Relevant bibliographies by topics / Pollen activation

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Pollen activation'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Pollen activation"

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Saporta, M., S. Kamei, L. Persi, J. Bousquet, and B. Arnoux. "Basophil activation during pollen season in patients monosensitized to grass pollens." Allergy 56, no. 5 (2001): 442–45. http://dx.doi.org/10.1034/j.1398-9995.2001.056005442.x.

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Gaspar, Ricardo, Mafalda Ramos de Matos, Luísa Cortes, et al. "Pollen Proteases Play Multiple Roles in Allergic Disorders." International Journal of Molecular Sciences 21, no. 10 (2020): 3578. http://dx.doi.org/10.3390/ijms21103578.

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Allergic diseases are a major health concern worldwide. Pollens are important triggers for allergic rhinitis, conjunctivitis and asthma. Proteases released upon pollen grain hydration appear to play a major role in the typical immunological and inflammatory responses that occur in patients with allergic disorders. In this study, we aimed to identify specific proteolytic activity in a set of pollens with diverse allergenic potential. Diffusates from Chenopodium album, Plantago lanceolata and Eucalyptus globulus were added to a confluent monolayer of Calu-3 cells grown in an air-liquid interface
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Breygina, Maria, Ekaterina Klimenko, Alexandra Podolyan, and Alexander Voronkov. "Dynamics of Pollen Activation and the Role of H+-ATPase in Pollen Germination in Blue Spruce (Picea pungens)." Plants 9, no. 12 (2020): 1760. http://dx.doi.org/10.3390/plants9121760.

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Pollen is a highly specialized structure for sexual plant reproduction. Early stages of pollen germination require the transition from dormant state to active metabolism. In particular, an important role during this early phase of angiosperm pollen germination is played by H+-ATPase. Very little is known about pollen activation in gymnosperm species, and information on the involvement of H+-ATPase is lacking. We tracked four indicators characterizing the physiological state of pollen: membrane potential, intracellular pH, anion efflux and oxygen uptake, in order to monitor the dynamics of acti
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Özdemir, Seçil Kepil, Deniz Güloğlu, Betül A. Sin, Atilla H. Elhan, Aydan İkincioğulları, and Zeynep Mısırlıgil. "Reliability of Basophil Activation Test Using CD203c Expression in Diagnosis of Pollen Allergy." American Journal of Rhinology & Allergy 25, no. 6 (2011): e225-e231. http://dx.doi.org/10.2500/ajra.2011.25.3723.

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Background CD203c is a basophil surface marker and its expression is rapidly up-regulated after cross-linking of high-affinity immunoglobulin E (IgE) receptor (FcepsilonR1) by an allergen. CD203c basophil activation tests have been studied for the in vitro diagnosis of several allergic conditions. However, there is limited data about its diagnostic usefulness. The optimum allergen concentrations for stimulation and allergen specific cutoff values remain unknown for a number of allergens. This study was designed to investigate the efficacy of basophil activation test via CD203c in the diagnosis
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Simons, Meagan A., and Adam R. Smith. "Ovary activation does not correlate with pollen and nectar foraging specialization in the bumblebeeBombus impatiens." PeerJ 6 (February 20, 2018): e4415. http://dx.doi.org/10.7717/peerj.4415.

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Social insect foragers may specialize on certain resource types. Specialization on pollen or nectar among honeybee foragers is hypothesized to result from associations between reproductive physiology and sensory tuning that evolved in ancestral solitary bees (the Reproductive Ground-Plan Hypothesis; RGPH). However, the two non-honeybee species studied showed no association between specialization and ovary activation. Here we investigate the bumblebeeB. impatiensbecause it has the most extensively studied pollen/nectar specialization of any bumblebee. We show that ovary size does not differ bet
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HÅkansson, Heinrich, Rak, and Venge. "Activation of B‐lymphocytes during pollen season. Effect of immunotherapy." Clinical & Experimental Allergy 28, no. 7 (1998): 791–98. http://dx.doi.org/10.1046/j.1365-2222.1998.00295.x.

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Mahmood, Faiza, Geir Hetland, Ivo Nentwich, Mohammad Reza Mirlashari, Reza Ghiasvand, and Lise Sofie Haug Nissen-Meyer. "Agaricus blazei-Based Mushroom Extract Supplementation to Birch Allergic Blood Donors: A Randomized Clinical Trial." Nutrients 11, no. 10 (2019): 2339. http://dx.doi.org/10.3390/nu11102339.

