View clinical trials related to Hyperaldosteronism; Primary.
Filter by:collaborative work within 2 hospitals at the CHU of Caen, at the CHRU of Lille, concerning the evaluation of the biological markers of primary hyperaldosteronism (PAH) with the dosage of aldosterone in LC -MS/MS, which is performed in both centers, with two different techniques. The main objective is to define the range of Aldosterone concentrations in LC MS/MS, of renin in an automated method, in populations of healthy volunteers, essential hypertensives, and hypertensives with primary hyperaldosteronism. , in order to establish a threshold for the screening of PAH by the RAR, and for the confirmation of PAH by a dynamic test with an Aldosterone threshold post salt load test.
This study looks at how hypertensive patients, with high levels of aldosterone (hyperaldosteronism) differ from hypertensive patients without hyperaldosteronism with regards to markers of salt appetite. It also looks at how salt appetite changes after treatment of hyperaldosteronism. Salt makes food taste good and when our bodies need salt our brains make us like salty food even more. A high salt diet contributes to hypertension and a low salt diet is an important aspect of the treatment of hypertension. Unfortunately patients find it difficult to adhere to a low salt diet. Aldosterone is produced by the adrenal glands, its release is stimulated by a salt need and it has been shown, in rodent models, to activate pathways in the brain which drive a salt appetite. Mice with enhanced activity of the aldosterone pathway in the brain become hypertensive due to increased salt intake. Hyperaldosteronism, in humans, results in hypertension. The contribution of salt appetite, as opposed to the effect of aldosterone on the kidney's retention of salt and other systems, is unknown. Human studies have shown that when a human has a salt appetite, the concentration at which they can detect the taste of salt reduces, they increase their preference for salty food, and they consume more salt. When hyperaldosteronism is suspected in a hypertensive patient, they attend hospital for a day of investigations. Patient who are shown to have hyperaldosteronism have subsequent visits for imaging of their adrenals and sampling of blood from the adrenal vein to diagnose aldosterone producing adenomas (small tumours) which may be removed surgically, if not suitable for surgery, the hyperaldosteronism is treated with medication. This study will recruit hyperaldosteronism patients to investigate the effect of aldosterone on salt appetite by testing salt taste threshold, salt taste preference and intake before and after treatment.
To investigate the prevalence of primary aldosteronism (PA) in Chinese patients with newly diagnosed hypertension.