --- F-actin --- FITC-dextran --- tight junctions --- transepithelial electrical resistance --- permeation enhancer --- oral delivery --- formulation --- permeability --- safety --- simulated intestinal fluid --- hydrophobization --- epithelium --- compound 48/80 --- chitosan --- nanoparticles --- mast cell activator --- vaccine adjuvant --- nasal vaccination --- absorption enhancer --- antimicrobial peptide --- Caco-2 --- claudin --- cell-penetrating peptide (CPP) --- drug delivery --- intestinal epithelial cells --- KLAL --- PN159 --- tight junction modulator --- oral macromolecule delivery --- oral peptides --- sodium caprate --- salcaprozate sodium --- epithelial permeability --- epithelial transport --- nasal permeability --- nose-to-brain --- simvastatin --- nanocapsules --- mucoadhesion --- CNS disorders --- chitosan --- nasal --- pulmonary --- drug administration --- absorption enhancers --- nanoparticle --- and liposome --- absorption enhancer --- gemini surfactant --- intestinal absorption --- poorly absorbed drug --- Caco-2 cells --- PTH 1-34 --- teriparatide --- nasal delivery --- pharmacokinetics --- osteoporosis --- man --- sheep --- clinical trial --- preclinical --- Caco-2 --- intestinal absorption --- nanomedicine --- nanoparticle --- oral delivery --- transferrin --- ocular drug delivery --- cornea --- penetration enhancers --- ocular conditions --- ophthalmology --- permeation enhancers --- absorption modifying excipients --- oral delivery --- nasal delivery --- ocular delivery --- vaginal delivery --- transmucosal permeation

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