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Since Agaricus blazei Murill (AbM) extract reduced specific IgE and ameliorated a skewed Th1/Th2 balance in a mouse allergy model, it was tested in blood donors with self-reported, IgE-positive, birch pollen allergy and/or asthma. Sixty recruited donors were randomized in a placebo-controlled, double-blinded study with pre-seasonal, 7-week, oral supplementation with the AbM-based extract AndosanTM. Before and after the pollen season, questionnaires were answered for allergic rhino-conjunctivitis, asthma, and medication; serum IgE was measured, and Bet v 1-induced basophil activation was determ
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Zheng, Yang-Yang, Xian-Ju Lin, Hui-Min Liang, Fang-Fei Wang, and Li-Yu Chen. "The Long Journey of Pollen Tube in the Pistil." International Journal of Molecular Sciences 19, no. 11 (2018): 3529. http://dx.doi.org/10.3390/ijms19113529.

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In non-cleistogamous plants, the male gametophyte, the pollen grain is immotile and exploits various agents, such as pollinators, wind, and even water, to arrive to a receptive stigma. The complex process of pollination involves a tubular structure, i.e., the pollen tube, which delivers the two sperm cells to the female gametophyte to enable double fertilization. The pollen tube has to penetrate the stigma, grow in the style tissues, pass through the septum, grow along the funiculus, and navigate to the micropyle of the ovule. It is a long journey for the pollen tube and its two sperm cells be
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HESLOP-HARRISON, J., Y. HESLOP-HARRISON, M. CRESTI, A. TIEZZI, and F. CIAMPOLINI. "Actin During Pollen Germination." Journal of Cell Science 86, no. 1 (1986): 1–8. http://dx.doi.org/10.1242/jcs.86.1.1.

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The cytoplasm of the vegetative cell of the ungerminated pollen grain of Endymton non-scriplus and other angiosperm species contains numerous fusiform bodies sometimes exceeding 15μm in length and 2.5 μm in width, which bind fluorescent-labelled phalloidin and are likely therefore to constitute a storage form of actin. The bodies are dispersed during the activation of the pollen, being replaced by aggregates of slender phalloidin-binding fibrils, which converge towards the germination apertures and are present in the emerging pollen tube. The storage bodies appear to be homologous with crystal
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Gao, Qi-Fei, Li-Li Gu, Hui-Qin Wang, et al. "Cyclic nucleotide-gated channel 18 is an essential Ca2+ channel in pollen tube tips for pollen tube guidance to ovules in Arabidopsis." Proceedings of the National Academy of Sciences 113, no. 11 (2016): 3096–101. http://dx.doi.org/10.1073/pnas.1524629113.

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In flowering plants, pollen tubes are guided into ovules by multiple attractants from female gametophytes to release paired sperm cells for double fertilization. It has been well-established that Ca2+ gradients in the pollen tube tips are essential for pollen tube guidance and that plasma membrane Ca2+ channels in pollen tube tips are core components that regulate Ca2+ gradients by mediating and regulating external Ca2+ influx. Therefore, Ca2+ channels are the core components for pollen tube guidance. However, there is still no genetic evidence for the identification of the putative Ca2+ chann
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Dissertations / Theses on the topic "Pollen activation"

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Kitaoka, Traci Kimiko. "Bumble bee pollen foraging activation role of colony stores and pollen quality and odor /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p1453656.

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Thesis (M.S.)--University of California, San Diego, 2008.<br>Title from first page of PDF file (viewed July 25, 2008). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 28-29).
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Redvall, Elin. "Human eosinophils and their activation by allergens via danger receptors." Göteborg :, 2010. http://hdl.handle.net/2077/21866.

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Vigouroux, Stéphane. "Induction de lymphocytes T régulateurs humains par activation de la voie Notch." Nantes, 2007. https://archive.bu.univ-nantes.fr/pollux/show/show?id=46a7d1f8-10e8-424c-91c3-4e9b9233a009.

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Les lymphocytes T régulateurs (LTR) sont des cellules immunosuppressives régulant la tolérance périphérique. Notch est une famille de récepteurs transmembranaires exprimés à la surface des lymphocytes jouant un rôle important dans la lymphopoïèse. L'activation de Notch est secondaire à la liaison avec son ligand Jagged1. Nous avons démontré dans 2 modèles de stimulation antigénique in vitro (virale et allogénique) que la surexpression de Jagged1 sur des lymphocytes B humains transformés par l'Epstein Barr virus (EBV) utilisées comme cellules présentatrices d'antigènes et mises en culture avec
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Peigné, Cassie-Marie. "Modalités fines d'activation antigénique des LT Vγ9Vδ2 humains : mécanismes de détection du stress cellulaire et implication de la butyrophiline BTN3A/CD277". Nantes, 2016. https://archive.bu.univ-nantes.fr/pollux/show/show?id=f2d45559-cfa5-42ae-a547-6aaf17d1ae3c.

