Effects of Rosuvastatin and Pitavastatin on Ischemia-Induced Myocardial Stunning in Dogs
Incomplete recovery of myocardial contraction after reperfusion following brief ischemia is called the “stunning phenomenon” in an animal experiment. A hydrophilic 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor (statin) does not affect this phenomenon, but lipophilic statins fur...
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doaj-a8646e886d044e688f37584bbe7f73f52020-11-24T22:01:17ZengElsevierJournal of Pharmacological Sciences1347-86132008-01-011064593599Effects of Rosuvastatin and Pitavastatin on Ischemia-Induced Myocardial Stunning in DogsKumi Satoh0Akira Takaguri1Mai Itagaki2Seiichiro Kano3Kazuo Ichihara4Division of Pharmacology, Hokkaido Pharmaceutical University, 7-1 Katsuraoka, Otaru 047-0264, JapanDivision of Pharmacology, Hokkaido Pharmaceutical University, 7-1 Katsuraoka, Otaru 047-0264, JapanDivision of Pharmacology, Hokkaido Pharmaceutical University, 7-1 Katsuraoka, Otaru 047-0264, JapanDivision of Pharmacology, Hokkaido Pharmaceutical University, 7-1 Katsuraoka, Otaru 047-0264, JapanDivision of Pharmacology, Hokkaido Pharmaceutical University, 7-1 Katsuraoka, Otaru 047-0264, Japan; Corresponding author. ichihara1@hokuyakudai.ac.jpIncomplete recovery of myocardial contraction after reperfusion following brief ischemia is called the “stunning phenomenon” in an animal experiment. A hydrophilic 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor (statin) does not affect this phenomenon, but lipophilic statins further reduce the contraction during reperfusion. The effects of novel hydrophilic rosuvastatin and lipophilic pitavastatin on myocardial stunning in dogs were examined. In a preliminary experiment in vitro, pitavastatin reduced L6 cell viability at 10−6M and higher, whereas rosuvastatin and pravastatin up to 10−5M did not show such effects. An empty capsule or a capsule filled with rosuvastatin (2 mg/kg per day) or pitavastatin (0.4 mg/kg per day) was orally administered to dogs. After 3 weeks, both statins lowered the serum cholesterol level to the same extent. Under pentobarbital anesthesia, dogs were subjected to 15-min ischemia followed by 120-min reperfusion. Ischemia arrested the myocardial contraction in the ischemic area, and reperfusion recovered it but incompletely, showing the stunning phenomenon. Rosuvastatin did not modify the stunning phenomenon, while pitavastatin further deteriorated the myocardial contraction during reperfusion. Keywords:: 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, heart, coronary artery, ischemia, ATPhttp://www.sciencedirect.com/science/article/pii/S1347861319314793 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kumi Satoh Akira Takaguri Mai Itagaki Seiichiro Kano Kazuo Ichihara |
spellingShingle |
Kumi Satoh Akira Takaguri Mai Itagaki Seiichiro Kano Kazuo Ichihara Effects of Rosuvastatin and Pitavastatin on Ischemia-Induced Myocardial Stunning in Dogs Journal of Pharmacological Sciences |
author_facet |
Kumi Satoh Akira Takaguri Mai Itagaki Seiichiro Kano Kazuo Ichihara |
author_sort |
Kumi Satoh |
title |
Effects of Rosuvastatin and Pitavastatin on Ischemia-Induced Myocardial Stunning in Dogs |
title_short |
Effects of Rosuvastatin and Pitavastatin on Ischemia-Induced Myocardial Stunning in Dogs |
title_full |
Effects of Rosuvastatin and Pitavastatin on Ischemia-Induced Myocardial Stunning in Dogs |
title_fullStr |
Effects of Rosuvastatin and Pitavastatin on Ischemia-Induced Myocardial Stunning in Dogs |
title_full_unstemmed |
Effects of Rosuvastatin and Pitavastatin on Ischemia-Induced Myocardial Stunning in Dogs |
title_sort |
effects of rosuvastatin and pitavastatin on ischemia-induced myocardial stunning in dogs |
publisher |
Elsevier |
series |
Journal of Pharmacological Sciences |
issn |
1347-8613 |
publishDate |
2008-01-01 |
description |
Incomplete recovery of myocardial contraction after reperfusion following brief ischemia is called the “stunning phenomenon” in an animal experiment. A hydrophilic 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor (statin) does not affect this phenomenon, but lipophilic statins further reduce the contraction during reperfusion. The effects of novel hydrophilic rosuvastatin and lipophilic pitavastatin on myocardial stunning in dogs were examined. In a preliminary experiment in vitro, pitavastatin reduced L6 cell viability at 10−6M and higher, whereas rosuvastatin and pravastatin up to 10−5M did not show such effects. An empty capsule or a capsule filled with rosuvastatin (2 mg/kg per day) or pitavastatin (0.4 mg/kg per day) was orally administered to dogs. After 3 weeks, both statins lowered the serum cholesterol level to the same extent. Under pentobarbital anesthesia, dogs were subjected to 15-min ischemia followed by 120-min reperfusion. Ischemia arrested the myocardial contraction in the ischemic area, and reperfusion recovered it but incompletely, showing the stunning phenomenon. Rosuvastatin did not modify the stunning phenomenon, while pitavastatin further deteriorated the myocardial contraction during reperfusion. Keywords:: 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, heart, coronary artery, ischemia, ATP |
url |
http://www.sciencedirect.com/science/article/pii/S1347861319314793 |
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