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Peptides for Tendon Injury Research: Peptide Type Comparison
Before selecting a peptide for tendon injury research, understanding how different peptide classes interact with distinct phases of tendon healing is critical. The table below compares primary peptide categories based on their mechanism of action, healing phas
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- Before selecting a peptide for tendon injury research, understanding how different peptide classes interact with distinct phases of tendon healing is critical. The table below compares primary peptide categories based on their mechanism of action, healing phase targeted, and research application.
- Growth Factor Mimetics (IGF-1 LR3, TB-500)
- Upregulate protein synthesis, inhibit apoptosis, promote cell migration
- Proliferation (days 7–21)
- Accelerating collagen deposition and tenocyte proliferation in early repair models
- Most effective for improving collagen content and fiber alignment when administered during the proliferative window
- Angiogenic Peptides (BPC-157)
- Stimulate VEGF and FGF-2 expression, promote endothelial cell migration
- Proliferation to Early Remodeling (days 7–42)
- Enhancing vascular ingrowth in hypovascular tissues like tendons and ligaments
- Critical for tendons with limited baseline vascularity. Achilles and supraspinatus injuries show strongest response
- Anti-inflammatory Modulators (Thymosin Alpha-1, KPV)
- Promote M2 macrophage polarization, inhibit NF-κB signaling
- Inflammation to Proliferation transition (days 3–14)
- Reducing chronic inflammation and accelerating transition to collagen synthesis
- Best used in early-phase protocols to prevent prolonged M1 macrophage activity that delays proliferation
- ECM Stabilizers (ARA-290)
- Reduce MMP expression, activate tissue-protective receptor signaling
- Remodeling (weeks 3–12)
- Preventing excessive ECM degradation during collagen maturation
- Effective in preventing re-injury during the return-to-activity window when newly synthesized collagen is still mechanically weak