Dugesia
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Morphological changes of gonad and gene expression patterns during desexualization in Dugesia japonica (Platyhelminthes: Dugesiidae)
ABSTRACT Planarians, the representatives of an ancient bilaterian group with complex reproductive system and high regenerative capabilities, are model system suitable for studying the basic molecular requirements for the development of the reproductive system. To further explore the morphological changes of the gonads during desexualization and the molecular
Zoologia (Curitiba). Publicado em: 13/09/2018
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2. Avaliação da genotoxicidade e estresse oxidativo em planárias aquáticas (Dugesia schubarti) tratadas com formulações do herbicida glifosato
Atualmente, diversas formulações de herbicidas a base de glifosato estão disponíveis no mercado. No entanto, diferentes surfactantes são também adicionados às formulações a fim de aumentar a eficácia do produto, o que pode contribuir significativamente para o aumento da toxicidade do herbicida aos organismos não alvos. Este estudo avaliou a genoto
Publicado em: 2007
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3. Avaliação do potencial tóxico e genotóxico do sulfato de cobre em planária : utilidade deste organismo para biomonitoramento ambiental
A poluição do meio ambiente por metais pesados apresenta um problema grave devido a sua alta toxicidade e a capacidade de bioacumulação. Tendo em vista o vasto uso do sulfato de cobre em algumas indústrias e nas lavouras do Rio Grande do Sul, e a importância de se avaliar possíveis danos causados nos seres vivos, o objetivo deste trabalho foi determin
Publicado em: 2007
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4. Identification of the Boudicca and Sinbad retrotransposons in the genome of the human blood fluke Schistosoma haematobium
Schistosomes have a comparatively large genome, estimated for Schistosoma mansoni to be about 270 megabase pairs (haploid genome). Recent findings have shown that mobile genetic elements constitute significant proportions of the genomes of S. mansoni and S. japonicum. Much less information is available on the genome of the third major human schistosome, S. h
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-08
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5. Morfometria de olhos em regenerantes do gênero Dugesia (Platyhelminthes, Turbellaria, Dugesiidae)
A técnica de fotodocumentação foi utilizada para observar semanalmente os olhos de regenerantes de três espécies de Dugesia até o final do processo regenerativo. Os dados morfométricos analisados foram baseados na mensuração de 96 exemplares das espécies: Dugesia tigrina, D. schubarti e D. anderlani. Uma análise comparativa foi realizada por meio
Brazilian Journal of Biology. Publicado em: 2004-02
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6. Fresh-water planarias and a marine planaria are relatively dissimilar in the 5S rRNA sequences.
The nucleotide sequences from fresh-water Dugesia japonica and marine Planocera reticulata have been determined. The similarity between these two species is only 69%. The Planocera sequence reveals nearly 80% similarity (72-81%) to the sequences of multicellular animals, while the Dugesia sequences are considerably different from them (66-73%).
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7. Isolation and expression of a Pax-6 gene in the regenerating and intact Planarian Dugesia(G)tigrina
The Pax-6 gene encodes a transcription factor containing both a paired and a homeodomain and is highly conserved among Metazoa. In both vertebrates and invertebrates, Pax-6 is required for eye morphogenesis, development of parts of the central nervous system, and, in some phyla, for the development of olfactory sense organs. Ectopic expression of Pax-6 from
The National Academy of Sciences.
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8. Ordered differential display: a simple method for systematic comparison of gene expression profiles.
A method for display of 3'-end restriction fragments of cDNAs is proposed, extending the idea reported recently. First, representative pools of such fragments are selectively amplified using PCR suppression effect. Then, simplified subsets of these fragments suitable for comparison by PAGE are amplified by adapter-specific primers extended by two randomly pi
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9. Multiple isoform recovery (MIR)-PCR: a simple method for the isolation of related mRNA isoforms.
We present a rapid and efficient method for the detection of related transcripts with different expression levels. This approach combines the rapid amplification of cDNA ends (RACE) method with a cDNA subtractive technique. The strategy is based on successive subtractions of prevalent isoforms resulting in enrichment of less expressed transcripts. For each s
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10. Planarian homeobox genes: cloning, sequence analysis, and expression.
Freshwater planarians (Platyhelminthes, Turbellaria, and Tricladida) are acoelomate, triploblastic, unsegmented, and bilaterally symmetrical organisms that are mainly known for their ample power to regenerate a complete organism from a small piece of their body. To identify potential pattern-control genes in planarian regeneration, we have isolated two homeo