HOME >> BIOLOGY >> NEWS
Does a new hypothesis help explain higher levels of hypertension among African-Americans?

(Atlanta, GA) Some 50 million Americans have high blood pressure, according to the American Heart Association, yet the prevalence of essential hypertension -- high blood pressure with no identifiable cause -- is much higher in African-Americans than in Caucasians. While this disparity is well documented, the mechanisms by which stress might contribute to these differences are far less clear.

Most studies have used a "reactivity hypothesis" to help identify the reasons behind the differences. This hypothesis assumes that blacks exhibit exaggerated blood pressure (BP) responses to stress which produce vascular damage that underlies the premature development of essential hypertension. An alternative to this widely accepted approach is the "pressure natriuresis" hypothesis. It supposes that stress-induced impaired sodium (salt) regulation leads to an extended period of elevated BP in blacks, and that the resulting increase in BP load leads to the early development of hypertension and its consequences.

A New Study

The latter approach has been put to the test by a team of researchers. The authors of a new study entitled "Race Differences in Stress-Induced Salt Sensitivity and Resulting Blood Pressure Load," are Gregory A. Harshfield, Martha E. Wilson, Kathryn McLeod, Coral Hanevold, Gaston Kapuka, Lynne Mackey, Lesley Edmunds and Delores Gillis, all of the Medical College of Georgia, Augusta, GA. They will present their findings during the upcoming scientific conference, Understanding Renal and Cardiovascular Function Through Physiological Genomics, a meeting of the American Physiological Society (APS) (www.the-aps.org), being held October 1-4, 2003 at the Radisson Riverfront Hotel and Convention Center, Augusta, GA.

Methodology

To test the hypothesis that stress is a contributing factor through its effects on pressure natriuresis (the excretion of sodium in urine, usually in exce
'"/>

Contact: Donna Krupa
djkrupa1@aol.com
703-527-7357
American Physiological Society
30-Sep-2003


Page: 1 2

Related biology news :

1. New genetic hypothesis for the cause of autism
2. A new hypothesis about autoimmunity. Is it possible to be too clean?
3. A new hypothesis on the origin of junk DNA
4. Missing genes may help explain why plague bacteria are so deadly
5. MIT team explains yin-yang of ginseng
6. Scientists fear new Ebola outbreak may explain sudden gorilla disappearance
7. Study explains spatial orientation differences between sexes
8. New model explains why costly insect outbreaks hard to predict
9. Brain serotonin enzyme finding might explain psychiatric disorders
10. Study helps explain island populations susceptibility to exotic diseases
11. Small gene changes in some leukemia patients may explain varying responses to chemotherapy

Post Your Comments:
(Date:10/31/2014)... air out of a nagging mystery about the development of ... to why animal species didn,t flourish sooner, once sufficient oxygen ... end of the Proterozoic period, about 800 million years ago ... most researchers think there also was plenty of oxygen? , ... all. , In a study published Oct. 30 in ...
(Date:10/31/2014)... against Ebola one important hurdle has just been cleared ... University of North Carolina at Chapel Hill and colleagues ... can be infected with Ebola and display symptoms similar ... the current issue of Science , will significantly ... are desperately needed to curb the worldwide public health ...
(Date:10/31/2014)... his team have been studying the behavior of ... Alps for years. They observed that ravens slowly ... and playing. However, they also observed that these ... individual. Although in about 50 % of the ... the two affiliating ravens, intervening can be potentially ...
Breaking Biology News(10 mins):Lack of oxygen delayed the rise of animals on Earth 2Improved mouse model will accelerate research on potential Ebola vaccines, treatments 2
(Date:10/30/2014)... 2014 Deep Research Report on Global ... and in-depth research report on the China Naltrexone ... including its definition, classification, application, and industry chain ... covers the international market analysis, including China’s domestic ... macroeconomic environment & economic situation analysis. The report ...
(Date:10/30/2014)... SoundConnect , an industry leading ... end users the key to turning this already ... adding voice enablement and hybrid audio conferencing. , ... communication tool that includes presence, instant messaging and ... becomes a comprehensive unified communications solution. Adding the ...
(Date:10/30/2014)... MA (PRWEB) October 30, 2014 James Sherley ... advance in adult tissue stem cell technology since his days ... (FCCC) in Philadelphia in the late 1990’s. Sherley founded ... The company holds all the intellectual property developed in ... professor at the Massachusetts Institute of Technology (MIT), and more ...
(Date:10/30/2014)... Whitehouse Laboratories has formally announced a ... and Package Test Capacity. Responding to growing demands from ... increase in environmental chamber storage space that will enable ... samples to be securely held on site at Whitehouse ... has already taken place with the recent completion of ...
Breaking Biology Technology:Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 2Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 3SoundConnect Launches Voice Enablement and Hybrid Audio Conferencing for Office 365 2SoundConnect Launches Voice Enablement and Hybrid Audio Conferencing for Office 365 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 2Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 4Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 2Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 3
Cached News: