PMID- 24192391 OWN - NLM STAT- MEDLINE DCOM- 20141103 LR - 20220311 IS - 1552-3365 (Electronic) IS - 0363-5465 (Linking) VI - 42 IP - 1 DP - 2014 Jan TI - The anti-inflammatory and matrix restorative mechanisms of platelet-rich plasma in osteoarthritis. PG - 35-41 LID - 10.1177/0363546513507766 [doi] AB - BACKGROUND: Intra-articular (IA) treatment with platelet-rich plasma (PRP) for osteoarthritis (OA) results in improved patient-reported pain and function scores. PURPOSE: To measure the effects of PRP and high molecular weight hyaluronan (HA) on the expression of anabolic and catabolic genes and on the secretion of nociceptive and inflammatory mediators from OA cartilage and synoviocytes. STUDY DESIGN: Controlled laboratory study. METHODS: Synovium and cartilage harvested from patients undergoing total knee arthroplasty were co-cultured with media of PRP or HA. Tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), and IL-1beta were measured in the media by enzyme-linked immunosorbent assay. Hyaluronan synthase-2 (HAS-2), matrix metalloproteinase-1 (MMP-1), MMP-13, and TNF-alpha genes were measured in synoviocytes by reverse transcription polymerase chain reaction (RT-PCR). Collagen type I alpha1 (COL1A1), COL2A1, aggrecan (ACAN), and MMP-13 gene expression were measured in cartilage by quantitative RT-PCR. RESULTS: Media TNF-alpha concentration was decreased in PRP and HA compared with control cultures (PRP = 6.94 pg/mL, HA = 6.39 pg/mL, control = 9.70 pg/mL; P .05). CONCLUSION: Both PRP and HA treatments of OA joint tissues result in decreased catabolism, but PRP treatment also resulted in a significant reduction of MMP-13, an increase in HAS-2 expression in synoviocytes, and an increase in cartilage synthetic activity compared with HA. These results indicate that PRP acts to stimulate endogenous HA production and decrease cartilage catabolism. Platelet-rich plasma showed similar effects as HA in the suppression of inflammatory mediator concentration and expression of their genes in synoviocytes and cartilage. CLINICAL RELEVANCE: The antinociceptive and anti-inflammatory activities of PRP support its use in OA joints to reduce pain and modulate the disease process. This study supports further clinical investigations of IA PRP for the treatment of OA. FAU - Sundman, Emily A AU - Sundman EA AD - Lisa A. Fortier, DVM, Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, VMC C3-181, Ithaca, NY 14853. laf4@cornell.edu. FAU - Cole, Brian J AU - Cole BJ FAU - Karas, Vasili AU - Karas V FAU - Della Valle, Craig AU - Della Valle C FAU - Tetreault, Mathew W AU - Tetreault MW FAU - Mohammed, Hussni O AU - Mohammed HO FAU - Fortier, Lisa A AU - Fortier LA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131105 PL - United States TA - Am J Sports Med JT - The American journal of sports medicine JID - 7609541 RN - 0 (Aggrecans) RN - 0 (Anti-Inflammatory Agents) RN - 0 (Interleukin-1beta) RN - 0 (Interleukin-6) RN - 0 (Tumor Necrosis Factor-alpha) RN - 9004-61-9 (Hyaluronic Acid) RN - 9007-34-5 (Collagen) RN - EC 3.4.24.- (Matrix Metalloproteinase 13) RN - EC 3.4.24.7 (Matrix Metalloproteinase 1) SB - IM CIN - Am J Sports Med. 2014 Jun;42(6):NP30-1. PMID: 24879671 CIN - Am J Sports Med. 2014 Jun;42(6):NP31. PMID: 24879672 CIN - Am J Sports Med. 2014 Jun;42(6):NP32. PMID: 24879673 CIN - Am J Sports Med. 2014 Jun;42(6):NP32-3. PMID: 24879674 MH - Aged MH - Aggrecans/genetics MH - Anti-Inflammatory Agents/pharmacology MH - Cartilage, Articular/*metabolism MH - Coculture Techniques MH - Collagen/metabolism MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Gene Expression MH - Humans MH - Hyaluronic Acid/pharmacology MH - Interleukin-1beta/metabolism MH - Interleukin-6/metabolism MH - Male MH - Matrix Metalloproteinase 1/metabolism MH - Matrix Metalloproteinase 13/genetics/metabolism MH - Middle Aged MH - Osteoarthritis/metabolism/*therapy MH - *Platelet-Rich Plasma MH - Reverse Transcriptase Polymerase Chain Reaction MH - Synovial Membrane/*metabolism MH - Tumor Necrosis Factor-alpha/genetics/metabolism OTO - NOTNLM OT - articular cartilage OT - biology of cartilage OT - growth factors/healing enhancement OT - knee OT - platelet-rich plasma OT - regenerative medicine OT - synovium EDAT- 2013/11/07 06:00 MHDA- 2014/11/05 06:00 CRDT- 2013/11/07 06:00 PHST- 2013/11/07 06:00 [entrez] PHST- 2013/11/07 06:00 [pubmed] PHST- 2014/11/05 06:00 [medline] AID - 0363546513507766 [pii] AID - 10.1177/0363546513507766 [doi] PST - ppublish SO - Am J Sports Med. 2014 Jan;42(1):35-41. doi: 10.1177/0363546513507766. Epub 2013 Nov 5.