Dissertations / Theses on the topic 'Prostaglandines – Synthèse'
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Alphand, Véronique. "Synthèse de lactones optiquement activés par réaction de Baeyer-Villiger microbiologique." Aix-Marseille 2, 1990. http://www.theses.fr/1990AIX22020.
Full textBoucher-Kovalik, Sofia. "Caractérisation de l'expression des enzymes de biosynthèse des prostaglandines dans des lignées cellulaires endométriales immortalisées." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/27822/27822.pdf.
Full textDas, Saibal. "Synthèse de prostaglandines et nouvelles utilisations de liquides ioniques comme solvants." Rennes 1, 2007. http://www.theses.fr/2007REN1S044.
Full textThis thesis is divided in 5 parts: - The first chapter is an extensive bibliographical study of the synthesis of Prostaglandins, performed during the last 13 years. - In the chapter II is reported the use of ionic liquids to perform a multicomponent reaction leading to the first total synthesis of the 12-epiCarboprost. In the chapter III an intramolecular radical cyclisation is used for the preparation of Carboprost and several other prostaglandins. In Chapter IV we demonstrate how the use of a lipase in the [C8mim][PF6] ionic liquid offers a very efficient solution to the problem of the resolution for the key intermediate of all previous synthesis. In chapter V, we demonstrate how the ionic liquids are very attractive alternative solvents for the mono- and gem-difluorination reactions using DAST as the fluorinating agent
Moulard-Ravoisier, Thérèse. "Influence de médicaments à fort pouvoir électrodonneur sur les systèmes oxydasiques et peroxydasiques : conséquences sur l'hormonogénèse thyroi͏̈dienne et sur la synthèse des prostaglandines." Limoges, 1990. http://www.theses.fr/1990LIMO301B.
Full textGuy, Alexandre. "Synthèse biomimétique de la 15-F2t-IsoP. Synthèse de l'ent 5,6-dihydro-2,3-dinor-15-F2t-IsoP." Montpellier 2, 1998. http://www.theses.fr/1998MON20183.
Full textKuhn, Cyrille. "Nouvelles voies de synthèse énantiosélective de prostanoi͏̈des à activité antitumorale." Paris 5, 1996. http://www.theses.fr/1996PA05P622.
Full textRoulland, Emmanuel. "Application de la réaction de métathèse à la synthèse d'analogues de prostaglandines antitumorales." Paris 5, 2000. http://www.theses.fr/2000PA05P623.
Full textHenry, Olivier. "Synthèses totales de métabolites de la 15-F2t-Isoprostane." Montpellier 2, 2002. http://www.theses.fr/2002MON20009.
Full textRodriguez, Ana. "Synthèse totale des prostaglandines, leucotriènes, lipoxines, acides hydroxyeicosatétraènoïques et de leurs analogues deutérés." Paris 7, 1999. http://www.theses.fr/1999PA077220.
Full textPerrin, Véronique. "Synthèse et caractérisation pharmacologique de nouveaux antagonistes potentiels des récepteurs du thromboxane A2." Lyon 1, 1996. http://www.theses.fr/1996LYO10314.
Full textRondot, Benoît. "Synthèse biomimétique de précurseurs d'isoprostanes par carbocyclisation radicalaire." Montpellier 2, 1994. http://www.theses.fr/1994MON20243.
Full textAchard, fabienne. "Acides gras d'origine marine : métabolisme et effets sur la synthèse de prostacycline endothéliale." Lyon, INSA, 1995. http://www.theses.fr/1995ISAL0087.
