Background: Endothelin (ET) is the strongest endogenic substance causing vasoconstriction. The aim of this study was to assess the influence of ACEI therapy on serum concentration of ET-1 plasma activity in young patients with essential mild-to-moderate hypertension.
Design And Methods: 19 persons with essential mild-to-moderate hypertension were enrolled into study (14 male and 5 female). The average age of this group was 17.6+/-1.4 years. The patients were untreated or there was a 7 day wash out period. The blood pressure and serum concentration of ET-1 plasma were measured before enrolling and after 6 weeks of trandolapril (2 mg per day) therapy. The concentration of endothelin-1 was measured using RIA methods.
Results: In analyzed group there was a significant both SBP and DBP lowering after the ACEI therapy. SBP was reduced from 142.6+/-9.7 to 129.3+/-8.4 mmHg (p<0.003), DBP from 85.7+/-6.9 to 79.8+/-8.6 mmHg (p<0.01). The average serum concentration of endothelin-1 was: before treatment 9.33+/-1.9 fmol/ml and after therapy 8.96+/-2.2 fmol/ml.
Conclusion: The treatment with ACEI drug (trandolapil) induced the significant decrease of SBP and DBP in young hypertensives. 6-weeks trandolapril therapy was associated with the reduction of serum concentration of ET-1, but not statistically significant.
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