Dissertations / Theses on the topic 'Plaquettes, troubles des'
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Gronier, Benjamin. "Indices sérotoninergiques plaquettaires dans les troubles dépressifs." Aix-Marseille 2, 1991. http://www.theses.fr/1991AIX22054.
Full textMcGregor, John. "Étude structurale et fonctionnelle des glycoprotéines membranaires plaquettaires humaines : applications en pathologie." Lyon 1, 1987. http://www.theses.fr/1987LYO1T066.
Full textForestier, François. "Plaquette et CEC. : Atteinte plaquettaire en chirurgie cardiaque avec CEC : aspects physiopathologiques, prévention, détection et traitement." Bordeaux 2, 1998. http://www.theses.fr/1998BOR23017.
Full textSerres, Florence. "Etude du transport membranaire érythrocytaire du tryptophane dans les troubles dépressifs et schizophréniques, et des récepteurs 5HT2 plaquettaires dans les troubles dépressifs." Aix-Marseille 3, 1996. http://www.theses.fr/1996AIX30019.
Full textMiolo, Nicole Balta. "Thrombocytopénie et infection à V. I. H : à propos d'une observation." Montpellier 1, 1988. http://www.theses.fr/1988MON11219.
Full textMartinez, Jézabel. "Thrombocythémie et thrombose intracardiaque sans cardiopathie sous-jacente : à propos de 2 cas." Bordeaux 2, 1989. http://www.theses.fr/1989BOR25030.
Full textDrouin, Jeanne. "La maladie de Bernard-Soulier de la clinique à la biologie moléculaire : étude de cette thrombopathie dans 3 familles canadiennes françaises." Lyon 1, 1993. http://www.theses.fr/1993LYO1T205.
Full textLomero, David. "La dystrophie thrombocytaire hémorragipare de Jean Bernard et Soulier : à propos de trois cas dans deux familles, observés à l'Ile de la Réunion." Montpellier 1, 1992. http://www.theses.fr/1992MON11209.
Full textNégrier, Claude. "L'apport de la biologie moléculaire à l'étude des thrombocytopathies." Lyon 1, 1998. http://www.theses.fr/1998LYO1T047.
Full textCadroy, Yves. "Mécanismes de la formation du thrombus in vivo : expérimentations chez le primate : [thèse en partie soutenue sur un ensemble de travaux]." Toulouse 3, 1989. http://www.theses.fr/1989TOU30182.
Full textRuf, Jean-Claude. "Influence du régime et des antioxydants (vitamine E, D myo-inositol 1,2,6-triphosphate) sur les altérations lipidiques et la fonction plaquettaire chez le rat diabétique de type I." Lyon 1, 1991. http://www.theses.fr/1991LYO1T181.
Full textRoussillon, Emmanuel. "Importance de la thrombopénie dans la prise en charge du Hellp syndrome : à propos de 62 cas." Bordeaux 2, 1999. http://www.theses.fr/1999BOR23104.
Full textPons, Laurent. "Troubles moteurs digestifs associés à une inflammation expérimentale du tractus digestif chez le rat. Rôle du PAF, des radicaux libres et des prostanoi͏̈des." Toulouse 3, 1993. http://www.theses.fr/1993TOU30146.
Full textNaouri, Michèle. "Intérêt de l'aspirine dans la prévention des accidents vasculaires cérébraux d'origine ischémique." Paris 5, 1992. http://www.theses.fr/1992PA05P076.
Full textGhalloussi, Dorsaf. "Apport de pathologies plaquettaires rares à la compréhension des rôles de CalDAG-GEFI et des kindlines dans l'activation de l'intégrine αIIbß3." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM5008.
Full textInherited platelet disorders are rare diseases that give rise to severe bleeding when platelets fail to fulfill their hemostatic function upon vessel injury. Identifying the molecular mechanisms involved brings important insight into platelet pathophysiology. During my PhD, I studied platelets isolated from members of two families suffering severe bleedings among those one had no established diagnosis. In the first family, using whole exome sequencing, we identified a RASGRP2 mutation causing a G248W substitution leaving CalDAG-GEFI inactive. Platelets from individualscarrying the mutation exhibit a reduced ability to activate Rap1 and to perform proper Inherited platelet disorders are rare diseases that give rise to severe bleeding when platelets fail to fulfill their hemostatic function upon vessel injury. Identifying the molecular mechanisms involved brings important insight into platelet pathophysiology. During my PhD, I studied platelets isolated from members of two families suffering severe bleedings among those one had no established diagnosis. In the first family, using whole exome sequencing, we identified a RASGRP2 mutation causing a G248W substitution leaving CalDAG-GEFI inactive. Platelets from individuals carrying the mutation exhibit a reduced ability to activate Rap1 and to perform proper αIIbß3 integrin inside-out signaling in response to low doses agonists. The presence of a single normal allele is sufficient to prevent bleeding but does not allow normal platelet function. integrin inside-out signaling in response to low doses agonists. The presence of a single normal allele is sufficient to prevent bleeding but does not allow normal platelet function. Members of the second family carry a FERMT3 mutation leading to a completekindlin-3 deficiency (pN54RfsX142). Platelets from the homozygous patient are unable to perform proper integrin αIIbß3 activation. We now observe that kindlin-3 deficient platelets form filipodia and actin nodules but are unable to extend lamellipodia even in presence of Mn2+. We demonstrate that kindlin-3 is essential for Cdc42 activity regulation and actincytoskeleton remodeling during αIIbß3 integrin outside-in signaling To date, only the kindlin-3 has been involved in integrin activation. We show that kindlin-2 is present in human platelets and megakaryocytes. Both kindlins exhibit distinctlocalizations. In megakaryocytes, kindlin-2 specifically localizes within focal adhesion and associates preferentially with ß3 integrins. In platelets, unlike kindline-2, kindline-3 is located in actin nodule. All together these data argue in favor of specific roles played by each kindlins and a possible implication of kindlin-2 in megakaryocytopoiesis
Rivière, Étienne. "Implication de la protéine Bcl-xL dans la mégacaryopoïèse humaine normale et dans le purpura thrombopénique immunologique chronique." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0148/document.
