The effect of oral alpha-lipoic acid in overweight/obese individuals on brachial-ankle pulse wave velocity and supine blood pressure:a randomized,crossover,double-blind,placebo-controlled trial
10.3760/cma.j.issn.0254-6450.2011.03.020
- VernacularTitle:口服α-硫辛酸对超重或肥胖患者脉搏波速度和卧位血压影响的随机、双盲、安慰剂对照、交叉试验研究
- Author:
Yong-Di HUANG
1
;
Nong LI
;
Wei-Guo ZHANG
;
Xiao-Juan HU
;
Qian WANG
;
Chen-Chen WANG
;
Rui-Wei XU
;
Kai YAN
;
Xue-Yan HOU
;
Naerkeze
;
Xiao-Ling WANG
;
Wei-Li YAN
Author Information
1. 新疆医科大学
- Keywords:
Alpha-lipoic acid;
Overweight/obesity;
Brachial-ankle pulse wave velocity;
Supine blood pressure;
Cardiovascular risk factors
- From:Chinese Journal of Epidemiology
2011;32(3):290-296
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of oral alpha-lipoic acid (ALA) supplement on brachial-ankle pulse wave velocity (baPWV),supine systolic blood pressure (SBP) and diastolic blood pressure (DBP) in overweight/obese individuals.An 8-week double-blind,randomized,placebo-controlled and cross-over trial with a 4-week washout between cross-over periods.Methods Sixty-three males and 40 females aged 22-57 years old who met the inclusion criteria as (1) Han ethnicity;(2) 20-60 years old;(3) BMI≥25 kg/m2 and having at least one of the following risk factors:borderline hypertension (130 mm Hg≤SBP＜140 mm Hg and/or 85 mm Hg≤supine DBP＜90 mm Hg),dyslipidemia(fasting total cholesterol≥5.2 mmol/L or HDL-C＜1.04 mmol/L),or impaired fasting glucose (6.1 mmol/L≤fasting glucose＜7.0 mmol/L);(4)Not on any antioxidant gender.Group 1 received 8 weeks ALA (1200 mg/day) followed by 4-week washout period and followed by another 8 weeks placebo;while Group 2 received 8 weeks placebo (1200 mg/day)followed by 4-week washout period,and followed by ALA treatment for 8 weeks.BaPWV and supine blood pressure were measured at the beginning of 1st phase and 2nd phase and at the endpoint of the whole trial.Mixed effect linear regression model was performed to compare the change of baPWV and supine blood pressure between ALA group and placebo group.Results BaPWV decreased -33.03 cm/s ± 130.70 cm/s for ALA group and increased 5.66 cm/s ± 139.89 cm/s for placebo group,supine systolic blood pressure decreased -4.09 mm Hg±9.18 mm Hg for ALA group and -2.32 mm Hg±8.16 mm Hg for placebo group.Supine diastolic blood pressure decreased -1.29 mm Hg ± 6.55 mm Hg for ALA group and -0.48 mm Hg±6.63 mm Hg for placebo group.These three mix-effect models did not show significant effect of ALA treatment after adjustment on baseline values,sex,age,treatment sequence or period.Conclusion The current trial did not provide evidence that oral intake of ALA for 8 weeks had significant effects on lowering baPWV,supine systolic blood pressure or supine diastolic blood pressure.
