{"title":"Evaluation of thyroid gland activity by hormone assays and flow cytometry in rats.","authors":"G Zbinden","doi":"10.1159/000163480","DOIUrl":null,"url":null,"abstract":"<p><p>Spontaneous variations in the activity of thyroids and changes induced by methimazole, phenobarbital and 2,4--diaminoanisole sulfate were assessed in rats by repeated measurements of serum T3, T4 and TSH concentrations and cell cycle analysis in isolated nuclei of the thyroids. Methimazole caused a decrease in T3 and T4, and elevation in TSH, reduction of cells in G1 and increase in the percentage of cells in S and G2 phases. With phenobarbital T4 concentrations were decreased, but a mitogenic effect was only seen after 8 weeks. With 2,4-diaminoanisole sulfate the most prominent change observed was a decrease in T3 concentrations.</p>","PeriodicalId":75839,"journal":{"name":"Experimental cell biology","volume":"56 4","pages":"196-200"},"PeriodicalIF":0.0000,"publicationDate":"1988-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1159/000163480","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Experimental cell biology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1159/000163480","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Spontaneous variations in the activity of thyroids and changes induced by methimazole, phenobarbital and 2,4--diaminoanisole sulfate were assessed in rats by repeated measurements of serum T3, T4 and TSH concentrations and cell cycle analysis in isolated nuclei of the thyroids. Methimazole caused a decrease in T3 and T4, and elevation in TSH, reduction of cells in G1 and increase in the percentage of cells in S and G2 phases. With phenobarbital T4 concentrations were decreased, but a mitogenic effect was only seen after 8 weeks. With 2,4-diaminoanisole sulfate the most prominent change observed was a decrease in T3 concentrations.
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