Why the study?
Does acute mental stress elicit different cardiovascular responses in spontaneously hypertensive rats compared to normotensive and renal hypertensive rats?
Population
Spontaneously hypertensive rats aged 7 months or 10-11 weeks, renal hypertensive rats, and normotensive rats
Comparison
Acute mental 'stress' provoked by alerting stimuli vs Normotensive rats and renal hypertensive rats
Design
Preclinical
Key result
Spontaneously hypertensive rats exhibited stronger cardiovascular responses to mental stress than normotensive rats, with vagal bradycardia responses in 5% versus 30% in normotensive rats.
Authors
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SHR hyperreactivity to mental stress does not inform human care; leaves open genetic sympathotonic roles in hypertension pathogenesis.
Does acute mental stress elicit different cardiovascular responses in spontaneously hypertensive rats compared to normotensive and renal hypertensive rats?
Spontaneously hypertensive rats exhibit a genetically linked hyperreactivity to mental stress, suggesting a role for sympathotonic patterns in triggering structural vascular adaptation and manifest hypertension.
Hallbäck et al. (1974) studied Hypertension. Mental 'stress' (alerting stimuli) vs. Normotensive rats (NCR) and Renal hypertensive rats (RHR) was evaluated on Cardiovascular responses (blood pressure and heart rate) to mental stress. Spontaneously hypertensive rats exhibited stronger cardiovascular responses to mental stress than normotensive rats, with vagal bradycardia responses in 5% versus 30% in normotensive rats.