Key result
Transient neonatal high oxygen exposure significantly decreased the aorta elastin/collagen ratio and shifted the balance towards increased collagen deposition at 4 weeks of age, prior to the onset of elevated blood pressure.
Why the study?
Does transient neonatal high-oxygen exposure cause premature vascular remodeling in Sprague Dawley rat pups?
Does transient neonatal high-oxygen exposure cause premature vascular remodeling in Sprague Dawley rat pups?
p-value: p=<0.01
Transient neonatal high oxygen exposure in rats leads to early vascular wall alterations, including a decreased elastin/collagen ratio, which precede and may contribute to subsequent arterial rigidity and hypertension.
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Hypothesis-generating for neonatal hyperoxia as a vascular programming factor; leaves open human translation and clinical relevance.
Huyard et al. (2014) studied Neonatal high-oxygen exposure (animal model) (n=12). Transient high oxygen exposure vs. Room air was evaluated on Aorta elastin/collagen content ratio (p=<0.01). Transient neonatal high oxygen exposure significantly decreased the aorta elastin/collagen ratio and shifted the balance towards increased collagen deposition at 4 weeks of age, prior to the onset of elevated blood pressure.
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