Dissertations / Theses on the topic 'Affen'
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Uhl, Dorothee. "Untersuchung zur funktionellen Bedeutung von VDAC in weiblichen Gameten des Rindes und des Marmoset-Affen." Giessen : VVB Laufersweiler, 2008. http://d-nb.info/989910423/34.
Full textRefisch, Johannes. "Einfluß der Wilderei auf Affen und die sekundären Effekte auf die Vegetation im Taï-Nationalpark, Elfenbeinküste /." Bayreuth : Selbtsverl. des Bayreuther Institutes für Terrestrische Ökosystemforschung, 2001. http://www.gbv.de/dms/bs/toc/347265804.pdf.
Full textAdemoglu-Chamza, Bahar [Verfasser], and Barbara [Akademischer Betreuer] Braunger. "Identifizierung BrdU positiver Zellen im Trabekelwerk des Affen Hinweis auf mögliche Trabekelwerksstammzellen? / Bahar Ademoglu-Chamza. Betreuer: Barbara Braunger." Regensburg : Universitätsbibliothek Regensburg, 2015. http://d-nb.info/1075642159/34.
Full textRose, Karin. "Speziesspezifische proteomische Aspekte der axonalen Regeneration retinaler Ganglienzellen am Beispiel der Ratte (Rattus norvegicus) und des Affen (Callithrix jacchus)." [S.l.] : [s.n.], 2004. http://archiv.ub.uni-marburg.de/diss/z2004/0695/.
Full textUhl, Dorothee [Verfasser]. "Untersuchung zur funktionellen Bedeutung von VDAC in weiblichen Gameten des Rindes und des Marmoset-Affen / eingereicht von Dorothee Uhl." Giessen : VVB Laufersweiler, 2008. http://d-nb.info/989910423/34.
Full textKlippert, Antonina [Verfasser], and Gerd [Akademischer Betreuer] Sutter. "Untersuchungen zur Bedeutung der akzessorischen Gene nef und vpr des Affen-Immundefizienz-Virus bei der Immunpathogenese in infizierten Makaken / Antonina Klippert. Betreuer: Gerd Sutter." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2016. http://d-nb.info/1088318169/34.
Full textNaumann, Nedye [Verfasser], and F. [Akademischer Betreuer] Czubayko. "Einfluss der SIV-Infektion und einer antiretroviralen Therapie auf die Expression von vesikulären Transmitterproteinen im Striatum von Rhesus Affen / Nedye Naumann. Betreuer: F. Czubayko." Marburg : Philipps-Universität Marburg, 2015. http://d-nb.info/1081215720/34.
Full textLoosen, Stephanie van [Verfasser]. "Die Immunschwäche der Katze Eine zeitgeschichtlich-vergleichende Literaturstudie zur Infektion mit dem FIV (Feline Immunodeficiency Virus) der Katzen, der HIV-Infektion des Menschen und der SIV-Infektion der Affen / Stephanie van Loosen." Hannover : Bibliothek der Tierärztlichen Hochschule Hannover, 2010. http://d-nb.info/1004172729/34.
Full textWiese, Kristina [Verfasser], and Solon [Akademischer Betreuer] Thanos. "Entwicklungsabhängige Expression von regenerationsspezifischen Proteinen in der Netzhaut des Affen Callithrix jacchus und der Einfluss des ROCK-Inhibitors Y-27632 auf das axonale Wachstum der RGC in Marmosetaffen und Ratten / Kristina Wiese. Betreuer: Solon Thanos." Münster : Universitäts- und Landesbibliothek der Westfälischen Wilhelms-Universität, 2012. http://d-nb.info/1027019161/34.
Full textFredenhagen, Sigrid. "Nichtlineare Spline-Kurven unter affin-linearen Restriktionen." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963603175.
Full textChristophe, Jean. "Le polytope des sous-espaces d'un espace affin fini." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210798.
Full textDoctorat en sciences, Spécialisation mathématiques
info:eu-repo/semantics/nonPublished
Panayides, Aliki Maria. "Von Affe bis Zebu : Tierdarstellungen und Tierverständnis im Hellenismus /." [S.l.] : [s.n.], 1997. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.
Full textBurgard, Stefan [Verfasser], and Romanus [Akademischer Betreuer] Dyczij-Edlinger. "Effiziente Methoden der parametrischen Ordnungsreduktion für affin und nicht-affin parametrierte Modelle mit Anwendungen in der Finite-Elemente-Simulation von Mikrowellenstrukturen / Stefan Burgard. Betreuer: Romanus Dyczij-Edlinger." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2014. http://d-nb.info/1053983743/34.
