Key result
Acute mental stress provoked no differences in cardiovascular responses between the Milan strain of spontaneously hypertensive rats and normotensive control rats, despite lower resting heart rate in MHS.
Why the study?
Does the Milan strain of spontaneously hypertensive rats differ from normotensive rats in cardiovascular responses to acute mental stress and baseline hemodynamics?
Population
Milan strain of spontaneously hypertensive rats (MHS) and normotensive control rats (NR)
Comparison
Acute mental "stress" and autonomic blockade vs Normotensive control rats (NR)
Design
Preclinical
Authors
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No differential stress reactivity in MHS rats; leaves open strain-specific mechanisms and cautions against clinical extrapolation.
Does the Milan strain of spontaneously hypertensive rats differ from normotensive rats in cardiovascular responses to acute mental stress and baseline hemodynamics?
The Milan strain of spontaneously hypertensive rats exhibits a distinct hemodynamic profile characterized by higher vagal tone and systolic hypertension of renal origin, differing from the Okamoto strain.
Hallbäck et al. (1977) studied Hypertension (animal model). Acute mental stress (noise, vibration) vs. Normotensive control rats (NR) was evaluated on Cardiovascular responses (blood pressure and heart rate). Acute mental stress provoked no differences in cardiovascular responses between the Milan strain of spontaneously hypertensive rats and normotensive control rats, despite lower resting heart rate in MHS.
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