Full textThe investigated the role and metabolism of n-3 fatty acids from marine oil (eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids) in bovine aortic endothelial cells. First, we studied the anti-aggregant potential of endothelial cells enriched with EPA or DHA, and their capacity to synthetize prostacyclin. We showed that n-3 fatty acids treated cells were less active than control cells in inhibiting platelet aggregation and in producing prostacyclin, and these phenanena have been positively correlated. In the second part, the metanolic fate of EPA and DHA was studied. He found that they were actively interconverted by endothelial cells, leading to DPA accumulation. In addition, enrichment with n-3 fatty acids modified the cellular concentration of other fatty acids, especially those of the n-6 series. Only EPA altered arachidonic acid concentration in phospholipids. Last, the inhibitory mechanisms displayed by n-3 fatty acids upon the prostacyclin Sjmthesis are analyzed. We observed that prostacyclin formation in n-3 fatty acids enriched cells was similarly inhibited whatever the source of arachidonic acid: endogenous or exogenous. These results suggest that the investigated fatty acids act rather on the enzymic conversion of arachidonic acid than on its avai1ability. We also found a decreased 1eve1 of PGHS-1 and of its transcript in enriched cells, suggesting some transcriptional effects
Belval, Florence. "Cyclisations radicalaires séquentielles d'éthers silylés allyliques Bêta-fonctionnalisés. Application à la synthèse régio- et stéréospécifique d'un précurseur d'isoprostanes." Montpellier 2, 1998. http://www.theses.fr/1998MON20135.
Full textTisserand, Steve. "Contribution à la chimie du chrome et synthèses totales de produits naturels et de composés d'intérêts thérapeutiques." Université Louis Pasteur (Strasbourg) (1971-2008), 2004. https://publication-theses.unistra.fr/public/theses_doctorat/2004/TISSERAND_Steve_2004.pdf.
Full textThe work realized during this PhD allowed the development and a better understanding of the chemistry based on chromium(III). It also permitted the total synthesis of molecules of biological interest as part of a collaboration with Pierre Fabre Laboratories. In the first part of this work based on organochromium species, the reproducibility of experiments and the development of methods to generate chromium chloride are exposed. This work also presents a new route to synthesize propargylic alcohols by using chromium(II) and triethylamine, starting from trichloroalkanes and aldehydes. The mechanism which involves the formation of an alkynyl-chromium has been studied. Furthermore the behaviours and the mechanisms of different substrates in presence of CrCl2, such as trichloroethanol and derivates, -unsatured secondary trichloroalkanes and carbon tetrachloride have been studied, as well as the influence of lithium iodide on some of these reactions. From these studies, new routes for the syntheses of E-,-insaturated aldehydes, Z-2-chloroethenol etheroxides, 1-chloroethenol esters, -homoallylic alcohols, and chalcone derivates have been derived. In the second part of this work, total syntheses of four compounds of biological interest have been studied : prostaglandins PGF2 and PGE2, Rhein (with two different ways), and Milnacipran
Gauvreau, Danny. "Expression différentielle des prostaglandines E synthétases dans l'oviducte bovin au cours du cycle œstral." Master's thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/20800.
Full textGong, Yanchun. "Synthesis of prostaglandins and novel N-oxyamide linked oligosaccharide and oligonucleotide mimetics." Thesis, Cachan, Ecole normale supérieure, 2012. http://www.theses.fr/2012DENS0040.
Full textProstaglandins (PGs) play key roles in the regulation of cell proliferation, differentiation, and regeneration in gastrointestinal and cardiovascular systems, and a fundamental role in inflammatory and immune responses. After half century of development, PGs have been demonstrated to have a wide range of potent pharmacological properties on inflammation, glaucoma, osteoporosis, cancer, type 2 diabetes and neurodegenerative disorders. The interesting and complex structures of PGs and their very limited availability in nature have sparked the organic chemists to create more elegant synthesis methods to meet the scientific research and pharmaceutical demands. In this thesis, we have realized the total synthesis of prostaglandin E2 (PGE2) in 24 steps with a total yield of 1.33%, with only 5 chromatographic purifications for the whole process. An efficient one-pot synthesis of Corey lactones have been realized from the chloro-ketoacid derivatives in the presence of Oxone. A practical method for the resolution of racemic 2-oxotricyclo[2.2.1.03,5]heptane-7-carboxylic acid with high e.e. value (> 99%) has also been developed. Nucleic acids and carbohydrates are existing in all the living systems and play very important biological roles as gene expression and intracellular recognition processes. Much recent efforts have been devoted to the development of oligosaccharide mimetics and synthetic oligonucleotides for various biological, therapeutic and diagnostic applications. In this thesis, we have described the synthesis of a new series of N-oxyamide linked oligosaccharide and oligonucleotide mimetics. From the readily available diacetone D-glucose, D-ribofuranoid glycoaminooxy acid derivatives have been successfully prepared as a novel family of sugar building blocks. Homo-oligomers (dimer to hexamer) have been generated as oligosaccharide mimetics. Nucleoside aminooxy acids have been synthesized for the first time by N-glycosylation of sugar aminooxy acids with five common nucleic bases. Coupling reaction of nucleoside aminooxy acid derivatives furnished the desired N-oxy amide-linked dinucleosides
Serre, Nathalie. "Contribution à l'étude de la chimie de trois iridoi͏̈des : l'aucuboside, le catalposide et le monomélittoside." Paris 5, 1999. http://www.theses.fr/1999PA05P124.
