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Biotin/avidin sandwich enzyme-linked immunosorbent assay for Culicidae mosquito blood meal identification J. Venom. Anim. Toxins incl. Trop. Dis.
Marassá,A. M.; Rosa,M. D. B.; Gomes,A. C.; Consales,C. A..
The knowledge of mosquitoes Culicidae host feeding patterns is basic to understand the roles of different species and to indicate their importance in the epidemiology of arthropod-borne diseases. A laboratory assay was developed aiming at standardizing the biotin-avidin sandwich enzyme-linked immunosorbent assay, which was unprecedented for mosquito blood meal identification. The enzyme-linked immunosorbent assay (ELISA) activity was evaluated by the detection of titers on each sample of the 28 blood-fed Culex quinquefasciatus. In light of the high sensitivity that the technique permits, by means of small quantities of specific antibodies commercially provided and phosphatase substrate which reinforces additional dilutions, human and rat blood meals were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biotin/avidin sandwich enzyme-linked immunosorbent assay; Culicidae; Blood meal identification.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992008000200008
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Immunopathology of rabies infection in mice selected for high or low acute inflammatory reaction J. Venom. Anim. Toxins incl. Trop. Dis.
Achkar,S. M.; Sinhorini,I. L.; Ribeiro,O. G.; Carrieri,M. L.; Ceretta,R. S.; Consales,C. A..
Rabies is a severe and lethal disease that produces a slight inflammatory response during the infection process. We analyzed the immunopathological mechanisms that occur in the central nervous system (CNS) using mice genetically selected for maximal or minimal acute inflammatory reaction (AIRmax or AIRmin). As viral samples, we adopted the antigenic variant 3 (AgV3) of rabies virus from hematophagous bats and a fixed virus strain (PV1 43/3). Titration of specific antibodies was performed using enzyme-linked immunosorbent assay (ELISA). We observed a slight increase in IgG and IgG1 isotypes in infected AIRmax mice. Incubation period, determined by intracerebral inoculation with 100 LD50, was 6-7 days for PV1 43/4 strain and 9-10 days for AgV3. No difference...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rabies; Virus replication; Pathology; Inflammation; Immunoglobulin isotypes.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000100003
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Lack of correlation between rabies virus replication in the brain and antibody isotype profile in genetically modified mice J. Venom. Anim. Toxins incl. Trop. Dis.
Consales,C. A.; Pereira,C. A.; Passos,E. C.; Carrieri,M. L.; Galina,N. M. F.; Sant'Anna,O. A..
The relationship among the phenotypes resistance to infection, virus replication in the brain and isotype production was investigated in genetically modified High (H) or Low (L) antibody responder mouse lines. Although they express the same innate susceptibility to rabies infection, these lines differ as to different viral replication rates in the central nervous system and L mice showed a higher permissible state. After intramuscular infection with the Pasteur rabies strain (PV), the H-L interline differences on the earlier stage of virus replication were 1000 and 80 folds on days 5 and 6, respectively. The isotype profile in sera of the experimentally infected mice reflected an interline difference of 25 folds for IgG2a throughout the infection period,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rabies; Infection; Isotypes; Nervous system.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000300007
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Rabies review: immunopathology, clinical aspects and treatment J. Venom. Anim. Toxins incl. Trop. Dis.
Consales,C. A.; Bolzan,V. L..
Among the diseases of viral origin, rabies is unique in its distribution and range of victims since it can afflict all warm-blooded animals. The interaction between the virus and the host population has facilitated the survival of the disease. The rabies virus (RV) has not changed in any significant way and has been capable of taking advantage of conditions suited to the continuance of rabies. Infection by RV is invariably lethal in the absence of protective immune response which, however, can contribute to the pathogenesis of rabies. Proinflammatory cytokines might affect, directly or indirectly, the levels of neurotrophins, growth factors, neurotransmitters and neurotoxins in the brain by activating glia, neurons, and vascular and immune cells. Although...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rabies; Immunopathology; Clinical aspects; Treatment.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000100002
Registros recuperados: 4
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