Calomys Callosus
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. A new species of Calomys Waterhouse (Rodentia, Sigmodontinae)from the Cerrado of Central Brazil
A new Brazilian Calomys Waterhouse, 1837 species is described based on morphologic and karyologic data. This species is endemic to the Cerrado of Central Brazil and allopatric with all other species of the genus Calomys. Its chromosome complement (2n = 46, AN = 66) is different from those described in other Calomys species. Morphometric analysis significantl
Revista Brasileira de Zoologia. Publicado em: 2003-06
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14. Intestinal fibrovascular nodules caused by Schistosoma mansoni infection in Calomys callosus Rengger, 1830 (Rodentia: Cricetidae): a model of concomitant fibrosis and angiogenesis
Human schistosomiasis develops extensive and dense fibrosis in portal space, together with congested new blood vessels. This study demonstrates that Calomys callosus infected with Schistosoma mansoni also develops fibrovascular lesions, which are found in intestinal subserosa. Animals were percutaneously infected with 70 cercariae and necropsied at 42, 45, 5
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-10
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15. Natural Schistosoma mansoni infection in Nectomys squamipes: histopathological and morphometric analysis in comparison to experimentally infected N. squamipes and C3H/He mice
Histopathologic and morphometric (area, perimeter, major and minor diameters) analysis of hepatic granulomas isolated from twelve naturally infected Nectomys squamipes were compared to four experimentally infected ones and six C3H/He mice. Liver paraffin sections were stained for cells and extracellular matrix. Both groups of N. squamipes presented peculiar
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-10
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16. Fibrogenesis and collagen resorption in the heart and skeletal muscle of Calomys callosus experimentally infected with Trypanosoma cruzi: immunohistochemical identification of extracellular matrix components
Intense inflammatory lesions and early development of interstitial fibrosis of the myocardium and skeletal muscle with spontaneous regression, have been described in Calomys callosus infected with Trypanosoma cruzi. The genetic types of collagen present in this model were investigated through immunohistochemistry using specific antibodies, combined with hist
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-07
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17. Reparação de feridas cutâneas de roedores da espécie Calomys callosus, tratadas com hidrocarboneto alifático: aspectos morfométricos, morfológicos e histológicos
O efeito cicatrizante do hidrocarboneto alifático foi pesquisado através da aplicação diária em feridas cutâneas, cirurgicamente provocadas, em roedores da espécie Calomys callosus. As feridas dos animais foram analisadas sob os aspectos macroscópicos e histológicos transcorridos 3, 7, 14 e 21 dias de tratamento e comparado com o uso de solução fi
Brazilian Journal of Veterinary Research and Animal Science. Publicado em: 2001
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18. Efeito do fogo em comunidades de pequenos mamiferos de cerrado do Brasil Central
The cerrado harbours about 60 species of small mammals. Despite the frequent occurrence of fire in this vegetation type, few studies have analyzed the effects of fire on the small mammal communities of cerrado areas. The purpose of this study was to investigate the effects of fire on small mammal communities of two cerrado areas with different fire frequenci
Publicado em: 1994
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19. Estudo da resposta imune de calomys callosus (Rodentia-cricetidae) a hemacias de carneiro e trypanosoma cruzi
Investigamos se a resistência relativa do C. callosus, reservatório silvestre do T. cruzi à infecção chagásica, é mediada por mecanismos imunológicos. Animais de ambos sexos com peso entre 18 - 24 g e idade de 30 - 40 dias foram inoculados dia O, +5 ou +10 (via intraperitoneal, i.p.) com 5 x l08 hemácias de carneiro (HC)/animal e estimulados com vá
Publicado em: 1985
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20. Effect of Toxoplasma gondii Infection Kinetics on Trophoblast Cell Population in Calomys callosus, a Model of Congenital Toxoplasmosis
This work evaluated the kinetics of events that occur in the placenta of Calomys callosus after Toxoplasma gondii infection. Animals on the first day of pregnancy (dop) and virgin nonpregnant females were perorally infected with 20 cysts of T. gondii strain ME49. After 100 days of infection, the virgin animals were mated and received an additional 20 cysts o
American Society for Microbiology.
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21. Sera from chronic Chagasic patients and rodents infected with Trypanosoma cruzi inhibit trans-sialidase by recognizing its amino-terminal and catalytic domain.
We investigated whether sera from chronic Chagasic patients and animals infected with Trypanosoma cruzi inhibit the removal of sialic acid from human erythrocytes and the transfer of sialic acid from sialyllactose to [14C]lactose in the reactions catalyzed by the parasite trans-sialidase. Sera from Swiss mice and Calomys callosus animals infected with three