Hydrogel treatment for idiopathic osteoarthritis in a Dunkin Hartley Guinea pig model

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 osteoarth...

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Bibliographic Details
Published in:PloS one 2022-11, Vol.17 (11), p.e0278338-e0278338
Main Authors: Parola, Lauren R, Pinette, Megan P, Proffen, Benedikt L, Sant, Nicholas J, Karamchedu, N Padmini, Costa, Meggin Q, Molino, Janine, Fleming, Braden C, Murray, Martha M
Format: Article
Language:English
Subjects:
Animals
Arthritis
Automation
Biology and Life Sciences
Cartilage
Cartilage diseases
Drug therapy
Evaluation
Extracellular Matrix
Gait
Gait recognition
Guinea Pigs
Histology
Hydrogels
Injection
Injections, Intra-Articular
Knee
Laboratories
Lymph nodes
Lymphatic system
Medicine and Health Sciences
Osteoarthritis
Osteoarthritis - drug therapy
Research and Analysis Methods
Synovial Membrane
Synovium
Walkways
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Summary: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.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0278338