The use of equine chondrogenic-induced mesenchymal stem cells as a treatment for osteoarthritis: A randomised, double-blinded, placebo-controlled proof-of-concept study.
Abstract: There is a need to improve therapies for osteoarthritis in horses. Objective: To assess the efficacy of equine allogeneic chondrogenic-induced mesenchymal stem cells combined with equine allogeneic plasma as a novel therapy for osteoarthritis in horses. Methods: Randomised, double-blinded, placebo-controlled experiment. Methods: In 12 healthy horses, osteoarthritis was induced in the metacarpophalangeal joint using an osteochondral fragment-groove model. Five weeks after surgery, horses were randomly assigned to either an intra-articular injection with chondrogenic-induced mesenchymal stem cells + equine allogeneic plasma (= intervention) or with 0.9% saline solution (= control). From surgery until the study end, horses underwent a weekly joint and lameness assessment. Synovial fluid was collected for cytology and biomarker analysis before surgery and at Weeks 5, 5 + 1d, 7, 9 and 11. At Week 11, horses were subjected to euthanasia, and the metacarpophalangeal joints were evaluated macroscopically and histologically. Results: No serious adverse events or suspected adverse drug reactions occurred during the study. A significant improvement in visual and objective lameness was seen with the intervention compared with the control. Synovial fluid displayed a significantly higher viscosity and a significantly lower glycosaminoglycan concentration in the intervention group. Other biomarkers or cytology parameters were not significantly different between the treatment groups. Significantly less wear lines and synovial hyperaemia were present in the intervention group. The amount of cartilage oligomeric matrix protein, collagen type II and glycosaminoglycans were significantly higher in the articular cartilage of the intervention group. Conclusions: This study assessed the short-term effect of the intervention on a limited number of horses, using an osteoarthritis model. This study also included multiple statistical tests, increasing the risk of type 1 error. Conclusions: Equine allogeneic chondrogenic-induced mesenchymal stem cells combined with equine allogeneic plasma may be a promising treatment for osteoarthritis in horses. The Summary is available in Spanish - see Supporting Information.
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This study focuses on using mesenchymal stem cells sourced from horses, genetically modified to lead to cartilage formation, and then mixed with horse blood plasma as a potential treatment for osteoarthritis in horses.
Study Objective and Methodology
The researchers were keen on evaluating the effectiveness of a proposed therapy for osteoarthritis in horses, this therapy involved the use of genetically enhanced mesenchymal stem cells tied with equine blood plasma.
A total of 12 healthy horses were used in this randomized, double-blinded, placebo-controlled study. Healthy horses were inflicted with osteoarthritis in one specific joint. A solution composed of the modified stem cells and horse blood plasma was injected into the horses five weeks later. As a control, some of the horses were injected with a saline solution instead.
Throughout the course of the study, the researchers conducted weekly joint and lameness assessments. They also collected synovial fluid – the lubricating fluid in the joints – for further analysis.
Results and Observations
No severe adverse events or suspected negative drug reactions were witnessed throughout the duration of the study.
The horses who were treated with the experimental therapy showed significant improvement in their lameness compared to horses in the control group. The synovial fluid derived from the treatment group had a higher viscosity and a significantly lower concentration of glycosaminoglycan – a compound known to cause pain and inflammation when present in excessive amounts.
The treated horses exhibited fewer signs of joint wear and inflammation compared to the control group. Additionally, the treated horses had significantly higher levels of proteins and compounds necessary for maintaining healthy joint cartilage.
Limits and Conclusions
The researchers acknowledge that their study had a limited scope, treating only a limited number of horses and assessing the short-term effects of the treatment.
Despite its limitations, this study suggests that the combination of equine allogeneic chondrogenic-induced mesenchymal stem cells and equine allogeneic plasma may be a promising treatment for osteoarthritis in horses.
Cite This Article
APA
Broeckx SY, Martens AM, Bertone AL, Van Brantegem L, Duchateau L, Van Hecke L, Dumoulin M, Oosterlinck M, Chiers K, Hussein H, Pille F, Spaas JH.
(2019).
The use of equine chondrogenic-induced mesenchymal stem cells as a treatment for osteoarthritis: A randomised, double-blinded, placebo-controlled proof-of-concept study.
Equine Vet J, 51(6), 787-794.
https://doi.org/10.1111/evj.13089
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