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:
*Name:
*Comment:
*Email:


(Date:4/26/2016)... , April 27, 2016 ... the  "Global Multi-modal Biometrics Market 2016-2020"  report to ... ) , The analysts forecast the ... CAGR of 15.49% during the period 2016-2020.  ... number of sectors such as the healthcare, BFSI, ...
(Date:4/13/2016)... , April 13, 2016  IMPOWER physicians supporting Medicaid ... setting a new clinical standard in telehealth thanks to ... leveraging the higi platform, IMPOWER patients can routinely track ... and body mass index, and, when they opt in, ... convenient visit to a local retail location at no ...
(Date:3/22/2016)... India , March 22, 2016 /PRNewswire/ ... market research report "Electronic Sensors Market for Consumer ... Proximity, & Others), Application (Communication & IT, ... Geography - Global Forecast to 2022", published ... industry is expected to reach USD 26.76 ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... TOKYO , June 24, 2016  Regular discussions on ... to take place between the two entities said Poloz. ... in Ottawa , he pointed to the ... and the federal government. ... Poloz said, "Both institutions have common economic goals, why not ...
(Date:6/23/2016)... WA (PRWEB) , ... June 23, 2016 , ... ... announces the release of its second eBook, “Clinical Trials Patient Recruitment and Retention ... recruitment and retention in this eBook by providing practical tips, tools, and strategies ...
(Date:6/23/2016)... SILVER SPRING, Md. , June 23, 2016 ... evidence collected from the crime scene to track the criminal ... sick, and the U.S. Food and Drug Administration (FDA) uses ... Sound far-fetched? It,s not. ... whole genome sequencing to support investigations of foodborne illnesses. Put ...
(Date:6/23/2016)... NEW YORK , June, 23, 2016  The ... students to envision new ways to harness living systems ... of Modern Art (MoMA) in New York ... more than 130 participating students, showcased projects at MoMA,s ... included Paola Antonelli , MoMA,s senior curator of ...
Breaking Biology Technology:
Cached News: