Reduction of scrapie incubation time in mice and hamsters by a single injection of methanol extraction residue of bcg

Kimberlin, R.H.; Cunnington, P.G.

doi:10.1111/j.1574-6968.1978.tb01910.x

Cited by 24 publications

References 12 publications

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Effect of Bacterial Flora and Mouse Genotype (Euthymic or Athymic) on Scrapie Pathogenesis

Wade

Dees

German

et al. 1986

Journal of Leukocyte Biology

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Euthymic and athymic female BALB/c mice, reared under either germfree or defined flora conditions, were used to investigate the pathogenesis of scrapie after intracerebral or intraperitoneal inoculation. Time in days to onset of clinical signs (Stage I), to endstage (Stage II), and the time interval between Stage I and Stage II were compared among groups. In addition, scrapie agent titers in spleen were determined at 28 and 90 days after infection, as were agent titers in spleen and brain at Stage II. Three-way analysis of variance indicated that the bacterial flora, the presence or absence of a thymus, and the route of agent inoculation interact to produce significant differences in the pathogenesis of disease. The three factors in the experimental design also influenced the spleen titers of scrapie infectivity. The variation in scrapie pathogenesis among the groups of mice is likely to be mediated by differences in their reticuloendothelial systems. These differences may alter the agent's adsorption in spleen and/or route of transport from spleen to brain.

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