• Kansenshogaku Zasshi · Aug 1993

    Comparative Study

    [An infection model which was induced in a carboxymethyl cellulose (CMC) pouch on the back of the rat].

    • T Kawashima, J Takemoto, H Tsukada, T Hasegawa, K Wada, and M Arakawa.
    • Department of Medicine (II), Niigata University School of Medicine.
    • Kansenshogaku Zasshi. 1993 Aug 1;67(8):747-52.

    AbstractThe air-pouch model of inflammation in rats is excellent in that it allows quantitative evaluation of inflammation, and it is used for analysis of inflammatory mediators and as an evaluation system for anti-inflammatory drugs. We investigated the possibility of using this system as an experimental infection system. As a result, inflammation was found to be caused by injection of a constant amount of Staphylococcus aureus solution (10(4)-10(8)). The amount of infiltration and the number of infiltrating cells varied with quantity of bacteria. The infiltrating cells consisted mainly of neutrophils. In this experimental model of infectious disease, the severity of inflammation could be quantitatively evaluated as a function of time in terms of bacterial proliferation and the body's response to bacterial proliferation based on the amount of fluid in the air pouch and the number of infiltrating cells, suggesting that the model is useful. In this experimental system, there were no differences between the number of live bacteria, the number of infiltrating cells or the amount of infiltration when S. aureus Smith strain and clinically-isolated methicillin-resistant S. aureus (MRSA) were used, suggesting that there is no difference between the inflammation-induced activity of MRSA and MSSA.

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