Full textStenzel, Petra-Sibylle. "Affe, Kolibri und Spinne – die Geoglyphen im Wüstensand von Nasca." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-66303.
Full textLaaroubi, Khalid. "Étude biochimique et moléculaire du facteur de croissance heparin affin regulatory peptide (HARP)." Paris 12, 1995. http://www.theses.fr/1995PA120013.
Full textRousse, Pascal. "Penser le montage avec Sergueï Mikhaïlovitch Eisenstein : architectonique et affet : de l'architecture aux arts contemporains." Paris 8, 2010. http://octaviana.fr/document/150172176#?c=0&m=0&s=0&cv=0.
Full textAccording to Eisenstein, montage is an anamnesis of the "imagicity" of perception. This raises the question of the "other scene" of the unconscious : the theatricality and the spatializing of the affect between Eros and Thanatos in Freud. The aesthetic Idea of montage connotes construction, but also its criticism and its architectonic transformation, between image and language, towards an artistic constructivism which is contemporary to us. Eisenstein's labyrinthine writing brings him close to Joyce's inner monologue, a figural space of a global eidetic image, of which architecture is the displaced metonymy, the deconstructed substratum and the index of writing. The figures evoked return to the Greek mètis, as technical intelligence. With cinematographic apparatus, according to Jean-Louis Déotte, the masses address themselves to political actives. According to Walter Benjamin, distraction is the collective and unconscious substratum of perception in the urban medium. Following Eisenstein, the spectator reaches via it to the ek-static transfer by a provocation of the emotional experience of space, in a dialectic of the pathetic and the ecstasy : it means binding the death instinct to the life instinct and, ever since the Ethic by Spinoza, the salvation of the Ideas of reason in front of the uncontrollable. But how does the trial of the indeterminate occur in this cinema to present that is unpresentable ? In what does Eisenstein testifies to the Idea of justice and the sublime ? It will be a question of opening the present to the anachrony of archaic figures, through allegorical forms capable of deciphering between madness and utopia
Steyn, Taryn Samantha. "The role of gender in the relationship between emotional intelligence and psychological well–being / Taryn S. Steyn." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4932.
Full textThesis (M.Sc. (Clinical Psychology))--North-West University, Potchefstroom Campus, 2011.
Adamson, Jasper. "Dimensionality-property relationships in functional hexahydroxytriphenylene- and cyanide-containing materials." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:e6f6b877-fc37-43ac-affe-f4dc090a4fa0.
Full textBowman, Anna. "Interim spaces : reshaping London : the role of short life property, 1970 to 2000." Thesis, University of Bristol, 2004. http://hdl.handle.net/1983/595c8531-65c2-46b6-affe-b03ff9444253.
Full textBurchardt, Birgit [Verfasser]. "Erstellung von Interspezieschimären mit induzierten pluripotenten Stammzellen (iPSCs) von Maus, Schwein und Affe / Birgit Burchardt." Hannover : Bibliothek der Tierärztlichen Hochschule Hannover, 2017. http://d-nb.info/113615289X/34.
Full textRuddat, Helge P. "Partielle Auflösung eines torischen log-Calabi-Yau-Raumes." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:25-opus-61622.
Full textPervez, Affan [Verfasser], Dongheui [Akademischer Betreuer] Lee, John [Gutachter] Folkesson, and Dongheui [Gutachter] Lee. "Task parameterized robot skill learning via programming by demonstrations / Affan Pervez ; Gutachter: John Folkesson, Dongheui Lee ; Betreuer: Dongheui Lee." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1173322744/34.
Full textBailey, Nigel J. "ANSA bridged metallocene chemistry of niobium." Thesis, University of Oxford, 1998. http://ora.ox.ac.uk/objects/uuid:9bd76a85-ba44-42d8-affe-317bc98be368.
Full textBernard-Pierrot, Isabelle. "Mise en évidence de déterminants structuraux impliqués dans les activité biologiques du facteur de croissance HARP (Heparin affin regulatory peptide)." Paris 11, 2002. http://www.theses.fr/2002PA11T027.
