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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.

Myofilament Function in Health and Disease

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889451869 Year: Pages: 161 DOI: 10.3389/978-2-88945-186-9 Language: English
Publisher: Frontiers Media SA
Subject: Physiology --- Science (General)
Added to DOAB on : 2017-08-28 14:01:09
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The present E-book, consisting of a compilation of original articles and reviews, presents how myofilaments are regulated in cardiac and skeletal muscles and trigger contraction. Additionally, this E-book gives insights into their dysregulation in a number of muscle disorders.

Keywords

Contraction --- Muscle --- Heart --- skeletal muscle --- sarcomere --- Myosin --- Actin --- Myopathy

Novel Pharmacological Inhibitors for Bacterial Protein Toxins

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ISBN: 9783038424314 9783038424307 Year: Pages: VI, 118 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Public Health --- Biology
Added to DOAB on : 2017-06-13 09:39:34
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Many medically relevant bacteria cause severe human and animal diseases because they produce and release protein toxins that target mammalian cells. Because the toxin-induced cell damage is the reason for the clinical symptoms, the targeted pharmacological inhibition of the cytotoxic mode of action of bacterial toxins should prevent or cure the respective toxin-associated disease. Toxin inhibitors might be beneficial when the toxin acts in the absence of the producing bacteria (e.g., food poisoning), but also in combination with antibiotics in infectious diseases when the toxin-producing bacteria are present. The focus of this Special Issue of Toxins is on the development and characterization of novel inhibitors against bacterial toxins, e.g., toxin neutralizing antibodies, peptides or small compounds, as well as toxin pore blockers, which interfere with bacterial toxins and thereby protect cells from intoxication.

Lignans

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ISBN: 9783038979081 9783038979098 Year: Pages: 384 DOI: 10.3390/books978-3-03897-909-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General) --- Organic Chemistry
Added to DOAB on : 2019-06-26 10:09:00
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Lignans are a class of natural products found mainly in plants. They have a wide variety of structures and exhibit a range of potent biological activities. Lignans are also well-known components of a number of widely eaten foods and are frequently studied for their dietary impact. Owing to these factors, lignans have been extensively studied by scientists from a large number of disciplines. This collection of research and review articles describes topics ranging in scope from the recent isolation and structural elucidation of new lignans, strategies towards the chemical synthesis of lignans, assessment of their biological activities and potential for further therapeutic development. Research showing the impact of lignans in the food and agricultural industries is also presented.

Keywords

lignans --- chemometrics --- neolignans --- flavonolignans --- chemical space --- drug-like --- Lespedeza cuneata --- lignan glycoside --- flavonoid glycoside --- cytotoxicity --- adipocyte and osteoblast differentiation --- Bursera --- Burseraceae --- lignans --- lignan --- molecular dynamics --- intermolecular interactions --- graph theory --- lignans --- heilaohu --- tujia ethnomedicine --- chemical characterization --- cytotoxicity --- antioxidant --- cultivar --- environment --- flax --- flavonol --- genetic --- hydroxycinnamic acid --- lignan --- seed --- aryldihydronaphthalene lignan --- arylnaphthalene lignan --- oxidation --- synthesis --- lignans --- dibenzyl butyrolactones --- anti-proliferative --- acyl-Claisen --- stereoselective synthesis --- Schisandra rubriflora --- Schisandra chinensis --- red-flowered Chinese magnolia vine --- Chinese magnolia vine --- lignans --- phytochemical analysis --- UHPLC-MS/MS --- anti-inflammatory activity --- LOX --- COX --- sPLA2 --- lignans --- neolignans --- Lauraceae --- chemical components --- chemical structures --- dietary lignans --- national databases --- food groups --- dietary intake --- harmonized databases --- lignans --- in silico studies --- podophyllotoxin --- antibacterial activity --- acetylcholinesterase inhibitors --- antioxidant activity --- cytotoxicity --- natural products --- total synthesis --- lignan --- Bursera fagaroides --- podophyllotoxin-type lignans --- cell cycle --- cell migration --- epiboly --- microtubules --- F-actin --- cancer --- lignans --- animal health --- cattle --- enterolignan --- human health --- pharmacokinetic --- ruminant --- secoisolariciresinol diglucoside --- Lignan --- bitterness --- taste-active compound --- quantification --- oak ageing --- lignans --- norlignans --- 9-norlignans --- semisynthesis --- hydroxymatairesinol --- bioactivity --- lignans --- oxidation --- lignans --- diet --- antioxidants --- health promotion --- chronic diseases --- Schisandrae Chinensis Fructus --- wild --- cultivated --- multiple bioactive components --- simultaneous quantitation

Transmucosal Absorption Enhancers in the Drug Delivery Field

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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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