Navigation Links
Injection May Heal Damaged Heart
Date:7/23/2009

In mouse study, injured tissue and coronary function are restored

THURSDAY, JULY 23 (HealthDay News) -- Doctors have been unable to help injured heart tissue renew itself after a heart attack -- until now.

During a heart attack, vessels that supply blood to the heart become blocked, preventing enough oxygen from getting through. The heart muscle dies or is permanently damaged.

But researchers at Children's Hospital Boston report progress toward someday being ale to regenerate heart tissue after a heart attack or heart failure and even in children who are born with congenital heart defects.

In a study on mice, they showed that neuregulin 1 (NRG1), a growth factor involved in the development of the heart and nervous system, can fuel heart-muscle growth and recovery of cardiac function when injected after a heart attack.

This is a significant development because coronary heart disease, which causes heart attack and angina, is the leading cause of death in America.

After birth, heart-muscle cells stop dividing and proliferating. But experts, led by Dr. Bernhard Kuhn and Kevin Bersell of the cardiology department at Children's, restarted the cell cycle with NRG1, spurring the heart-muscle cells to divide and make copies of themselves.

When the team injected NRG1 into live mice once a day for three months after the animals had heart attacks, heart regeneration increased and the pumping function improved, compared with untreated mice.

In addition, the NRG1-injected mice did not show some common aftereffects of heart failure.

The study, funded by the cardiology department at Children's Hospital Boston, the Charles Hood Foundation and the American Heart Association, found that cell growth does not have to come from stem cells. A report on the research appears in the July 24 issue of Cell.

"Although many efforts have focused on stem cell-based strategies, our work suggests that stem cells aren't required and that stimulating differentiated cardiomyocytes [heart-muscle cells] to proliferate may be a viable alternative," Kuhn, the study's senior investigator, said in a news release from the hospital.

More information

The American Heart Association has tips on maintaining a healthy heart.



--Dennis Thompson



SOURCE: Children's Hospital Boston, news release, July 23, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Investigational New Drug Application for Fat Melting Injections Cleared by the FDA
2. HCV and HBV spreading more slowly among injection drug users in San Francisco
3. Microbiotic technology developed for microinjection of zebrafish embryos
4. Pill Equals Injection in Preventing Clots After Hip Replacement
5. Multiple corticosteroid injections in pregnant women may increase cerebral palsy
6. Consumer Safety Alert on Fat Dissolving Injections
7. FDA Expands VELCADE(R) (Bortezomib) for Injection Label for Patients with Multiple Myeloma
8. MultiVu Video Feed: FDA Approves DORIBAX(TM) (doripenem for injection) for the Treatment of Complicated Intra-abdominal and Complicated Urinary Tract Infections
9. Ultrasound-guided injections help ease chronic Achilles tendon pain
10. New Taxotere(R) (docetaxel) Injection Concentrate Data to be Presented at the 30th Annual San Antonio Breast Cancer Symposium (SABCS)
11. Highest Reported Complete Remission Rate of 35 Percent Achieved in a Phase III Front-Line Multiple Myeloma Trial With Velcade(R) (Bortezomib) for Injection Based Therapy
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Injection May Heal Damaged Heart
(Date:10/13/2017)... ... October 13, 2017 , ... As health professionals work ... as “patient engagement.” The patient is doing more than filling out a survey; in ... “There is an increasing emphasis in health care and research on the importance of ...
(Date:10/13/2017)... ... October 13, 2017 , ... ... PharmD ‘17, and Jennifer Huggins, PharmD ’17, along with clinical associate professor ... prevention of cardiovascular diseases during the 15th Annual Women’s Health Conference. The ...
(Date:10/13/2017)... ... October 13, 2017 , ... Ellevate Network, the leading network for professional ... action towards gender equality at their inaugural Summit in New York City in June. ... a social audience of over 3 million. To watch the Mobilize Women video, ...
(Date:10/13/2017)... ... October 13, 2017 , ... “The Journey: From the Mountains to the Mission ... lost souls in the Philippines. “The Journey: From the Mountains to the Mission Field” ... the Bible. She has taught all ages and currently teaches a class of ladies ...
(Date:10/12/2017)... ... October 12, 2017 , ... The company has developed a ... and regulatory authorities worldwide. From Children’s to Adults 50+, every formula has been ... standard. , These products are also: Gluten Free, Non-GMO, Vegan, Soy Free, ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... 2, 2017 The Rebound mobile app is poised ... reverse the tide of prescription drug addiction. The app empowers ... intake and stepping down their dosage in a safe, controlled ... December 2017; the first 100,000 people to sign up will ... http://www.rebound-solution.com/ ...
(Date:9/25/2017)... Sept. 25, 2017   Montrium , an ... solutions, today—from the IQPC Trial Master Files & ... NL)—announced that EastHORN Clinical Services has selected ... and TMF management. EastHORN, a leading European contract ... to increase transparency to enable greater collaboration with ...
(Date:9/19/2017)... ARBOR, Mich. , Sept. 19, 2017 HistoSonics, Inc., a venture-backed medical device ... precise destruction of targeted tissues, announced three leadership team developments today:   ... Stopek, PhD ... ... Veteran medical device executive ...
Breaking Medicine Technology: