Volume 37, Issue 1 pp. 125-136
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The Effects of Orally Administered Calcium Pentosan Polysulfate on Inflammation and Cartilage Degradation Produced in Rabbit Joints by Intraarticular Injection of a Hyaluronate—Polylysine Complex

Margaret M. Smith PhD

Margaret M. Smith PhD

Raymond Purves Bone and Joint Research Laboratories (University of Sydney) at the Royal North Shore Hospital, Sydney, Australia.

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Peter Ghosh PhD, FRSC, FRACI

Corresponding Author

Peter Ghosh PhD, FRSC, FRACI

Raymond Purves Bone and Joint Research Laboratories (University of Sydney) at the Royal North Shore Hospital, Sydney, Australia.

Raymond Purves Bone and Joint Research Laboratories, Royal North Shore Hospital of Sydney, St. Leonards, NSW 2065, AustraliaSearch for more papers by this author
Yukiko Numata PhD

Yukiko Numata PhD

Raymond Purves Bone and Joint Research Laboratories (University of Sydney) at the Royal North Shore Hospital, Sydney, Australia.

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Mohinder K. Bansal PhD

Mohinder K. Bansal PhD

Raymond Purves Bone and Joint Research Laboratories (University of Sydney) at the Royal North Shore Hospital, Sydney, Australia.

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First published: January 1994
Citations: 46

Abstract

Objective. To determine the antiinflammatory and cartilage-protecting activities of orally administered calcium pentosan polysulfate (CaPPS) in a rabbit model of inflammatory arthritis.

Methods. A single intraarticular injection of a preformed polycation complex (PC) of poly-D-lysine and hyaluronan was used to induce joint inflammation; saline was injected into the contralateral joint as a control. Animals were killed 1, 4, 7, or 10 days post—PC injection. CaPPS, at 5 mg/kg, 10 mg/kg, or 75 mg/kg, was given every 48 hours commencing 7 days prior to PC injection. Serum interleukin-6 (IL-6), synovial fluid (SF) prostaglandin E2, cell numbers, and cartilage proteoglycan (PG) content, composition, and biosynthesis were determined for PC- and saline-injected joints.

Results. In PC-injected, non—drug-treated animals, serum IL-6 activity, SF leukocyte numbers, and prostaglandin E2 levels were elevated, while cartilage PG content and biosynthesis were reduced. CaPPS at 10 mg/kg, but not at 5 mg/kg, decreased serum IL-6 levels but maintained cartilage PG concentration and biosynthesis. However, SF leukocyte counts and prostaglandin E2 levels (except on day 1) were not reduced.

Conclusion. The ability of CaPPS to attenuate serum IL-6 levels and preserve cartilage PGs in inflamed rabbit joints suggests that this substance could be of value as an effective orally administered chondroprotective, antiarthritic drug.

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