Sporozoites
Mostrando 1-12 de 222 artigos, teses e dissertações.
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1. Isospora machadoae sp. nov. (Protozoa: Apicomplexa: Eimeriidae), a new coccidian species from white-necked thrushes Turdus albicolis (Passeriformes: Turdidae) of South America
ABSTRACT A new coccidian species parasitizing white-necked thrushes Turdus albicollis Vieillot, 1818 is described from the Parque Nacional do Itatiaia, in Southeastern Brazil. Isospora machadoae sp. nov. has oocysts that are sub-spherical, 22.2 × 21.2 µm, with bilayered wall, ~1.3 μm thick. Outer layer is rough with micropyle and micropyle cap. Oocyst res
Zoologia (Curitiba). Publicado em: 26/04/2018
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2. Anopheles gambiae eicosanoids modulate Plasmodium berghei survival from oocyst to salivary gland invasion
Eicosanoids affect the immunity of several pathogen/insect models, but their role on the Anopheles gambiae response to Plasmodium is still unknown. Plasmodium berghei-infected mosquitoes were injected with an eicosanoid biosynthesis inhibitor, indomethacin (IN), or a substrate, arachidonic acid (AA), at day 7 or day 12 post-infection (p.i.). Salivary gland i
Mem. Inst. Oswaldo Cruz. Publicado em: 19/08/2014
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3. Estudo da importância da cadeia lateral dos resíduos de aminoácidos da Angiotensina II, na ação biológica contra os esporozoítas da malária / Study of the importance of the side chain of amino acid residues of Angiotensin II, the biological action against malaria sporozoites
A malária é uma doença infecciosa febril aguda, cujo agente etiológico é o protozoário do gênero Plasmodium. Essa doença é transmitida por vetores, mosquitos do gênero Anopheles, destacando-se pela sua importância o A. darlingi. A Organização Mundial da Saúde (OMS) relata que 250-500 milhões de pessoas adquirem malária anualmente com, pelo me
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/02/2011
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4. TLR5-dependent immunogenicity of a recombinant fusion protein containing an immunodominant epitope of malarial circumsporozoite protein and the FliC flagellin of Salmonella Typhimurium
Recently, we described the improved immunogenicity of new malaria vaccine candidates based on the expression of fusion proteins containing immunodominant epitopes of merozoites and Salmonella enterica serovar Typhimurium flagellin (FliC) protein as an innate immune agonist. Here, we tested whether a similar strategy, based on an immunodominant B-cell epitope
Memórias do Instituto Oswaldo Cruz. Publicado em: 2011-08
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5. Eimeria pavoaegyptica sp. nov. (Apicomplexa: Eimeriidae) in faeces of Indian peacocks, Pavo cristatus Linnaeus, 1758 (Galliformes: Phasianidae) from Egypt
Coprological examination of 15 Indian peacocks, Pavo cristatus, revealed the presence of a coccidium species of the genus Eimeria, which apparently represents a previously undescribed species. Sporulation is exogenous and fully developed oocysts of Eimeria pavoaegyptica sp. nov. are ellipsoidal, with a dimension of 15 (13-16) × 12 (10-12.9) μm and with a s
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-12
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6. Estudos da ação de análagos cíclicos da angratensina II nos esporozóitas da Malária / Studies of the action of cyclic analogs of angiotensin II in the Malaria sporozoites
A malária é uma doença infecciosa, grave, causada por parasitas (protozoários do gênero Plasmodium) que são transmitidos principalmente, de uma pessoa para outra pela picada de mosquitos do gênero Anopheles. Mais de 300 milhões de pessoas são infectadas no mundo a cada ano. Drogas como a cloroquina, a mefloquina, entre outras podem ter efeitos colat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/12/2009
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7. Differential expression analysis between merozoites and sporozoites of Eimeria tenella using LongSage. / Análise da expressão diferencial entre merozoítos e esporozoítos de Eimeria tenella empregando a técnica de LongSAGE.
Eimeria tenella is one of the most important causing agents of poultry coccidiosis. To study the quantitative gene expression profile in zoite stages of LongSage libraries were generated from merozoites and sporozoites. More than 35.000 tags were obtained, whose 9.516 were unique. For identification and annotation of differential expressed genes, tags were e
Publicado em: 2009
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8. Análise da expressão de regiões da proteína Circumsporozoíta de Plasmodium sp. em Aedes aegypti infectado por Plasmodium gallinaceum. / Expression analyses of Plasmodium sp. Circumsporozoite protein regions in Plasmodium gallinaceum infected Aedes aegypti.
Transgenic mosquitoes that impair malaria transmission can be an alternative control but currently an effective line is not available. A better understanding of mosquito interaction with pathogens is very important to improve refractory transgene design. Circumsporozoite protein (CSP) has two conserved domains that could be involved in spz penetration into m
Publicado em: 2009
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9. Characterization of Tyzzeria parvula (Kotlan, 1933) Klimes, 1963 oocysts (Apicomplexa: Eimeriidae) of the greylag goose (Anser anser Linnaeus, 1758) in Brazil. / Caracterização dos oocistos de Tyzzeria parvula (Kótlan, 1933) Klimes, 1963 (Apicomplexa: Eimeriidae) do ganso doméstico (Anser anser) no Brasil.
The principal objective of this research was to describe an coccidium found in the feces of greylag goose Anser anser Linnaeus, 1758. Based on morphometric analysis of these sporulated oocysts, they were classified as Tyzzeria parvula (Kótlan, 1933) Klimes, 1963. This coccidium was described for the firt time in goose of Brazil at rural and urban areas from
Publicado em: 2008
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10. More productive in vitro culture of Cryptosporidium parvum for better study of the intra- and extracellular phases
The great difficulties in treating people and animals suffering from cryptosporidiosis have prompted the development of in vitro experimental models. Due to the models of in vitro culture, new extracellular stages of Cryptosporidium have been demonstrated. The development of these extracellular phases depends on the technique of in vitro culture and on the s
Memórias do Instituto Oswaldo Cruz. Publicado em: 27/07/2007
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11. Three new species of Isospora Schneider, 1881 (Apicomplexa: Eimeriidae) from the lesser seed-finch, Oryzoborus angolensis (Passeriformes: Emberizidae) from Brazil
Three new coccidian (Apicomplexa: Eimeriidae) species are reported from the lesser seed-finch, Oryzoborus angolensis from Brazil. Sporulated oocysts of Isospora curio n. sp. are spherical to subspherical; 24.6 × 23.6 (22-26 × 22-25) mum, shape-index (SI, length/width) of 1.04 (1.00-1.15). Oocyst wall is bilayerd, ~ 1.5 mum thick, smooth and colourless. Mic
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-08
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12. Eimeria lepidosirenis n.sp. (Apicomplexa:Eimeriidae) of the South American lungfish Lepidosiren paradoxa (Osteichthyes:Dipnoi) from Amazonian Brazil
The mature oocysts of Eimeria lepidosirenis n.sp. are described in faeces removed from the lower region of the intestine of a single specimen of the South American lungfish Lepidosiren paradoxa, from Belém, state of Pará, Amazonian Brazil. Oocysts with endogenous sporulation: spherical to slightly subspherical, 30.8 × 30.3 µm (28.1 × 25.9 -33.3 × 31.8)
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-05