{"title":"成年雄性大鼠体内类固醇循环模式III。全肠外营养对睾酮日变化的影响。","authors":"R J Keating, R K Tcholakian","doi":"10.1080/07435807909061098","DOIUrl":null,"url":null,"abstract":"<p><p>The in vivo pattern of circulating testosterone (T) during a 24 hr period was investigated in stock-fed and total parenterally nourished (TPN) rats. A diurnal rhythm of T was observed in control rats with highest concentrations occurring during the dark period. The loss of this rhythm in rats maintained on TPN shows that nutritional regimen affects circulating T and overrides the synchronizing effect of the light/dark cycle.</p>","PeriodicalId":75821,"journal":{"name":"Endocrine research communications","volume":"6 2","pages":"95-105"},"PeriodicalIF":0.0000,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/07435807909061098","citationCount":"2","resultStr":"{\"title\":\"In vivo patterns of circulating steroids in adult male rats III. Effect of total parenteral nutrition on the diurnal variation of testosterone.\",\"authors\":\"R J Keating, R K Tcholakian\",\"doi\":\"10.1080/07435807909061098\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The in vivo pattern of circulating testosterone (T) during a 24 hr period was investigated in stock-fed and total parenterally nourished (TPN) rats. A diurnal rhythm of T was observed in control rats with highest concentrations occurring during the dark period. The loss of this rhythm in rats maintained on TPN shows that nutritional regimen affects circulating T and overrides the synchronizing effect of the light/dark cycle.</p>\",\"PeriodicalId\":75821,\"journal\":{\"name\":\"Endocrine research communications\",\"volume\":\"6 2\",\"pages\":\"95-105\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1979-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1080/07435807909061098\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Endocrine research communications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/07435807909061098\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Endocrine research communications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/07435807909061098","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
In vivo patterns of circulating steroids in adult male rats III. Effect of total parenteral nutrition on the diurnal variation of testosterone.
The in vivo pattern of circulating testosterone (T) during a 24 hr period was investigated in stock-fed and total parenterally nourished (TPN) rats. A diurnal rhythm of T was observed in control rats with highest concentrations occurring during the dark period. The loss of this rhythm in rats maintained on TPN shows that nutritional regimen affects circulating T and overrides the synchronizing effect of the light/dark cycle.
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