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Microvascular angina, also known as cardiac syndrome X, is characterized by anginal chest pain, at least one cardiovascularrisk factor, an abnormal stress test and normal coronary arteries on angiography. It is significantly more common in women than in men. A definitive diagnosis of microvascular
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Syndrome X and microvascular angina are a heterogenous group of diseases. Several medications, including angiotensin-converting enzyme inhibitors, beta-blockers, and calcium-channel blockers, have been reported to be successful in the treatment of microvascular angina. Control of hypertension and
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Thirteen hypertensive patients with microvascular angina were studied before and afterreceiving oral L-arginine (4 weeks, 2 g, 3 times daily). L-arginine significantly improved angina class, systolic blood pressure at rest, and quality of life. Maximal forearm blood flow, plasma L-arginine,
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OBJECTIVE
To investigate the plasma asymmetric dimethylarginine (ADMA) levels and L-arginine in the essential hypertension (EH) patients without coronary artery disease.
METHODS
A total of 86 Chinese patients were enrolled in this study. All patients received coronary multidetector-row computed
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BACKGROUND
The pathogenesis of impaired endothelium-dependent coronary vasodilation in angina pectoris and normal coronary arteriograms (microvascular angina pectoris) is not known. We examined whether supplementation with L-arginine, a precursor of endothelium-derived nitric oxide, improves
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OBJECTIVE
It remains to be elucidated whether and how endothelial functions are impaired in peripheral circulation of patients with coronary functional disorders, such as vasospastic angina (VSA) and microvascular angina (MVA). We simultaneously examined endothelial functions of
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A decreased nitric oxide (NO) bioavailability and an increased oxidative stress play a pivotal role in different cardiovascular pathologies. As red blood cells (RBCs) participate in NO formation in the bloodstream, the aim of this study was to outline the metabolic profile of L-arginine (Arg)/NO
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Angina without coronary artery disease (CAD) has substantial morbidity and is present in 10% to 30% of patients undergoing angiography. Coronary microvascular dysfunction (CMD) is present in 50% to 65% of these patients. The optimal treatment of this cohort is undefined. We performed a systematic
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The vascular endothelium is the site of formation of several powerful mediators. One of these is NO, a chemically unstable radical formed by enzymatic conversion of L-arginine in the presence of molecular oxygen. NO elicits relaxation of VSMC by activating cytosolic guanylate cyclase. NO also
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