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1979•European Journal of EndocrinologyRequires access

PITUITARY-THYROID FUNCTION IN SPIRONOLACTONE TREATED HYPERTENSIVE WOMEN

A. G. H. Smals, P. W. C. Kloppenborg, W.H.L. Hoefnagels, J. I. M. Drayer

Open publisher page 9 citations

Abstract

Four weeks high dose spironolactone treatment (Aldactone Searle, 100 mg q. i. d.) significantly enhanced the TSH (delta max. 8.5 +/- 4.1 vs. 4.6 +/- 3.1 microunits/ml, P less than 0.05) and T3 (delta max. 32 +/- 27 vs. 11 +/- 16 ng/100 ml, P less than 0.05) responses to an intravenous TRH/LH-RH bolus injection in 6 eumenorrhoeic euthyroid hypertensive women, without affecting basal serum TSH, T3 or T4 levels or the basal and stimulated LH, FSH and prolactin values (P greater than 0.10). The mean serum testosterone, 17-hydroxyprogesterone and oestradiol levels were also similar before and during therapy. Spironolactone, possibly by virtue of its antiandrogenic action, may exert its enhancing effect on pituitary-thyroid function by modulating the levels of receptors for TRH in the thyrotrophs or by altering the T3 receptor in the pituitary permitting a greater response to TRH.

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What this paper is about

Four weeks high dose spironolactone treatment (Aldactone Searle, 100 mg q. i. d.) significantly enhanced the TSH (delta max. 8.5 +/- 4.1 vs. 4.6 +/- 3.1 microunits/ml, P less than 0.05) and T3 (delta max. 32 +/- 27 vs. 11 +/- 16 ng/100 ml, P less than 0.05) responses to an intravenous TRH/LH-RH bolus injection in 6 eumenorrhoeic euthyroid hypertensive women, without affecting basal serum TSH, T3 or T4 levels or the basal and stimulated LH, FSH and prolactin values (P greater than 0.10). The mean serum testosterone, 17-hydroxyprogesterone and oestradiol levels were also similar before and during therapy. Spironolactone, possibly by virtue of its antiandrogenic action, may exert its enhancing effect on pituitary-thyroid function by modulating the levels of receptors for TRH in the thyrotrophs or by altering the T3 receptor in the pituitary permitting a greater response to TRH.

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Available abstract

Four weeks high dose spironolactone treatment (Aldactone Searle, 100 mg q. i. d.) significantly enhanced the TSH (delta max. 8.5 +/- 4.1 vs. 4.6 +/- 3.1 microunits/ml, P less than 0.05) and T3 (delta max. 32 +/- 27 vs. 11 +/- 16 ng/100 ml, P less than 0.05) responses to an intravenous TRH/LH-RH bolus injection in 6 eumenorrhoeic euthyroid hypertensive women, without affecting basal serum TSH, T3 or T4 levels or the basal and stimulated LH, FSH and prolactin values (P greater than 0.10). The mean serum testosterone, 17-hydroxyprogesterone and oestradiol levels were also similar before and during therapy. Spironolactone, possibly by virtue of its antiandrogenic action, may exert its enhancing effect on pituitary-thyroid function by modulating the levels of receptors for TRH in the thyrotrophs or by altering the T3 receptor in the pituitary permitting a greater response to TRH.

Key concepts: Internal medicine, Endocrinology, Spironolactone, Thyrotropic cell, Euthyroid, Medicine, Prolactin, Basal (medicine)

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