Experimental hypertension and other responses to 18-hydroxy- deoxycorticosterone treatment in the rat

C. E. Hall, C. E. Gomez-Sanchez, O. B. Holland, D. Nasseth

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Abstract

Young female unilaterally nephrectomized, salt-loaded, Sprague-Dawley rats were treated with 200 μg or 1 mg 18-hydroxy-deoxycorticosterone-21-acetate (18-OH-DOCA) in oil daily, and a group of kidney-intact animals on a normal salt intake was given 2 mg/day. The hormone was not found to increase saline consumption, increase urinary potassium or kallikrein excretion, or depress serum renin activity or potassium concentration. Slight hypertension did develop at 3 weeks in salt-loaded rats on the lowest dose, but this was neither increased by higher dosage or longer treatment, nor reflected by increased heart or kidney weight. The effect of 40-mg pellet implantation of DOCA and 18-OH-DOCA was then compared in unilaterally nephrectomized, salt-loaded, female Fischer 344 rats. The former caused increased saline consumption, hypertension, hypokalemia, and heart and kidney enlargement, whereas 18-OH-DOCA did not. Thus, the hypertensogenic potency of 18-OH-DOCA is, at best, a reflection of its known, very weak, mineralocorticoid activity.

Original languageEnglish (US)
Pages (from-to)133-140
Number of pages8
JournalEndocrinology
Volume103
Issue number1
StatePublished - 1978

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ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism

Cite this

Hall, C. E., Gomez-Sanchez, C. E., Holland, O. B., & Nasseth, D. (1978). Experimental hypertension and other responses to 18-hydroxy- deoxycorticosterone treatment in the rat. Endocrinology, 103(1), 133-140.