Basic Research
Anti-spastic effect of benidipine in human internal mammary artery
Hou Haitao, Wang Jun, Wang Zhengqing, Gao Weizhen, He Guowei
Published 2018-11-25
Cite as Chin J Thorac Cardiovasc Surg, 2018,34(11): 694-696. DOI: 10.3760/cma.j.issn.1001-4497.2018.11.013
Abstract
ObjectiveTo investigate the antagonism of third generation dihydropyridine calcium channel antagonist benidipine in contraction induced by potassium chloride(KCl) in human internal mammary artery(IMA), and in order to explore the possibility of using benidipine as an antispastic agent during coronary artery bypass grafting(CABG).
MethodsThe IMAs were taken from 19 patients undergoing CABG. The vasodilator effect(n=7) on KCl-induced contraction and the inhibition effect(n=6) after incubation with benidipine were studied in a myograph. The caveolin 1.2 was detected(n=3, 2 cases respectively) by enzyme-linked immunosorbent assay(ELISA).
ResultsThe maximum relaxation caused benidipine was(87.7±4.9)%. Incubation with benidipine significantly depressed the contraction by KCl[from(16.9±4.4) mN to(9.1±3.4 )mN, P<0.01]. The concentration of caveolin 1.2 was down-regulated after incubation with benidipine(P<0.05).
ConclusionBenidipine has a potent inhibitory effect on KCl-induced vasoconstriction. The relaxation may be related with the expression of caveolin 1.2. Using benidipine in patients undergoing CABG may provide antispastic effects in grafts.
Key words:
Benidipine; Coronary artery bypass grafting; Calcium channel blockers; Grafts spasm
Contributor Information
Hou Haitao
Clinic for Cardiovascular Diseases, Tianjin Medical University, Basic Medical Research Center of TEDA International Cardiovascular Hospital, Tianjin 300457, China
Wang Jun
Clinic for Cardiovascular Diseases, Tianjin Medical University, Basic Medical Research Center of TEDA International Cardiovascular Hospital, Tianjin 300457, China
Wang Zhengqing
Clinic for Cardiovascular Diseases, Tianjin Medical University, Basic Medical Research Center of TEDA International Cardiovascular Hospital, Tianjin 300457, China
Gao Weizhen
Department of Pharmacology, Tianjin Medical University, Tianjin 300070, China
He Guowei
Clinic for Cardiovascular Diseases, Tianjin Medical University, Basic Medical Research Center of TEDA International Cardiovascular Hospital, Tianjin 300457, China