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The effect of 5 alpha-dihydrocortisol on the blood pressure of rats treated with deoxycorticosterone acetate and salt.

Abstract
5 alpha-dihydrocortisol has been reported to amplify the mineralocorticoid activity of aldosterone. In this study 5 alpha-dihydrocortisol was administered to unilaterally nephrectomized rats treated with 11-deoxcorticosterone acetate (DOCA) and sodium chloride to examine its potentiating effect on the elevation of blood pressure in these animals. Subcutaneous administration of DOCA at two dose levels (40 microgram and 100 microgram/100 g of body weight 3 times a week) resulted in a significant rise in blood pressure when compared with controls given no DOCA. However, concomitaut injection of 5 alpha-dihydrocortisol (300 microgram/100 g of body weight 3 times a week) with both doses of DOCA did not accelerate the development or potentiate the severity of the hypertension in a 4 week period. Furthermore, administration of 5 alpha-dihydrocortisol did not cause a further decrease in plasma renin activity or a greater increase in urinary kallikrein excretion than those observed after DOCA alone. Thus, 5 alpha-dihydrocortisol does not potentiate DOCA in the production of low renin hypertension in unilaterally nephrectomized salt-loaded rats.
AuthorsH Mikami, C A Nugent, T Ogihara, T Naka, K Iwanaga, Y Kumahara
JournalEndocrinologia japonica (Endocrinol Jpn) Vol. 27 Issue 6 Pg. 769-73 (Dec 1980) ISSN: 0013-7219 [Print] JAPAN
PMID7021137 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Desoxycorticosterone
  • Sodium Chloride
  • 5-dihydrocortisol
  • Kallikreins
  • Renin
  • Hydrocortisone
Topics
  • Animals
  • Blood Pressure (drug effects)
  • Desoxycorticosterone (pharmacology)
  • Drug Interactions
  • Hematocrit
  • Hydrocortisone (analogs & derivatives, pharmacology)
  • Hypertension (chemically induced)
  • Kallikreins (urine)
  • Rats
  • Renin (blood)
  • Sodium Chloride (pharmacology)

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