書誌事項
- タイトル別名
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- Limitation of experimental infarct size by levocarnitine chloride(LC-80), a new mitochondrial function-reactivating agent.
- ミトコンドリア キノウ フカツ サヨウ オ ユウスル エンカ レボカルニチン
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説明
The effect of LC-80 on infarct size induced by 6 hr coronary occlusion was studied in anesthetized dogs. LC-80 at a dose of 100 mg/kg, i.v. was injected 5 min after coronary occlusion and then infused at a rate of 50 mg/kg, i.v./hr until the heart was excised. The two risk areas were determined both by injecting a fluorescent dye (Thioflavin S) into the left atrium (in vivo) and by perfusing the non-occluded coronary bed with Monastral Blue (in vitro). The infarct size was determined by topographically tracing the area of myocardium unstained by triphenyltetrazolium chloride. Four zones such as Zone 1 (normal tissue), Zone 2 (tissue characterized by collateral blood flow), Zone 3a (tissue developing necrosis), Zone 3b (necrotic tissue) were delimitated. As a result, (1) LC-80 significantly diminished the incidence of ventricular arrhythmias. (2) LC-80 significantly inhibited the decrease in myocardial free carnitine level in Zone 2 and Zone 3b. (3) LC-80 significantly reduced the infarct size expressed as a percentage of the risk area and increased the size of Zone 2. (4) In the electron microscopic findings, LC-80 showed lesser morphological changes such as swollen mitochondria and intracellular and extracellular edema, especially in Zone 2. (5) LC-80 may be useful for inhibiting the evolution of myocardial ischemic cell death both by the protection of ischemic myocardium and presumably by the increase in the collateral blood flow.
収録刊行物
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- 日本薬理学雑誌
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日本薬理学雑誌 96 (5), 227-242, 1990
公益社団法人 日本薬理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204273594368
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- NII論文ID
- 130000758989
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- NII書誌ID
- AN00198335
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- ISSN
- 13478397
- 00155691
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- NDL書誌ID
- 3698018
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- PubMed
- 2279712
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDLサーチ
- Crossref
- PubMed
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- 抄録ライセンスフラグ
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