Abstract
The number of β-adrenoceptors was measured in cardiac and renal cortex membranes from controls and thyroxine-treated rats. Two methods of membrane preparation (sucrose- and KCI-extraction) were compared. KCI-extraction yielded a higher number of β-adrenoceptors, accompanied by increased activity of the plasma membrane enzyme marker 5′-nucleotidase. Thyroxine increased the number of β-adrenoceptors in both cardiac and renal cortex membranes prepared with both methods. These results suggest that: i) Enrichment of the membrane fraction may explain the higher number of β-adrenoceptors found with KCI, ii) Thyroid hormone plays a role in the regulation of β-adrenoceptors in the renal cortex.
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Haro, J.M., Sabio, J.M. & Vargas, F. Renal β-adrenoceptors in thyroxine-treated rats. J Endocrinol Invest 15, 605–608 (1992). https://doi.org/10.1007/BF03344933
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DOI: https://doi.org/10.1007/BF03344933