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Study of transneuronal passage of pseudorabies virus in rat central nervous system by use of immunohistochemistry and in situ hybridization.
1995
Sur J.H. | Kim S.B. | Osorio F.A. | Moon O.K.
We studied the uptake and sequential transneuronal passage of pseudorabies virus (PRV) in rat CNS by use of a combination of immunohistochemistry and in situ hybridization. Protocols for rapid detection of PRV by immunohistochemistry and in situ hybridization in rats with PRV infection of the CNS after intranasal instillation of a wild-type strain of PRV were optimized in vitro, using porcine kidney-15 cells. Pseudorabies virus-specific hybridization signals appeared in the cytoplasm and nucleus of PRV-infected porcine kidney-15 cells by postinoculation (PI) hour 6. In tissue sections of PRV-infected rats, PRV nucleic acids were detected in areas of the rat brain in close proximity to the areas in which PRV antigens were evident. The PRV was initially found in the nucleus of trigeminal ganglion neurons at PI hour 24. At PI hour 72, PRV antigens were observed in the mid-brain, and 24 hours later, in the telencephalon. We also found evidence of specific progressive transsynaptic transmission of the virus, and, on the basis of that, we have constructed a map of the synaptic contacts and pathways in the brain. Therefore, combined use of immunohistochemistry and in situ hybridization was useful for characterizing the pathogenesis of PRV in the CNS of rats after intranasal inoculation, following a pattern that mimics PRV infection of the natural host.
Mostrar más [+] Menos [-]In vitro platelet release by rat megakaryocytes: effect of heterologous antiplatelet serum.
1987
Handagama P.J. | Jain N.C. | Feldman B.F. | Farver T.B. | Kono C.S.
Bicephalic larval cestode of Taeniidae from rats in Malaysia.
1987
Kamiya M. | Ooi H.K. | Ohbayashi M. | Ow Yang C.K.
Reactivity of polyclonal human CD3 antiserum in lymphoid tissues of cattle, sheep, goats, rats and mice.
1994
Ramos Vara J.A. | Miller M.A. | Lopez E. | Prats N. | Brevik L.
Polyclonal rabbit antiserum to human T-cell CD3 was used to study its reactivity in lymphoid tissues (lymph nodes, spleen, aggregated lymphoid follicles [Peyer's patches], thymus) of several animal species (cattle, sheep, goats, rats, and mice). Using a peroxidase-antiperoxidase technique on formalin-fixed and paraffin-embedded tissues, immunoreactive cells were detected in T cell-dependent areas of the lymphoid tissues. Reactivity was high in all species tested, but mouse tissues had reduced reactivity, compared with the other species. To obtain a reaction, it was necessary to digest tissues with pronase before application of the immunocytochemical technique. Our results indicate that CD3 antiserum may specifically recognize T-lymphoid cells as it does in human lymphoid tissues and can be used as a marker to study physiologic and pathologic conditions of the lymphoid system of these species.
Mostrar más [+] Menos [-]Effect of Artemisia Iwayomogi water extract on hepatic injury by carbon tetrachloride in rats - (1) - Effect of serum AST, ALT, LDH activities, lipid content and liver peroxide content.
1992
Kim K.S. | Park J.H.
Isolation and morphological characterization of natural killer cell in the Sprague-dawley (SD) rats.
1992
Kang K.S. | Lee Y.S.
Spontaneous lingual papillomas in fischer 344 rats.
1992
Kang B.H. | Lim C.H.
Perfect state of Microsporum gypseum complex isolated from animals and soils.
1988
Lee H.J. | Choi W.P.
Mating experiments were performed to elucidate the distribution of perfect state of Microsporum gypseum complex originating from animals and soils in Korea. A total of 30 strains of M. gypseum complex, composed of 16 from animals and 14 from soils, mated with the tester strains of Nannizzia incurvata, N. gypsea and N. fulva. Among 30 strains of M. gypseum complex examined, 16 strains (53.3%) were N. incurvata, 13 strains (43.3%) N. gypsea and 1 strain (3.3%) N. fulva. Among 13 strains of dog isolates, 8 strains (61.5%) were N. incurvata and 5 strains (38.5%) N. gypsea. And each strain isolated from Korean native goat, monkey and albino rat was N. gypsea. Among 14 strains of soil isolates, 8 strains (57.2%) were N. incurvata, 5 strains (35.7%) N. gypsea and 1 strain (7.2%) N. fulva. And - mating type was more frequently obseved than + mating type in the strains of N. incurvata and N. gypsea. By this study, N. fulva was isolated the first time in Korea.
Mostrar más [+] Menos [-]Histological observations of the parenchymal organs of the rats, rabbits and dogs injected with Rompun.
1984
Oh K.S. | Lee C.S.
This study was carried out to observe the histological changes of the parenchymal organs of the rats, rabbits and dogs intramuscularly injected with Rompun. There were severe hyperemia of spleen, hyperemia and extension of the central vein of the liver, centrilobular degeneration of liver, hyperemia and hemorrhage of the kidney, necrosis and hydropic degeneration of renal tubule, hyperemia of pulmonary alveolar septa and pulmonary edema, and in the cases injected with Rompun and histamine or pentothal sodium at the same time, the microscopical findings described above were more conspicuous than the cases injected with Rompun alone.
Mostrar más [+] Menos [-]Activity and application of 20alpha-hydroxysteroid dehydrogenase in rat-(1)-Changes in activities of 20alpha-hydroxysteroid dehydrogenase and serum progesterone concentration.
1994
Kang C.B. | Kwak S.D.