Key result
Spontaneously hypertensive rats exhibited enhanced vascular responses to intra-arterial vasoconstrictors but no difference in resting central sympathetic nerve discharge compared to normotensive rats.
Population
Okamoto spontaneously hypertensive rats and normotensive Wistar rats
Comparison
Neurogenic and humoral interventions including… vs Normotensive Wistar rats
Design
Preclinical
Authors
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May implicate vascular reactivity over central sympathetic drive in this model; leaves open relevance to human hypertension.
Hypertension in spontaneously hypertensive rats is likely driven by increased vascular reactivity to humoral factors or structural changes rather than enhanced central sympathetic discharge.
Lais et al. (1974) studied Hypertension. Spontaneous hypertension vs. Normotensive Wistar rats was evaluated on Vasoconstrictor responses and central sympathetic electrical discharge. Spontaneously hypertensive rats exhibited enhanced vascular responses to intra-arterial vasoconstrictors but no difference in resting central sympathetic nerve discharge compared to normotensive rats.
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