Full textHeparin-binding Growth-associated Molecule (HB-GAM) is a heparin-binding molecule involved in neurite outgrowth and is closely related the mammalian produced growth factors Pleiotrophin or HARP reported to stimulate proliferation of several cell types including endothelials. Here, we report that HB-GAM inhibited the biological activity induced by the 165-amino acid form ofvascular endothelial growth factor (VEGF165) on human umbilical vein endothelial cells (HUVEC). Endothelial-cell proliferation induced by VEGFI65 showed about 50% inhibition in the presence of HB-GAM in a concentration of 2. 7 nM (ICso). In similar concentrations, HB-GAM blocked HUVEC migration and tube formation induced by VEGF165 in three-dimensional angiogenesis assays. In addition, HB-GAM inhibited binding of 125I-VEGF l65 to the VEGF receptors of HUVEC (IC50 : 35 nM). Additional studies using heparan sulfate deficient CHO cells that overexpressed VEGF receptors indicated that binding of 125I-VEGF165 to fms-like tyrosine kinase-1 receptor, kinase insert domaincontaining receptor and neuropilin receptor was inhibited by HB-GAM with an IC50 in the nanomolar range. We then investigated the mechanisms of this inhibition. Using a solid-phase ligand-binding assay, we found that HB-GAM interacted directely with VEGF165, with a dissociation coefficient of 1. 38 nM. Further studies indicated that the two HB-GAM -sheet domains containing the thrombospondin type-1 repeats were involved in this interaction
Héroult, Mélanie. "Etude de la modélisation de l'angiogénèse par le facteur de croissance "Heparin Affin Regulatory Peptide" : implication dans les pathologies arthritiques." Paris 12, 2002. http://www.theses.fr/2002PA120002.
Full textBouderlique, Thibault. "Etude des propriétés ostéoinductrices et chondroinductrices de "l'Heparin affin regulatory peptide" sur les cellules stromales mésenchymateuses humaines, application en régénération osseuse." Phd thesis, Université Paris-Est, 2012. http://tel.archives-ouvertes.fr/tel-00904131.
Full textXu, Meide [Verfasser]. "Rebhuhn, Affe und Elefant: : Die Tierfabeln des Avadāna und des Vinaya, analysiert auf Grund ihrer chinesischen Übersetzungen / Meide Xu." Düren : Shaker, 2019. http://d-nb.info/1190526026/34.
Full textElahouel, Rania. "Le Fibroblast Growth Factor 2 ( FGF-2 ) et la neuropiline-1 (NRP-1) : nouveaux partenaires moléculaires de Heparin Affin Regulatory Peptide ( HARP)." Thesis, Paris Est, 2012. http://www.theses.fr/2012PEST0066.
Full textHARP (Heparin Affin regulatory peptide) is a growth factor that constitutes with midkine a subfamily of Heparin Binding Growth Factors (HBGFs). HARP is involved in many physiological processes such as neurogenesis and vasculogenesis but also in pathophysiological processes such as angiogenesis and tumor progression. HARP interacts with different receptors (N-syndecan, RPTPβ / ζ and ALK). More recently, it has been shown in the laboratory that nucleolin, a protein shuttle between the nucleus, cytoplasm, and cell surface, is a new HARP receptor. Despite the advances in this field, the interaction of HARP with its receptors is not fully understood. The aim of this thesis was the search for new molecular partners that interact with HARP, to understand the mechanism of their interaction and analyze the biological effects. My work was firstly to participate to the study of the interaction of HARP with the fibroblast growth factor-2, FGF-2. This factor is also an heparin-binding factor, with mitogenic and angiogenic activities. Using techniques of optical biosensors and protein-protein interaction, we have shown a direct interaction between HARP and FGF-2 that involves C-TSR-I and C-terminus domains of HARP. In addition, HARP inhibits the migration and proliferation of endothelial cells induced by FGF-2. In parallel, I highlighted the interaction between HARP and NRP-1. NRP-1 is a transmembrane protein having as main ligands, semaphorins class 3 (SEMA 3A), the vascular endothelial growth factor (VEGF) and FGF-2. In addition to its crucial role in the development of the nervous and cardiovascular systems, the NRP-1 is involved in physiopathological processes such as angiogenesis and tumor invasion. Thus, NRP-1 has a biological profile similar to HARP. Using ELISA, immunoprecipitation and "pull-down" tests, we have shown that HARP interacts with NRP-1. This interaction appears to be direct and occurs via heparin binding domains of HARP: TSR-I. HARP induces internalization of NRP-1 after 15 minutes and partial recycling to the cell surface after one hour. The internalization of the NRP-1 is accompanied by the phosphorylation of MAPK pathways (ERK1 / 2), Akt and FAK. HARP/NRP-1 interaction is crucial for endothelial cell migration and invasion of tumor cells. In conclusion, these results provide new advances on molecular partners of HARP in particular and also show the complexity of the interactions between these growth factors and their receptors. More generally, this study allows considering therapeutic strategies targeting the interaction of NRP-1 with HARP as well as other growth factors
Vacherot, Francis. "Étude de l'activité mitogène du facteur de croissance Heparin Affin Regulatory Peptide (HARP) et de son implication dans la physiologie et la physiopathologie de la prostate." Paris 12, 1996. http://www.theses.fr/1996PA120020.
