[The mechanisms of the development of arterial hypertension with a calcium deficiency in the diet].

The arterial pressure was significantly higher in the calcium-deficient group of rats as compared with the normal rats: 150 +/- 7 and 116 +/- 2 mm Hg, resp. The first group of animals had a hypertensive factor in the blood. The hypertensive activity of the calcium-deficient animals was associated with no known pressor agents and was rather similar to Pang's hypertensive factor.

[Hypertensive activity of blood plasma of WKY rats with a calcium deficiency in drinking water].

The effects of low (8.0 mg/l) and normal (80 mg/l) Ca2+ water diets on systolic blood pressure (SBP) and hypertensive plasma activity were studied. At the end of the 16-week experimental period SBP in the low-Ca2+ group of animals was higher than in the control group after the water treatment: 161 sigma 9 and 120 +/- 4 mm Hg respectively.