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One goal of this study is to determine whether people with different amounts of dopamine-beta-hydroxylase (DBH) have different responses to events that affect blood pressure and heart rate. We will also study whether increasing dietary salt improves symptoms during upright posture. Finally, we will examine whether the dietary sodium level influences serum DBH activity and whether DBH level influences the response to sodium. DBH levels and the function of the sympathetic or involuntary nervous system will be assessed in normal volunteers and in patients with postural tachycardia syndrome (POTS).
Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Supportive Care
Postural Tachycardia Syndrome
dietary sodium, dietary sodium, dietary sodium
Active, not recruiting
Published on BioPortfolio: 2014-08-27T03:27:53-0400
The overall objective of this study is to examine how dietary sodium is used by the body. In a racially diverse sample of adults, the investigators will examine the effects of high and low...
OBJECTIVES: I. Assess the safety and efficacy of sodium phenylbutyrate, sodium benzoate, sodium phenylacetate, and dietary intervention in patients with urea cycle disorders.
To compare the effects of two levels of dietary sodium on blood pressure in Black men and women, and to determine what factors predict the degree of response.
Currently, the recommendations for sodium intake restriction for patients with heart failure are mostly based on expert consensus and observational evidence, whereas smaller randomized stu...
The purpose of this study is to learn how plants can play a role in gain/loss of sodium in the urine and in the regulation of blood pressure. Dopamine is a chemical mostly present in the b...
- Dietary sodium and potassium intakes are well-known risk factors for cardiovascular outcomes. However, the associations between dietary sodium and potassium and diabetes are still controversial. Our...
To determine the impact of altering dietary sodium intake for 3 days preceding exercise on sweat sodium concentration [Na], and cardiovascular and thermoregulatory variables.
To understand the status and food sources of daily dietary intake of sodium and potassium among adult inhabitants in Tianjin city, and to compare the consistence of sodium and potassium intake determi...
Recent evidence suggests the gut microbiota contributes to the pathogenesis of hypertension (HTN). The gut microbiota is a highly dynamic organ mediating numerous physiological functions, which can be...
While excess dietary sodium impairs vascular function by increasing oxidative stress, the dietary incorporation of dairy foods improves vascular health. We demonstrated that single-meal cheese consump...
Sodium or sodium compounds used in foods or as a food. The most frequently used compounds are sodium chloride or sodium glutamate.
Dietary recommendations that promote reduction in or prevention of high blood pressure. Recommendations include increasing intake of fruits and vegetables, and high-fiber, low-fat foods and reducing the intake of DIETARY SODIUM and high fat foods.
Sodium chloride used in foods.
Membrane transport proteins that actively co-transport ASCORBIC ACID and sodium ions across the CELL MEMBRANE. Dietary absorption of VITAMIN C is highly dependent upon this class of transporters and a subset of SODIUM GLUCOSE TRANSPORTERS which transport the oxidized form of vitamin C, DEHYDROASCORBIC ACID.
A trihydroxy bile salt that is used as a digestive aid in dietary supplements. It is used in culture media and in conjunction with PAPAIN and PANCREATIN.
Cardiology is a specialty of internal medicine. Cardiac electrophysiology : Study of the electrical properties and conduction diseases of the heart. Echocardiography : The use of ultrasound to study the mechanical function/physics of the h...
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...