Full textSchröck, Evelin, P. Zschieschang, Peter O’Brien, Anne Helmrich, T. Hardt, A. Matthaei, and Karen Stout-Weider. "Spectral karyotyping of human, mouse, rat and ape chromosomes – applications for genetic diagnostics and research." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-137653.
Full textDieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich
Schröck, Evelin, P. Zschieschang, Peter O’Brien, Anne Helmrich, T. Hardt, A. Matthaei, and Karen Stout-Weider. "Spectral karyotyping of human, mouse, rat and ape chromosomes – applications for genetic diagnostics and research." Karger, 2006. https://tud.qucosa.de/id/qucosa%3A27746.
Full textDieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
Dos, Santos Célia. "Implication de la région C-terminale de l'Héparin Affin Regulatory Peptide (HARP) dans l'inhibition de la prolifération des glioblastomes et mise en évidence d'interactions entre ce facteur de croissance et d'autres Heparin Binding Growth Factors (HBGFs)." Paris 11, 2010. http://www.theses.fr/2010PA11T082.
Full textPichon, Maëva. "Conception et synthèse d’iminosucres multivalents bioactifs à motif glycoimidazole : développement d’une méthode de déshydroxylation sélective." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAF054.
Full textMultivalency is known to be a tool to drive inhibitors more potent. The multivalent effect, evidenced in 2010 with multivalent iminosugar on glycosidase inhibition, paved the way to the synthesis of multimeric inhibitors even more powerful. In 2016, an iminosugar cluster was reported to be 173 000 times more potent inhibitor compared to the monovalent reference. This is equal to an inhibitory potency enhancement of 4800 per iminosugar. The goal of my PhD was the synthesis of a new generation of multivalent iminosugars very potent towards their target, to keep increasing multivalent effect. New multivalent iminosugars with glycoimidazole motifs, with high affinity towards mannosidases, were synthetised. Those multivalent compounds allowed us to work on two parallel projects: a fundamental and an applied one. The first one focused on the influence of ligand affinity on multivalent effect by measuring the inhibition potency on the most sensitive to multivalent effect commercially available enzyme: the Jack-bean α-mannosidase. Results showed that multivalent effect was maintained but at a lower level than those reported previously. Multivalent iminosugars being also able to target glycosidases of therapeutic interest, we were interested in the treatment of cystic fibrosis. Targeting endoplasmic reticulum mannosidases I and II could restore the CFTR protein whose deficiency is the root cause of the disease. Unfortunately, no corrective or potentiation effect were observed. Aside those principal lines, a selective dehydroxylation method was optimized and developed widening the scope and providing mechanistic proofs
Hassan, Nazir Ahmed. "An investigative study on the affect and concerns of mathematics student teachers with special reference to social-context based learning packages / Nazir Ahmed Hassan." Thesis, North-West University, 2013. http://hdl.handle.net/10394/8698.
Full textThesis (PhD (Mathematics Education))--North-West University, Potchefstroom Campus, 2013
Schäfer, Silke. "Die Effekte von K-111, einem Antidiabetikum, auf Leberperoxisomen der Cynomolgus-Affen /." 2004. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=013138722&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textBaumeister, Volker. "Heilungsverlauf der Entnahmestelle von freien Schleimhaut- und Bindegewebstransplantaten im Gaumen : eine histologische und histometrische Studie am Affen." Doctoral thesis, 2003. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-10649.
