Adrenal-regeneration hypertension in Wistar-Furth rats

The susceptibility of young virgin female Wistar-Furth (W/Fu) rats to adrenal-regeneration hypertension (ARH) was evaluated by comparing the blood pressure of adrenal-enucleated, mononephroadrenalectomized, salt-loaded rats with that of similarly treated rats having one intact adrenal over a period of 5 weeks. Hypertension began to appear in animals of the first group by the 3rd week, affected all of them by the 4th week, and increased in severity during the 5th week. Control rats remained normotensive during the study. Hypertensive rats developed marked enlargement of the heart and kidney, which frequently displaced myocardial scarring and nephrosclerosis, respectively. These studies do not support the contention that W/Fu rats display heightened resistance to ARH to which, in fact, they appear to be just as susceptible as are most other strains.