Key result
Noradrenaline evoked a more prominent resistance increase in SHR compared with WKY under constant flow, whereas under constant pressure with normal solution, the response was more prominent in WKY.
Population
6- to 7-month-old spontaneously hypertensive and Wistar Kyoto rats
Comparison
Noradrenaline perfusion/superfusion under… vs Wistar Kyoto rats compared to spontaneously…
Design
Preclinical
Authors
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Hypothesis-generating for perfusion effects on vasoconstriction in hypertension models; leaves open human translation.
Differences in vasoconstrictor responses to noradrenaline between SHR and WKY rats depend on perfusion conditions (flow vs. pressure), likely due to structural differences such as wall thickness-to-lumen diameter ratio and myogenic responses.
Machkov et al. (1997) studied Hypertension. Noradrenaline vs. WKY rats (normotensive control) was evaluated on Vasoconstrictor effects (resistance increase). Noradrenaline evoked a more prominent resistance increase in SHR compared with WKY under constant flow, whereas under constant pressure with normal solution, the response was more prominent in WKY.
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