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Endocrinology, Vol 117, 2424-2427, Copyright © 1985 by Endocrine Society

ARTICLES

19-nor-deoxycorticosterone excretion in rats bred for susceptibility and resistance to the hypertensive effects of salt

SL Dale, MM Holbrook and JC Melby

Rats susceptible (S/JR) and resistance (R/JR) to the hypertensive effect of salt were weaned at 28 days of age and placed on a high salt intake. Blood pressure, measured at 4-5 and 8-9 weeks of age (after 5 weeks of high salt intake), demonstrated a slight increase in R/JR rats and a highly significant increase in S/JR rats. Urinary fee 19-nor- deoxycorticosterone (19-nor-DOC) levels measured in weekly urine collections were found to be markedly elevated in S/JR rats compared to levels in R/JR rats. Since 19-nor-DOC has been shown to be a potent mineralocorticoid, the results suggest that elevated production of 19- nor-DOC may have a role in hypertension in rats susceptible to the hypertensive effects of salt.




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Copyright © 1985 by The Endocrine Society