EFFECT OF CHOLECALCIFEROL ON RATE OF MORNING BLOOD PRESSURE RISE IN WOMEN WITH ARTERIAL HYPERTENSION IN PREMENOPAUSAL AND EARLY POSTMENOPAUSAL PERIODS

Abstract

Objective: To assess effect of cholecalciferol on rate of morning blood pressure (BP) rise in women with arterial hypertension (AH) in premenopausal and early postmenopausal periods. Design and method: We investigated 102 women with AH stage II risk 3 aged 50 (48; 53) years: 50 females in premenopausal period – group I and 52 females in early postmenopausal period – group II. Serum level of 25(OH)D was determined by the immunoenzymatic assay. In groups I and II we identified subgroups with the level of 25(OH)D< 30ng/ml: subgroup IB (n = 25) and subgroup IIB (n = 21) respectively, in which antihypertensive therapy was supplemented with cholecalciferol 2,000 IU/day for 3 months. In subgroups IA (n = 25) and IIA (n = 31) cholecalciferol was not administered. The rate of morning BP rise was calculated by the ratio of the BP rise value to its time using daily monitoring of BP. Results: At baseline the level of 25(OH)D was lower (p < 0,05) in subgroups IB (19,3 ± 8,5ng/ml) and IIB (18,2 ± 9,5ng/ml) than in the comparable subgroups IA (26,7 ± 11,5ng/ml) and IIA (27,4 ± 10,5ng/ml). After supplementation the level of 25(OH)D increased (p < 0,001) in subgroup IB (37,28 ± 11,97ng/ml) and in subgroup IIB (36,4 ± 10,0ng/ml), and became higher (p < 0,001) than in the comparable subgroups I and IIA. At baseline, subgroups IA and IB did not differ (p > 0,05) by rate of morning SBP/DBP rise. In subgroup IIB rate of morning DBP rise was higher (p = 0,04) than in subgroup IIA. After therapy in subgroup IB there was a decrease rate of morning SBP/DBP rise (p < 0,05); in subgroup IA, rate of morning SBP/DBP rise did not change (p > 0,05). In subgroup IIA, there was no decrease (p = 0.62) rate of morning DBP rise, while in subgroup IIB, rate of morning DBP rise in the decreased (p < 0,05) compared to the baseline and in comparison with rate of morning DBP rise in subgroup IIA after therapy (p = 0,04). The contribution of cholecalciferol to the dynamics of rate of morning DBP rise was established: F = 4,33, p = 0,04. Conclusions: Correction of 25(OH)D level by intake of cholecalciferol 2000 IU/day for 3 months leads to reduction of rate of morning BP rise in women with AH.