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Angiology
Year: 2009  |  Volume: 60  |  Issue: 3  |  Page No.: 351 - 357

Effect of Weight Reduction With Dietary Intervention on Arterial Distensibility and Endothelial Function in Obese Men

A Miyaki, S Maeda, M Yoshizawa, M Misono, Y Saito, H Sasai, T Endo, Y Nakata, K Tanaka and R. Ajisaka    

Abstract:

Obesity and reduction in central arterial distensibility, respectively, have been identified as powerful and independent risk factors for cardiovascular disease. However, the effect of weight reduction on central arterial function in obese subjects has not yet been clarified. We investigated whether low-calorie diet-induced weight reduction affects central arterial distensibility and endothelial function in middle-aged obese men. Twelve obese men (age: 45+2 yrs, BMI: 30+1 kg/m 2) completed a 12-week dietary intervention. Caloric restriction induced significantly weight loss and decrease in BMI. After the program, carotid arterial compliance significantly increased and b-stiffness index and aortic pulse-wave velocity remarkably decreased. Concentrations of plasma endothelin-1 (ET-1) significantly decreased and plasma nitric oxide (NO) markedly increased after the program. Weight reduction by low-calorie diet in obese men increases central arterial distensibility, which may contribute to the improvement in endothelial function, as noted by a decrease in ET-1 and an increase in NO.

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