PROPRANOLOL INHIBITS THE INVITRO CONVERSION OF THYROXINE INTO TRIIODOTHYRONINE BY ISOLATED RAT-LIVER PARENCHYMAL-CELLS

被引:36
作者
VANNOORDEN, CJF [1 ]
WIERSINGA, WM [1 ]
TOUBER, JL [1 ]
机构
[1] UNIV AMSTERDAM,WILHELMINA GASTHUIS,DEPT MED,DIV ENDOCRINOL,AMSTERDAM,NETHERLANDS
关键词
D O I
10.1055/s-0028-1092740
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
A model for the in vitro study of the conversion of thyroxine into triiodothyronine using isolated rat liver parenchymal cells is described. Isolated liver cells (mean protein content 18 mg/ml convert approximately 0.8% of 1.3 μM exogenously added T4 into T3 during thirty minutes incubation. Carbimazole (50 μM) has no effect on the conversion process, whereas propylthiouracil (50 μM) inhibits the conversion. The β-adrenoceptor blocking agent propranolol lowers the conversion ratio when added in concentrations of 580 and 1160 μM, but has no inhibitory effect when 290 μM is added.
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页码:366 / 370
页数:5
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