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  • Title: Inhibitory effect of perindopril, a novel angiotensin-converting enzyme inhibitor, on neointima formation after balloon injury in rats and cholesterol-fed rabbits.
    Author: Shibutani T, Kanda A, Ishigai Y, Mori T, Chiba K, Tanaka M, Tachizawa H.
    Journal: J Cardiovasc Pharmacol; 1994 Sep; 24(3):509-16. PubMed ID: 7799645.
    Abstract:
    We investigated the effect of perindopril, a novel angiotensin-converting enzyme (ACE) inhibitor, on neointima formation in vessel walls after balloon injury in rats (carotid artery) and cholesterol-fed rabbits (thoracic aorta). Continuous treatment with perindopril significantly reduced neointima formation in both species, as compared with the control group: intima/media (I/M) ratio (rats -62%; p < 0.001; rabbits -25%, p < 0.05); neointima area (rats -65%, p < 0.01; rabbits -24%, p < 0.05). These changes involved reduction of intimal smooth muscle cells (SMC) in rats and of macrophages in rabbits. Furthermore, perindopril also significantly decreased ACE activity in both aortic tissue and serum [11.38 +/- 0.87 vs. 34.93 +/- 6.44 pmol His-Leu (HL)/mg/min (p < 0.01) and 2.79 +/- 0.28 vs. 38.50 +/- 5.41 pmol HL/mg/min (p < 0.001), respectively], aortic contraction evoked by angiotensin I (AI) and mean blood pressure (BP, 84.9 +/- 3.5 vs. 109.3 +/- 3.8 mm Hg, p < 0.001) as compared with control values. These results indicate that perindopril may reduce neointima formation by suppressing the aortic renin-angiotensin system (RAS). These findings indicate that perindopril may be capable of preventing restenotic lesions after angioplasty in humans [corrected].
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