Full textTraversa, Christel. "Synthèse et étude de nouveaux antagonistes potentiels du thromboxane A2 à partir d'aza-7-norbornadiènes." Lyon 1, 1994. http://www.theses.fr/1994LYO10305.
Full textLaurent, Stéphane. "Alkylation des 4-alkylidènecyclopenténones issues de la réaction de Pauson-Khand alcyne/allène/CO : application à la synthèse de l'ester méhtylique de la (±)-[delta]12-PGA2." Lyon 1, 2005. http://www.theses.fr/2005LYO10018.
Full textAsselin, Éric. "Régulation de la synthèse des prostaglandines au moment reproduisant la lutéolyse et la reconnaissance de la gestation dans les cellules endométriales bovines." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ36229.pdf.
Full textMary, Didier. "Mise en évidence de la kinase dépendant de l'AMP cyclique dans l'inhibition de la sécrétion d'interleukine 2 par la prostaglandine E2 : implication de la synthèse de prostaglandine B2 dans le mode d'action de l'interleukine 1 dans le lymphocyte T." Nice, 1989. http://www.theses.fr/1989NICE4326.
Full textRiveron, Véronique. "Synthèse et étude de nouveaux antagonistes potentiels du thromboxane A2 et de la prostaglandine H2 faisant intervenir un squelette 2-azanorbornane." Lyon 1, 1993. http://www.theses.fr/1993LYO10293.
Full textRoland, Arlène. "Synthèses totales d'isoprostanes et étude du stéréocontrôle de l'étape de cyclisation radicalaire." Montpellier 2, 1997. http://www.theses.fr/1997MON20216.
Full textZarrouki, Bader. "Tissu adipeux et inflammation : effet du stress oxydant sur le métabolisme des prostaglandines dans les adipocytes 3T3-L1." Lyon, INSA, 2007. http://theses.insa-lyon.fr/publication/2007ISAL0088/these.pdf.
Full textOxidative stress and low grade chronic inflammation are increased in accumulating fat. Recent studies suggest that inflammation links obesity to type 2 diabetes and insulin resistance. The inflammatory response is mediated by various signaling molecules and enzymatic pathways, among which cyclooxygenase (COX) is one of the most predominant. COX catalyzes the formation of prostaglandins from phospholipase A2-released arachidonic acid. Our objective was to test the effect of oxidative stress produced by the glucose oxidase/glucose system, on COX expression and prostaglandins metabolism in 3T3-L1 adipocytes. Under theses conditions, we observed a significant increase in 4-hydroxynonenal (4-HNE), a very reactive aldehyde and one of the major products of lipid peroxidation, associated with an increase of COX-2, the inducible form of COX. 4-HNE increased COX-2 mRNA and protein expression, through p38 MAPK activation. The COX-2 up-regulation led to a significant production of prostaglandin D2 and F2α. In a previous study we have shown that oxidative stress decreased adiponectin production in 3T3-L1 adipocytes, but the mechanism of this regulation remained unclear. The effects of prostaglandin D2 (PGD2) and its derivatives (PGJ2, ∆12 J2, 15 deoxy∆12,14J2) on the adiponectin production were tested in 3T3-L1 adipocytes. The 15 deoxy∆12,14J2 (15dPGJ2), issued from the non enzymatic conversion of PGD2, has a powerful suppressive effect on adiponectin production. This prostaglandin is described as an endogenous PPARγ ligand. In this study, we show that the effect of 15dPGJ2 on adiponectin production is independent of PPARγ, the MAPK family and NF-κB. Thus, 15dPGJ2, may be the mediator of the effect of oxidative stress on adiponectin production in 3T3-L1 adipocytes
Ollivier, Jean. "Les cyclopropanols précurseurs de composés cyclopentaniques : application à la synthèse totale de produits naturels." Paris 11, 1986. http://www.theses.fr/1986PA112003.
