Endothelial Dysfunction Clinical Trial
Official title:
Endothelial, Autonomic and Pressure Effects of Paroxetine in Recent Postmenopause Women With Hot Flashes: a Randomized Placebo Controlled Clinical Trial
Hot flashes, vasomotor symptoms that affect many postmenopausal women, are associated with cardiovascular disease and endothelial dysfunction. Estrogen therapy, associated or not with progestogens, is the standard treatment for vasomotor symptoms and improves the endothelial function of postmenopausal women with hot flushes, even those with cardiovascular risk factors, such as hypertension. It is not known whether hot flushes are a cause for the development of endothelial dysfunction or are markers of this dysfunction, evidenced by estrogen deficiency, thus representing primitive target organ (vessel) lesion. Paroxetine was approved by the FDA as a non hormonal treatment for menopausal hot flashes. In this double-blind randomized clinical trial, the vascular effects of paroxetine at a dose of 7.5 mg / day, compared to placebo, during 12 weeks are evaluated.
Paroxetine and placebo effects at baseline and after 12 weeks in endothelial, autonomic and
pressure components of vascular function are evaluated.
Non invasive venous occlusion plethysmography is used to study endothelial function;
ambulatory blood pressure monitoring is used to study blood pressure variations during
daytime and nocturnal descent; autonomic function is studied following sympathetic and
parasympathetic parameters through heart rate variability.
The effects of paroxetine and placebo are also evaluated on:
- daytime sleepiness (through Epworth Sleepiness Scale ),
- sleep quality (through Pittsburgh Sleep Quality Index),
- perceived stress (through Perceived Scale Stress).
Biochemical and hormonal profiles including complete lipid profile, fasting glucose, insulin,
estradiol, follicle stimulating hormone (FSH), luteinizing hormone (LH); inflammatory and
oxidative stress markers are also studied.
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