Development of a model of focal pneumococcal pneumonia in young rats

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Development of a model of focal pneumococcal pneumonia in young rats

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Title: Development of a model of focal pneumococcal pneumonia in young rats
Author: Saladino, Richard A; Malley, Richard; Stack, Anne Marie; Husson, Robert Neil; Thompson, Claudette M.; Fleisher, Gary Robert

Note: Order does not necessarily reflect citation order of authors.

Citation: Malley, Richard, Anne M. Stack, Robert N. Husson, Claudette M. Thompson, Gary R. Fleisher, and Richard A. Saladino. 2004. Development of a model of focal pneumococcal pneumonia in young rats. Journal of Immune Based Therapies and Vaccines 2: 2.
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Abstract: Background: A recently licensed pneumococcal conjugate vaccine has been shown to be highly effective in the prevention of bacteremia in immunized children but the degree of protection against pneumonia has been difficult to determine. Methods: We sought to develop a model of Streptococcus pneumoniae pneumonia in Sprague-Dawley rats. We challenged three-week old Sprague-Dawley pups via intrapulmonary injection of S. pneumoniae serotypes 3 and 6B. Outcomes included bacteremia, mortality as well histologic sections of the lungs. Results: Pneumonia was reliably produced in animals receiving either 10 or 100 cfu of type 3 pneumococci, with 30% and 50% mortality respectively. Similarly, with type 6B, the likelihood of pneumonia increased with the inoculum, as did the mortality rate. Prophylactic administration of a preparation of high-titered anticapsular antibody prevented the development of type 3 pneumonia and death. Conclusion: We propose that this model may be useful for the evaluation of vaccines for the prevention of pneumococcal pneumonia.
Published Version: doi:10.1186/1476-8518-2-2
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC333431/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:4874841

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