Full textThe aim of this thesis is the synthetic applications of two peculiar cyclopropanols : l) The l-ethoxycyclopropanol, is converted into propargylic cyclopropanols upon treatment with acetylenic magnesium bromide or lithium. Hydride reduction and O-silylation lead to l-siloxy l-vinylcyclopropanes which undergo thermal C3 ---> C5 ring enlargement into l-siloxycyclopentenes ; then , these enol ethers are regiospecifically alkylated into 2, 3-disubstituted cyclopentanones. This scheme is illustrated by the total synthesis of ± ll-deoxyprostaglandin E₂ methyl ester. 2) The l-hydroxycyclopropanecarboxaldehyde tetrahydropyranyl and silylated ethers provide l-siloxy-l-vinylcyclopropanes which, after thermal rearrangement lead directly to 2,3-disubstituted cyclopentanones and cyclopentenones upon hydrolysis or dehydrosilylation, so avoiding the quite delicate enol ether alkylation. Dicranenones, new fatty acids structurally similar to prostanoids and jasmanoids, having antimicrobial activity, are prepared from this new synthon
Rahbar, Farinaz. "Rôle de la prostaglandine et de la prostaglandine H synthase dans le système reproductif humain." Lyon 1, 2004. http://www.theses.fr/2004LYO10096.
Full textColombe, Laurent. "Prostglandines et cheveu." Paris 7, 2007. http://www.theses.fr/2007PA077134.
Full textFor a long time, research on androgenetic alopecia has focused on the impact of androgens. However it is becoming increasingly clear that the regulation of hair growth is not solely due to these factors. We, now, have to consider the impact of vitamins (A, D), thyroid hormones, PPAR ligands, hedgehog family agonists and recently prostanoïds. The latter was discovered as a side effect during clinical studies on hypertension ocular pressure using FP receptor agonists (receptor linking prostaglandin PGF2a). Eye lotion treatments showed that lashes had grown longer, thicker and more pigmented compared to non treated eyes. Moreover, ancillary hairs around eyelids appeared. In the literature, studies have also shown that in the présence of the same agonists on macaque heads as well as on the backs of mice the same re-growth effects were observed. Inhibition of the prostaglandin synthesis either pharmacologically or biologically (mouse Knockout) confirms that this pathway is important for hair growth control. Over-expression of some of these enzymes usually induces impaired growth. All these results suggest that a more exhaustive study should be carried out on the actors of prostaglandins metabolism (synthesis enzymes) and prostanoïd receptors in the hair follicle. These studies were established in conjunction with a strategy to find active re-growth agents (or against hair loss). A study to fmd inhibitors of the catabolic enzyme 15- PGDH type 1 was also developed
Öhlinger, Stefan. "Synthese von 12[alpha]-iso-Carbacyclinen [12-alpha-iso-Carbacyclinen] neue Bausteine zur Synthese isomerer Prostaglandine und Carbacycline /." [S.l. : s.n.], 1999. http://www.diss.fu-berlin.de/2000/8/index.html.
Full textStiemke, Frank Mario. "Neue Wege zu Prostaglandinen und verwandten Wirkstoffen /." Clausthal-Zellerfeld : Papierflieger, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=018722967&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textBouret, Bénédicte Grimaud Nicole. "Les inhibiteurs spécifiques de la cyclooxygénase 2 utilisations cliniques et perspectives thérapeutiques /." [S.l.] : [s.n.], 2003. http://theses.univ-nantes.fr/thesemed/PHbouret.pdf.
Full textPlant, Matthew Hilton. "Characterization of a novel prostaglandin endoperoxide H synthase-1 transcript and examination of prostaglandin endoperoxide H synthase-1 expression." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0004/MQ46601.pdf.
