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Parola LR, Pinette MP, Proffen BL, Sant NJ, Karamchedu NP, Costa MQ, Molino J, Fleming BC, Murray MM. Hydrogel treatment for idiopathic osteoarthritis in a Dunkin Hartley Guinea pig model. PLoS One 2022; 17:e0278338. [PMID: 36449506 PMCID: PMC9710799 DOI: 10.1371/journal.pone.0278338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 10/13/2022] [Indexed: 12/02/2022] Open
Abstract
The study objective was to determine if intraarticular injections of an extracellular matrix (ECM) powder and blood composite (ECM-B) would have a significant impact on post-operative gait parameters without eliciting adverse cartilage changes or severe lymphatic reactions in an idiopathic osteoarthritis (OA) model. Twenty-one Dunkin Hartley Guinea pigs received an intraarticular injection of ECM-B in each knee and were split into sub-groups for gait assessment and post-harvest knee evaluations at 1 week (n = 5), 2 weeks (n = 5), 4 weeks (n = 5), or 8 weeks (n = 6). The results were compared with a control group (n = 5), which underwent bilateral injections of phosphate-buffered saline (PBS), gait measurements at 1, 2, 4, and 8 weeks, and post-mortem knee evaluation at 8 weeks post-injection. Hind limbs and popliteal lymph nodes were collected at the Week 8 endpoint and underwent histological analysis by a veterinary pathologist. Significant improvement in hind limb base of support was observed in the ECM-B group compared to the control group at Week 4 but was no longer significant by Week 8. No significant differences were observed between control and ECM-B groups in hind limb cartilage, synovium, or popliteal lymph node histology at Week 8. In conclusion, administration of an ECM-B material may improve gait for a limited time without significant adverse effects on the cartilage, synovium, or local lymph nodes.
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Affiliation(s)
- Lauren R. Parola
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/ Rhode Island Hospital, Providence, RI, United States of America
| | - Megan P. Pinette
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/ Rhode Island Hospital, Providence, RI, United States of America
| | - Benedikt L. Proffen
- Department of Orthopaedic Surgery, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Nicholas J. Sant
- Department of Orthopaedic Surgery, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States of America
| | - N. Padmini Karamchedu
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/ Rhode Island Hospital, Providence, RI, United States of America
| | - Meggin Q. Costa
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/ Rhode Island Hospital, Providence, RI, United States of America
| | - Janine Molino
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/ Rhode Island Hospital, Providence, RI, United States of America
| | - Braden C. Fleming
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/ Rhode Island Hospital, Providence, RI, United States of America
- * E-mail:
| | - Martha M. Murray
- Department of Orthopaedic Surgery, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States of America
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