The effects of nebivolol on fibrinolytic parameters in mild and moderate hypertensive patients
- PMID: 17593991
- PMCID: PMC2651945
- DOI: 10.1016/s0828-282x(07)70227-1
The effects of nebivolol on fibrinolytic parameters in mild and moderate hypertensive patients
Abstract
Background: The aim of the present study was to investigate the effects of nebivolol (5 mg daily) on plasma levels of hemostatic and fibrinolytic endothelial function markers in mild or moderate hypertensive patients.
Methods and results: Thirty-five (22 female, 13 male; mean +/- SD 54.7 +/- 11.3 years of age) mild and moderate hypertensive patients were included the study. The mean systolic blood pressure [BP] was 160 mmHg (range 150 mmHg to 165 mmHg) and the mean diastolic BP was 100 mmHg (range 90 mmHg to 100 mmHg). Plasma tissue plasminogen activator antigen (tPA-Ag), plasminogen activator inhibitor type 1 antigen (PAI-1-Ag), PAI-1 activity, tPA-Ag/PAI-1-Ag index, fibrinogen and euglobulin lysis time were determined before and after two months of therapy. tPA-Ag and PAI-Ag levels were measured by ELISA. After this period, treatment with nebivolol (5 mg/day) in all patients was associated with a significant decrease in systolic BP and diastolic BP (P<0.001 for each), heart rate (P<0.01), fibrinogen (P<0.005) and euglobulin lysis time (P<0.01). The tPA-Ag and tPA-Ag/PAI-1-Ag index levels were increased significantly (P<0.001 for each) in all patients, but the PAI-1-Ag (P>0.05) and PAI-1 activity (P>0.05) did not show significant change. In the present study, there was no correlation between decreases in arterial BP and decreases in fibrinolytic parameters (P>0.05), but there was a positive, statistically significant correlation between fibrinogen and body mass index (P<0.001).
Conclusions: The results indicated that, compared with no treatment, a two-month treatment trial with nebivolol was associated with a more favourable modification of hemostatic and fibrinolytic status in addition to antihypertensive effects.
CONTEXTE :: La présente étude avait pour but de déterminer les effets du nébivolol (5 mg par jour) sur la concentration sanguine de marqueurs endothéliaux de l’hémostase et de la fibrinolyse chez des patients atteints d’hypertension artérielle (HTA) légère ou modérée.
MÉTHODE ET RÉSULTATS :: Trente-cinq sujets (22 femmes et 13 hommes; âge moyen ± écart-type : 54,7±11,3) atteints d’HTA légère ou modérée ont participé à l’étude. La pression artérielle systolique (PAS) moyenne était de 160 mm Hg (150–165 mm Hg) et la pression artérielle diastolique (PAD) moyenne, de 100 mm Hg (90–100 mm Hg). Il y a eu mesure des taux d’antigènes de l’activateur tissulaire du plasminogène (A-ATP) et d’antigènes de l’inhibiteur de l’activateur du plasminogène de type 1 (A-IAP-1), du degré d’activité de l’IAP-1, de l’indice A-ATP/A-IAP-1, de la concentration de fibrinogène et du temps de lyse de l’euglobuline avant et après un traitement d’une durée de deux mois. Les taux d’A-ATP et d’A-IAP ont été mesurés selon la méthode ELISA. Après la période d’essai, le traitement au nébivolol (5 mg par jour) a été associé, chez tous les patients, à une diminution significative de la PAS (p < 0,001), de la PAD (p < 0,001), de la fréquence cardiaque (p < 0,01), de la concentration de fibrinogène (p < 0,005) et du temps de lyse de l’euglobuline (p < 0,01). Une augmentation signification du taux d’A-ATP et de l’indice A-ATP/A-IAP-1 (p < 0,001 chacun) a été observée chez tous les sujets, mais le taux d’A-IAP-1 (p > 0,05) et l’activité de l’IAP-1 (p > 0,05) n’ont pas montré de variation importante. Aucune corrélation n’a été établie entre la diminution de la pression artérielle et la diminution des paramètres relatifs à la fibrinolyse (p > 0,05) dans la présente étude, mais une possible corrélation statistiquement significative a été observée entre la concentration de fibrinogène et l’indice de masse corporelle (p < 0,001).
CONCLUSIONS :: Outre ses effets antihypertenseurs, l’essai de traitement au nébivolol, d’une durée de deux mois, a été associé à une modification favorable des marqueurs de l’hémostase et de la fibrinolyse par rapport à l’absence de traitement.
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