Full textGyomorey, Sandor. "Temporal expression of prostaglandin endoperoxide H synthase type 2 and prostaglandin receptors at birth." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0023/MQ40864.pdf.
Full textKoeberle, Andreas. "Identification and characterization of microsomal prostaglandin E₂ synthase-1 inhibitors = Identifizierung und Charakterisierung von Hemmstoffen der mikrosomalen Prostaglandin E₂ Synthase-1 /." Tübingen, 2009. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000278394.
Full textMion, François. "Role des eicosanoides dans la physiopathologie digestive et hepatique : etude experimentale ; synthese hepatocytaire de prostaglandines." Lyon 1, 1991. http://www.theses.fr/1991LYO1M055.
Full textSchaefer, Michel. "Réactions énamines-cétones conjuguées : annélation de Stork-Robinson en série benzo (b) hétérocyclique synthèse d'intermédiaires d'azaprostaglandines /." Metz : Université Metz, 2008. ftp://ftp.scd.univ-metz.fr/pub/Theses/1978/Schaeffer.Michel.SMZ7803.pdf.
Full textThorén, Staffan. "Characterization of human glutathione-dependent microsomal prostaglandin E synthase-1 /." Stockholm, 2003. http://diss.kib.ki.se/2003/91-7349-637-5/.
Full textTesse, Angela. "Effets des microparticules issues des lymphocytes T humains sur les fonctions endothéliale et musculaire lisse dans divers types d'artères." Université Louis Pasteur (Strasbourg) (1971-2008), 2003. http://www.theses.fr/2003STR13044.
Full textMicroparticles (MPs) are membrane vesicles with procoagulant and proinflammatory properties released during cell activation. The present study was designed in dissecting the effects evoked by human T lymphocytes-derived MPs on vascular reactivity. MPs treatment, at concentrations that can be reached in circulating blood (i. E. 30 nmol/L phosphatidylserine), affects endothelial-dependent relaxation in response to both chemical stimuli (acetylcholine) in aorta and physical stimuli (shear stress) in small mesenteric arteries of the mice. MPs treatment reduces nitric oxide (NO)- and prostacyclin- but not endothelium derived hyperpolarizing factor (EDHF)-mediated dilatation. The effect of MPs results in a decrease in expression of endothelial NO synthase and in an overexpression of endothelial caveolin-1. Reduced expression of cyclo-oxygenase 1 does not account for the impairment of prostacyclin component of endothelial response. Moreover MPs induce vascular hyporeactivity in response to serotonin, phenylephrine and phorbol 12, 13-dibutyrate in mice aortas with or without functional endothelium. Exposure either to the NO-synthase inhibitor, the non specific or specific cyclooxygenase-2 (COX-2) inhibitor or their combination significantly reversed vascular hyporeactivity produced by MPs exposure towards contraction obtained in non-treated arteries. The effects of MPs were associated with an increased aortic production of NO and by an increased release of prostacyclin. Furthermore, MPs induced an upregulation of pro-inflammatory protein expressions, inducible NO synthase (iNOS) and COX-2, in the medial layer of vessels treated with MPs compared to controls. The increases in iNOS and COX-2 expressions were associated with an increased aortic staining of p65/RelA subunit of NF-kB upon MPs treatment. These results contribute to a better comprehension of the deleterious effects of enhanced circulating MPs observed in cardiovascular diseases
Guyot, Thierry. "Stereoselective syntheses of allenes and prostaglandin derivatives." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367140.
Full textMrad, May. "Mécanismes de régulation de la hème-oxygénase-1 et de la cyclooxygénase-2 par les statines dans les macrophages et les fibroblastes." Thesis, Paris Est, 2013. http://www.theses.fr/2013PEST0115.
