The renin-angiotensin system and hypertension.
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Biomedical subjects
Publications and source records attributed to F Gross.
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1. The renin-like substance isolated from the placenta of the rabbit produces a prolonged increase of blood pressure in the nephrectomized rat. If incubated with renin substrate from ox serum, it forms a pressor substance that elevates blood pressure in exactly the same way as does angiotensin. 2. This angiotensin-like principle was concentrated by means of ion-exchange chromatography and compared with Val-5-angiotensins I and II in two paper-chromatography systems and in paper electrophoresis. 3. In all the three methods the unknown principle behaved like a mixture of the two reference compounds. 4. It is concluded that incubation of the renin-like substance of placental origin with substrate from ox serum gave a mixture of Val-5-angiotensins I and II. This is evidence that the enzyme isolated from the placenta is either closely related to, or identical with, renin.