Effects of non-steroidal anti-inflammatory drugs on proliferation, differentiation and migration in equine mesenchymal stem cells.

This research explored the impact of non-steroidal anti-inflammatory drugs (NSAIDs) on the growth, differentiation, and migration of equine mesenchymal stem cells (MSCs) in relation to stem cell therapy for orthopaedic diseases in horses.

Objective and Context

• The research specifically looked at the effects of NSAIDs, particularly phenylbutazone, meloxicam, celecoxib and flunixin, on equine MSCs. These drugs are often applied in tandem with stem cell therapies in equine medicine, particularly in the treatment of orthopedic diseases.
• The context for the study is the necessity to understand the influence of these NSAIDs on the viability and proliferation of MSCs, both in terms of in vitro and grafting in vivo applications.

Methods

• The researchers examined the impact of different concentrations of NSAIDs on cell viability and proliferation.
• Equipotential multidirectional differentiation and cell migration were also tested. Differentiation refers to the process by which an unspecialized cell becomes specialized into one of the many cell types that make up the body.
• The study used different concentrations of NSAIDs, ranging from low (0.1-1 μM for celecoxib and meloxicam, and 10-50 μM for flunixin), to higher concentrations (10-200 μM for celecoxib and meloxicam, and 100-1000 μM for flunixin and phenylbutazone).

Findings

• Lower concentrations of NSAIDs were found to have a positive influence on the proliferation and migration of MSCs, while higher concentrations resulted in negative effects.
• Adipogenic and chondrogenic MSC differentiations were not notably affected by these NSAIDs, regardless of the concentrations used. Adipogenic relates to the formation of fat cells, while chondrogenic pertains to the formation of cartilage.
• The osteogenic differentiation of MSCs (the process that leads to the formation of bone cells), however, was significantly disrupted, as demonstrated through von Kossa staining. This suggests that the application of NSAIDs, particularly at certain concentrations, could have potential implications for bone formation in stem cell therapy.

Conclusion

• The research concluded that the effects of NSAIDs on MSCs are mainly dependent on the concentrations used.
• Furthermore, the choice of NSAID is deemed critical for specific differentiation lineages, highlighting the need for careful selection and dosage of these drugs in the context of stem cell therapies in equine medicine.