Full textThe use of free gingival grafts and free connective tissue grafts in periodontology, perio-prosthesis and implantology widens the treatment options in today's esthetic dentistry. Whereas the healing process in the recipient sites of such grafts is already well known, only little attention has been given so far to the wound healing in the donor sites. This study describes the temporal and spatial wound healing process in palatal donor sites after harvesting free gingival grafts and free connective tissue grafts with denudation of bone. Cynomolgous monkeys (Macaca fascicularis) were used for this investigation. The formation of granulation tissue, connective tissue and epithelium and the bony reactions were histologically described and histometrically measured 2 weeks, 1, 3, and 6 months after graft harvesting. The unoperated contralateral palatal side served as negative control. Exposition of bone leads to significant delays in wound healing and to changes in bone architecture. After an initial resorption, hyperplasia of bone persisted over 6 months. The soft tissue healing resulted in a highly differentiated scar tissue. A restitutio ad integrum did not take place. To prevent the risk of bone denudation, minimally invasive surgical techniques with primary closure of the donor site should be the first choice for harvesting free gingival grafts and free connective tissue grafts
Depboylu, Candan. "Die zellulären Reaktionen des Gehirns von Rhesus Affen auf die SIV-Infektion und der Einfluß einer antiretroviralen Therapie /." 2003. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=012933664&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textKuhnert, Stefan [Verfasser]. "Quantitative Bestimmung von ZPA-, ZPB- und ZPC-mRNA in Oozyten unterschiedlicher Follikelgröe des Marmoset-Affen / vorgelegt von Stefan Kuhnert." 2007. http://d-nb.info/986843423/34.
Full textTriantafyllou, Georgios [Verfasser]. "Untersuchungen zur Morphologie, Größe und Verteilung der retinalen Ganglienzellen im Auge des Affen Macaca fascicularis / vorgelegt von Triantafyllou, Georgios." 2010. http://d-nb.info/1005142521/34.
Full textBaumeister, Volker [Verfasser]. "Heilungsverlauf der Entnahmestelle von freien Schleimhaut- und Bindegewebstransplantaten im Gaumen : eine histologische und histometrische Studie am Affen / vorgelegt von Volker Baumeister." 2004. http://d-nb.info/972768645/34.
Full textVolk, Gerd Fabian [Verfasser]. "Geschwindigkeitsmessung axonaler Regeneration retinaler Ganglienzellen am Beispiel des Affen (Callithrix Jacchus) und der Ratte (Rattus Norvegicus) in vitro / vorgelegt von Volk, Gerd Fabian." 2007. http://d-nb.info/988238713/34.
Full textRose, Karin [Verfasser]. "Speziesspezifische proteomische Aspekte der axonalen Regeneration retinaler Ganglienzellen am Beispiel der Ratte (Rattus norvegicus) und des Affen (Callithrix jacchus) / vorgelegt von Karin Rose." 2004. http://d-nb.info/973888873/34.
Full textSpahr, Carina. "Investigations on the occurrence of infections with hepatitis E virus and related viruses in zoo animals." 2019. https://ul.qucosa.de/id/qucosa%3A38886.
Full textEinleitung Hepatitis E ist eine durch das Hepatitis E-Virus (HEV) verursachte, weltweit verbreitete Erkrankung. Neben dem Menschen können Hausschwein, Wildschwein, Kaninchen und Dromedar als Reservoirtiere subklinisch mit den zoonotischen HEV-Genotypen 3, 4 und 7 infiziert werden. Darüber hinaus wurden HEV und HEV-ähnliche Viren vereinzelt bei weiteren Säugetieren, sowie Vögeln und Fischen beschrieben, wobei deren genaue Rolle als Reservoir oder Überträger des Virus bislang unklar ist. Ziele Ziel der Arbeit war es deshalb, die Bedeutung verschiedener Säugetierarten, die nicht zu den bekannten HEV-Reservoiren gehören, für die Epidemiologie der HEV-Infektionen besser zu erfassen und dadurch das Risiko einer Virusübertragung durch diese Tierarten besser abzuschätzen. Material und Methoden Vierzehn Affenarten und 66 weitere Säugetierarten, sowie Wanderratten (Rattus norvegicus) und Futterratten (Rattus norvegicus forma domestica) aus deutschen Zoos wurden für die Untersuchungen ausgewählt. Insgesamt wurden 259 individuelle Affenseren und 244 individuelle Säugerseren klinisch gesunder Zootiere mittels eines Spezies-unabhängigen Doppel-Antigen-Sandwich-ELISAs auf das Vorhandensein von HEV-spezifischen Antikörpern (AK) untersucht. Die Affenseren wurden zusätzlich mittels eines kommerziellen humanen ELISAs untersucht. Real-time reverse-transcription (RT)-PCR, nested broad-spectrum RT-PCR sowie eine Ratten-HEV-spezifische RT-PCR wurden für den HEV-Genomnachweis in Seren der Säuger und in Ratten-Lebern verwendet. Für die DNA-Sequenzierungen wurden eine kommerzielle