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[The effect long-term administration of a selective beta1 blocker bisoprolol on glucose metabolism in patients with essential hypertensive and type 2 diabetes mellitus]

Author(s): Wang B, Song WH, Liu GZ, Multi-center Cooperation Group of Bisoprolol

Affiliation(s): Fuwai Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100037, China.

Publication date & source: 2005-07, Zhonghua Nei Ke Za Zhi., 44(7):503-5.

Publication type: Randomized Controlled Trial

OBJECTIVE: To investigate the effects of bisoprolol on glucose metabolism and blood pressure in essential hypertensive patients with type 2 diabetes mellitus. METHODS: A total of 92 hypertensive patients with type 2 diabetes on stable antidiabetic therapy with HbAlc less than 7% were recruited. In a randomized, open trial the patients were treated for 12 weeks with bisoprolol or captopril following a 1-week placebo run-in period, the main parameters measured were HbA1c, fasting blood glucose and 2-hour postprandial glucose following a standard dinner as well as systolic and diastolic blood pressure. RESULTS: There were no differences in HbA1 [(6.0 +/- 0.8)% vs (6.2 +/- 0.8)%, P > 0.05], fasting glucose [(7.0 +/- 1.8) mmol/L vs (7.0 +/- 1.9) mmol/L, P > 0.05], 2-hour postprandial blood glucose [(10.7 +/- 2.5) mmol/L vs (11.2 +/- 3.4) mmol/L, P > 0.05], systolic blood pressure [(147.3 +/- 9.7) mm Hg (1 mm Hg = 0.133 kPa) vs (146.2 +/- 8.3) mm Hg, P > 0.05] and diastolic blood pressure (88.3 +/- 8.9 mm Hg vs 87.8 +/- 7.9 mm Hg, P > 0.05) between the bisoprolol and captopril group before treatment. After administration of bisoprolol or captopril, there were still no differences between these two groups in HbA1c [(5.7 +/- 0.9)% vs (5.7 +/- 1.1)%, P > 0.05], fasting blood glucose [(6.8 +/- 1.6) mmol/L vs (6.4 +/- 2.1) mmol/L, P > 0.05], 2-hour postprandial glucose [(10.0 +/- 2.9) mmol/L vs (10.2 +/- +/- 2.9)mmol/L, P > 0.05], systolic blood pressure [(124.8 +/- 10.6) mm Hg vs (126.6 +/- 7.8) mm Hg, P > 0.05] and diastolic blood pressure [(74.5 +/- 7.7) mm Hg vs (77.6 +/- 7.6) mm Hg, P = 0.05]. CONCLUSIONS: Based on these results, bisoprolol appears to be a beta1-selective blocker possessing a satisfactory antihypertensive effect without any adverse effects on glucose metabolism and is therefore a choice for treating hypertensive patients with type 2 diabetes mellitus.

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