Full textStatins are selective competitive inhibitors of the 3-hydroxy-3-methylglutaryl coenzyme A reductase administered for the treatment of hypercholesterolemia. These molecules have multiple pleiotropic effects in addition to lowering cholesterol such as anti-inflammatory and anti-oxidant properties. Heme-oxygenase-1 is responsible for the catabolism of heme and has important anti-oxidant and anti-inflammatory effects. Cylooxygenase-2, along with microsomal prostaglandin E synthase-1, metabolizes arachidonic acid into prostaglandin E2, a biological mediator with important effects on vascular tone, cell growth, inflammation and pain. Because cyclooxygenase-2 and heme-oxygenase-1 are targets for statins and play a key role in inflammation and fibrosis, we aimed to investigate the molecular mechanisms underlying the regulation of these enzymes by statins in macrophages and fibroblasts.In fibroblasts, simvastatin and fluvastatin induced HO-1 expression in a mevalonate and geranylgeranylated-dependent manner. We further demonstrated a role of the transcription factors CCAAT/enhancer-binding protein beta and gamma and upstream stimulatory factor 1 or 2 in statin-dependent induction of heme-oxygenase-1 using small interfering RNA and dominant-negative constructs.In macrophages, we showed that statins i- increase the level of expression of heme-oxygenase-1 and ii- nitric oxide can play a role in statin-dependent induction of heme-oxygenase-1 , iii- RhoA/C is one of the target of statins, iv- the transcription factor CCAAT/enhancer-binding protein beta is involved in the regulation of heme-oxygenase-1 by statins.Finally, since cyclooxygenase-2 and heme-oxygenase-1 play a role in fibrosis and inflammation, we analyzed the effect of statins in human hepatic myofibroblasts, the fibrogenic cells of the liver. Statins significantly upregulated cyclooxygenase-2 and microsomal prostaglandin E synthase-1 and inhibited cell proliferation in a PGE2-dependent manner via inhibition of RhoA/C activity. Further analysis of the transcription factors involved showed a role for nuclear factor kappa B and cAMP response element/Ebox regions of cyclooxygenase-2 promoter and GATA and GC rich box regions for microsomal prostaglandin E synthase-1.Overall, our thesis results highlight the molecular mechanisms of statin-dependent regulation of two important enzymes in inflammation and fibrosis, in macrophages and fibroblasts. They confirm that some of the protective effects of statins go through the upregulation of heme-oxygenase-1, cyclooxygenase-2 and microsomal prostaglandin E synthase-1
Del, Bufalo Aurelia. "Effets des sensibilisants sur la synthèse de la prostaglandine E2 : Mécanismes et intérêt dans la prédiction de l’allergie de contact." Thesis, Paris, AgroParisTech, 2012. http://www.theses.fr/2012AGPT0003/document.
Full textContact sensitizers are defined as reactive molecules (electrophilic) which have the ability to modify skin proteins to form an antigen (hapten). In addition to the haptenation mechanism, danger signals, leading to the activation of dendritic cells, are described to be crucial for the effective induction of an hapten-specific T cell immune response. In the context of the 7th amendment to the Cosmetic Directive, the cosmetic industry is concerned by the challenge of finding non-animal approaches to assess the sensitizing potential of chemicals. While danger signals induced by sensitizers in steady-state conditions have already been analyzed, we chose to investigate the impact of sensitizers on the course of an inflammatory response. For this purpose we used the U937 cell line differentiated with PMA and activated with LPS. In these conditions, cells produce a large amount of inflammatory mediators (IL-β, TNF-α, IL-6, IL-10, IL-8, PGE2, PGD2, TxB2) through the activation of pathways leading to the activation of the transcription factors NF-κB and Nrf2 and through AA metabolism by the cPLA2/COX-2 cascade. Interestingly, we showed that 6 contact sensitizers with various potential (DNCB, PPD, HQ, PG, CIN, EUG) significally and specifically decrease the production of prostanoïds and in particular of PGE2 induced by PMA/LPS. We further demonstrated that there is no unique inhibition profile of the sensitizers even if the majority (except for DNCB) of the effects applies on COX-2 (i.e. inhibition of the expression and/or activity). For DNCB, inhibition mechanism appears to be dependant of its capacity to react with thiols residues and in particular to deplete intracellular glutathione possibly leading to the inactivation of the PG-synthases. In parallel, we assess a statistical analysis on 160 molecules that allow us to define the test parameters (a molecule is a sensitizer if the PGE2 inhibition at 24h is more than 60%) and to calculate the test performance toward LLNA (78%). Moreover we demonstrated that the PGE2 test could be complementary to other already existing in vitro tests like MUSST or Nrf2-HTS. In summary, we add here a new insight into the multiple biochemical effects described so far for sensitizers. Even if the underlying biological relevance remains unclear, the parameter “PGE2 inhibition” is good test for skin sensitization evaluation. Further studies will precise how this parameter could be implemented into an alternative testing strategy for the evaluation of skin sensitization
Aitken, Susan-Marie. "Inhibition and inactivation of prostaglandin synthase-2 and horseradish peroxidase." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0015/NQ54372.pdf.
