As Dahl-S rats with excess salt-loading during pregnancy exhibited pathological changes similar to those observed in female humans with pre-eclampsia/superimposed pre-eclampsia, this rat could be useful as an animal model of superimposed pre-eclampsia. In the placentas of hypertensive Dahl-S rats, vasodilatation seemed to be disturbed by the deregulation of both the NO-sGC-cGMP and NP-NPR-cGMP systems.
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