Source comparison
TB-500 Studied Ligament Tear: Comparison of Research Models
Rat MCL tear (J Orthop Res 2019) n=24 per group, controlled injury, 4-week endpoint Type I collagen density, inflammatory markers, tensile strength 6mg/kg subcutaneous, twice weekly × 4 weeks +38% collagen density, +22% tensile strength, -47% inflammatory infi
This comparison does not assign a generated winner or score.
- Rat MCL tear (J Orthop Res 2019)
- n=24 per group, controlled injury, 4-week endpoint
- Type I collagen density, inflammatory markers, tensile strength
- 6mg/kg subcutaneous, twice weekly × 4 weeks
- +38% collagen density, +22% tensile strength, -47% inflammatory infiltrate
- Strongest mechanistic evidence but limited clinical translation due to species differences and short timeline
- Equine tendon injury (Equine Vet J 2018)
- n=42 naturally occurring injuries, 18-month follow-up
- Ultrasonographic fibre alignment, lesion size, return-to-performance
- 20mg intramuscular, twice weekly × 6 weeks
- +31% fibre alignment, -2.5 months return timeline
- Best functional outcome data but dosing/biomechanics don't translate directly to human ligament injuries
- Rat Achilles (NIH-funded 2017)
- n=18 per group, complete transection model, 6-week endpoint
- Vascular density (CD31 staining), collagen organisation
- 5mg/kg subcutaneous, daily × 2 weeks then twice weekly × 4 weeks
- +40% angiogenesis markers, improved collagen alignment scores
- Complete transection model doesn't match partial tear biomechanics; dosing frequency higher than other protocols
- In vitro human fibroblast (Connect Tissue Res 2020)
- Cell culture, mechanical strain applied
- Fibroblast migration rate, MMP expression, collagen gene expression
- 10–100ng/mL media concentration, 72-hour exposure
- Dose-dependent migration increase (peak at 50ng/mL), +60% COL1A1 expression
- Validates mechanism but lacks tissue complexity and immune response variables