Full textKowalewski, Mariusz Paweł. "Untersuchungen zur Rolle des Prostaglandin Systems in der Regulation der Corpus Luteum Funktion der Hündin durch Erfassung der Expression von Cyclooxygenase 1 und -2 (Cox1,-2), Prostaglandin F2alpha Synthase (PGFS), Prostaglandin E2 Synthase (PGES) und Prostaglandin F2alpha Rezeptor (PGFR)." Lollar : Rosenbaum, 2007. http://geb.uni-giessen.de/geb/volltexte/2007/4476/index.html.
Full textStewart, Ken Gerald. "The effects of estrogen and aging on vascular prostaglandin-endoperoxide synthase and nitric oxide synthase." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0009/MQ60181.pdf.
Full textHanke, Thomas [Verfasser], Manfred [Akademischer Betreuer] Schubert-Zsilavecz, and Oliver [Akademischer Betreuer] Werz. "Synthese und Charakterisierung von Inhibitoren der mikrosomalen Prostaglandin E2 Synthase-1 und der 5-Lipoxygenase / Thomas Hanke. Gutachter: Manfred Schubert-Zsilavecz ; Oliver Werz." Frankfurt am Main : Univ.-Bibliothek Frankfurt am Main, 2014. http://d-nb.info/1063596785/34.
Full textCheung, Sun-Yee [Verfasser], Manfred [Gutachter] Schubert-Zsilavecz, and Dieter [Gutachter] Steinhilber. "Synthese und Charakterisierung von dualen 5-Lipoxygenase und mikrosomalen Prostaglandin E2 Synthase-1 Inhibitoren / Sun-Yee Cheung ; Gutachter: Manfred Schubert-Zsilavecz, Dieter Steinhilber." Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2019. http://d-nb.info/1188314955/34.
Full textTang, Hui-yuan. "Role of C-terminal 18 amino acids for the biological activity of prostaglandin endoperoxide H synthase-2." Diss., Connect to online resource - MSU authorized users, 2007.
Find full textTitle from PDF t.p. (viewed Aug. 17, 2009). Includes bibliographical references (p. 114-125). Also issued in print.
Jaisser, Frédéric. "Etude experimentale de l'effet de l'hormone antidiuretique sur la synthese de pge2 dans le canal collecteur cortical." Reims, 1989. http://www.theses.fr/1989REIMM041.
Full textWangpradit, Orarat. "Prostaglandin H synthase catalyzes the oxidation of 4-chlorobiphenyl metabolites, and the in vivo effects on prostaglandin production." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/1101.
Full textPecchi, Emilie. "Mécanismes moléculaires de l’anorexie inflammatoire : rôle de la microsomal Prostaglandin E Synthase (mPGES)-1." Aix-Marseille 3, 2008. http://www.theses.fr/2008AIX30018.
Full textInfection or inflammation trigger a set of physiological changes (anorexia, fever,. . . ) known as the acute phase reaction. During this work, we analyzed the possible involvement of a terminal prostaglandin E2 synthase, the mPGES-1, in this pathological state. We show that this enzyme, inducible in inflammatory conditions, is required for central nervous system activation and for anorexia during acute inflammation. Moreover its invalidation abolished the symptoms of the anorexia-cachexia syndrome (chronic anorexia and dramatic weight loss) induced by subcutaneous tumour growth. Altogether, our results indicate that mPGES-1 inhibition could represent a therapeutic strategy to treat acute phase reaction symptoms and anorexia-cachexia syndrome observed in numerous chronic diseases with inflammatory component
Coulthard, Graeme. "Concise, asymmetric syntheses of prostaglandin PGF 2α and latanoprost." Thesis, University of Bristol, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627981.
Full text