Why the study?
Does nitric oxide synthase inhibition modulate vagally induced bradycardia in anaesthetized ferrets?
Population
Anaesthetized ferrets
Comparison
L-NAME followed by L-arginine during right vagus… vs Baseline/control vagally induced heart rate…
Design
Preclinical
Key result
L-NAME significantly reduced bradycardia induced by vagal stimulation in anaesthetized ferrets, an effect reversed by L-arginine, suggesting nitric oxide modulates vagal heart rate control.
Authors
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Hypothesis-generating in ferrets; leaves open relevance to human vagal heart rate control and any therapeutic targeting.
Does nitric oxide synthase inhibition modulate vagally induced bradycardia in anaesthetized ferrets?
Nitric oxide appears to play a significant role in modulating the vagally mediated control of heart rate in an animal model.
Conlon et al. (1996) studied this question. L-NAME vs. Control levels (baseline) was evaluated on Bradycardia induced by vagal stimulation. L-NAME significantly reduced bradycardia induced by vagal stimulation in anaesthetized ferrets, an effect reversed by L-arginine, suggesting nitric oxide modulates vagal heart rate control.