Munenori Takata

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Marfan syndrome is an inherited disorder characterized by genetic abnormality of microfibrillar connective tissue proteins. Endothelial dysfunction is thought to cause aortic dilation in subjects with a bicuspid aortic valve; however, the role of endothelial dysfunction and endothelial damaging factors has not been elucidated in Marfan syndrome.(More)
Aortic stenosis (AS) is the most common valvular disease and aortic valve replacement (AVR) is one of its most effective interventions. AS affects not only the left ventricle, but also vascular function beyond the stenotic valve, which can lead to various types of vascular dysfunction. However, research evaluating the effect of AS on aortic vascular(More)
OBJECTIVE: To investigate the clinical significance of flow-mediated dilation (FMD) in systemic sclerosis (SSc). METHODS: Thirty-three SSc patients and 12 healthy controls were studied. Ultrasound assessment of the brachial artery FMD was performed on all subjects. The results were expressed as the percentage of increase in brachial artery diameter(More)
BACKGROUND Endothelial dysfunction and autonomic nervous system imbalance are both risk markers of atherosclerotic vascular damage. The relationship between these 2 factors, however, has not been clarified concisely. METHODS AND RESULTS Flow-mediated dilation (FMD) was measured in 47 patients with ischemic heart disease (IHD; mean age, 68.1±7.1 years)(More)
PURPOSE The physiological role of vasomotion, rhythmic oscillations in vascular tone or diameter, and its underlying mechanisms are unknown. We investigated the characteristics of brachial artery vasomotion in patients with ischemic heart disease (IHD). METHODS We performed a retrospective study of 37 patients with IHD. Endothelial function was assessed(More)
The aim of this study was to evaluate the add-on effect of aliskiren to valsartan on endothelial-dependent vasodilation in hypertensive patients with ischemic heart disease (IHD). After 4 weeks of treatment with 80 mg of valsartan, 28 patients were allocated to either continued treatment with valsartan or an add-on treatment with valsartan plus 150 mg of(More)
The clinical meaning of changes in PP with posture remains unclear. We performed treadmill exercise testing on 144 subjects to diagnose ischemic heart disease, and measured the PPs in the supine and standing positions. The differences in the two PPs ranged between -35 and 45 mmHg. Eleven subjects were diagnosed with significant coronary ischemia. The(More)
BACKGROUND Differences in regulating factors and the clinical implications of body temperature variability (BTV) between subjects with and without diabetes have not been clarified to date. METHODS AND RESULTS In 66 subjects with ischemic heart disease (33 with diabetes and 33 without diabetes), BTV, the difference between the highest and lowest(More)