Key result
Renal artery clipping in rats drives non-proportional medial thickening, indicating imperfect adaptation to elevated pressure.
Population
Rats with durable arterial hypertension induced by unilateral application of silver clips on renal arteries
Design
Preclinical
Follow-up
up to 20 weeks
Authors
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Imperfect medial adaptation in this rat hypertension model is hypothesis-generating; human studies needed to assess clinical relevance.
Effect estimate: Regression coefficient 0.75
In a rat model of hypertension, the adaptation of the arterial muscular coat to blood pressure elevation is imperfect, leading to a limit where equilibrium is disturbed and arteriolar injuries rapidly develop.
Shigeru OHYAMA (1963) studied Experimental hypertension (n=50). Unilateral renal artery clipping vs. Unsuccessful clipping (normotensive state) was evaluated on Medial thickness of renal artery (D) in relation to mean systolic blood pressure (P) (Regression coefficient 0.75). Unilateral renal artery clipping in rats induced experimental hypertension and resulted in a non-proportional increase in renal artery medial thickness (regression coefficient 0.75), indicating imperfect adaptation to elevated blood pressure.
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