Yasa, M.Kerry, Z.Reel, B.Anacak, G. YetikErtuna, E.Ozer, A.2019-10-272019-10-2720070300-0605https://doi.org/10.1177/147323000703500106https://hdl.handle.net/11454/40074Placing a silicone collar around the rabbit carotid artery induces intimal thickening, an early stage in atherosclerosis and restenosis. We investigated whether treatment with oral pranidipine, a new potent, long lasting dihydropyridine calcium channel blocker (CCB), inhibited collar-induced intimal thickening in addition to the changes in vascular reactivity usually observed in this model. Pranidipine treatment did not inhibit collar-induced intimal thickening. Placing the collar around the carotid artery resulted in the characteristic changes in vascular reactivity, such as increased sensitivity to 5-hydroxytryptamine. Treatment with N-omega-nitro-L-arginine (100 mu M) and pranidipine, however, did not affect collarinduced changes in vascular reactivity. From results of this and previous studies, we conclude that pranidipine does not prevent collar-induced intimal thickening or collar-induced changes in vascular reactivity. Not all CCBs prevent collarinduced intimal thickening, suggesting that the effects of these agents are not related to their chemical structure and/or their calcium channel-blocking actions.en10.1177/147323000703500106info:eu-repo/semantics/closedAccesspranidipinecalcium channel blockersatherosclerosisrabbit collar modelintimal thickeningArticle3515971WOS:00024533930000617408056N/AQ4