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Academic literature on the topic 'Acide eicosanoique'
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Dissertations / Theses on the topic "Acide eicosanoique"
Wiegart, Lutz. "Autoassemblage de monocouches organiques à faible température." Phd thesis, Université Joseph Fourier (Grenoble), 2007. http://tel.archives-ouvertes.fr/tel-00164719.
Full textWiegart, Lutz. "Autoassemblage de monocouches organiques à faible température." Phd thesis, Grenoble 1, 2007. http://www.theses.fr/2007GRE10111.
Full textAt ambient temperature monolayer phases of most alkane chain molecules exhibit phases, characterised by the rotation of the chain around the molecular axis. Consequently, these phases are only weakly ordered rather than crystalline. In order to achieve crystalline ordering, the energy of the system needs to be reduced. New cryo-protective liquid subphases extend the accessible range to much lower temperatures than the freezing threshold of water. Monolayers of common surfactants like fatty acids and phospholipids were prepared under constant volume/constant surface pressure conditions and their phase behaviour was studied upon cooling. First insights into film stability and evolution upon cooling were achieved by Langmuir isotherms and GIXOS, while the in-plane ordering was investigated by GIXD. The molecules were found to adapt crystalline phases by a purely entropy driven self-assembly process, reaching packing densities similar to three dimensional single crystals. The evolution of the structure parameters compare to those of bulk alkanes undergoing the rotator-crystalline phase transition. XPCS was employed to relate the surface dynamics of the system to the appearance of crystalline phases. The phase transition was found to be accompanied by a change of the dynamics from propagating to overdamped capillary waves
Mayoungou-Vembet, Pierre. "Dynamique et processus d'évolution d'un hydrocarbure (eicosane) dans le sol." Poitiers, 1989. http://www.theses.fr/1989POIT2277.
Full textGoy, Agnès. "Metabolisme de l'acide arachidonique dans le tractus digestif de cobaye." Besançon, 1992. http://www.theses.fr/1992BESA3723.
Full textLiagre, Bertrand. "Expression et activite de 12-lipoxygenase de type plaquettaire et de 15-lipoxygenase de type reticulocytaire dans des synoviocytes humains de type b : modulation de la production de cytokines pro-inflammatoires et d'eicosanoides par interactions in vitro de synoviocytes avec des biomateriaux a usage orthopedique." Limoges, 1998. http://www.theses.fr/1998LIMO101A.
Full textKonkel, Anne. "Einfluss von Omega-3 Fettsäuren auf die Bildung physiologisch aktiver CYP-Eicosanoide." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2016. http://dx.doi.org/10.18452/17520.
Full textThe n-3 polyunsaturated fatty acids (n-3 PUFAs) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), protect from cardiovascular disease, especially from fetal arrhythmia. Moreover, in vitro studies proved that recombinant cytochrome P450 (CYP) enzymes not only accept the physiologically most important n-6 PUFA arachidonic acid (AA), but also EPA and DHA as alternative substrates, thereby generating regio- and stereospecific biologically active epoxy- and hydroxymetabolites, CYP-eicosanoids. These metabolites serve as second messengers regulating vascular, renal and cardiac function. The precise underlying molecular mechanisms are only partially understood and need further investigation. The first aim of the thesis was to show that the endogenous CYP-eicosanoid profile depends on the availability of the precursor fatty acids. The results of a clinical trial with 20 volunteers, show that n-3 PUFAs serve also in vivo as alternative CYP-dependent substrates and are even preferentially metabolized compared to AA. After EPA/DHA-supplementation 17,18 EEQ was generated as a major metabolite, potentially an important mediator of cardiovascular effects originally attributed to n-3 PUFAs. To test the anti-arrhythmic effect of EPA and 17,18-EEQ, an established cell model with neonatal rat cardiomyocytes (NRKMs) was used. The negative chronotropic effect of EPA was mimicked by 17,18-EEQ, attributed only to the R,S-enantiomer. A structure activity relationship study revealed synthetic analogs, exerting the same biological effect as 17,18-EEQ. Strict structural requirements were found for agonistic function, hinting at a specific interaction with cellular targets, like GPCRs. The search of a molecular target of CYP-eicosanoids led to a putative receptor, which was tested for ligand binding specificity. If the preliminary results on the ligand binding are confirmed in future experiments this receptor might be a novel target for the treatment of cardiac arrhythmia.
Mohammadpour, Roudbaraki Morad. "Rôle de l'acide arachidonique et de ses métabolites dans la régulation de la sécrétion de la prolactine (PRL) et de l'hormone de croissance (GH)." Bordeaux 2, 1996. http://www.theses.fr/1996BOR28405.
Full textLacape, Geneviève. "Contribution à l'étude d'un mécanisme d'information transcellulaire : le métabolisme d'acides gras hydroxyles par les cellules musculaires lisses vasculaires." Bordeaux 2, 1992. http://www.theses.fr/1992BOR2B001.
Full textGuérin, Christophe. "Eicosanoi͏̈des et débit sanguin cérébral." Paris 5, 1991. http://www.theses.fr/1991PA05P161.
Full textBooks on the topic "Acide eicosanoique"
1938-, Polgar Peter, ed. Eicosanoids and radiation. Boston: Kluwer Academic Publishers, 1988.
Find full textEicosanoids in invertebrate signal transduction systems. Princeton, N.J: Princeton University Press, 2000.
Find full textTaipei Conference on Prostaglandin and Leukotriene Research (1988). Taipei Conference on Prostaglandin and Leukotriene Research. Edited by Samuelsson Bengt, Wong Patrick Y. -K, and Sun Frank F. New York: Raven, 1988.
Find full textTrends in Eicosanoid Biology (Advances in Prostaglandin, Thromboxane, and Leukotriene Research). Lippincott Williams & Wilkins, 1990.
Find full textProstaglandins and Other Eicosanoids in the Cardiovascular System: Experimental Data-Clinical Experience. S. Karger AG (Switzerland), 1985.
Find full text(Editor), Frank F. Sun, ed. Taipei Conference on Prostaglandin and Leukotriene Research (Advances in Prostaglandin, Thromboxane, and Leukotriene Research). Lippincott Williams & Wilkins, 1989.
Find full text(Editor), Edward J. Goetzl, and Kevin R. Lynch (Editor), eds. Lysophospholipids and Eicosanoids in Biology and Pathophysiology (Annals of the New York Academy of Sciences). New York Academy of Sciences, 2000.
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