Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Axolotl"”.
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The Effects of Retinoids on Regenerating Axolotl Limbs
The limbs of amphibians normally regenerate only those parts distal to the amputation plane, an observation that has been formalized as the rule of distal transformation. The basis for this rule is the inheritance by the blastema of a cellular memory of its position of origin, termed positional …
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Control of heart development in the Mexican axolotl (Ambystoma mexicanum).
… is the cardiac-lethal (c) mutant in the axolotl (Ambystoma mexicanum). Embryos homozygous for the c gene develop hearts which never begin to beat, become severely deformed due to the lack of circulation, and die shortly after hatching. The mutation was believed to affect the tissue …
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The role of retinoids in the regeneration of the axolotl spinal cord
… production has been described in juvenile Axolotl ependymal cells. Retinoid effects may possess a significant role in the regeneration-permissive interaction of the meninges and ependyma of the Axolotl spinal cord after penetrating injury. During spinal cord regeneration in urodele …
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Meningeal Fibrosis in the Axolotl Spinal Cord: Extracellular Matrix and Cellular Responses
… functional recovery are not yet available. The axolotl, Ambystoma mexicanum, is a valuable animal model in the investigation of spinal cord regeneration, as this urodele is able to achieve functional recovery even after complete spinal cord transection. Understanding the similarities and …
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Hearing Sensitivity and the Effect of Sound Exposure on the Axolotl (Ambystoma Mexicanum)
<p>The axolotl (Ambystoma mexicanum) has been used as a model organism for studying development, genetics, and regeneration. Although the sensory hair cells of the lateral line of this species have been shown to be able to regenerate, it is not known whether this also occurs in the inner ear. In …
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Development of transgenic Ambystoma mexicanum (axolotl) to study cell fate during development and regeneration
The establishment of transgenesisi in axolotls is crucial for studying development and regeneration, as it would allow for long-term fate tracing as well as gene expression analysis, therefore we were interested in both obtaining animals expresing the transgene with little mosaicism in F0 …
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Effects of retinoic acid on ribosomal RNA gene expression during limb regeneration
… 3-finger bud (3-FB). Xenopus nuclear rDNA and axolotl 16S mitochondrial rDNA fragments were used to detect rDNA and rRNA during regeneration. Nuclear rDNA was amplified during the MB stage of regeneration in the absence of RA. The amplified rDNA did not appear to be contributing to the 18S and …
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Studying the Molecular Mechanisms for Generating Progenitor Cells during Tail Regeneration in Ambystoma mexicanum
… are the mexican salamander Ambystoma mexicanum (axolotl) and a cell line derived from the newt Notophthalmus viridescens. In order to monitor gene expression on a cellular level during regeneration, I worked out a good in situ hybridization protocol on axolotl tissue cryosections. To be able to …
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"The use of retinoids and an in vivo ""affinophoresis"" assay to analyze the cellular basis of positional memory in regenerating axolotl limbs"
… the proximodistal (PD) axis of regenerating axolotl limbs, and several experiments employing retinoic acid (RA) designed to correlate these differences with positional memory.
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Evolution of Endothelin Signaling and Diversification of Adult Pigment Patterns
… types in the developmental model the Mexican axolotl (Ambystoma mexicanum), suggesting a model for evolutionary changes in Edn3 requirements in pigment pattern diversification across vertebrates. We show that the locus responsible for the historic axolotl pigment phenotype, “white” (d/d), is …
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Regeneration of Hair Cell Epithelia in the Chick and Salamander
… with identifying the molecular clues used by the axolotl salamander to regulate this regeneration. Alcian blue staining was used to compare the extracellular matrix of normal and regenerating neruomasts. Alcian blue staining at two different pHs can distinguish between highly sulfated and …
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Positional Information in Adult Bilaterian Tissues
… regional gene expression in the regenerative axolotl limb and the non-regenerative mouse limb. This analysis revealed that, while developmental signaling factors rarely recapitulate developmental expression patterns in the limb, several developmental transcription factors are indeed expressed …
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Metamorfosis Y Transformación En Holmberg, Lugones Y Cortázar (1906-1956)
… Eduardo Holmberg; "Yzur," de Leopoldo Lugones y "Axolotl," de Julio Cortázar. El propósito de esta tesis es mostrar que en cada caso los escritores se valieron de la metamorfosis para representar el origen del hombre. Para fundamentar este planteamiento, nos hemos sustentado en El mito del eterno …
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Studying the Patterning Mechanisms and Cell Fates during Limb Regeneration in Ambystoma mexicanum
… and cell fates during limb regeneration in the axolotl. 1) It is crucial to understand the earliest events of patterning. Since it is technically challenging to study early events, we established single cell PCR. This new tool will allow us to obtain novel insight into the initial steps of limb …
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Bmp proteins in urodele myotube cell cycle re-entry and in regeneration
… of Bmp signaling in vivo causes defects in axolotl tail regeneration.
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Studies in Amphibian Limb Development and Regeneration
… species: young Xenopus laevis, and the axolotl, Ambystoma mexicanum. We found that digit identity determination is indeed conserved across these species, and that the capability to regenerate limbs and digits or to condense the digits in opposite sequence from that in most tetrapods does …
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Novel approaches for large-scale phylogenetics and applications in the context of the amphibian tree of life
… a lower number of miRNAs discovered using the Axolotl transcriptome. This suggests that not using genomic data is not ideal to validate miRNAs. Nevertheless, in spite of the limitations, I was able to find two potential novel miRNAs: one supporting the monophyly of Lissamphibia, and another …
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