Abstract:
:Neuropeptide Y is released together with norepinephrine from sympathetic nerve terminals during conditions of increased sympathetic activity. Neuropeptide Y is known to inhibit vagal activity, and accordingly, it might increase the risk for ventricular fibrillation during myocardial ischemia-reperfusion, with concomitant sympathetic stimulation. Counteracting the inhibiting effect of neuropeptide Y by the specific neuropeptide Y2 antagonist, BIIE0246, we expected occurrence of ventricular fibrillation in association with repeated periods of myocardial ischemia-reperfusion to decrease. The midleft anterior descending coronary artery was repeatedly occluded in 16 open-chest pigs. Eight pigs received BIIE0246, and the controls received the vehicle only. Ventricular fibrillation developed in 2 animals of the control group, but in 4 pigs receiving BIIE0246. Occurrence of ventricular fibrillation and ventricular tachycardia did not differ significantly between the 2 groups, and in association with repeated periods of regional myocardial ischemia, did not decline in pigs treated by the specific neuropeptide Y2-receptor antagonist BIIE0246.
journal_name
J Cardiovasc Pharmacol Therjournal_title
Journal of cardiovascular pharmacology and therapeuticsauthors
Ilebekk A,Eriksen M,Sevre K,Aspelin T,Björkman JA,Lyberg T,Nordlander Mdoi
10.1177/1074248406292709subject
Has Abstractpub_date
2006-09-01 00:00:00pages
177-83issue
3eissn
1074-2484issn
1940-4034pii
11/3/177journal_volume
11pub_type
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