Ndna
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Can sexual transmission support the enzootic cycle of Trypanosoma cruzi?
BACKGROUND Trypanosoma cruzi circulates in sylvatic habitats, mainly through blood-feeding triatomines, although other routes also contribute to its dispersion. Sexual transmission of T. cruzi is an understudied topic, especially among wild mammals. Because of the difficulties inherent to field work, experimentally infected mice are frequently used to evalu
Mem. Inst. Oswaldo Cruz. Publicado em: 2018-01
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2. Revisão das espécies de Macrobrachium, Bate, 1868, pertencentes ao complexo M. olfersii (Crustacea, Palaemonidae): análises morfológicas e moleculares / Revision of species from Macrobrachium, Bate, 1868, that belonging M. olfersii complex (Crustacea, Palaemonidae): morphologic and molecular analysis.
Pesquisas envolvendo a sistemática e a taxonomia de camarões de água doce do gênero Macrobrachium Bate, 1868 ainda são pouco elucidativas para alguns de seus membros. Este é o caso de Macrobrachium olfersii (Wiegmann, 1836) que ocorre desde o sudeste dos Estados Unidos até o sul do Brasil e é comumente confundido com espécies que ocorrem preferencia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/04/2012
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3. Diversidade e estruturação genética de Brachyteles hypoxanthus (Primates: Atelidae) em um ambiente fragmentado no município de Santa Maria de Jetibá (ES) usando DNA mitocondrial e nuclear
Brachyteles hypoxanthus, northern muriqui, is threatened by the small number of individuals in the wild, distributed in only 12 isolated populations, being classified as "critically endangered" species. Mitochondrial DNA (mtDNA) studies revealed the population of Santa Maria de Jetibá (SMJ) as a Management Unit, despite of habitat smaller and highly fragmen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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4. Estudos de sistemática molecular e de biogeografia histórica do bagre de água doce Pseudoplatystoma Bleeker, 1862 (Pimelodidae) na América do Sul
The catfishes of the Pseudoplatystoma genus are carnivore pimelodids, migratory and important for fisheries in all major river basins from South America. Only three species were recognized for the genus (P. corruscans, P. fasciatum and P. tigrinum), but a new revision raised to eight the number of species (P. fasciatum, P. punctifer, P. orinocoense, P. magda
Publicado em: 2010
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5. Simultaneous quantitative assessment of circulating cell-free mitochondrial and nuclear DNA by multiplex real-time PCR
Quantification of circulating nucleic acids in plasma and serum could be used as a non-invasive diagnostic tool for monitoring a wide variety of diseases and conditions. We describe here a rapid, simple and accurate multiplex real-time PCR method for direct synchronized analysis of circulating cell-free (ccf) mitochondrial (mtDNA) and nuclear (nDNA) DNA in p
Genetics and Molecular Biology. Publicado em: 2009
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6. Resurrection of Anopheles goeldii from synonymy with Anopheles nuneztovari (Diptera, Culicidae) and a new record for Anopheles dunhami in the Brazilian Amazon
Nucleotide sequences of the internal transcribed spacer 2 (ITS2) rDNA and partial sequences of the cytochrome coxidase subunit I (COI) mtDNA and white gene nDNA were obtained from specimens of Anopheles nuneztovari A collected in Macapá (state of Amapá), Óbidos, Prainha and Almeirim (state of Pará), Itacoatiara and Parintins (state of Amazonas), Brazil,
Memórias do Instituto Oswaldo Cruz. Publicado em: 2008-12
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7. Estudo da variabilidade genética inter e intra-específica de Leishmania (Leishmania) chagasi (Cunha &Chagas, 1937) e Leishmania (L.) infantum (Nicolle, 1908),
Resumo A leishmaniose visceral ou calazar é uma doença potencialmente fatal para o homem, tendo como agentes etiológicos as espécies de Leishmania do complexo L. (Leishmania) donovani: L. donovani e L. infantum, ambas no Velho Mundo e L. chagasi no Novo Mundo. Apesar de inúmeros estudos realizados sobre as doenças causadas por esses parasitos, a epidem
Publicado em: 2007
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8. A reliable assessment of 8-oxo-2-deoxyguanosine levels in nuclear and mitochondrial DNA using the sodium iodide method to isolate DNA
A major controversy in the area of DNA biochemistry concerns the actual in vivo levels of oxidative damage in DNA. We show here that 8-oxo-2-deoxyguanosine (oxo8dG) generation during DNA isolation is eliminated using the sodium iodide (NaI) isolation method and that the level of oxo8dG in nuclear DNA (nDNA) is almost one-hundredth of the level obtained
Oxford University Press.
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9. Evaluation of a semiautomated prestandardized immunofluorescence test system for detection of anti-native deoxyribonucleic acid antibodies.
An immunofluorescence-native deoxyribonucleic acid (nDNA) antibody test system (Zeus Scientific, Inc.) was compared with a radioimmunoassay procedure (FARR assay) for detecting anti-nDNA antibodies in human serum. Double-blind studies of split samples obtained from 236 patients showed an 80% correlation between the immunofluorescence-nDNA antibody test syste
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10. Does oxidative damage to DNA increase with age?
The levels of 8-oxo-2-deoxyguanosine (oxo8dG) in DNA isolated from tissues of rodents (male F344 rats, male B6D2F1 mice, male C57BL/6 mice, and female C57BL/6 mice) of various ages were measured using sodium iodide to prevent oxidative damage to DNA during DNA isolation. Oxo8dG was measured in nuclear DNA (nDNA) isolated from liver, heart, brain, kidney, ske
The National Academy of Sciences.
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11. Conflict between nuclear and mitochondrial DNA phylogenies of a recent species radiation: What mtDNA reveals and conceals about modes of speciation in Hawaiian crickets
It has been asserted that recent mtDNA phylogenies support the plausibility of sympatric speciation, long considered a controversial mechanism of the origin of species. If such inferences are reliable, mtDNA phylogenies should be congruent with phylogenies based on other data. In previous work, a mtDNA phylogeny suggested that diversification of the Hawaiian
National Academy of Sciences.
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12. Detection of anti-DNA antibody using synthetic antigens. Characterization and clinical significance of binding of poly (deoxyadenylate-deoxythymidylate) by serum.
Virtually all preparations of DNA used to detect antibody to native DNA (nDNA) by binding assays have been found to be subtly contaminated by single stranded DNA. Because recent DNA binding data have directly challenged the unique role previously attributed to these antibodies in systemic lupus erythematosus (SLE), resolution of the consequent ambiguity is o