PMID- 24168233 OWN - NLM STAT- MEDLINE DCOM- 20150824 LR - 20141217 IS - 1520-5762 (Electronic) IS - 0363-9045 (Linking) VI - 41 IP - 1 DP - 2015 Jan TI - In vitro evaluation of S-(+)-ibuprofen as drug candidate for intra-articular drug delivery system. PG - 85-94 LID - 10.3109/03639045.2013.850704 [doi] AB - Intra-articular drug delivery systems (DDSs) are envisaged as interesting alternative to locally release non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen to reduce pain in patients with osteoarthritis. The present study examines the efficacy of S-(+)-ibuprofen on cartilage degradation as drug candidate for DDS loading. Humeral cartilage and joint capsule explants were collected from healthy sheep shoulder joints and they were cultured in mono- or in co-culture for 13 days with LPS in combination with S-(+)-ibuprofen at 50 microM and 1 mM. S-(+)-ibuprofen (50 microM) blocked prostaglandins production in LPS-activated explants but did not reduce cartilage degradation. By contrast, 1 mM S-(+)-ibuprofen treatment of cartilage explants reduced nitric oxide synthesis by 51% (p = 0.0072), proteoglycans degradation by 35% (p = 0.0114) and expression of serum amyloid protein - the main protein induced upon LPS challenge - by 44% (p < 0.0001). On contrary, in presence of synovial membrane, the protective effects of S-(+)-ibuprofen on cartilage damages were significantly diminished. At 1mM, S-(+)-ibuprofen reduced the cell lysis during culture of cartilage and joint capsule either in mono- or in co-culture. This study performed on sheep explants shows that 1 mM S-(+)-ibuprofen inhibited cartilage degradation via a mechanism independent of cyclooxygenase inhibition. Reduction of prostaglandins synthesis at 50 microM in all treatment groups and reduction of cartilage degradation observed at 1 mM suggest that S-(+)-ibuprofen could be considered as a promising drug candidate for the loading of intra-articular DDS. FAU - Bedouet, Laurent AU - Bedouet L AD - Occlugel SAS, Jouy-en-Josas , France . FAU - Pascale, Florentina AU - Pascale F FAU - Bonneau, Michel AU - Bonneau M FAU - Laurent, Alexandre AU - Laurent A LA - eng PT - Journal Article DEP - 20131030 PL - England TA - Drug Dev Ind Pharm JT - Drug development and industrial pharmacy JID - 7802620 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - WK2XYI10QM (Ibuprofen) SB - IM MH - Animals MH - Anti-Inflammatory Agents, Non-Steroidal/*administration & dosage/*chemistry/metabolism MH - Coculture Techniques/methods MH - Drug Delivery Systems/*methods MH - Drug Evaluation, Preclinical/methods MH - Ibuprofen/*administration & dosage/*chemistry/metabolism MH - Injections, Intra-Articular MH - Sheep MH - Synovial Membrane/drug effects/metabolism OTO - NOTNLM OT - Cartilage OT - S-(+)-ibuprofen OT - co-culture OT - drug delivery systems OT - osteoarthritis EDAT- 2013/10/31 06:00 MHDA- 2015/08/25 06:00 CRDT- 2013/10/31 06:00 PHST- 2013/10/31 06:00 [entrez] PHST- 2013/10/31 06:00 [pubmed] PHST- 2015/08/25 06:00 [medline] AID - 10.3109/03639045.2013.850704 [doi] PST - ppublish SO - Drug Dev Ind Pharm. 2015 Jan;41(1):85-94. doi: 10.3109/03639045.2013.850704. Epub 2013 Oct 30.