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Chez la plupart des primates adultes, les lymphocytes T (LT) γ9δ2, représentant la majorité des LTγδ périphériques, jouent un rôle important dans la protection de l'organisme (ex. Agents infectieux, tumeurs). Des molécules activant spécifiquement les LTγ9δ2 ont été caractérisées et sont majoritairement des composés non-peptidiques phosphorylés appelés phosphoantigènes (PAg). Les PAg naturels correspondent à des métabolites de voies de synthèse des isoprénoïdes proches aux cellules procaryotes et eucaryotes. Les modalités d'activation des LTγ9δ2 induite par les PAg demeurent mal connues. Des do
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Achard, Carole. "Le virus oncolytique de la rougeole : sensibilité du mésothéliome pleural malin et activation du système immunitaire." Nantes, 2016. https://archive.bu.univ-nantes.fr/pollux/show/show?id=f2d251a0-7c4c-48bf-bcfb-f3839dd6159c.

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Au cours de ma thèse, j'ai étudié la virothérapie antitumorale basée sur l'utilisation du virus atténué de la rougeole (MV) pour le traitement du mésothéliome pleural malin (MPM). Il est décrit que le MV cible préférentiellement les cellules tumorales surexprimant son récepteur CD46 à leur surface. Suite à l'étude in vitro de 22 lignées de MPM, j'ai démontré que la sensibilité à l'infection par le MV ne dépend pas du niveau d'expression de CD46, mais de défauts de la réponse anti-virale interféron (IFN) de type I acquis pendant la tumorigenèse. Les cellules saines, capables de développer une r
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Guitton, Christophe. "Activation endothéliale et sepsis : régulation du récepteur endothélial de la protéine C et mécanismes d'action de la protéine C activée." Nantes, 2011. https://archive.bu.univ-nantes.fr/pollux/show/show?id=acf1398b-28b2-4aea-9eef-248ada029409.

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L'interaction entre les voies de la coagulation et de l'inflammation est essentielle dans les états infectieux graves. Le système de la protéine C (PC) joue un rôle majeur. Le Récepteur Endothélial de la Protéine C (EPCR), à la surface de la cellule endothéliale (CE) agit comme cofacteur d'activation de la PC par le complexe thrombine-thrombomoduline. La PC activée (PCa) a une activité anticoagulante, anti-apoptotique et anti-inflammatoire. L'EPCR est exprimée sous forme d'une protéine transmembranaire à la surface des CE (mEPCR) mais aussi sous forme soluble (sEPCR). Ce travail analyse les mé
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Fíla, Jan. "Úloha fosforylace proteinů v progamické fázi vývoje samčího gametofytu tabáku." Doctoral thesis, 2016. http://www.nusl.cz/ntk/nusl-341981.

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v angličtině (English abstract) Tobacco male gametophyte has a strongly dehydrated cytoplasm and represents a metabolically inactive stage. Upon cytoplasm rehydration, pollen grain becomes metabolically active and after the activation is finished, the pollen tube growth through a selected pollen aperture starts. The rehydration together with metabolic activation are accompanied by the regulation of translation and post-translational modifications (mainly phosphorylation) of the existing proteins. In this Ph.D. thesis, there were identified phosphopeptides from tobacco (Nicotiana tabacum) matur
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Book chapters on the topic "Pollen activation"

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Cresti, M., P. K. Hepler, A. Tiezzi, and F. Ciampolini. "Fibrillar Structures in Nicotiana Pollen: Changes in Ultrastructure During Pollen Activation and Tube Emission." In Biotechnology and Ecology of Pollen. Springer New York, 1986. http://dx.doi.org/10.1007/978-1-4613-8622-3_46.

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Willemse, M. T. M. "Pollen Coat Signals With Respect to Pistil Activation and Ovule Penetration in Gasteria Verrucosa (Mill.) H.Duval." In Fertilization in Higher Plants. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-59969-9_12.

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Durham, Stephen R., and Hesham A. Saleh. "Allergic rhinitis." In Oxford Textbook of Medicine, edited by Pallav L. Shah. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0409.

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Allergic rhinitis affects more than 20% of the population of Westernized countries and has a significant impact on quality of life and school/work performance. Important environmental factors include tree and grass pollens (seasonal allergic rhinitis); house dust mite and domestic pets, most often cats (perennial allergic rhinitis); and a variety of occupational exposures (occupational rhinitis). Pathogenesis involves activation of type 2 (Th2) lymphocytes resulting in IgE antibody production and tissue eosinophilia. Immediate symptoms (itching, sneezing, and watery nasal discharge) result from allergen cross-linking adjacent IgE molecules on the surface of mast cells in the nasal mucosa, resulting in the release of histamine and tryptase, and generation of bradykinin. Diagnosis is usually straightforward and based on the history, examination, and (when indicated) the results of skin prick tests and/or serum allergen-specific IgE levels.
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Bainbridge, William. "Introduction: Tools for Unravelling Heritage." In Topographic Memory and Victorian Travellers in the Dolomite Mountains. Amsterdam University Press, 2020. http://dx.doi.org/10.5117/9789462987616_intro.

