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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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The role of the Eph family in somitogenesis in the zebrafishDurbin, Lindsey Kate January 1999 (has links)
No description available.
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Regulation of somite myogenesis by cytokines occurs in specific somite regions and during distinct temporal periods /Baranski, Alicia Michelle. January 2007 (has links)
Thesis (Ph. D.)--University of Washington, 2007. / Vita. Includes bibliographical references (leaves 188-204).
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Étude des mécanismes par lesquels l'acide rétinoïque contrôle l'identité des segments le long de l'axe antéropostérieurHoule, Martin January 2003 (has links)
Thèse numérisée par la Direction des bibliothèques de l'Université de Montréal.
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Etude de la somitogenèse chez le serpent des blésGomez, Céline 19 December 2007 (has links) (PDF)
Le plan d'organisation des vertébrés est caractérisé par la répétition de segments tels que les vertèbres. Les premiers signes de segmentation sont observés pendant l'embryogenèse précoce, lorsque les précurseurs des vertèbres, appelés " somites ", se forment de manière périodique à partir du mésoderme paraxial présomitique (PSM). Il a été proposé qu'une "horloge de segmentation" contrôlerait la périodicité de formation des somites en interagissant avec un "front de détermination" reculant caudalement dans le PSM. Afin de comprendre les mécanismes établissant le nombre total de somites chez les vertébrés, j'ai comparé la régulation de la somitogenèse dans une espèce en formant un grand nombre-le serpent des blés- avec la souris, le poulet et le poisson zèbre. J'ai premièrement cloné et analysé par hybridation in situ l'expression des gènes impliqués dans la formation de front de détermination et de l'horloge de segmentation. Le patron d'expression des gènes associés au front s'est révélé conservé, alors que celui de lunatic fringe, un gène associé à l'horloge, s'est révélé particulièrement atypique. Une étude comparative basée sur un modèle mathématique nous a conduit à l'hypothèse que ce patron d'expression traduisait un rythme accéléré de l'horloge par rapport à la vitesse d'élongation de l'axe chez le serpent, expliquant ainsi sa production accrue de somites. En conclusion, notre étude, conduite sur un modèle original, suggère que la relation entre horloge et croissance de l'axe est un facteur important pour expliquer la différence du nombre de somites entre vertébrés.
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Analysis of myogenic regulatory factors and insulin-like growth factors in early somite myogenesis /Kiefer, Julie Christine. January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (leaves 96-116).
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Identification and Expression Analysis of Zebrafish Glypicans during Embryonic DevelopmentBrand, Michael, Gupta, Mansi 02 December 2015 (has links) (PDF)
Heparan sulfate Proteoglycans (HSPG) are ubiquitous molecules with indispensable functions in various biological processes. Glypicans are a family of HSPG’s, characterized by a Gpi-anchor which directs them to the cell surface and/or extracellular matrix where they regulate growth factor signaling during development and disease. We report the identification and expression pattern of glypican genes from zebrafish. The zebrafish genome contains 10 glypican homologs, as opposed to six in mammals, which are highly conserved and are phylogenetically related to the mammalian genes. Some of the fish glypicans like Gpc1a, Gpc3, Gpc4, Gpc6a and Gpc6b show conserved synteny with their mammalian cognate genes. Many glypicans are expressed during the gastrulation stage, but their expression becomes more tissue specific and defined during somitogenesis stages, particularly in the developing central nervous system. Existence of multiple glypican orthologs in fish with diverse expression pattern suggests highly specialized and/or redundant function of these genes during embryonic development.
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Identification and Expression Analysis of Zebrafish Glypicans during Embryonic DevelopmentBrand, Michael, Gupta, Mansi 02 December 2015 (has links)
Heparan sulfate Proteoglycans (HSPG) are ubiquitous molecules with indispensable functions in various biological processes. Glypicans are a family of HSPG’s, characterized by a Gpi-anchor which directs them to the cell surface and/or extracellular matrix where they regulate growth factor signaling during development and disease. We report the identification and expression pattern of glypican genes from zebrafish. The zebrafish genome contains 10 glypican homologs, as opposed to six in mammals, which are highly conserved and are phylogenetically related to the mammalian genes. Some of the fish glypicans like Gpc1a, Gpc3, Gpc4, Gpc6a and Gpc6b show conserved synteny with their mammalian cognate genes. Many glypicans are expressed during the gastrulation stage, but their expression becomes more tissue specific and defined during somitogenesis stages, particularly in the developing central nervous system. Existence of multiple glypican orthologs in fish with diverse expression pattern suggests highly specialized and/or redundant function of these genes during embryonic development.
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Muster und Funktionen von Apoptose und Proliferation während der Morphogenese der Somiten von <i>Tupaia belangeri</i> (Tupaiidae, Scandentia, Mammalia) / Patterns and functions of apoptosis and proliferation during the morphogenesis of somites in <i>Tupaia belangeri</i> (Tupaiidae, Scandentia, Mammalia)Büttner, Benedikt 30 January 2012 (has links)
No description available.
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