Key result
Removing the adventitia from ovine femoral arteries in vivo significantly increased arterial stiffness (β-index increased by 63.4%, p=0.007) and decreased conduit function by 27.0% (p=0.016).
Why the study?
Does removing the adventitia alter the mechanical properties and conduit function of ovine femoral arteries in vivo and in vitro?
Does removing the adventitia alter the mechanical properties and conduit function of ovine femoral arteries in vivo and in vitro?
Effect estimate: 63.4% increase
Absolute Event Rate: 7.5% vs 4.59%
p-value: p=0.007
Removing the adventitia alters arterial stiffness and conduit function in vivo but not in vitro, highlighting the role of smooth muscle tone and adventitial interactions in muscular arteries.
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Adventitial modulation of stiffness warrants further mechanistic study in muscular arteries; leaves open translation to human vascular interventions.
Fischer et al. (2010) studied Healthy (animal model) (n=14). Adventitia removal vs. Intact artery (baseline) was evaluated on Arterial stiffness (β-index) at 10 minutes (early) post-removal in vivo (63.4% increase, p=0.007). Removing the adventitia from ovine femoral arteries in vivo significantly increased arterial stiffness (β-index increased by 63.4%, p=0.007) and decreased conduit function by 27.0% (p=0.016).
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