Randomized trial examines elastin's effect on tendon recovery after repetitive loading in mice, suggesting implications for tissue health.
Key Points
This research aims to investigate how fascicular elastin influences the recovery of tendon mechanical properties after repetitive loading below tissue failure.
Utilized wild-type and elastin knockdown mice to assess fatigue properties of tendons.
Conducted stress relaxation and ramp to failure tests after 50% cyclic fatigue loading.
Analyzed genotype-dependent differences in tendon mechanics and quantified damage metrics such as collagen denaturation.
Ultimate stress and linear modulus significantly decreased in elastin-deficient tendons following fatigue.
No differences in collagen denaturation and fiber kinking between wild-type and elastin knockdown tendons were observed post-fatigue.
Elastin was found to mediate collagen fiber alignment more in the Achilles tendon than in the tibialis anterior tendon.