학술논문
Anti-ischemic Effect of Polygala Tenuifolia in Isolated Rat Heart
이용수 3
- 영문명
- Anti-ischemic Effect of Polygala Tenuifolia in Isolated Rat Heart
- 발행기관
- 대한생리학회-대한약리학회
- 저자명
- Chang-Won Kang Jong-Hoon Kim
- 간행물 정보
- 『The Korean Journal of Physiology & Pharmacology』제11권 제3호, 89~95쪽, 전체 7쪽
- 주제분류
- 의약학 > 의학일반
- 파일형태
- 발행일자
- 2007.01.01
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국문 초록
영문 초록
Polygala tenuifolia (PT) is one of the most well-known traditional herbal medicines in Korea which is commonly used for the treatment of cardiovascular symptoms. The anti-ischemic effects of PT in isolated rat heart was investigated by analyzing changes in blood pressure, aortic flow, coronary flow, and cardiac output. And, its underlying mechanism was examined by quantitating intracellular calcium content in rat neonatal cardiomyocytes. Rats were divided into two groups: an ischemia-induced group without any treatment, and an ischemia-induced group treated with PT. Ischemia of isolated heart was induced by stopping the supply of oxygen and buffer for 10 min. The isolated heart was exposed to PT for the first 5 min of 10 min ischemia. PT treatment significantly prevented the decreases of perfusion pressure, aortic flow, coronary flow, and cardiac output under ischemic conditions. In addition, hemodynamics (except heart rate) of the PT-treated group was significantly recovered 60 min after reperfusion compared to the control group (systolic aortic pressure: 83.3% vs. 64.9%, aortic flow volume: 69.5% vs. 48.7%, coronary flow volume: 77.7% vs. 58.4%, and cardiac output: 71.6% vs. 51.2%, p<0.01). As for the underlying mechanism, PT significantly prevented intracellular calcium increase which was induced by isoproterenol (p<0.01), suggesting that the anti-ischemic effect of PT is mediated by inhibition of intracellular calcium increase.
목차
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