Serum alphaJadrenomodulating activity in arterial hypertension

Abstract

In experiments with longitudinal stripes of cow renal artery, serum taken from healthy people and patients with Stage II arterial hypertension (AH), in titrations 1:100, 1:500, 1:1000, and 1:10000, did not influence tonotropic, alpha-drenoreceptor (AR) activating effect of adrenaline (10–6 g/ml). In titration 1:50, this effect was enhanced, due to serum alpha-adrenosensitizing activity. In Stage III AH, female serum did not affect tonotropic effect of adrenaline, and male serum reduced it in titrations 1:50, 1:100, and 1:1000, due to alpha-adrenoblocking activity. Therefore, 1) serum of cormotensive people and patients with Stage II AH could contain endogenous sensitizer of alpha-AR (ESAAR), and in Stage III AH its level might be reduced; 2) serum of males with Stage III AH could contain endogenous blocker of alpha?AR (EBAAR). The nature of ASAAR and EBAAR and their role in AH pathogenesis is discussed.

Keywords

• endogenous modulators
• modulators of alphajadrenoreactivity
• arterial hypertension
• experimental study