und eine In-house-Methode verwendet. Ergebnisse In 3,9% (10/259) der Affenseren (4 Arten) und 11,5% (28/244) der Säugerseren (16 Arten) wurden HEV-spezifische AK nachgewiesen. Die höchsten Nachweisraten wurden mit 33,3% (9/27) in Schweineartigen und 27,0% (10/37) in Fleischfressern ermittelt. HEV-RNA wurde in einer klinisch gesunden Syrischen Braunbärin (Ursus arctos syriacus), sowie in 8 der untersuchten Wanderratten nachgewiesen. Die Sequenzanalyse identifizierte das Virus als Ratten-HEV; die Viren aus der Bärin und aus den wildlebenden Ratten desselben Zoos zeigten eine hohe Nukleotidsequenz-Identität (94,6%–97,8%). Weitergehende statistische Auswertungen wurden wegen der geringen Probenzahlen aufgrund der kleinen Populationen innerhalb der einzelnen Zoos nicht durchgeführt. Schlussfolgerungen Die Ergebnisse zeigen, dass Affen in Zoos mit HEV oder HEV-ähnlichen Viren infiziert sein können, jedoch sprechen die geringen AK-Nachweisraten zusammen mit den negativen Genomnachweisen gegen ein hohes Übertragungsrisiko auf den Menschen. Die Studie an anderen Säugetierarten in Zoos konnte die Zahl der Tierarten mit Hinweisen auf HEV-Infektionen deutlich erhöhen. Bei den meisten Tierarten lagen nur seltene Nachweise und niedrige Detektionsraten vor, die am besten durch „Spillover-Infektionen“ erklärt werden können. Neben der erwarteten hohen Nachweisrate bei Schweineartigen ist der hohe Prozentsatz an HEV AK-positiven Fleischfressern bemerkenswert, weshalb deren Rolle als mögliche HEV-Reservoirtiere in weiteren Untersuchungen geklärt werden sollte. Der Ratten-HEV-Nachweis im Serum der Bärin, sowie dessen hohe Nukleotidsequenz-Identität zu den HEVs der Schadnager geben erstmals Hinweise auf eine Übertragung dieser Virusart zwischen Nagern und Fleischfressern.:List of content List of figures List of tables List of abbreviations 1 General introduction 1.1 Discovery of HEV 1.2 Taxonomy 1.3 Morphology 1.4 Genomic organisation 1.5 Viral replication 1.6 Hepatitis E in humans 1.7 Tools for HEV diagnosis 1.8 Therapy 1.9 Animal infections with HEV and HEV-like viruses 1.10 Experimental infections of animals 1.11 Geographical distribution 1.12 Transmission pathways 1.13 Epidemiology 1.14 Prevention 2 Aims of the study 3 Publications 3.1 Publication I 3.1.1 Summary of Publication I 3.1.2 Key messages of Publication I 3.1.3 Own contribution to Publication I 3.2 Publication II 3.2.1 Summary of Publication II 3.2.2 Key messages of Publication II 3.2.3 Own contribution to Publication II 3.3 Publication III 3.3.1 Summary of Publication III 3.3.2 Key messages of Publication III 3.3.3 Own contribution to Publication III 4 General discussion 4.1 HEV infections in various animal species 4.2 Prevalence of natural HEV infections in non-human primates 4.3 Prevalence of natural HEV infections in other zoo-housed mammals 4.4 Transmission pathways of HEV in a zoo-setting 4.5 Risk of virus transmission from zoo animals to humans 5 Conclusion and perspectives 6 Summary 7 Zusammenfassung 8 References List of animals investigated in the study List of publications Acknowledgements
Fredenhagen, Sigrid [Verfasser]. "Nichtlineare Spline-Kurven unter affin-linearen Restriktionen / vorgelegt von Sigrid Fredenhagen." 2001. http://d-nb.info/963603175/34.
Full textΔρόσου, Γεωργία. "Μελέτη του ρόλου του αυξητικού παράγοντα HARP (Heparin Affin Regulatory Peptide) στην αγγειογένεση in vivo." Thesis, 2007. http://nemertes.lis.upatras.gr/jspui/handle/10889/753.
Full textHeparin-affin regulatory peptide (HARP), also known as pleiotrophin or heparin-binding growth-associated molecule, is an 18 kDa growth factor that has a high affinity for heparin. HARP is involved in the control of cellular proliferation, migration and differentiation. Moreover, there is a strong correlation between HARP expression and tumor growth and angiogenesis. In the present work, we studied the expression of HARP and its receptors, ALK and RPTPβ/ζ, during development of the chicken embryo chorioallantoic membrane (CAM), in relation to angiogenesis. By western blot analysis and RT-PCR, it was shown that HARP, ALK and RPTPβ/ζ expression increased at days of on-going angiogenesis and decreased at later time points. Transfection of CAMs with an anti-sense HARP gene construct led to a significant decrease in HARP amounts compared to vector control transfected CAMs, a significant decrease in the length of CAM blood vessels, and a decrease in the phosphorylation of Erk1/2. Contrary, transfection of CAMs with the anti-sense HARP gene construct had no influence in lymphangiogenesis of the chicken embryo chorioallantoic membrane (CAM). These data suggest that endogenous HARP is involved in angiogenesis in vivo.
