{"title":"大鼠肝脏细胞色素p -450依赖性单加氧酶系统的昼夜变化。","authors":"A Plewka, P Czekaj, M Kamiński, D Plewka","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>Circadian changes in cytochrome P-450 and cytochrome b5 content and activity of NADPH-cytochrome P-450 and NADH-cytochrome b5 reductases have been studied in rat liver microsomes in season autumn. The obtained results indicate, that cytochrome P-450 in 6-month-old animals shows 12 h rhythm, but in older ones 24 h rhythm. NADPH-cytochrome P-450 reductase activity shows 24 h rhythm in oldest animals only. Cytochrome b5 and its reductase has 24 h rhythm in all examined groups of rats.</p>","PeriodicalId":20276,"journal":{"name":"Polish journal of pharmacology and pharmacy","volume":"44 6","pages":"655-61"},"PeriodicalIF":0.0000,"publicationDate":"1992-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Circadian changes of cytochrome P-450-dependent monooxygenase system in the rat liver.\",\"authors\":\"A Plewka, P Czekaj, M Kamiński, D Plewka\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Circadian changes in cytochrome P-450 and cytochrome b5 content and activity of NADPH-cytochrome P-450 and NADH-cytochrome b5 reductases have been studied in rat liver microsomes in season autumn. The obtained results indicate, that cytochrome P-450 in 6-month-old animals shows 12 h rhythm, but in older ones 24 h rhythm. NADPH-cytochrome P-450 reductase activity shows 24 h rhythm in oldest animals only. Cytochrome b5 and its reductase has 24 h rhythm in all examined groups of rats.</p>\",\"PeriodicalId\":20276,\"journal\":{\"name\":\"Polish journal of pharmacology and pharmacy\",\"volume\":\"44 6\",\"pages\":\"655-61\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1992-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Polish journal of pharmacology and pharmacy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polish journal of pharmacology and pharmacy","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Circadian changes of cytochrome P-450-dependent monooxygenase system in the rat liver.
Circadian changes in cytochrome P-450 and cytochrome b5 content and activity of NADPH-cytochrome P-450 and NADH-cytochrome b5 reductases have been studied in rat liver microsomes in season autumn. The obtained results indicate, that cytochrome P-450 in 6-month-old animals shows 12 h rhythm, but in older ones 24 h rhythm. NADPH-cytochrome P-450 reductase activity shows 24 h rhythm in oldest animals only. Cytochrome b5 and its reductase has 24 h rhythm in all examined groups of rats.
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