Transforming growth factor beta 1 preserves endothelial function after multiple brief coronary artery occlusions and reperfusion. Am Heart J 1994 Jun;127(6):1456-61
Date
06/01/1994Pubmed ID
8197968DOI
10.1016/0002-8703(94)90370-0Scopus ID
2-s2.0-0028244164 (requires institutional sign-in at Scopus site) 28 CitationsAbstract
The objective of this investigation was to determine the effect of transforming growth factor beta 1 (TGF-beta 1) on endothelium-dependent relaxation in isolated epicardial coronary artery rings obtained from anesthetized dogs after multiple brief episodes of coronary artery occlusion and reperfusion in vivo. Dogs were subjected to four 5-minute periods of left anterior descending coronary artery occlusion interspersed with 5 minutes of reperfusion and followed by a final 1-hour period of reperfusion. Normal left circumflex coronary arteries were used as control samples. Repetitive ischemia and reperfusion significantly (p < 0.01) inhibited the relaxation response to acetylcholine in rings preconstricted with potassium. In an additional group of dogs subjected to the same protocol, 10 micrograms of human recombinant TGF-beta 1 was infused into the left anterior descending coronary artery distal to the site of occlusion via a diagonal branch at 0.3 ml/min immediately before and during the repetitive occlusions and reperfusions. TGF-beta 1 prevented impaired endothelium-dependent relaxation after multiple brief occlusions and reperfusions. These results demonstrate a protective role for TGF-beta 1 in the endothelial injury that occurs during repeated episodes of coronary artery occlusion and reperfusion.
Author List
Kenny D, Coughlan MG, Pagel PS, Kampine JP, Warltier DCMESH terms used to index this publication - Major topics in bold
AcetylcholineAnimals
Coronary Circulation
Coronary Disease
Coronary Vessels
Dogs
Dose-Response Relationship, Drug
Endothelium, Vascular
Female
Male
Myocardial Reperfusion
Myocardial Stunning
Recombinant Proteins
Recurrence
Time Factors
Transforming Growth Factor beta