Full textThe Bcl-xL protein is a member of Bcl-2 anti-apoptotic proteins. It has been shown in mouse that this protein had a major role in platelet production (megakaryopoiesis). Bcl-xL deregulation could lead to megakaryopoiesis impairement and explain some human diseases such as chronic thrombocytopenias. One cause of chronic thrombocytopenia is immune thrombocytopenia (ITP) that associates 2 pathophysiological mechanisms: an immune-mediated platelet destruction and an insufficient production from the bone marrow cells. ITP is a diagnosis of exclusion when all known causes of thrombocytopenia have been ruled out by diagnosis work-up. In ITP cohort of patients followed in our internal medicine department, we have identified some patients with a haematological profile of their disease, ie absence of overt features of auto-immunity, and absence of response to immunomudulatory treatments, or no indication to such treatment because of sufficient platelet count. We demonstrate in this study that Bcl-xL is necessary for megakaryocyte survival during all megakaryopoiesis, contrary to what was found in mouse. Moreover, some patients have an intrinsically impaired proplatelet formation, and some of them also have a decrease of Bcl-xL mRNA and protein in their platelets. These novel observations suggest that a deregulation of Bcl-xL is a possible cause of their disease and lead the way to the identification of a potentially new cause of chronic thrombocytopenia in human
Cai, Huili. "Diagnostic des pathologies plaquettaires : optimisation de l'exploration des granules denses plaquettaires." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0067/document.
Full textPlatelets play an essential role in the hemostasis. Abnormalities in platelet number or platelet function may result in excessive bleeding. Diagnosis of platelet disorders requires platelet count and platelet function testing. Our work is aimed to improve the diagnosis of platelet disorders, especially to develop new approaches for testing the function of platelet dense granules. Inherited platelet disorders are hardly recognized in China. Therefore we published an article in Chinese on the topic of hereditary thrombocytopenia in a Chinese clinical journal, within the framework of collaboration between Nancy and Wuhan. In addition, we evaluated the usefulness of flow cytometric mepacrine assay combined with CD63 expression in the diagnosis of dense granule disorder. Moreover, our work demonstrates that vitamin C deficiency might be associated with platelet dense granule disorder. Finally, we developed a method by flow cytometry and then by HPLC for detection of platelet serotonin
Dupuis, Arnaud. "Diagnostic biologique, caractérisation moléculaire et identification de nouveaux gènes impliqués dans des thrombopathies congénitales non étiquetées." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAJ078/document.
Full textInherited platelets disorders (IPD) are pathologies associated with heterogeneous bleedingphenotypes. They are due to functional platelets deficiency that may come with morphological abnormalities and/or thrombocytopenia. Available diagnosis tools are used to link a functional deficiency to a protein defect and in some instances to a specific genetic mutation. However, in 2015 at least 50% of IPD are still not identified. In this context, the haemostasis laboratory of the EFS Alsace together with INSERM UMR S949 team are working to diagnose and characterize these pathologies. Thus, we found three new P2Y12 receptor variants in three different families. The mutation p.His187Gln has been fully characterized on blood fresh platelets coming from one patient and in an appropriate cellular model. The reproduction of the two other mutations (p.Tyr259Cys and p.Phe95Ser) is currently ongoing. We also studied a family in which three members are carrying a delta storage pool disease. The full exome sequencing analysis leads us to suspect the involvement of the nucleotides transporter VNUT in this pathology
Audia, Sylvain. "Etude physiopathologique de la réponse immunitaire au cours de la thrombopénie immunologique (purpura thrombopénique immunologique)." Phd thesis, Université de Bourgogne, 2010. http://tel.archives-ouvertes.fr/tel-00687984.
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