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Collins’s theory of symbolic interactionism is here introduced to the study of landscape heritage. His method for unravelling symbols in society can be profitably used to identify a signature of prestige indicating centres of attraction or civilizational poles charged with strong magnetism. The activation of that signature occurs through three levels of social circulation that culminate in the inclusion of symbols in the internal conversation of individuals. In the case of the Dolomites, the complex cluster of symbolic ingredients emerging in their heritage formation oscillates between competing zones of civilizational prestige – Venice and its Romantic aura, Switzerland and its Alpine sensationalism, Austria and its Germanic folklore, London and its cosmopolitan modernity – coexisting today in a multi-layered heritage, re-enacted, at various levels, through the interplay between different imaginative and contested geographies.
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Conference papers on the topic "Pollen activation"

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Long Yang and J. J. Garcia-Luna-Aceves. "Node activation with polling channel access." In 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577). IEEE, 2004. http://dx.doi.org/10.1109/icc.2004.1313369.

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Noble, Frazer K., Johan Potgieter, W. L. Peter Xu, and Jen-Yuan James Chang. "Modeling and Simulation of a Bio-Mimetic, Antagonistically Actuated, Limb Joint." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62500.

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Wearable assistive devices’ (WADs) development is impeded by traditional actuators’ and control paradigms’ lack of compliance and adaptability; as such, the central nervous system’s (CNS) actuation and control principles have been investigated in order to overcome these limitations in a novel way. A bio-mimetic model of a limb joint, which is antagonistically actuated by two Hill-type muscles, is presented. Limb joint stability and transient response, as functions of co-activation, have been investigated. Three simulations have been carried out: equal (Af(f,f)), unequal (Af(3,f)), and differen
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Fiser, Jaromir, Pavel Zitek, and Jan Cerveny. "Relay Feedback Oscillator Design for Modeling Circadian Rhythms in Cyanobacteria." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64996.

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The paper introduces a relay feedback oscillator for modeling circadian rhythms in cyanobacteria. The relay feedback oscillator is equipped with low pass filter F(jω), hysteresis-type relay and negative feedback. This negative feedback represents an autoregulatory mechanism of the circadian clock and the notion of this autoregulatory mechanism is based on the well-known Goodwin biochemical oscillator [1]. The relay is responsible for the mediation of both the activation and degradation of oscillator state variables (protein concentrations) and in this way the pacemaker is constituted. Later on
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Arentoft, Jesper, and Martin Kristensen. "Low Activation Energy for Decay of Stable Electro-Optic Effect in Poled Glass." In Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides. OSA, 1999. http://dx.doi.org/10.1364/bgpp.1999.db4.

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Stein, David, and Gregory S. Chirikjian. "Experiments in the Commutation and Motion Planning of a Spherical Stepper Motor." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/mech-14115.

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Abstract This paper addresses the commutation and motion planning of a spherical stepper motor in which the poles of the stator are electromagnets and the poles of the rotor (rotating ball) are permanent magnets. The stator only overlaps a very small area of the rotor, leading to a design that has a much wider range of unhindered motion than other spherical stepper motors in the literature. The problem with having a small stator is that it makes commutation and motion planning a difficult problem. We first explore the techniques and model used to construct the proper sequence of stator activat
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Diemont, B., M. Maranzana, C. Orizio, R. Perini, and A. Veicsteinas. "A study of motor unit activation pattern by an all poles model of the muscular sound." In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 1988. http://dx.doi.org/10.1109/iembs.1988.94925.

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Cramer, Elisabeth M., F. John, William Vainchenker, and Janine Breton-Gorius. "PRODUCTION AND LOCALISATION OF ALPHA-GRANULE PROTEINS IN MATURING MEGAKARYOCYTES: AN OVERVIEW ON ULTRA-STRUCTURAL ASPECTS OF MEGAKARYOCYTE MATURATION." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1642952.

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In order to study the production of α- granule proteins in maturing megakaryocytes, we used immunocytochemical techniques performed on cultured and enriched bone marrow megakaryocytes. Cultures were prepared from bone marrow CFU-MK with the methylcellulose and plasma clot techniques. Preparation of bone marrow megakaryocytes was carried out from human or pig rib marrow separated on percoll gradient and counterflow centrifugation. Megakaryocyte preparations were 90$ pure and represented 85$ of those in the whole marrow. Activation was prevented with prostacyclin and prefixation with low concent
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