Τριπολιτσιώτη, Δήμητρα. "Ο αυξητικός παράγοντας HARP (Heparin Affin Regulatory Peptide) ενεργοποιεί έμμεσα τον υποδοχέα ALK (Anaplastic Lymphoma Kinase)." 2013. http://hdl.handle.net/10889/6264.
Full textHARP (Heparin Affin Regulatory Peptide) is a heparin-binding growth factor, involved in the regulation of cell differentiation, cell proliferation as well as in angiogenesis. Elevated concentrations of HARP have been detected in malignancies, in cancer cell lines, as well as in the plasma of patients with different types of cancer. It is also known that HARP is substrate for different proteases of the cell microenvironment, leading to the production of biological active peptides which can exert similar or even opposite biological activities to HARP. HARP exerts its biological actions after binding to the transmembrane receptors SDC3, RPTPβ/ζ and ALK. Even though ALK has been defined as a functional HARP receptor, contradictory results have been published concerning HARP-ALK interaction. In the present work, we studied the interaction of HARP growth factor with ALK transmembrane receptor using PC3 prostate cancer cells. It was shown that HARP induces the phosphorylation of ALK in PC3 cells, however no effect on ALK activation was observed in PC3 cells after RPTPβ/ζ knockdown. We also used recombinant gst-fused peptides corresponding to various fragments of HARP [P(9-110), P(9-59), P(60-110)] which result after cleavage with plasmin. After GST pull-down assays it was shown that ALK strongly binds to the P(60-110), result that was also taken after RPTPβ/ζ knockdown. Cumulatively, our results indicate that HARP-induced ALK phosphorylation is mediated by RPTPβ/ζ. It is also demonstrated that HARP interacts biochemically with ALK, since P(60-110) strongly binded both species of ALK (220 and 140 kDa).
Vo, Thai Dan. "Assessing genetic diversity in Vietnam tea [Camellia sinensis (L.) O. Kuntze] using morphology, inter-simple sequence repeat (ISSR) and microsatellite (SSR) markers." Doctoral thesis, 2007. http://hdl.handle.net/11858/00-1735-0000-0006-AFFE-8.
Full textΠολυκράτης, Απόστολος. "Μελέτη της βιολογικής δράσης και του μηχανισμού μεταγωγής σήματος του αυξητικού παράγοντα HARP (Heparin Affin Regulatory Peptide) σε ενδοθηλιακά κύτταρα." 2005. http://nemertes.lis.upatras.gr/jspui/handle/10889/266.
Full textHeparin affin regulatory peptide (HARP) is an 18 kDa growth factor that has a high affinity for heparin. HARP is highly conserved among species and shares 50% homology with Midkine and RI-HBP. The above proteins constitute a relatively new family of growth factors with high affinity for heparin. HARP has been originally purified from perinatal rat brain as a molecule that induces neurite outgrowth. HARP is also expressed in uterus, cartilage and bone extracts. Several reports have established a strong correlation between HARP expression and tumour growth and angiogenesis. High levels of this protein were found in many human cancers and cell lines derived from human tumours. HARP has been reported to be mitogenic for different types of endothelial cells and angiogenic in vivo and in vitro. HARP exerts its biological activity through interactions with cell surface proteoglycans, such as N-syndecan, or binding to more specific cell surface receptors. Receptor-type protein tyrosine-phosphatase β/ζ (RPTPβ/ζ) and its secreted variant phosphacan, as well as ALK, have been recently reported to bind HARP and to be implicated in its signalling.HARP has been previously shown to activate both the MAPK and PI3K - Akt signalling axes. Inhibitors of Erk½ or PI3K inhibit DNA synthesis stimulated by HARP. Additionally, analysis of tyrosine phosphorylated proteins following HARP stimulation, revealed induction of Shc and Erk ½ phosphorylation. Nevertheless, the signals from specific receptors to PI3K or MAPK are not well documented. In the present work, we examined the effect of HARP on migration and tube formation on matrigel of HUVEC and investigated the signalling pathway induced by HARP. We report that HARP induces migration and differentiation of endothelial cells through binding to RPTPβ/ζ, leading to activation of Src, FAK, PI3K and Erk½. Sodium orthovanadate, chondroitin sulfate-C, PP1, wortmannin, LY294002 and U0126 inhibit HARP-mediated signalling and HARP-induced HUVEC migration and differentiation. In addition, RPTPβ/ζ suppression using siRNA technology, interrupts intracellular signals, as well as HUVEC migration and differentiation that are induced by HARP. These results establish the role of RPTPβ/ζ as a receptor of HARP in HUVEC and elucidate the HARP signalling pathway in endothelial cells.
