Key result
Noradrenaline dose-response curves of aortic strips and portal veins showed no significant difference between spontaneously hypertensive and normotensive control rats.
Why the study?
Does vascular smooth muscle from spontaneously hypertensive rats display hypersensitivity to noradrenaline compared to normotensive control rats?
Population
Helical aortic strips and portal vein segments from spontaneously hypertensive rats and normotensive control…
Comparison
Graded doses of noradrenaline in an organ bath vs Tissues from normotensive control rats exposed…
Design
Preclinical
Authors
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Questions vascular hyperreactivity in SHR; leaves open neural or humoral mechanisms for in vivo hypertension research.
Does vascular smooth muscle from spontaneously hypertensive rats display hypersensitivity to noradrenaline compared to normotensive control rats?
p-value: p=NS
Vascular smooth muscle from spontaneously hypertensive rats does not exhibit increased sensitivity to noradrenaline in vitro, suggesting that enhanced flow resistance in vivo is likely due to structural changes such as an increased wall-to-lumen ratio.
Hallbäck et al. (1971) studied Spontaneous hypertension (animal model). Noradrenaline vs. Normotensive control rats was evaluated on Dose-response curves (per cent of maximal responses) (p=NS). Noradrenaline dose-response curves of aortic strips and portal veins showed no significant difference between spontaneously hypertensive and normotensive control rats.
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