Effects of captopril on ischaemia-reperfusion-induced arrhythmias in an in vivo rat model
Küçük Resim Yok
Tarih
1995
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Academic Press Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The antiarrhythmic effects of captopril, an angiotensin converting enzyme (ACE) inhibitor, were investigated in an in vivo rat model of coronary artery ligation. Captopril (0.3-3 mg kg(-1)) or saline were administered by intravenously 10 min before coronary ischaemia. The left main coronary artery was then occluded for 7 min, followed by 7 min of reperfusion. Captopril caused a marked decrease in mean arterial blood pressure which was transient at 0.3 and 1 mg kg(-1), and at doses of 1 and 3 mg kg(-1), it produced marked bradycardia. The incidence of ventricular tachycardia (VT) on ischaemia was significantly reduced the captopril at a dose of 3 mg kg(-1) only and on reperfusion at doses of 1 and 3 mg kg(-1). At the same doses, captopril significantly reduced the mean duration of ventricular fibrillation (VF) on reperfusion. The incidence of mortality resulting from reperfusion-induced irreversible VF in the control group decreased from 42.9% to 14.3% (NS), 21.4% (NS) and 7.7% (P<0.05) in captopril at 0.3, 1 and 3 mg kg(-1), respectively. Our results indicate that captopril appears to limit the arrhythmias following reperfusion and this may be due in part to the antiischemic effect associated with bradycardia and vasodepression. (C) 1995 The Italian Pharmacological Society
Açıklama
Anahtar Kelimeler
ACE inhibition, reperfusion arrhythmias, rat heart
Kaynak
Pharmacological Research
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
32
Sayı
1-2