Κίτσου, Παρασκευή. "Η συνδεκάνη-3 διαμεσολαβεί τις βιολογικές δράσεις της HARP." Thesis, 2011. http://nemertes.lis.upatras.gr/jspui/handle/10889/4761.
Full textHARP (Heparin Affin Regulatory Peptide), also known as Pleiotrophin, is a growth factor involved in several biological actions such as induction of cellular proliferation, migration and angiogenesis. Elevated concentrations of this growth factor are found in many tumours, as well as in the plasma of patients with different types of cancer. HARP exerts its actions after binding to the transmembrane receptors RPTP β/ζ, ALK and N-Syndecan (SDC3). In the present work, we studied the role of the transmembrane receptor SDC3 in the biological actions of HARP. We used DU145 and PC3 transiently transfected with specific siRNA to downregulate the accumulation of SDC3. Our results show that HARP binds to SDC3 and induces the cell adhesion and migration of DU145 and PC3 cells. We also studied the signal transduction through SDC3 receptor and the activation of signaling molecules such as Src, Fak, Akt, Pten and Erk 1/2. Our results revealed that HARP induces the phosphorylation of Src kinase, Fak and Erk1/2 after binding to SDC3 in both DU145 and PC3 cells. Also, HARP increases Akt signaling cascade in PC3 cells, while it suppresses the signaling cascade induced by PTEN in DU145 cells. Consequently, HARP interaction with SDC3, results in the activation of SDC3, which in turn triggers a signal transduction pathway that leads to specific biological cell responses activates other cytoplasmic effectors. Therefore, there starts a signaling cascade that targets specific genes and cell response. In conclusion, our results indicate that SDC3 contributes, as a positive regulator, to HARP-dependent cell adhesion and migration in both DU145 and PC3 cells.
Ηλιάδου, Ελένη. "Σχεδιασμός, σύνθεση και μελέτη βιολογικών δράσεων πεπτιδίων της HARP." Thesis, 2010. http://nemertes.lis.upatras.gr/jspui/handle/10889/3209.
Full textHeparin affin regulatory peptide (HARP) is an 18 kDa growth factor that has a high affinity for heparin. HARP is highly conserved among species and shares 50% homology with Midkine and RI-HBP. The above proteins constitute a relatively new family of growth factors with high affinity for heparin. HARP has been originally purified from perinatal rat and bovine brain as a molecule that induces neurite outgrowth. HARP is also expressed in uterus, cartilage and bone extracts. Several reports have established a strong correlation between HARP expression and tumour growth and angiogenesis. HARP has been reported to be mitogenic for different types of endothelial cells and angiogenic in vivo and in vitro. HARP exerts its biological activity through interactions with cell surface proteoglycans, such as N-syndecan, or binding to more specific cell surface receptors. Receptor-type protein tyrosine-phosphatase β/ζ (RPTPβ/ζ) and its secreted variant phosphacan, as well as ALK are implicated in HARP signalling. The main target of this study is to investigate the structure and the biological activities of HARP, using smaller fragments of HARP which are biotinylated in order to study its further activities, the mechanisms and the interactions with the receptor. Biotin-labelled peptides are extremely useful tools for biochemistry, with applications in solid-phase immunoassays, affinity purification and receptor localization. The synthetic peptides of HARP were synthesized by Fmoc/t-Bu solid phase methodology utilizing a 2-chlorotrityl-chloride resin to provide a free NH2- amino-group and carboxyl acid, respectively. The simplest approach for the production of biotin-labelled peptides involves capping of a resin-bound free amino group with biotin, prior to cleavage of the peptide from the resin and side-chain deprotection. Because of the poor solubility of biotin in peptide synthesis solvents, biotin is most frequently introduced using a pre-formed active ester, such as biotin p-nitrophenyl ester. The synthetic peptides, P(13-39) and P(65-97) with amino acids sequence corresponding to the N- and C-TSR-I domains of HARP, were studied for their impact to the proliferation and chemotactic (migration) on prostate cancer cells (PC3).