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British Journal of Experimental Pathology logoLink to British Journal of Experimental Pathology
. 1989 Aug;70(4):425–433.

Studies on carrageenin air pouch inflammation in the rat.

P Hambleton 1, P Miller 1
PMCID: PMC2040562  PMID: 2765395

Abstract

Inflammation was induced in the 6-day subcutaneous air pouch of the rat by injection of carrageenin. The model was characterized in terms of exudate volume, leucocyte accumulation, granuloma, vascular permeability and protein clearance up to 7 days after injection of carrageenin. From days 2-3 rapid and reproducible changes in these responses were observed which indicated a change from polymorphonuclear (PMN) leucocyte-dominated to mononuclear (MN) leucocyte-dominated inflammation. A second injection of carrageenin on day 3 gave increases in exudate formation and PMN accumulation on day 4. Administration of carrageenin mixed with 3 day inflammatory exudate gave an increased exudate volume and decreased leucocyte accumulation at 6 h. Reduction of 6-h cellular accumulation by use of a lower dose of carrageenin or a I-day air pouch gave complete inhibition of exudate formation on day 3. In contrast, inhibition of the 6-h cell response with prednisolone had no effect on the 3-day response. Daily treatment with indomethacin gave increased PMN accumulation on day 3. Similar treatment with prednisolone additionally reduced exudate volume. Treatment on day 2 with prednisolone gave similar effects whereas indomethacin, BW755C and protease inhibitors had no effect. Administration of colchicine at this time gave inhibition of exudate volume on day 3 whereas complement depletion gave increases in volume and PMNs.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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