Navigation Links
Early life stress may predict cardiovascular disease
Date:2/9/2010

Early life stress could be a risk factor for cardiovascular disease in adulthood, researchers report.

"We think early life stress increases sensitivity to a hormone known to increase your blood pressure and increases your cardiovascular risk in adult life," said Dr. Jennifer Pollock, biochemist in the Vascular Biology Center at the Medical College of Georgia and corresponding author on the study published online in Hypertension.

The studies in a proven model of chronic behavioral stress separating rat pups from their mother three hours daily for two weeks showed no long-term impact on key indicators of cardiovascular disease such as increased blood pressure, heart rate or inflammation in blood vessel walls.

But when the rats reached adulthood, an infusion of the hormone angiotensin II resulted in rapid and dramatic increases in all key indicators in animals that experienced early life stress. Stress activates the renin-angiotensin system which produces angiotensin II and is a major regulator of blood vessel growth and inflammation both heavily implicated in heart disease. "They cannot adapt to stress as well as a normal animal does," Dr. Pollock said. Within a few days, for example, blood pressure was nearly twice as high in the early-stress animals.

The chronic stress model most typically has been used to look at the psychological impact of childhood stress; this was the first time it was used to measure cardiovascular impact, Dr. Pollock said. Findings correlate with studies published in Circulation in 2004 that identified adverse childhood events, such as abuse or parental loss, in the backgrounds of many adults with ischemic heart disease.

"We want to be able to prevent this long-term consequence," said Dr. Analia S. Loria, MCG postdoctoral fellow and the study's first author. Although the adult rats seemed fine until stressed, the scientists noted the inevitability of stress in life.

Next steps include determining the mechanism that translates early life stress into cardiovascular risk; they suspect it results in genetic alterations at a vulnerable time in development. "Hormones can modulate gene expression and, during stress, you have very high levels of stress hormone," Dr. Loria said.

To further test the findings. they are blocking the angiotensin II receptor in rats to see if that decreases the cardiovascular impact in animals with early life stress. And, to more closely mimic what happens in real life, they are feeding high-fat diets to the rats to see if, like the angiotensin II infusions, it exaggerates cardiovascular disease risk. Receptor blockers are commonly used in cardiovascular patients who have high levels of angiotensin II.

The scientists also will be studying gender differences in response to early life stress since their initial studies were in male rats. Psychological studies indicate that females are less impacted by early life stress and the scientists predict they will find similar results in the cardiovascular response.


'/>"/>

Contact: Toni Baker
tbaker@mcg.edu
706-721-4421
Medical College of Georgia
Source:Eurekalert  

Related medicine news :

1. Pot bellies linked to early signs of cardiovascular disease
2. Eye-staining technique offers early detection for dry eye syndrome
3. Early Weight Loss in Women Linked to Dementia
4. Isolation of a new gene family essential for early development
5. U of M study: Early treatment can reverse heart damage
6. Gerresheimer to be Included in the SDAX Early Decision on Inclusion in the MDAX on September 5, 2007
7. Rock N Roll: Sex, Drugs and an Early Exit
8. Pop stars more than twice as likely to die an early death
9. Exercise and yoga improves quality of life in women with early-stage breast cancer
10. Research says doctors gender may hinder early diagnosis of heart disease in women
11. Antidepressant shows early promise in treating agitation and psychotic symptoms of dementia
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Early life stress may predict cardiovascular disease
(Date:5/23/2017)... City (PRWEB) , ... May 23, 2017 , ... ... Population Health and Clinical Integration company, announced today that its iClinic V12.2 ... Home (PCMH) 2017 Prevalidation. NCQA recently introduced PCMH 2017 standards which emphasize ...
(Date:5/23/2017)... NEW YORK, NY (PRWEB) , ... May 23, ... ... decision makers in the pharmaceutical and medical device sectors, today announced the winners ... • Transformers • Entrepreneurs) represent the most influential people in the healthcare industry ...
(Date:5/23/2017)... ... May 23, 2017 , ... i2i ... 2017 Best in KLAS category winner, has named Daniel P. Bullington as chief ... enhance its technology platform and product offerings,” says Justin Neece, president. “Daniel is ...
(Date:5/23/2017)... , ... May 23, 2017 , ... ... and Reconstructive Surgeon Dr. Kevin Sadati, is pleased to announce a new treatment ... collagen and elastin in their face, neck, and body through a virtually pain-free, ...
(Date:5/23/2017)... ... May 23, 2017 , ... MedTech For Solutions has announced ... laboratory, to provide hands-on training utilizing cutting-edge equipment at its recently-opened OvaTools Andrology ... MedTech Group Purchasing vendor , will provide specialized equipment to ensure OvaTools participants ...
Breaking Medicine News(10 mins):
(Date:5/10/2017)... , May 10, 2017 Global Health ... Latin America , published its 2017 ranking ... ranking is based on extensive data analysis from GHI,s ... largest hospitals database for the region. The GHI database covers ... , offering more than 130 data points for each institution ...
(Date:5/9/2017)...  Demonstrating its commitment to representing research- based ... Pharmaceutical Research and Manufacturers of America (PhRMA) today ... now have to meet new research and development ... join PhRMA. "By putting in place ... clear message that being a member of PhRMA ...
(Date:5/6/2017)... --  Provista , a proven leader in the supply chain ... Jim Cunniff as the company,s new president and ... to Provista, including most recently serving as the president and ... . He assumed his new role with Provista on May ... Provista," says Jody Hatcher , president, Sourcing and Collaboration ...
Breaking Medicine Technology: