Clinical Trials Logo

Clinical Trial Summary

The purpose of the study to assess the diurnal rhythm in natriuretic peptide levels and its temporal relationship with nocturnal blood pressure in obese and African-American individuals as compared with lean and white individuals.

Clinical Trial Description

Obese and African-American individuals are at greater risk for cardiovascular morbidity and mortality than lean and white individuals. One of the key reasons for this health disparity is a higher risk of hypertension among obese and African-American individuals. The reasons for why these disparities develop are not well understood.

Natriuretic peptides are hormones produced by the heart and have a wide range of favorable cardiovascular effects such as natriuresis (sodium excretion), vasodilation, and direct inhibition of the renin-angiotensin-aldosterone system. Human studies showed the existence of 24-hour (diurnal) variations in the circulating natriuretic peptide levels.

Prior work from the investigators and others demonstrated that individuals with genetically-determined lower circulating natriuretic peptides levels have higher blood pressure and greater risk of hypertension. Further, the investigators have shown that obesity and African-American race are associated with lower natriuretic peptide levels, suggesting that relatively low natriuretic peptide levels may be a biologic determinant contributing to health disparities.

Obese and African-American individuals have a greater prevalence of nocturnal hypertension [nighttime blood pressure >120/80 mmHg], which is an independent risk factor for cardiovascular events. The underlying reasons for 24-hour variations in blood pressure are unknown.

The investigators hypothesize that loss of the natural 24-hour rhythm of natriuretic peptide levels plays a role in the development of nocturnal hypertension in obese and African-American individuals. The aims of this study are:

1. to examine whether there is a presence of a 24-hour rhythm in natriuretic peptide levels among normotensive obese and African-American individuals and whether there is a difference in the rhythmicity of natriuretic peptide levels between obese and lean as well as in African-Americans and whites;

2. to examine whether there is an existence of a relationship between 24-hour variability of natriuretic peptide levels and 24-hour patterns of blood pressure and whether this relationship of rhythmicity of natriuretic peptide levels and nocturnal blood pressure differed in obese and lean individuals and by race. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT03834168
Study type Interventional
Source University of Alabama at Birmingham
Contact Pankaj Arora, MD
Phone 205-996-6630
Status Recruiting
Phase N/A
Start date April 1, 2019
Completion date March 31, 2024

See also
  Status Clinical Trial Phase
Recruiting NCT03640442 - Modified Ramped Position for Intubation of Obese Females. N/A
Recruiting NCT03042897 - Exercise and Diet Intervention in Promoting Weight Loss in Obese Patients With Stage I Endometrial Cancer N/A
Completed NCT03644524 - Heat Therapy and Cardiometabolic Health in Obese Women N/A
Recruiting NCT03227575 - Effects of Brisk Walking and Regular Intensity Exercise Interventions on Glycemic Control N/A
Recruiting NCT01870947 - Assisted Exercise in Obese Endometrial Cancer Patients N/A
Recruiting NCT03714646 - Beta Glucan and Acetate Production N/A
Recruiting NCT03652987 - Endocrine and Menstrual Disturbances in Women With Polycystic Ovary Syndrome (PCOS)
Recruiting NCT03255005 - Endomina Controlled Study N/A
Enrolling by invitation NCT03063606 - Behavioral and Pharmacologic Treatment of Binge Eating and Obesity: Specialist Treatment Phase 2/Phase 3
Terminated NCT03299881 - Safety and Effectiveness of Transcutaneous Electrical Nerve Stimulation (TENS)-Assisted Weight Loss N/A
Completed NCT03317587 - Inspiring Nutritious Selections and Positive Intentions Regarding Eating and Exercise (INSPIRE) N/A
Active, not recruiting NCT02558920 - Meta-analyses of Food Sources of Fructose-Containing Sugars and Obesity
Active, not recruiting NCT03610958 - Safety and Performance Evaluation of the Epitomee Device for Enhancing Satiety and Weight Loss. N/A
Completed NCT02235961 - Investigate Safety, Tolerability and Pharmacokinetics for Single Doses of NNC9204-0530 Alone and in Combination With Liraglutide in Overweight to Obese But Otherwise Healthy Male Subjects Phase 1
Completed NCT03195712 - Metabolically Healthy Obesity: Correlations Between BMI and Metabolic Syndrome Biomarkers N/A
Completed NCT00341406 - Fat Cell Size in Insulin Resistance
Recruiting NCT03678766 - CHARGE: Controlling Hunger and ReGulating Eating N/A
Not yet recruiting NCT03470272 - Effects of Red Light LED Therapy on Body Contouring N/A
Recruiting NCT03627104 - Effect of Dietary Protein and Energy Restriction in the Improvement of Insulin Resistance in Subjects With Obesity N/A
Recruiting NCT03821961 - 18F-FDOPA PET/CT Imaging in Patients Undergoing Metabolic Surgery N/A