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Liposomal clodronate eliminates synovial macrophages, reduces inflammation and ameliorates joint destruction in antigen-induced arthritis

Richards, Peter James, Williams, A. S., Goodfellow, Rhian Mair and Williams, Bryan Davies 1999. Liposomal clodronate eliminates synovial macrophages, reduces inflammation and ameliorates joint destruction in antigen-induced arthritis. Rheumatology 38 (9) , pp. 818-825. 10.1093/rheumatology/38.9.818

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Abstract

Objectives. To investigate the efficacy of a single i.v. dose of clodronate encapsulated within small unilamellar vesicles in suppressing joint inflammation and the histological progression of rat antigen-induced arthritis (AIA). Methods. Rats with AIA received a single i.v. injection of 20 mg of clodronate encapsulated within small unilamellar vesicles (SUVc) or larger multilamellar vesicles (MLVc) 7 days post-arthritis induction. Free clodronate or saline were used as negative controls. Results. SUVc was shown to be more effective than MLVc, sustaining a significant reduction in knee swelling for up to 7 days after the initial systemic administration. Knee swelling in free clodronate-treated animals was not significantly affected. The increased efficacy of SUVc in reducing inflammation and joint destruction was associated with a significant depletion of resident ED1+, ED2+ and ED3+ macrophages from the synovial membrane (SM). Conclusions. SUVc is more efficient than MLVc in reducing the severity of inflammation and joint destruction in rat AIA, and is associated with the specific elimination of macrophage subpopulations from the SM.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Medicine
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: Clodronate, Small unilamellar vesicles, Synovial macrophages Reticuloendothelial system.
Publisher: Oxford University Press
ISSN: 1460-2172
Last Modified: 10 Oct 2017 16:12
URI: http://orca.cf.ac.uk/id/eprint/69360

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